Chapter 3. PodTemplate [v1]

metadata

ObjectMeta

Standard object’s metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

spec

object

PodSpec is a description of a pod.

activeDeadlineSeconds

integer

Optional duration in seconds the pod may be active on the node relative to StartTime before the system will actively try to mark it failed and kill associated containers. Value must be a positive integer.

affinity

object

Affinity is a group of affinity scheduling rules.

automountServiceAccountToken

boolean

AutomountServiceAccountToken indicates whether a service account token should be automatically mounted.

containers

array

List of containers belonging to the pod. Containers cannot currently be added or removed. There must be at least one container in a Pod. Cannot be updated.

containers[]

object

A single application container that you want to run within a pod.

dnsConfig

object

PodDNSConfig defines the DNS parameters of a pod in addition to those generated from DNSPolicy.

dnsPolicy

string

Set DNS policy for the pod. Defaults to "ClusterFirst". Valid values are 'ClusterFirstWithHostNet', 'ClusterFirst', 'Default' or 'None'. DNS parameters given in DNSConfig will be merged with the policy selected with DNSPolicy. To have DNS options set along with hostNetwork, you have to specify DNS policy explicitly to 'ClusterFirstWithHostNet'.

Possible enum values: - "ClusterFirst" indicates that the pod should use cluster DNS first unless hostNetwork is true, if it is available, then fall back on the default (as determined by kubelet) DNS settings. - "ClusterFirstWithHostNet" indicates that the pod should use cluster DNS first, if it is available, then fall back on the default (as determined by kubelet) DNS settings. - "Default" indicates that the pod should use the default (as determined by kubelet) DNS settings. - "None" indicates that the pod should use empty DNS settings. DNS parameters such as nameservers and search paths should be defined via DNSConfig.

enableServiceLinks

boolean

EnableServiceLinks indicates whether information about services should be injected into pod’s environment variables, matching the syntax of Docker links. Optional: Defaults to true.

ephemeralContainers

array

List of ephemeral containers run in this pod. Ephemeral containers may be run in an existing pod to perform user-initiated actions such as debugging. This list cannot be specified when creating a pod, and it cannot be modified by updating the pod spec. In order to add an ephemeral container to an existing pod, use the pod’s ephemeralcontainers subresource.

ephemeralContainers[]

object

An EphemeralContainer is a temporary container that you may add to an existing Pod for user-initiated activities such as debugging. Ephemeral containers have no resource or scheduling guarantees, and they will not be restarted when they exit or when a Pod is removed or restarted. The kubelet may evict a Pod if an ephemeral container causes the Pod to exceed its resource allocation.

To add an ephemeral container, use the ephemeralcontainers subresource of an existing Pod. Ephemeral containers may not be removed or restarted.

hostAliases

array

HostAliases is an optional list of hosts and IPs that will be injected into the pod’s hosts file if specified. This is only valid for non-hostNetwork pods.

hostAliases[]

object

HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the pod’s hosts file.

hostIPC

boolean

Use the host’s ipc namespace. Optional: Default to false.

hostNetwork

boolean

Host networking requested for this pod. Use the host’s network namespace. If this option is set, the ports that will be used must be specified. Default to false.

hostPID

boolean

Use the host’s pid namespace. Optional: Default to false.

hostUsers

boolean

Use the host’s user namespace. Optional: Default to true. If set to true or not present, the pod will be run in the host user namespace, useful for when the pod needs a feature only available to the host user namespace, such as loading a kernel module with CAP_SYS_MODULE. When set to false, a new userns is created for the pod. Setting false is useful for mitigating container breakout vulnerabilities even allowing users to run their containers as root without actually having root privileges on the host. This field is alpha-level and is only honored by servers that enable the UserNamespacesSupport feature.

hostname

string

Specifies the hostname of the Pod If not specified, the pod’s hostname will be set to a system-defined value.

imagePullSecrets

array

ImagePullSecrets is an optional list of references to secrets in the same namespace to use for pulling any of the images used by this PodSpec. If specified, these secrets will be passed to individual puller implementations for them to use. More info: https://kubernetes.io/docs/concepts/containers/images#specifying-imagepullsecrets-on-a-pod

imagePullSecrets[]

object

LocalObjectReference contains enough information to let you locate the referenced object inside the same namespace.

initContainers

array

List of initialization containers belonging to the pod. Init containers are executed in order prior to containers being started. If any init container fails, the pod is considered to have failed and is handled according to its restartPolicy. The name for an init container or normal container must be unique among all containers. Init containers may not have Lifecycle actions, Readiness probes, Liveness probes, or Startup probes. The resourceRequirements of an init container are taken into account during scheduling by finding the highest request/limit for each resource type, and then using the max of of that value or the sum of the normal containers. Limits are applied to init containers in a similar fashion. Init containers cannot currently be added or removed. Cannot be updated. More info: https://kubernetes.io/docs/concepts/workloads/pods/init-containers/

initContainers[]

object

A single application container that you want to run within a pod.

nodeName

string

NodeName is a request to schedule this pod onto a specific node. If it is non-empty, the scheduler simply schedules this pod onto that node, assuming that it fits resource requirements.

nodeSelector

object (string)

NodeSelector is a selector which must be true for the pod to fit on a node. Selector which must match a node’s labels for the pod to be scheduled on that node. More info: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/

os

object

PodOS defines the OS parameters of a pod.

overhead

object (Quantity)

Overhead represents the resource overhead associated with running a pod for a given RuntimeClass. This field will be autopopulated at admission time by the RuntimeClass admission controller. If the RuntimeClass admission controller is enabled, overhead must not be set in Pod create requests. The RuntimeClass admission controller will reject Pod create requests which have the overhead already set. If RuntimeClass is configured and selected in the PodSpec, Overhead will be set to the value defined in the corresponding RuntimeClass, otherwise it will remain unset and treated as zero. More info: https://git.k8s.io/enhancements/keps/sig-node/688-pod-overhead/README.md

preemptionPolicy

string

PreemptionPolicy is the Policy for preempting pods with lower priority. One of Never, PreemptLowerPriority. Defaults to PreemptLowerPriority if unset.

Possible enum values: - "Never" means that pod never preempts other pods with lower priority. - "PreemptLowerPriority" means that pod can preempt other pods with lower priority.

priority

integer

The priority value. Various system components use this field to find the priority of the pod. When Priority Admission Controller is enabled, it prevents users from setting this field. The admission controller populates this field from PriorityClassName. The higher the value, the higher the priority.

priorityClassName

string

If specified, indicates the pod’s priority. "system-node-critical" and "system-cluster-critical" are two special keywords which indicate the highest priorities with the former being the highest priority. Any other name must be defined by creating a PriorityClass object with that name. If not specified, the pod priority will be default or zero if there is no default.

readinessGates

array

If specified, all readiness gates will be evaluated for pod readiness. A pod is ready when all its containers are ready AND all conditions specified in the readiness gates have status equal to "True" More info: https://git.k8s.io/enhancements/keps/sig-network/580-pod-readiness-gates

readinessGates[]

object

PodReadinessGate contains the reference to a pod condition

resourceClaims

array

ResourceClaims defines which ResourceClaims must be allocated and reserved before the Pod is allowed to start. The resources will be made available to those containers which consume them by name.

This is an alpha field and requires enabling the DynamicResourceAllocation feature gate.

This field is immutable.

resourceClaims[]

object

PodResourceClaim references exactly one ResourceClaim through a ClaimSource. It adds a name to it that uniquely identifies the ResourceClaim inside the Pod. Containers that need access to the ResourceClaim reference it with this name.

restartPolicy

string

Restart policy for all containers within the pod. One of Always, OnFailure, Never. In some contexts, only a subset of those values may be permitted. Default to Always. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#restart-policy

Possible enum values: - "Always" - "Never" - "OnFailure"

runtimeClassName

string

RuntimeClassName refers to a RuntimeClass object in the node.k8s.io group, which should be used to run this pod. If no RuntimeClass resource matches the named class, the pod will not be run. If unset or empty, the "legacy" RuntimeClass will be used, which is an implicit class with an empty definition that uses the default runtime handler. More info: https://git.k8s.io/enhancements/keps/sig-node/585-runtime-class

schedulerName

string

If specified, the pod will be dispatched by specified scheduler. If not specified, the pod will be dispatched by default scheduler.

schedulingGates

array

SchedulingGates is an opaque list of values that if specified will block scheduling the pod. If schedulingGates is not empty, the pod will stay in the SchedulingGated state and the scheduler will not attempt to schedule the pod.

SchedulingGates can only be set at pod creation time, and be removed only afterwards.

This is a beta feature enabled by the PodSchedulingReadiness feature gate.

schedulingGates[]

object

PodSchedulingGate is associated to a Pod to guard its scheduling.

securityContext

object

PodSecurityContext holds pod-level security attributes and common container settings. Some fields are also present in container.securityContext. Field values of container.securityContext take precedence over field values of PodSecurityContext.

serviceAccount

string

DeprecatedServiceAccount is a depreciated alias for ServiceAccountName. Deprecated: Use serviceAccountName instead.

serviceAccountName

string

ServiceAccountName is the name of the ServiceAccount to use to run this pod. More info: https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/

setHostnameAsFQDN

boolean

If true the pod’s hostname will be configured as the pod’s FQDN, rather than the leaf name (the default). In Linux containers, this means setting the FQDN in the hostname field of the kernel (the nodename field of struct utsname). In Windows containers, this means setting the registry value of hostname for the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters to FQDN. If a pod does not have FQDN, this has no effect. Default to false.

shareProcessNamespace

boolean

Share a single process namespace between all of the containers in a pod. When this is set containers will be able to view and signal processes from other containers in the same pod, and the first process in each container will not be assigned PID 1. HostPID and ShareProcessNamespace cannot both be set. Optional: Default to false.

subdomain

string

If specified, the fully qualified Pod hostname will be "<hostname>.<subdomain>.<pod namespace>.svc.<cluster domain>". If not specified, the pod will not have a domainname at all.

terminationGracePeriodSeconds

integer

Optional duration in seconds the pod needs to terminate gracefully. May be decreased in delete request. Value must be non-negative integer. The value zero indicates stop immediately via the kill signal (no opportunity to shut down). If this value is nil, the default grace period will be used instead. The grace period is the duration in seconds after the processes running in the pod are sent a termination signal and the time when the processes are forcibly halted with a kill signal. Set this value longer than the expected cleanup time for your process. Defaults to 30 seconds.

tolerations

array

If specified, the pod’s tolerations.

tolerations[]

object

The pod this Toleration is attached to tolerates any taint that matches the triple <key,value,effect> using the matching operator <operator>.

topologySpreadConstraints

array

TopologySpreadConstraints describes how a group of pods ought to spread across topology domains. Scheduler will schedule pods in a way which abides by the constraints. All topologySpreadConstraints are ANDed.

topologySpreadConstraints[]

object

TopologySpreadConstraint specifies how to spread matching pods among the given topology.

volumes

array

List of volumes that can be mounted by containers belonging to the pod. More info: https://kubernetes.io/docs/concepts/storage/volumes

volumes[]

object

Volume represents a named volume in a pod that may be accessed by any container in the pod.

nodeAffinity

object

Node affinity is a group of node affinity scheduling rules.

podAffinity

object

Pod affinity is a group of inter pod affinity scheduling rules.

podAntiAffinity

object

Pod anti affinity is a group of inter pod anti affinity scheduling rules.

preferredDuringSchedulingIgnoredDuringExecution

array

The scheduler will prefer to schedule pods to nodes that satisfy the affinity expressions specified by this field, but it may choose a node that violates one or more of the expressions. The node that is most preferred is the one with the greatest sum of weights, i.e. for each node that meets all of the scheduling requirements (resource request, requiredDuringScheduling affinity expressions, etc.), compute a sum by iterating through the elements of this field and adding "weight" to the sum if the node matches the corresponding matchExpressions; the node(s) with the highest sum are the most preferred.

preferredDuringSchedulingIgnoredDuringExecution[]

object

An empty preferred scheduling term matches all objects with implicit weight 0 (i.e. it’s a no-op). A null preferred scheduling term matches no objects (i.e. is also a no-op).

requiredDuringSchedulingIgnoredDuringExecution

object

A node selector represents the union of the results of one or more label queries over a set of nodes; that is, it represents the OR of the selectors represented by the node selector terms.

preference

object

A null or empty node selector term matches no objects. The requirements of them are ANDed. The TopologySelectorTerm type implements a subset of the NodeSelectorTerm.

weight

integer

Weight associated with matching the corresponding nodeSelectorTerm, in the range 1-100.

matchExpressions

array

A list of node selector requirements by node’s labels.

matchExpressions[]

object

A node selector requirement is a selector that contains values, a key, and an operator that relates the key and values.

matchFields

array

A list of node selector requirements by node’s fields.

matchFields[]

object

A node selector requirement is a selector that contains values, a key, and an operator that relates the key and values.

key

string

The label key that the selector applies to.

operator

string

Represents a key’s relationship to a set of values. Valid operators are In, NotIn, Exists, DoesNotExist. Gt, and Lt.

Possible enum values: - "DoesNotExist" - "Exists" - "Gt" - "In" - "Lt" - "NotIn"

values

array (string)

An array of string values. If the operator is In or NotIn, the values array must be non-empty. If the operator is Exists or DoesNotExist, the values array must be empty. If the operator is Gt or Lt, the values array must have a single element, which will be interpreted as an integer. This array is replaced during a strategic merge patch.

key

string

The label key that the selector applies to.

operator

string

Represents a key’s relationship to a set of values. Valid operators are In, NotIn, Exists, DoesNotExist. Gt, and Lt.

Possible enum values: - "DoesNotExist" - "Exists" - "Gt" - "In" - "Lt" - "NotIn"

values

array (string)

An array of string values. If the operator is In or NotIn, the values array must be non-empty. If the operator is Exists or DoesNotExist, the values array must be empty. If the operator is Gt or Lt, the values array must have a single element, which will be interpreted as an integer. This array is replaced during a strategic merge patch.

nodeSelectorTerms

array

Required. A list of node selector terms. The terms are ORed.

nodeSelectorTerms[]

object

A null or empty node selector term matches no objects. The requirements of them are ANDed. The TopologySelectorTerm type implements a subset of the NodeSelectorTerm.

matchExpressions

array

A list of node selector requirements by node’s labels.

matchExpressions[]

object

A node selector requirement is a selector that contains values, a key, and an operator that relates the key and values.

matchFields

array

A list of node selector requirements by node’s fields.

matchFields[]

object

A node selector requirement is a selector that contains values, a key, and an operator that relates the key and values.

key

string

The label key that the selector applies to.

operator

string

Represents a key’s relationship to a set of values. Valid operators are In, NotIn, Exists, DoesNotExist. Gt, and Lt.

Possible enum values: - "DoesNotExist" - "Exists" - "Gt" - "In" - "Lt" - "NotIn"

values

array (string)

An array of string values. If the operator is In or NotIn, the values array must be non-empty. If the operator is Exists or DoesNotExist, the values array must be empty. If the operator is Gt or Lt, the values array must have a single element, which will be interpreted as an integer. This array is replaced during a strategic merge patch.

key

string

The label key that the selector applies to.

operator

string

Represents a key’s relationship to a set of values. Valid operators are In, NotIn, Exists, DoesNotExist. Gt, and Lt.

Possible enum values: - "DoesNotExist" - "Exists" - "Gt" - "In" - "Lt" - "NotIn"

values

array (string)

An array of string values. If the operator is In or NotIn, the values array must be non-empty. If the operator is Exists or DoesNotExist, the values array must be empty. If the operator is Gt or Lt, the values array must have a single element, which will be interpreted as an integer. This array is replaced during a strategic merge patch.

preferredDuringSchedulingIgnoredDuringExecution

array

The scheduler will prefer to schedule pods to nodes that satisfy the affinity expressions specified by this field, but it may choose a node that violates one or more of the expressions. The node that is most preferred is the one with the greatest sum of weights, i.e. for each node that meets all of the scheduling requirements (resource request, requiredDuringScheduling affinity expressions, etc.), compute a sum by iterating through the elements of this field and adding "weight" to the sum if the node has pods which matches the corresponding podAffinityTerm; the node(s) with the highest sum are the most preferred.

preferredDuringSchedulingIgnoredDuringExecution[]

object

The weights of all of the matched WeightedPodAffinityTerm fields are added per-node to find the most preferred node(s)

requiredDuringSchedulingIgnoredDuringExecution

array

If the affinity requirements specified by this field are not met at scheduling time, the pod will not be scheduled onto the node. If the affinity requirements specified by this field cease to be met at some point during pod execution (e.g. due to a pod label update), the system may or may not try to eventually evict the pod from its node. When there are multiple elements, the lists of nodes corresponding to each podAffinityTerm are intersected, i.e. all terms must be satisfied.

requiredDuringSchedulingIgnoredDuringExecution[]

object

Defines a set of pods (namely those matching the labelSelector relative to the given namespace(s)) that this pod should be co-located (affinity) or not co-located (anti-affinity) with, where co-located is defined as running on a node whose value of the label with key <topologyKey> matches that of any node on which a pod of the set of pods is running

podAffinityTerm

object

Defines a set of pods (namely those matching the labelSelector relative to the given namespace(s)) that this pod should be co-located (affinity) or not co-located (anti-affinity) with, where co-located is defined as running on a node whose value of the label with key <topologyKey> matches that of any node on which a pod of the set of pods is running

weight

integer

weight associated with matching the corresponding podAffinityTerm, in the range 1-100.

labelSelector

LabelSelector

A label query over a set of resources, in this case pods.

namespaceSelector

LabelSelector

A label query over the set of namespaces that the term applies to. The term is applied to the union of the namespaces selected by this field and the ones listed in the namespaces field. null selector and null or empty namespaces list means "this pod’s namespace". An empty selector ({}) matches all namespaces.

namespaces

array (string)

namespaces specifies a static list of namespace names that the term applies to. The term is applied to the union of the namespaces listed in this field and the ones selected by namespaceSelector. null or empty namespaces list and null namespaceSelector means "this pod’s namespace".

topologyKey

string

This pod should be co-located (affinity) or not co-located (anti-affinity) with the pods matching the labelSelector in the specified namespaces, where co-located is defined as running on a node whose value of the label with key topologyKey matches that of any node on which any of the selected pods is running. Empty topologyKey is not allowed.

labelSelector

LabelSelector

A label query over a set of resources, in this case pods.

namespaceSelector

LabelSelector

A label query over the set of namespaces that the term applies to. The term is applied to the union of the namespaces selected by this field and the ones listed in the namespaces field. null selector and null or empty namespaces list means "this pod’s namespace". An empty selector ({}) matches all namespaces.

namespaces

array (string)

namespaces specifies a static list of namespace names that the term applies to. The term is applied to the union of the namespaces listed in this field and the ones selected by namespaceSelector. null or empty namespaces list and null namespaceSelector means "this pod’s namespace".

topologyKey

string

This pod should be co-located (affinity) or not co-located (anti-affinity) with the pods matching the labelSelector in the specified namespaces, where co-located is defined as running on a node whose value of the label with key topologyKey matches that of any node on which any of the selected pods is running. Empty topologyKey is not allowed.

preferredDuringSchedulingIgnoredDuringExecution

array

The scheduler will prefer to schedule pods to nodes that satisfy the anti-affinity expressions specified by this field, but it may choose a node that violates one or more of the expressions. The node that is most preferred is the one with the greatest sum of weights, i.e. for each node that meets all of the scheduling requirements (resource request, requiredDuringScheduling anti-affinity expressions, etc.), compute a sum by iterating through the elements of this field and adding "weight" to the sum if the node has pods which matches the corresponding podAffinityTerm; the node(s) with the highest sum are the most preferred.

preferredDuringSchedulingIgnoredDuringExecution[]

object

The weights of all of the matched WeightedPodAffinityTerm fields are added per-node to find the most preferred node(s)

requiredDuringSchedulingIgnoredDuringExecution

array

If the anti-affinity requirements specified by this field are not met at scheduling time, the pod will not be scheduled onto the node. If the anti-affinity requirements specified by this field cease to be met at some point during pod execution (e.g. due to a pod label update), the system may or may not try to eventually evict the pod from its node. When there are multiple elements, the lists of nodes corresponding to each podAffinityTerm are intersected, i.e. all terms must be satisfied.

requiredDuringSchedulingIgnoredDuringExecution[]

object

Defines a set of pods (namely those matching the labelSelector relative to the given namespace(s)) that this pod should be co-located (affinity) or not co-located (anti-affinity) with, where co-located is defined as running on a node whose value of the label with key <topologyKey> matches that of any node on which a pod of the set of pods is running

podAffinityTerm

object

Defines a set of pods (namely those matching the labelSelector relative to the given namespace(s)) that this pod should be co-located (affinity) or not co-located (anti-affinity) with, where co-located is defined as running on a node whose value of the label with key <topologyKey> matches that of any node on which a pod of the set of pods is running

weight

integer

weight associated with matching the corresponding podAffinityTerm, in the range 1-100.

labelSelector

LabelSelector

A label query over a set of resources, in this case pods.

namespaceSelector

LabelSelector

A label query over the set of namespaces that the term applies to. The term is applied to the union of the namespaces selected by this field and the ones listed in the namespaces field. null selector and null or empty namespaces list means "this pod’s namespace". An empty selector ({}) matches all namespaces.

namespaces

array (string)

namespaces specifies a static list of namespace names that the term applies to. The term is applied to the union of the namespaces listed in this field and the ones selected by namespaceSelector. null or empty namespaces list and null namespaceSelector means "this pod’s namespace".

topologyKey

string

This pod should be co-located (affinity) or not co-located (anti-affinity) with the pods matching the labelSelector in the specified namespaces, where co-located is defined as running on a node whose value of the label with key topologyKey matches that of any node on which any of the selected pods is running. Empty topologyKey is not allowed.

labelSelector

LabelSelector

A label query over a set of resources, in this case pods.

namespaceSelector

LabelSelector

A label query over the set of namespaces that the term applies to. The term is applied to the union of the namespaces selected by this field and the ones listed in the namespaces field. null selector and null or empty namespaces list means "this pod’s namespace". An empty selector ({}) matches all namespaces.

namespaces

array (string)

namespaces specifies a static list of namespace names that the term applies to. The term is applied to the union of the namespaces listed in this field and the ones selected by namespaceSelector. null or empty namespaces list and null namespaceSelector means "this pod’s namespace".

topologyKey

string

This pod should be co-located (affinity) or not co-located (anti-affinity) with the pods matching the labelSelector in the specified namespaces, where co-located is defined as running on a node whose value of the label with key topologyKey matches that of any node on which any of the selected pods is running. Empty topologyKey is not allowed.

args

array (string)

Arguments to the entrypoint. The container image’s CMD is used if this is not provided. Variable references $(VAR_NAME) are expanded using the container’s environment. If a variable cannot be resolved, the reference in the input string will be unchanged. Double are reduced to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. "(VAR_NAME)" will produce the string literal "$(VAR_NAME)". Escaped references will never be expanded, regardless of whether the variable exists or not. Cannot be updated. More info: https://kubernetes.io/docs/tasks/inject-data-application/define-command-argument-container/#running-a-command-in-a-shell

command

array (string)

Entrypoint array. Not executed within a shell. The container image’s ENTRYPOINT is used if this is not provided. Variable references $(VAR_NAME) are expanded using the container’s environment. If a variable cannot be resolved, the reference in the input string will be unchanged. Double are reduced to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. "(VAR_NAME)" will produce the string literal "$(VAR_NAME)". Escaped references will never be expanded, regardless of whether the variable exists or not. Cannot be updated. More info: https://kubernetes.io/docs/tasks/inject-data-application/define-command-argument-container/#running-a-command-in-a-shell

env

array

List of environment variables to set in the container. Cannot be updated.

env[]

object

EnvVar represents an environment variable present in a Container.

envFrom

array

List of sources to populate environment variables in the container. The keys defined within a source must be a C_IDENTIFIER. All invalid keys will be reported as an event when the container is starting. When a key exists in multiple sources, the value associated with the last source will take precedence. Values defined by an Env with a duplicate key will take precedence. Cannot be updated.

envFrom[]

object

EnvFromSource represents the source of a set of ConfigMaps

image

string

Container image name. More info: https://kubernetes.io/docs/concepts/containers/images This field is optional to allow higher level config management to default or override container images in workload controllers like Deployments and StatefulSets.

imagePullPolicy

string

Image pull policy. One of Always, Never, IfNotPresent. Defaults to Always if :latest tag is specified, or IfNotPresent otherwise. Cannot be updated. More info: https://kubernetes.io/docs/concepts/containers/images#updating-images

Possible enum values: - "Always" means that kubelet always attempts to pull the latest image. Container will fail If the pull fails. - "IfNotPresent" means that kubelet pulls if the image isn’t present on disk. Container will fail if the image isn’t present and the pull fails. - "Never" means that kubelet never pulls an image, but only uses a local image. Container will fail if the image isn’t present

lifecycle

object

Lifecycle describes actions that the management system should take in response to container lifecycle events. For the PostStart and PreStop lifecycle handlers, management of the container blocks until the action is complete, unless the container process fails, in which case the handler is aborted.

livenessProbe

object

Probe describes a health check to be performed against a container to determine whether it is alive or ready to receive traffic.

name

string

Name of the container specified as a DNS_LABEL. Each container in a pod must have a unique name (DNS_LABEL). Cannot be updated.

ports

array

List of ports to expose from the container. Not specifying a port here DOES NOT prevent that port from being exposed. Any port which is listening on the default "0.0.0.0" address inside a container will be accessible from the network. Modifying this array with strategic merge patch may corrupt the data. For more information See https://github.com/kubernetes/kubernetes/issues/108255. Cannot be updated.

ports[]

object

ContainerPort represents a network port in a single container.

readinessProbe

object

Probe describes a health check to be performed against a container to determine whether it is alive or ready to receive traffic.

resizePolicy

array

Resources resize policy for the container.

resizePolicy[]

object

ContainerResizePolicy represents resource resize policy for the container.

resources

object

ResourceRequirements describes the compute resource requirements.

restartPolicy

string

RestartPolicy defines the restart behavior of individual containers in a pod. This field may only be set for init containers, and the only allowed value is "Always". For non-init containers or when this field is not specified, the restart behavior is defined by the Pod’s restart policy and the container type. Setting the RestartPolicy as "Always" for the init container will have the following effect: this init container will be continually restarted on exit until all regular containers have terminated. Once all regular containers have completed, all init containers with restartPolicy "Always" will be shut down. This lifecycle differs from normal init containers and is often referred to as a "sidecar" container. Although this init container still starts in the init container sequence, it does not wait for the container to complete before proceeding to the next init container. Instead, the next init container starts immediately after this init container is started, or after any startupProbe has successfully completed.

securityContext

object

SecurityContext holds security configuration that will be applied to a container. Some fields are present in both SecurityContext and PodSecurityContext. When both are set, the values in SecurityContext take precedence.

startupProbe

object

Probe describes a health check to be performed against a container to determine whether it is alive or ready to receive traffic.

stdin

boolean

Whether this container should allocate a buffer for stdin in the container runtime. If this is not set, reads from stdin in the container will always result in EOF. Default is false.

stdinOnce

boolean

Whether the container runtime should close the stdin channel after it has been opened by a single attach. When stdin is true the stdin stream will remain open across multiple attach sessions. If stdinOnce is set to true, stdin is opened on container start, is empty until the first client attaches to stdin, and then remains open and accepts data until the client disconnects, at which time stdin is closed and remains closed until the container is restarted. If this flag is false, a container processes that reads from stdin will never receive an EOF. Default is false

terminationMessagePath

string

Optional: Path at which the file to which the container’s termination message will be written is mounted into the container’s filesystem. Message written is intended to be brief final status, such as an assertion failure message. Will be truncated by the node if greater than 4096 bytes. The total message length across all containers will be limited to 12kb. Defaults to /dev/termination-log. Cannot be updated.

terminationMessagePolicy

string

Indicate how the termination message should be populated. File will use the contents of terminationMessagePath to populate the container status message on both success and failure. FallbackToLogsOnError will use the last chunk of container log output if the termination message file is empty and the container exited with an error. The log output is limited to 2048 bytes or 80 lines, whichever is smaller. Defaults to File. Cannot be updated.

Possible enum values: - "FallbackToLogsOnError" will read the most recent contents of the container logs for the container status message when the container exits with an error and the terminationMessagePath has no contents. - "File" is the default behavior and will set the container status message to the contents of the container’s terminationMessagePath when the container exits.

tty

boolean

Whether this container should allocate a TTY for itself, also requires 'stdin' to be true. Default is false.

volumeDevices

array

volumeDevices is the list of block devices to be used by the container.

volumeDevices[]

object

volumeDevice describes a mapping of a raw block device within a container.

volumeMounts

array

Pod volumes to mount into the container’s filesystem. Cannot be updated.

volumeMounts[]

object

VolumeMount describes a mounting of a Volume within a container.

workingDir

string

Container’s working directory. If not specified, the container runtime’s default will be used, which might be configured in the container image. Cannot be updated.

name

string

Name of the environment variable. Must be a C_IDENTIFIER.

value

string

Variable references $(VAR_NAME) are expanded using the previously defined environment variables in the container and any service environment variables. If a variable cannot be resolved, the reference in the input string will be unchanged. Double are reduced to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. "(VAR_NAME)" will produce the string literal "$(VAR_NAME)". Escaped references will never be expanded, regardless of whether the variable exists or not. Defaults to "".

valueFrom

object

EnvVarSource represents a source for the value of an EnvVar.

configMapKeyRef

object

Selects a key from a ConfigMap.

fieldRef

object

ObjectFieldSelector selects an APIVersioned field of an object.

resourceFieldRef

object

ResourceFieldSelector represents container resources (cpu, memory) and their output format

secretKeyRef

object

SecretKeySelector selects a key of a Secret.

key

string

The key to select.

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

optional

boolean

Specify whether the ConfigMap or its key must be defined

apiVersion

string

Version of the schema the FieldPath is written in terms of, defaults to "v1".

fieldPath

string

Path of the field to select in the specified API version.

containerName

string

Container name: required for volumes, optional for env vars

divisor

Quantity

Specifies the output format of the exposed resources, defaults to "1"

resource

string

Required: resource to select

key

string

The key of the secret to select from. Must be a valid secret key.

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

optional

boolean

Specify whether the Secret or its key must be defined

configMapRef

object

ConfigMapEnvSource selects a ConfigMap to populate the environment variables with.

The contents of the target ConfigMap’s Data field will represent the key-value pairs as environment variables.

prefix

string

An optional identifier to prepend to each key in the ConfigMap. Must be a C_IDENTIFIER.

secretRef

object

SecretEnvSource selects a Secret to populate the environment variables with.

The contents of the target Secret’s Data field will represent the key-value pairs as environment variables.

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

optional

boolean

Specify whether the ConfigMap must be defined

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

optional

boolean

Specify whether the Secret must be defined

postStart

object

LifecycleHandler defines a specific action that should be taken in a lifecycle hook. One and only one of the fields, except TCPSocket must be specified.

preStop

object

LifecycleHandler defines a specific action that should be taken in a lifecycle hook. One and only one of the fields, except TCPSocket must be specified.

exec

object

ExecAction describes a "run in container" action.

httpGet

object

HTTPGetAction describes an action based on HTTP Get requests.

tcpSocket

object

TCPSocketAction describes an action based on opening a socket

command

array (string)

Command is the command line to execute inside the container, the working directory for the command is root ('/') in the container’s filesystem. The command is simply exec’d, it is not run inside a shell, so traditional shell instructions ('|', etc) won’t work. To use a shell, you need to explicitly call out to that shell. Exit status of 0 is treated as live/healthy and non-zero is unhealthy.

host

string

Host name to connect to, defaults to the pod IP. You probably want to set "Host" in httpHeaders instead.

httpHeaders

array

Custom headers to set in the request. HTTP allows repeated headers.

httpHeaders[]

object

HTTPHeader describes a custom header to be used in HTTP probes

path

string

Path to access on the HTTP server.

port

IntOrString

Name or number of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

scheme

string

Scheme to use for connecting to the host. Defaults to HTTP.

Possible enum values: - "HTTP" means that the scheme used will be http:// - "HTTPS" means that the scheme used will be https://

name

string

The header field name. This will be canonicalized upon output, so case-variant names will be understood as the same header.

value

string

The header field value

host

string

Optional: Host name to connect to, defaults to the pod IP.

port

IntOrString

Number or name of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

exec

object

ExecAction describes a "run in container" action.

httpGet

object

HTTPGetAction describes an action based on HTTP Get requests.

tcpSocket

object

TCPSocketAction describes an action based on opening a socket

command

array (string)

Command is the command line to execute inside the container, the working directory for the command is root ('/') in the container’s filesystem. The command is simply exec’d, it is not run inside a shell, so traditional shell instructions ('|', etc) won’t work. To use a shell, you need to explicitly call out to that shell. Exit status of 0 is treated as live/healthy and non-zero is unhealthy.

host

string

Host name to connect to, defaults to the pod IP. You probably want to set "Host" in httpHeaders instead.

httpHeaders

array

Custom headers to set in the request. HTTP allows repeated headers.

httpHeaders[]

object

HTTPHeader describes a custom header to be used in HTTP probes

path

string

Path to access on the HTTP server.

port

IntOrString

Name or number of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

scheme

string

Scheme to use for connecting to the host. Defaults to HTTP.

Possible enum values: - "HTTP" means that the scheme used will be http:// - "HTTPS" means that the scheme used will be https://

name

string

The header field name. This will be canonicalized upon output, so case-variant names will be understood as the same header.

value

string

The header field value

host

string

Optional: Host name to connect to, defaults to the pod IP.

port

IntOrString

Number or name of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

exec

object

ExecAction describes a "run in container" action.

failureThreshold

integer

Minimum consecutive failures for the probe to be considered failed after having succeeded. Defaults to 3. Minimum value is 1.

grpc

object

GRPC specifies an action involving a GRPC port.

httpGet

object

HTTPGetAction describes an action based on HTTP Get requests.

initialDelaySeconds

integer

Number of seconds after the container has started before liveness probes are initiated. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes

periodSeconds

integer

How often (in seconds) to perform the probe. Default to 10 seconds. Minimum value is 1.

successThreshold

integer

Minimum consecutive successes for the probe to be considered successful after having failed. Defaults to 1. Must be 1 for liveness and startup. Minimum value is 1.

tcpSocket

object

TCPSocketAction describes an action based on opening a socket

terminationGracePeriodSeconds

integer

Optional duration in seconds the pod needs to terminate gracefully upon probe failure. The grace period is the duration in seconds after the processes running in the pod are sent a termination signal and the time when the processes are forcibly halted with a kill signal. Set this value longer than the expected cleanup time for your process. If this value is nil, the pod’s terminationGracePeriodSeconds will be used. Otherwise, this value overrides the value provided by the pod spec. Value must be non-negative integer. The value zero indicates stop immediately via the kill signal (no opportunity to shut down). This is a beta field and requires enabling ProbeTerminationGracePeriod feature gate. Minimum value is 1. spec.terminationGracePeriodSeconds is used if unset.

timeoutSeconds

integer

Number of seconds after which the probe times out. Defaults to 1 second. Minimum value is 1. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes

command

array (string)

Command is the command line to execute inside the container, the working directory for the command is root ('/') in the container’s filesystem. The command is simply exec’d, it is not run inside a shell, so traditional shell instructions ('|', etc) won’t work. To use a shell, you need to explicitly call out to that shell. Exit status of 0 is treated as live/healthy and non-zero is unhealthy.

port

integer

Port number of the gRPC service. Number must be in the range 1 to 65535.

service

string

Service is the name of the service to place in the gRPC HealthCheckRequest (see https://github.com/grpc/grpc/blob/master/doc/health-checking.md).

If this is not specified, the default behavior is defined by gRPC.

host

string

Host name to connect to, defaults to the pod IP. You probably want to set "Host" in httpHeaders instead.

httpHeaders

array

Custom headers to set in the request. HTTP allows repeated headers.

httpHeaders[]

object

HTTPHeader describes a custom header to be used in HTTP probes

path

string

Path to access on the HTTP server.

port

IntOrString

Name or number of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

scheme

string

Scheme to use for connecting to the host. Defaults to HTTP.

Possible enum values: - "HTTP" means that the scheme used will be http:// - "HTTPS" means that the scheme used will be https://

name

string

The header field name. This will be canonicalized upon output, so case-variant names will be understood as the same header.

value

string

The header field value

host

string

Optional: Host name to connect to, defaults to the pod IP.

port

IntOrString

Number or name of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

containerPort

integer

Number of port to expose on the pod’s IP address. This must be a valid port number, 0 < x < 65536.

hostIP

string

What host IP to bind the external port to.

hostPort

integer

Number of port to expose on the host. If specified, this must be a valid port number, 0 < x < 65536. If HostNetwork is specified, this must match ContainerPort. Most containers do not need this.

name

string

If specified, this must be an IANA_SVC_NAME and unique within the pod. Each named port in a pod must have a unique name. Name for the port that can be referred to by services.

protocol

string

Protocol for port. Must be UDP, TCP, or SCTP. Defaults to "TCP".

Possible enum values: - "SCTP" is the SCTP protocol. - "TCP" is the TCP protocol. - "UDP" is the UDP protocol.

exec

object

ExecAction describes a "run in container" action.

failureThreshold

integer

Minimum consecutive failures for the probe to be considered failed after having succeeded. Defaults to 3. Minimum value is 1.

grpc

object

GRPC specifies an action involving a GRPC port.

httpGet

object

HTTPGetAction describes an action based on HTTP Get requests.

initialDelaySeconds

integer

Number of seconds after the container has started before liveness probes are initiated. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes

periodSeconds

integer

How often (in seconds) to perform the probe. Default to 10 seconds. Minimum value is 1.

successThreshold

integer

Minimum consecutive successes for the probe to be considered successful after having failed. Defaults to 1. Must be 1 for liveness and startup. Minimum value is 1.

tcpSocket

object

TCPSocketAction describes an action based on opening a socket

terminationGracePeriodSeconds

integer

Optional duration in seconds the pod needs to terminate gracefully upon probe failure. The grace period is the duration in seconds after the processes running in the pod are sent a termination signal and the time when the processes are forcibly halted with a kill signal. Set this value longer than the expected cleanup time for your process. If this value is nil, the pod’s terminationGracePeriodSeconds will be used. Otherwise, this value overrides the value provided by the pod spec. Value must be non-negative integer. The value zero indicates stop immediately via the kill signal (no opportunity to shut down). This is a beta field and requires enabling ProbeTerminationGracePeriod feature gate. Minimum value is 1. spec.terminationGracePeriodSeconds is used if unset.

timeoutSeconds

integer

Number of seconds after which the probe times out. Defaults to 1 second. Minimum value is 1. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes

command

array (string)

Command is the command line to execute inside the container, the working directory for the command is root ('/') in the container’s filesystem. The command is simply exec’d, it is not run inside a shell, so traditional shell instructions ('|', etc) won’t work. To use a shell, you need to explicitly call out to that shell. Exit status of 0 is treated as live/healthy and non-zero is unhealthy.

port

integer

Port number of the gRPC service. Number must be in the range 1 to 65535.

service

string

Service is the name of the service to place in the gRPC HealthCheckRequest (see https://github.com/grpc/grpc/blob/master/doc/health-checking.md).

If this is not specified, the default behavior is defined by gRPC.

host

string

Host name to connect to, defaults to the pod IP. You probably want to set "Host" in httpHeaders instead.

httpHeaders

array

Custom headers to set in the request. HTTP allows repeated headers.

httpHeaders[]

object

HTTPHeader describes a custom header to be used in HTTP probes

path

string

Path to access on the HTTP server.

port

IntOrString

Name or number of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

scheme

string

Scheme to use for connecting to the host. Defaults to HTTP.

Possible enum values: - "HTTP" means that the scheme used will be http:// - "HTTPS" means that the scheme used will be https://

name

string

The header field name. This will be canonicalized upon output, so case-variant names will be understood as the same header.

value

string

The header field value

host

string

Optional: Host name to connect to, defaults to the pod IP.

port

IntOrString

Number or name of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

resourceName

string

Name of the resource to which this resource resize policy applies. Supported values: cpu, memory.

restartPolicy

string

Restart policy to apply when specified resource is resized. If not specified, it defaults to NotRequired.

claims

array

Claims lists the names of resources, defined in spec.resourceClaims, that are used by this container.

This is an alpha field and requires enabling the DynamicResourceAllocation feature gate.

This field is immutable. It can only be set for containers.

claims[]

object

ResourceClaim references one entry in PodSpec.ResourceClaims.

limits

object (Quantity)

Limits describes the maximum amount of compute resources allowed. More info: https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/

requests

object (Quantity)

Requests describes the minimum amount of compute resources required. If Requests is omitted for a container, it defaults to Limits if that is explicitly specified, otherwise to an implementation-defined value. Requests cannot exceed Limits. More info: https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/

name

string

Name must match the name of one entry in pod.spec.resourceClaims of the Pod where this field is used. It makes that resource available inside a container.

allowPrivilegeEscalation

boolean

AllowPrivilegeEscalation controls whether a process can gain more privileges than its parent process. This bool directly controls if the no_new_privs flag will be set on the container process. AllowPrivilegeEscalation is true always when the container is: 1) run as Privileged 2) has CAP_SYS_ADMIN Note that this field cannot be set when spec.os.name is windows.

capabilities

object

Adds and removes POSIX capabilities from running containers.

privileged

boolean

Run container in privileged mode. Processes in privileged containers are essentially equivalent to root on the host. Defaults to false. Note that this field cannot be set when spec.os.name is windows.

procMount

string

procMount denotes the type of proc mount to use for the containers. The default is DefaultProcMount which uses the container runtime defaults for readonly paths and masked paths. This requires the ProcMountType feature flag to be enabled. Note that this field cannot be set when spec.os.name is windows.

Possible enum values: - "Default" uses the container runtime defaults for readonly and masked paths for /proc. Most container runtimes mask certain paths in /proc to avoid accidental security exposure of special devices or information. - "Unmasked" bypasses the default masking behavior of the container runtime and ensures the newly created /proc the container stays in tact with no modifications.

readOnlyRootFilesystem

boolean

Whether this container has a read-only root filesystem. Default is false. Note that this field cannot be set when spec.os.name is windows.

runAsGroup

integer

The GID to run the entrypoint of the container process. Uses runtime default if unset. May also be set in PodSecurityContext. If set in both SecurityContext and PodSecurityContext, the value specified in SecurityContext takes precedence. Note that this field cannot be set when spec.os.name is windows.

runAsNonRoot

boolean

Indicates that the container must run as a non-root user. If true, the Kubelet will validate the image at runtime to ensure that it does not run as UID 0 (root) and fail to start the container if it does. If unset or false, no such validation will be performed. May also be set in PodSecurityContext. If set in both SecurityContext and PodSecurityContext, the value specified in SecurityContext takes precedence.

runAsUser

integer

The UID to run the entrypoint of the container process. Defaults to user specified in image metadata if unspecified. May also be set in PodSecurityContext. If set in both SecurityContext and PodSecurityContext, the value specified in SecurityContext takes precedence. Note that this field cannot be set when spec.os.name is windows.

seLinuxOptions

object

SELinuxOptions are the labels to be applied to the container

seccompProfile

object

SeccompProfile defines a pod/container’s seccomp profile settings. Only one profile source may be set.

windowsOptions

object

WindowsSecurityContextOptions contain Windows-specific options and credentials.

add

array (string)

Added capabilities

drop

array (string)

Removed capabilities

level

string

Level is SELinux level label that applies to the container.

role

string

Role is a SELinux role label that applies to the container.

type

string

Type is a SELinux type label that applies to the container.

user

string

User is a SELinux user label that applies to the container.

localhostProfile

string

localhostProfile indicates a profile defined in a file on the node should be used. The profile must be preconfigured on the node to work. Must be a descending path, relative to the kubelet’s configured seccomp profile location. Must be set if type is "Localhost". Must NOT be set for any other type.

type

string

type indicates which kind of seccomp profile will be applied. Valid options are:

Localhost - a profile defined in a file on the node should be used. RuntimeDefault - the container runtime default profile should be used. Unconfined - no profile should be applied.

Possible enum values: - "Localhost" indicates a profile defined in a file on the node should be used. The file’s location relative to <kubelet-root-dir>/seccomp. - "RuntimeDefault" represents the default container runtime seccomp profile. - "Unconfined" indicates no seccomp profile is applied (A.K.A. unconfined).

gmsaCredentialSpec

string

GMSACredentialSpec is where the GMSA admission webhook (https://github.com/kubernetes-sigs/windows-gmsa) inlines the contents of the GMSA credential spec named by the GMSACredentialSpecName field.

gmsaCredentialSpecName

string

GMSACredentialSpecName is the name of the GMSA credential spec to use.

hostProcess

boolean

HostProcess determines if a container should be run as a 'Host Process' container. All of a Pod’s containers must have the same effective HostProcess value (it is not allowed to have a mix of HostProcess containers and non-HostProcess containers). In addition, if HostProcess is true then HostNetwork must also be set to true.

runAsUserName

string

The UserName in Windows to run the entrypoint of the container process. Defaults to the user specified in image metadata if unspecified. May also be set in PodSecurityContext. If set in both SecurityContext and PodSecurityContext, the value specified in SecurityContext takes precedence.

exec

object

ExecAction describes a "run in container" action.

failureThreshold

integer

Minimum consecutive failures for the probe to be considered failed after having succeeded. Defaults to 3. Minimum value is 1.

grpc

object

GRPC specifies an action involving a GRPC port.

httpGet

object

HTTPGetAction describes an action based on HTTP Get requests.

initialDelaySeconds

integer

Number of seconds after the container has started before liveness probes are initiated. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes

periodSeconds

integer

How often (in seconds) to perform the probe. Default to 10 seconds. Minimum value is 1.

successThreshold

integer

Minimum consecutive successes for the probe to be considered successful after having failed. Defaults to 1. Must be 1 for liveness and startup. Minimum value is 1.

tcpSocket

object

TCPSocketAction describes an action based on opening a socket

terminationGracePeriodSeconds

integer

Optional duration in seconds the pod needs to terminate gracefully upon probe failure. The grace period is the duration in seconds after the processes running in the pod are sent a termination signal and the time when the processes are forcibly halted with a kill signal. Set this value longer than the expected cleanup time for your process. If this value is nil, the pod’s terminationGracePeriodSeconds will be used. Otherwise, this value overrides the value provided by the pod spec. Value must be non-negative integer. The value zero indicates stop immediately via the kill signal (no opportunity to shut down). This is a beta field and requires enabling ProbeTerminationGracePeriod feature gate. Minimum value is 1. spec.terminationGracePeriodSeconds is used if unset.

timeoutSeconds

integer

Number of seconds after which the probe times out. Defaults to 1 second. Minimum value is 1. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes

command

array (string)

Command is the command line to execute inside the container, the working directory for the command is root ('/') in the container’s filesystem. The command is simply exec’d, it is not run inside a shell, so traditional shell instructions ('|', etc) won’t work. To use a shell, you need to explicitly call out to that shell. Exit status of 0 is treated as live/healthy and non-zero is unhealthy.

port

integer

Port number of the gRPC service. Number must be in the range 1 to 65535.

service

string

Service is the name of the service to place in the gRPC HealthCheckRequest (see https://github.com/grpc/grpc/blob/master/doc/health-checking.md).

If this is not specified, the default behavior is defined by gRPC.

host

string

Host name to connect to, defaults to the pod IP. You probably want to set "Host" in httpHeaders instead.

httpHeaders

array

Custom headers to set in the request. HTTP allows repeated headers.

httpHeaders[]

object

HTTPHeader describes a custom header to be used in HTTP probes

path

string

Path to access on the HTTP server.

port

IntOrString

Name or number of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

scheme

string

Scheme to use for connecting to the host. Defaults to HTTP.

Possible enum values: - "HTTP" means that the scheme used will be http:// - "HTTPS" means that the scheme used will be https://

name

string

The header field name. This will be canonicalized upon output, so case-variant names will be understood as the same header.

value

string

The header field value

host

string

Optional: Host name to connect to, defaults to the pod IP.

port

IntOrString

Number or name of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

devicePath

string

devicePath is the path inside of the container that the device will be mapped to.

name

string

name must match the name of a persistentVolumeClaim in the pod

mountPath

string

Path within the container at which the volume should be mounted. Must not contain ':'.

mountPropagation

string

mountPropagation determines how mounts are propagated from the host to container and the other way around. When not set, MountPropagationNone is used. This field is beta in 1.10.

Possible enum values: - "Bidirectional" means that the volume in a container will receive new mounts from the host or other containers, and its own mounts will be propagated from the container to the host or other containers. Note that this mode is recursively applied to all mounts in the volume ("rshared" in Linux terminology). - "HostToContainer" means that the volume in a container will receive new mounts from the host or other containers, but filesystems mounted inside the container won’t be propagated to the host or other containers. Note that this mode is recursively applied to all mounts in the volume ("rslave" in Linux terminology). - "None" means that the volume in a container will not receive new mounts from the host or other containers, and filesystems mounted inside the container won’t be propagated to the host or other containers. Note that this mode corresponds to "private" in Linux terminology.

name

string

This must match the Name of a Volume.

readOnly

boolean

Mounted read-only if true, read-write otherwise (false or unspecified). Defaults to false.

subPath

string

Path within the volume from which the container’s volume should be mounted. Defaults to "" (volume’s root).

subPathExpr

string

Expanded path within the volume from which the container’s volume should be mounted. Behaves similarly to SubPath but environment variable references $(VAR_NAME) are expanded using the container’s environment. Defaults to "" (volume’s root). SubPathExpr and SubPath are mutually exclusive.

nameservers

array (string)

A list of DNS name server IP addresses. This will be appended to the base nameservers generated from DNSPolicy. Duplicated nameservers will be removed.

options

array

A list of DNS resolver options. This will be merged with the base options generated from DNSPolicy. Duplicated entries will be removed. Resolution options given in Options will override those that appear in the base DNSPolicy.

options[]

object

PodDNSConfigOption defines DNS resolver options of a pod.

searches

array (string)

A list of DNS search domains for host-name lookup. This will be appended to the base search paths generated from DNSPolicy. Duplicated search paths will be removed.

name

string

Required.

value

string

args

array (string)

Arguments to the entrypoint. The image’s CMD is used if this is not provided. Variable references $(VAR_NAME) are expanded using the container’s environment. If a variable cannot be resolved, the reference in the input string will be unchanged. Double are reduced to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. "(VAR_NAME)" will produce the string literal "$(VAR_NAME)". Escaped references will never be expanded, regardless of whether the variable exists or not. Cannot be updated. More info: https://kubernetes.io/docs/tasks/inject-data-application/define-command-argument-container/#running-a-command-in-a-shell

command

array (string)

Entrypoint array. Not executed within a shell. The image’s ENTRYPOINT is used if this is not provided. Variable references $(VAR_NAME) are expanded using the container’s environment. If a variable cannot be resolved, the reference in the input string will be unchanged. Double are reduced to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. "(VAR_NAME)" will produce the string literal "$(VAR_NAME)". Escaped references will never be expanded, regardless of whether the variable exists or not. Cannot be updated. More info: https://kubernetes.io/docs/tasks/inject-data-application/define-command-argument-container/#running-a-command-in-a-shell

env

array

List of environment variables to set in the container. Cannot be updated.

env[]

object

EnvVar represents an environment variable present in a Container.

envFrom

array

List of sources to populate environment variables in the container. The keys defined within a source must be a C_IDENTIFIER. All invalid keys will be reported as an event when the container is starting. When a key exists in multiple sources, the value associated with the last source will take precedence. Values defined by an Env with a duplicate key will take precedence. Cannot be updated.

envFrom[]

object

EnvFromSource represents the source of a set of ConfigMaps

image

string

Container image name. More info: https://kubernetes.io/docs/concepts/containers/images

imagePullPolicy

string

Image pull policy. One of Always, Never, IfNotPresent. Defaults to Always if :latest tag is specified, or IfNotPresent otherwise. Cannot be updated. More info: https://kubernetes.io/docs/concepts/containers/images#updating-images

Possible enum values: - "Always" means that kubelet always attempts to pull the latest image. Container will fail If the pull fails. - "IfNotPresent" means that kubelet pulls if the image isn’t present on disk. Container will fail if the image isn’t present and the pull fails. - "Never" means that kubelet never pulls an image, but only uses a local image. Container will fail if the image isn’t present

lifecycle

object

Lifecycle describes actions that the management system should take in response to container lifecycle events. For the PostStart and PreStop lifecycle handlers, management of the container blocks until the action is complete, unless the container process fails, in which case the handler is aborted.

livenessProbe

object

Probe describes a health check to be performed against a container to determine whether it is alive or ready to receive traffic.

name

string

Name of the ephemeral container specified as a DNS_LABEL. This name must be unique among all containers, init containers and ephemeral containers.

ports

array

Ports are not allowed for ephemeral containers.

ports[]

object

ContainerPort represents a network port in a single container.

readinessProbe

object

Probe describes a health check to be performed against a container to determine whether it is alive or ready to receive traffic.

resizePolicy

array

Resources resize policy for the container.

resizePolicy[]

object

ContainerResizePolicy represents resource resize policy for the container.

resources

object

ResourceRequirements describes the compute resource requirements.

restartPolicy

string

Restart policy for the container to manage the restart behavior of each container within a pod. This may only be set for init containers. You cannot set this field on ephemeral containers.

securityContext

object

SecurityContext holds security configuration that will be applied to a container. Some fields are present in both SecurityContext and PodSecurityContext. When both are set, the values in SecurityContext take precedence.

startupProbe

object

Probe describes a health check to be performed against a container to determine whether it is alive or ready to receive traffic.

stdin

boolean

Whether this container should allocate a buffer for stdin in the container runtime. If this is not set, reads from stdin in the container will always result in EOF. Default is false.

stdinOnce

boolean

Whether the container runtime should close the stdin channel after it has been opened by a single attach. When stdin is true the stdin stream will remain open across multiple attach sessions. If stdinOnce is set to true, stdin is opened on container start, is empty until the first client attaches to stdin, and then remains open and accepts data until the client disconnects, at which time stdin is closed and remains closed until the container is restarted. If this flag is false, a container processes that reads from stdin will never receive an EOF. Default is false

targetContainerName

string

If set, the name of the container from PodSpec that this ephemeral container targets. The ephemeral container will be run in the namespaces (IPC, PID, etc) of this container. If not set then the ephemeral container uses the namespaces configured in the Pod spec.

The container runtime must implement support for this feature. If the runtime does not support namespace targeting then the result of setting this field is undefined.

terminationMessagePath

string

Optional: Path at which the file to which the container’s termination message will be written is mounted into the container’s filesystem. Message written is intended to be brief final status, such as an assertion failure message. Will be truncated by the node if greater than 4096 bytes. The total message length across all containers will be limited to 12kb. Defaults to /dev/termination-log. Cannot be updated.

terminationMessagePolicy

string

Indicate how the termination message should be populated. File will use the contents of terminationMessagePath to populate the container status message on both success and failure. FallbackToLogsOnError will use the last chunk of container log output if the termination message file is empty and the container exited with an error. The log output is limited to 2048 bytes or 80 lines, whichever is smaller. Defaults to File. Cannot be updated.

Possible enum values: - "FallbackToLogsOnError" will read the most recent contents of the container logs for the container status message when the container exits with an error and the terminationMessagePath has no contents. - "File" is the default behavior and will set the container status message to the contents of the container’s terminationMessagePath when the container exits.

tty

boolean

Whether this container should allocate a TTY for itself, also requires 'stdin' to be true. Default is false.

volumeDevices

array

volumeDevices is the list of block devices to be used by the container.

volumeDevices[]

object

volumeDevice describes a mapping of a raw block device within a container.

volumeMounts

array

Pod volumes to mount into the container’s filesystem. Subpath mounts are not allowed for ephemeral containers. Cannot be updated.

volumeMounts[]

object

VolumeMount describes a mounting of a Volume within a container.

workingDir

string

Container’s working directory. If not specified, the container runtime’s default will be used, which might be configured in the container image. Cannot be updated.

name

string

Name of the environment variable. Must be a C_IDENTIFIER.

value

string

Variable references $(VAR_NAME) are expanded using the previously defined environment variables in the container and any service environment variables. If a variable cannot be resolved, the reference in the input string will be unchanged. Double are reduced to a single $, which allows for escaping the $(VAR_NAME) syntax: i.e. "(VAR_NAME)" will produce the string literal "$(VAR_NAME)". Escaped references will never be expanded, regardless of whether the variable exists or not. Defaults to "".

valueFrom

object

EnvVarSource represents a source for the value of an EnvVar.

configMapKeyRef

object

Selects a key from a ConfigMap.

fieldRef

object

ObjectFieldSelector selects an APIVersioned field of an object.

resourceFieldRef

object

ResourceFieldSelector represents container resources (cpu, memory) and their output format

secretKeyRef

object

SecretKeySelector selects a key of a Secret.

key

string

The key to select.

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

optional

boolean

Specify whether the ConfigMap or its key must be defined

apiVersion

string

Version of the schema the FieldPath is written in terms of, defaults to "v1".

fieldPath

string

Path of the field to select in the specified API version.

containerName

string

Container name: required for volumes, optional for env vars

divisor

Quantity

Specifies the output format of the exposed resources, defaults to "1"

resource

string

Required: resource to select

key

string

The key of the secret to select from. Must be a valid secret key.

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

optional

boolean

Specify whether the Secret or its key must be defined

configMapRef

object

ConfigMapEnvSource selects a ConfigMap to populate the environment variables with.

The contents of the target ConfigMap’s Data field will represent the key-value pairs as environment variables.

prefix

string

An optional identifier to prepend to each key in the ConfigMap. Must be a C_IDENTIFIER.

secretRef

object

SecretEnvSource selects a Secret to populate the environment variables with.

The contents of the target Secret’s Data field will represent the key-value pairs as environment variables.

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

optional

boolean

Specify whether the ConfigMap must be defined

name

string

Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

optional

boolean

Specify whether the Secret must be defined

postStart

object

LifecycleHandler defines a specific action that should be taken in a lifecycle hook. One and only one of the fields, except TCPSocket must be specified.

preStop

object

LifecycleHandler defines a specific action that should be taken in a lifecycle hook. One and only one of the fields, except TCPSocket must be specified.

exec

object

ExecAction describes a "run in container" action.

httpGet

object

HTTPGetAction describes an action based on HTTP Get requests.

tcpSocket

object

TCPSocketAction describes an action based on opening a socket

command

array (string)

Command is the command line to execute inside the container, the working directory for the command is root ('/') in the container’s filesystem. The command is simply exec’d, it is not run inside a shell, so traditional shell instructions ('|', etc) won’t work. To use a shell, you need to explicitly call out to that shell. Exit status of 0 is treated as live/healthy and non-zero is unhealthy.

host

string

Host name to connect to, defaults to the pod IP. You probably want to set "Host" in httpHeaders instead.

httpHeaders

array

Custom headers to set in the request. HTTP allows repeated headers.

httpHeaders[]

object

HTTPHeader describes a custom header to be used in HTTP probes

path

string

Path to access on the HTTP server.

port

IntOrString

Name or number of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

scheme

string

Scheme to use for connecting to the host. Defaults to HTTP.

Possible enum values: - "HTTP" means that the scheme used will be http:// - "HTTPS" means that the scheme used will be https://

name

string

The header field name. This will be canonicalized upon output, so case-variant names will be understood as the same header.

value

string

The header field value

host

string

Optional: Host name to connect to, defaults to the pod IP.

port

IntOrString

Number or name of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

exec

object

ExecAction describes a "run in container" action.

httpGet

object

HTTPGetAction describes an action based on HTTP Get requests.

tcpSocket

object

TCPSocketAction describes an action based on opening a socket

command

array (string)

Command is the command line to execute inside the container, the working directory for the command is root ('/') in the container’s filesystem. The command is simply exec’d, it is not run inside a shell, so traditional shell instructions ('|', etc) won’t work. To use a shell, you need to explicitly call out to that shell. Exit status of 0 is treated as live/healthy and non-zero is unhealthy.

host

string

Host name to connect to, defaults to the pod IP. You probably want to set "Host" in httpHeaders instead.

httpHeaders

array

Custom headers to set in the request. HTTP allows repeated headers.

httpHeaders[]

object

HTTPHeader describes a custom header to be used in HTTP probes

path

string

Path to access on the HTTP server.

port

IntOrString

Name or number of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

scheme

string

Scheme to use for connecting to the host. Defaults to HTTP.

Possible enum values: - "HTTP" means that the scheme used will be http:// - "HTTPS" means that the scheme used will be https://

name

string

The header field name. This will be canonicalized upon output, so case-variant names will be understood as the same header.

value

string

The header field value

host

string

Optional: Host name to connect to, defaults to the pod IP.

port

IntOrString

Number or name of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

exec

object

ExecAction describes a "run in container" action.

failureThreshold

integer

Minimum consecutive failures for the probe to be considered failed after having succeeded. Defaults to 3. Minimum value is 1.

grpc

object

GRPC specifies an action involving a GRPC port.

httpGet

object

HTTPGetAction describes an action based on HTTP Get requests.

initialDelaySeconds

integer

Number of seconds after the container has started before liveness probes are initiated. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes

periodSeconds

integer

How often (in seconds) to perform the probe. Default to 10 seconds. Minimum value is 1.

successThreshold

integer

Minimum consecutive successes for the probe to be considered successful after having failed. Defaults to 1. Must be 1 for liveness and startup. Minimum value is 1.

tcpSocket

object

TCPSocketAction describes an action based on opening a socket

terminationGracePeriodSeconds

integer

Optional duration in seconds the pod needs to terminate gracefully upon probe failure. The grace period is the duration in seconds after the processes running in the pod are sent a termination signal and the time when the processes are forcibly halted with a kill signal. Set this value longer than the expected cleanup time for your process. If this value is nil, the pod’s terminationGracePeriodSeconds will be used. Otherwise, this value overrides the value provided by the pod spec. Value must be non-negative integer. The value zero indicates stop immediately via the kill signal (no opportunity to shut down). This is a beta field and requires enabling ProbeTerminationGracePeriod feature gate. Minimum value is 1. spec.terminationGracePeriodSeconds is used if unset.

timeoutSeconds

integer

Number of seconds after which the probe times out. Defaults to 1 second. Minimum value is 1. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes

command

array (string)

Command is the command line to execute inside the container, the working directory for the command is root ('/') in the container’s filesystem. The command is simply exec’d, it is not run inside a shell, so traditional shell instructions ('|', etc) won’t work. To use a shell, you need to explicitly call out to that shell. Exit status of 0 is treated as live/healthy and non-zero is unhealthy.

port

integer

Port number of the gRPC service. Number must be in the range 1 to 65535.

service

string

Service is the name of the service to place in the gRPC HealthCheckRequest (see https://github.com/grpc/grpc/blob/master/doc/health-checking.md).

If this is not specified, the default behavior is defined by gRPC.

host

string

Host name to connect to, defaults to the pod IP. You probably want to set "Host" in httpHeaders instead.

httpHeaders

array

Custom headers to set in the request. HTTP allows repeated headers.

httpHeaders[]

object

HTTPHeader describes a custom header to be used in HTTP probes

path

string

Path to access on the HTTP server.

port

IntOrString

Name or number of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

scheme

string

Scheme to use for connecting to the host. Defaults to HTTP.

Possible enum values: - "HTTP" means that the scheme used will be http:// - "HTTPS" means that the scheme used will be https://

name

string

The header field name. This will be canonicalized upon output, so case-variant names will be understood as the same header.

value

string

The header field value

host

string

Optional: Host name to connect to, defaults to the pod IP.

port

IntOrString

Number or name of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

containerPort

integer

Number of port to expose on the pod’s IP address. This must be a valid port number, 0 < x < 65536.

hostIP

string

What host IP to bind the external port to.

hostPort

integer

Number of port to expose on the host. If specified, this must be a valid port number, 0 < x < 65536. If HostNetwork is specified, this must match ContainerPort. Most containers do not need this.

name

string

If specified, this must be an IANA_SVC_NAME and unique within the pod. Each named port in a pod must have a unique name. Name for the port that can be referred to by services.

protocol

string

Protocol for port. Must be UDP, TCP, or SCTP. Defaults to "TCP".

Possible enum values: - "SCTP" is the SCTP protocol. - "TCP" is the TCP protocol. - "UDP" is the UDP protocol.

exec

object

ExecAction describes a "run in container" action.

failureThreshold

integer

Minimum consecutive failures for the probe to be considered failed after having succeeded. Defaults to 3. Minimum value is 1.

grpc

object

GRPC specifies an action involving a GRPC port.

httpGet

object

HTTPGetAction describes an action based on HTTP Get requests.

initialDelaySeconds

integer

Number of seconds after the container has started before liveness probes are initiated. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes

periodSeconds

integer

How often (in seconds) to perform the probe. Default to 10 seconds. Minimum value is 1.

successThreshold

integer

Minimum consecutive successes for the probe to be considered successful after having failed. Defaults to 1. Must be 1 for liveness and startup. Minimum value is 1.

tcpSocket

object

TCPSocketAction describes an action based on opening a socket

terminationGracePeriodSeconds

integer

Optional duration in seconds the pod needs to terminate gracefully upon probe failure. The grace period is the duration in seconds after the processes running in the pod are sent a termination signal and the time when the processes are forcibly halted with a kill signal. Set this value longer than the expected cleanup time for your process. If this value is nil, the pod’s terminationGracePeriodSeconds will be used. Otherwise, this value overrides the value provided by the pod spec. Value must be non-negative integer. The value zero indicates stop immediately via the kill signal (no opportunity to shut down). This is a beta field and requires enabling ProbeTerminationGracePeriod feature gate. Minimum value is 1. spec.terminationGracePeriodSeconds is used if unset.

timeoutSeconds

integer

Number of seconds after which the probe times out. Defaults to 1 second. Minimum value is 1. More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes

command

array (string)

Command is the command line to execute inside the container, the working directory for the command is root ('/') in the container’s filesystem. The command is simply exec’d, it is not run inside a shell, so traditional shell instructions ('|', etc) won’t work. To use a shell, you need to explicitly call out to that shell. Exit status of 0 is treated as live/healthy and non-zero is unhealthy.

port

integer

Port number of the gRPC service. Number must be in the range 1 to 65535.

service

string

Service is the name of the service to place in the gRPC HealthCheckRequest (see https://github.com/grpc/grpc/blob/master/doc/health-checking.md).

If this is not specified, the default behavior is defined by gRPC.

host

string

Host name to connect to, defaults to the pod IP. You probably want to set "Host" in httpHeaders instead.

httpHeaders

array

Custom headers to set in the request. HTTP allows repeated headers.

httpHeaders[]

object

HTTPHeader describes a custom header to be used in HTTP probes

path

string

Path to access on the HTTP server.

port

IntOrString

Name or number of the port to access on the container. Number must be in the range 1 to 65535. Name must be an IANA_SVC_NAME.

scheme

string

Scheme to use for connecting to the host. Defaults to HTTP.

Possible enum values: - "HTTP" means that the scheme used will be http:// - "HTTPS" means that the scheme used will be https://

name

string

The header field name. This will be canonicalized upon output, so case-variant names will be understood as the same header.

value

string

The header field value