Chapter 1. Creating MachineSets
1.1. Creating a MachineSet in AWS
You can create a different MachineSet to serve a specific purpose in your OpenShift Container Platform cluster on Amazon Web Services (AWS). For example, you might create infrastructure MachineSets and related Machines so that you can move supporting workloads to the new Machines.
1.1.1. Machine API overview
The Machine API is a combination of primary resources that are based on the upstream Cluster API project and custom OpenShift Container Platform resources.
For OpenShift Container Platform 4.2 clusters, the Machine API performs all node host provisioning management actions after the cluster installation finishes. Because of this system, OpenShift Container Platform 4.2 offers an elastic, dynamic provisioning method on top of public or private cloud infrastructure.
The two primary resources are:
- Machines
- A fundamental unit that describes the host for a Node. A machine has a providerSpec, which describes the types of compute nodes that are offered for different cloud platforms. For example, a machine type for a worker node on Amazon Web Services (AWS) might define a specific machine type and required metadata.
- MachineSets
- Groups of machines. MachineSets are to machines as ReplicaSets are to Pods. If you need more machines or must scale them down, you change the replicas field on the MachineSet to meet your compute need.
The following custom resources add more capabilities to your cluster:
- MachineAutoscaler
- This resource automatically scales machines in a cloud. You can set the minimum and maximum scaling boundaries for nodes in a specified MachineSet, and the MachineAutoscaler maintains that range of nodes. The MachineAutoscaler object takes effect after a ClusterAutoscaler object exists. Both ClusterAutoscaler and MachineAutoscaler resources are made available by the ClusterAutoscalerOperator.
- ClusterAutoscaler
- This resource is based on the upstream ClusterAutoscaler project. In the OpenShift Container Platform implementation, it is integrated with the Machine API by extending the MachineSet API. You can set cluster-wide scaling limits for resources such as cores, nodes, memory, GPU, and so on. You can set the priority so that the cluster prioritizes pods so that new nodes are not brought online for less important pods. You can also set the ScalingPolicy so you can scale up nodes but not scale them down.
- MachineHealthCheck
This resource detects when a machine is unhealthy, deletes it, and, on supported platforms, makes a new machine.
NoteIn version 4.2, MachineHealthChecks is a Technology Preview feature
In OpenShift Container Platform version 3.11, you could not roll out a multi-zone architecture easily because the cluster did not manage machine provisioning. Beginning with OpenShift Container Platform version 4.1, this process is easier. Each MachineSet is scoped to a single zone, so the installation program sends out MachineSets across availability zones on your behalf. And then because your compute is dynamic, and in the face of a zone failure, you always have a zone for when you must rebalance your machines. The autoscaler provides best-effort balancing over the life of a cluster.
1.1.2. Sample YAML for a MachineSet Custom Resource on AWS
This sample YAML defines a MachineSet that runs in the us-east-1a Amazon Web Services (AWS) zone and creates nodes that are labeled with node-role.kubernetes.io/<role>: ""
In this sample, <infrastructureID> is the infrastructure ID label that is based on the cluster ID that you set when you provisioned the cluster, and <role> is the node label to add.
apiVersion: machine.openshift.io/v1beta1
kind: MachineSet
metadata:
labels:
machine.openshift.io/cluster-api-cluster: <infrastructureID> 1
name: <infrastructureID>-<role>-<zone> 2
namespace: openshift-machine-api
spec:
replicas: 1
selector:
matchLabels:
machine.openshift.io/cluster-api-cluster: <infrastructureID> 3
machine.openshift.io/cluster-api-machineset: <infrastructureID>-<role>-<zone> 4
template:
metadata:
labels:
machine.openshift.io/cluster-api-cluster: <infrastructureID> 5
machine.openshift.io/cluster-api-machine-role: <role> 6
machine.openshift.io/cluster-api-machine-type: <role> 7
machine.openshift.io/cluster-api-machineset: <infrastructureID>-<role>-<zone> 8
spec:
metadata:
labels:
node-role.kubernetes.io/<role>: "" 9
providerSpec:
value:
ami:
id: ami-046fe691f52a953f9 10
apiVersion: awsproviderconfig.openshift.io/v1beta1
blockDevices:
- ebs:
iops: 0
volumeSize: 120
volumeType: gp2
credentialsSecret:
name: aws-cloud-credentials
deviceIndex: 0
iamInstanceProfile:
id: <infrastructureID>-worker-profile 11
instanceType: m4.large
kind: AWSMachineProviderConfig
placement:
availabilityZone: us-east-1a
region: us-east-1
securityGroups:
- filters:
- name: tag:Name
values:
- <infrastructureID>-worker-sg 12
subnet:
filters:
- name: tag:Name
values:
- <infrastructureID>-private-us-east-1a 13
tags:
- name: kubernetes.io/cluster/<infrastructureID> 14
value: owned
userDataSecret:
name: worker-user-data- 1 3 5 11 12 13 14
- Specify the infrastructure ID that is based on the cluster ID that you set when you provisioned the cluster. If you have the OpenShift CLI and
jqpackage installed, you can obtain the infrastructure ID by running the following command:$ oc get -o jsonpath='{.status.infrastructureName}{"\n"}' infrastructure cluster - 2 4 8
- Specify the infrastructure ID, node label, and zone.
- 6 7 9
- Specify the node label to add.
- 10
- Specify a valid Red Hat Enterprise Linux CoreOS (RHCOS) AMI for your AWS zone for your OpenShift Container Platform nodes.
1.1.3. Creating a MachineSet
In addition to the ones created by the installation program, you can create your own MachineSets to dynamically manage the machine compute resources for specific workloads of your choice.
Prerequisites
- Deploy an OpenShift Container Platform cluster.
-
Install the OpenShift Command-line Interface (CLI), commonly known as
oc -
Log in to
ocas a user withcluster-adminpermission.
Procedure
Create a new YAML file that contains the MachineSet Custom Resource sample, as shown, and is named
<file_name>.yaml.Ensure that you set the
<clusterID>and<role>parameter values.If you are not sure about which value to set for a specific field, you can check an existing MachineSet from your cluster.
$ oc get machinesets -n openshift-machine-api NAME DESIRED CURRENT READY AVAILABLE AGE agl030519-vplxk-worker-us-east-1a 1 1 1 1 55m agl030519-vplxk-worker-us-east-1b 1 1 1 1 55m agl030519-vplxk-worker-us-east-1c 1 1 1 1 55m agl030519-vplxk-worker-us-east-1d 0 0 55m agl030519-vplxk-worker-us-east-1e 0 0 55m agl030519-vplxk-worker-us-east-1f 0 0 55m
Check values of a specific MachineSet:
$ oc get machineset <machineset_name> -n \ openshift-machine-api -o yaml .... template: metadata: labels: machine.openshift.io/cluster-api-cluster: agl030519-vplxk 1 machine.openshift.io/cluster-api-machine-role: worker 2 machine.openshift.io/cluster-api-machine-type: worker machine.openshift.io/cluster-api-machineset: agl030519-vplxk-worker-us-east-1a
Create the new
MachineSet:$ oc create -f <file_name>.yaml
View the list of MachineSets:
$ oc get machineset -n openshift-machine-api NAME DESIRED CURRENT READY AVAILABLE AGE agl030519-vplxk-infra-us-east-1a 1 1 1 1 11m agl030519-vplxk-worker-us-east-1a 1 1 1 1 55m agl030519-vplxk-worker-us-east-1b 1 1 1 1 55m agl030519-vplxk-worker-us-east-1c 1 1 1 1 55m agl030519-vplxk-worker-us-east-1d 0 0 55m agl030519-vplxk-worker-us-east-1e 0 0 55m agl030519-vplxk-worker-us-east-1f 0 0 55m
When the new MachineSet is available, the
DESIREDandCURRENTvalues match. If the MachineSet is not available, wait a few minutes and run the command again.After the new MachineSet is available, check status of the machine and the node that it references:
$ oc describe machine <name> -n openshift-machine-api
For example:
$ oc describe machine agl030519-vplxk-infra-us-east-1a -n openshift-machine-api status: addresses: - address: 10.0.133.18 type: InternalIP - address: "" type: ExternalDNS - address: ip-10-0-133-18.ec2.internal type: InternalDNS lastUpdated: "2019-05-03T10:38:17Z" nodeRef: kind: Node name: ip-10-0-133-18.ec2.internal uid: 71fb8d75-6d8f-11e9-9ff3-0e3f103c7cd8 providerStatus: apiVersion: awsproviderconfig.openshift.io/v1beta1 conditions: - lastProbeTime: "2019-05-03T10:34:31Z" lastTransitionTime: "2019-05-03T10:34:31Z" message: machine successfully created reason: MachineCreationSucceeded status: "True" type: MachineCreation instanceId: i-09ca0701454124294 instanceState: running kind: AWSMachineProviderStatusView the new node and confirm that the new node has the label that you specified:
$ oc get node <node_name> --show-labels
Review the command output and confirm that
node-role.kubernetes.io/<your_label>is in theLABELSlist.
Any change to a MachineSet is not applied to existing machines owned by the MachineSet. For example, labels edited or added to an existing MachineSet are not propagated to existing machines and Nodes associated with the MachineSet.
Next steps
If you need MachineSets in other availability zones, repeat this process to create more MachineSets.
1.2. Creating a MachineSet in Azure
You can create a different MachineSet to serve a specific purpose in your OpenShift Container Platform cluster on Microsoft Azure. For example, you might create infrastructure MachineSets and related Machines so that you can move supporting workloads to the new Machines.
1.2.1. Machine API overview
The Machine API is a combination of primary resources that are based on the upstream Cluster API project and custom OpenShift Container Platform resources.
For OpenShift Container Platform 4.2 clusters, the Machine API performs all node host provisioning management actions after the cluster installation finishes. Because of this system, OpenShift Container Platform 4.2 offers an elastic, dynamic provisioning method on top of public or private cloud infrastructure.
The two primary resources are:
- Machines
- A fundamental unit that describes the host for a Node. A machine has a providerSpec, which describes the types of compute nodes that are offered for different cloud platforms. For example, a machine type for a worker node on Amazon Web Services (AWS) might define a specific machine type and required metadata.
- MachineSets
- Groups of machines. MachineSets are to machines as ReplicaSets are to Pods. If you need more machines or must scale them down, you change the replicas field on the MachineSet to meet your compute need.
The following custom resources add more capabilities to your cluster:
- MachineAutoscaler
- This resource automatically scales machines in a cloud. You can set the minimum and maximum scaling boundaries for nodes in a specified MachineSet, and the MachineAutoscaler maintains that range of nodes. The MachineAutoscaler object takes effect after a ClusterAutoscaler object exists. Both ClusterAutoscaler and MachineAutoscaler resources are made available by the ClusterAutoscalerOperator.
- ClusterAutoscaler
- This resource is based on the upstream ClusterAutoscaler project. In the OpenShift Container Platform implementation, it is integrated with the Machine API by extending the MachineSet API. You can set cluster-wide scaling limits for resources such as cores, nodes, memory, GPU, and so on. You can set the priority so that the cluster prioritizes pods so that new nodes are not brought online for less important pods. You can also set the ScalingPolicy so you can scale up nodes but not scale them down.
- MachineHealthCheck
This resource detects when a machine is unhealthy, deletes it, and, on supported platforms, makes a new machine.
NoteIn version 4.2, MachineHealthChecks is a Technology Preview feature
In OpenShift Container Platform version 3.11, you could not roll out a multi-zone architecture easily because the cluster did not manage machine provisioning. Beginning with OpenShift Container Platform version 4.1, this process is easier. Each MachineSet is scoped to a single zone, so the installation program sends out MachineSets across availability zones on your behalf. And then because your compute is dynamic, and in the face of a zone failure, you always have a zone for when you must rebalance your machines. The autoscaler provides best-effort balancing over the life of a cluster.
1.2.2. Sample YAML for a MachineSet Custom Resource on Azure
This sample YAML defines a MachineSet that runs in the 1 Microsoft Azure zone in the centralus region and creates nodes that are labeled with node-role.kubernetes.io/<role>: ""
In this sample, <infrastructureID> is the infrastructure ID label that is based on the cluster ID that you set when you provisioned the cluster, and <role> is the node label to add.
apiVersion: machine.openshift.io/v1beta1
kind: MachineSet
metadata:
labels:
machine.openshift.io/cluster-api-cluster: <infrastructureID> 1
machine.openshift.io/cluster-api-machine-role: <role> 2
machine.openshift.io/cluster-api-machine-type: <role> 3
name: <infrastructureID>-<role>-<region> 4
namespace: openshift-machine-api
spec:
replicas: 1
selector:
matchLabels:
machine.openshift.io/cluster-api-cluster: <infrastructureID> 5
machine.openshift.io/cluster-api-machineset: <infrastructureID>-<role>-<region> 6
template:
metadata:
creationTimestamp: null
labels:
machine.openshift.io/cluster-api-cluster: <infrastructureID> 7
machine.openshift.io/cluster-api-machine-role: <role> 8
machine.openshift.io/cluster-api-machine-type: <role> 9
machine.openshift.io/cluster-api-machineset: <infrastructureID>-<role>-<region> 10
spec:
metadata:
creationTimestamp: null
labels:
node-role.kubernetes.io/<role>: "" 11
providerSpec:
value:
apiVersion: azureproviderconfig.openshift.io/v1beta1
credentialsSecret:
name: azure-cloud-credentials
namespace: openshift-machine-api
image:
offer: ""
publisher: ""
resourceID: /resourceGroups/<infrastructureID>-rg/providers/Microsoft.Compute/images/<infrastructureID>
sku: ""
version: ""
internalLoadBalancer: ""
kind: AzureMachineProviderSpec
location: centralus
managedIdentity: <infrastructureID>-identity 12
metadata:
creationTimestamp: null
natRule: null
networkResourceGroup: ""
osDisk:
diskSizeGB: 128
managedDisk:
storageAccountType: Premium_LRS
osType: Linux
publicIP: false
publicLoadBalancer: ""
resourceGroup: <infrastructureID>-rg 13
sshPrivateKey: ""
sshPublicKey: ""
subnet: <infrastructureID>-<role>-subnet 14 15
userDataSecret:
name: <role>-user-data 16
vmSize: Standard_D2s_v3
vnet: <infrastructureID>-vnet 17
zone: "1" 18- 1 5 7 12 13 14 17
- Specify the infrastructure ID that is based on the cluster ID that you set when you provisioned the cluster. If you have the OpenShift CLI and
jqpackage installed, you can obtain the infrastructure ID by running the following command:$ oc get -o jsonpath='{.status.infrastructureName}{"\n"}' infrastructure cluster - 2 3 8 9 11 15 16
- Specify the node label to add.
- 4 6 10
- Specify the infrastructure ID, node label, and region.
- 18
- Specify the zone within your region to place Machines on. Be sure that your region supports the zone that you specify.
1.2.3. Creating a MachineSet
In addition to the ones created by the installation program, you can create your own MachineSets to dynamically manage the machine compute resources for specific workloads of your choice.
Prerequisites
- Deploy an OpenShift Container Platform cluster.
-
Install the OpenShift Command-line Interface (CLI), commonly known as
oc -
Log in to
ocas a user withcluster-adminpermission.
Procedure
Create a new YAML file that contains the MachineSet Custom Resource sample, as shown, and is named
<file_name>.yaml.Ensure that you set the
<clusterID>and<role>parameter values.If you are not sure about which value to set for a specific field, you can check an existing MachineSet from your cluster.
$ oc get machinesets -n openshift-machine-api NAME DESIRED CURRENT READY AVAILABLE AGE agl030519-vplxk-worker-us-east-1a 1 1 1 1 55m agl030519-vplxk-worker-us-east-1b 1 1 1 1 55m agl030519-vplxk-worker-us-east-1c 1 1 1 1 55m agl030519-vplxk-worker-us-east-1d 0 0 55m agl030519-vplxk-worker-us-east-1e 0 0 55m agl030519-vplxk-worker-us-east-1f 0 0 55m
Check values of a specific MachineSet:
$ oc get machineset <machineset_name> -n \ openshift-machine-api -o yaml .... template: metadata: labels: machine.openshift.io/cluster-api-cluster: agl030519-vplxk 1 machine.openshift.io/cluster-api-machine-role: worker 2 machine.openshift.io/cluster-api-machine-type: worker machine.openshift.io/cluster-api-machineset: agl030519-vplxk-worker-us-east-1a
Create the new
MachineSet:$ oc create -f <file_name>.yaml
View the list of MachineSets:
$ oc get machineset -n openshift-machine-api NAME DESIRED CURRENT READY AVAILABLE AGE agl030519-vplxk-infra-us-east-1a 1 1 1 1 11m agl030519-vplxk-worker-us-east-1a 1 1 1 1 55m agl030519-vplxk-worker-us-east-1b 1 1 1 1 55m agl030519-vplxk-worker-us-east-1c 1 1 1 1 55m agl030519-vplxk-worker-us-east-1d 0 0 55m agl030519-vplxk-worker-us-east-1e 0 0 55m agl030519-vplxk-worker-us-east-1f 0 0 55m
When the new MachineSet is available, the
DESIREDandCURRENTvalues match. If the MachineSet is not available, wait a few minutes and run the command again.After the new MachineSet is available, check status of the machine and the node that it references:
$ oc describe machine <name> -n openshift-machine-api
For example:
$ oc describe machine agl030519-vplxk-infra-us-east-1a -n openshift-machine-api status: addresses: - address: 10.0.133.18 type: InternalIP - address: "" type: ExternalDNS - address: ip-10-0-133-18.ec2.internal type: InternalDNS lastUpdated: "2019-05-03T10:38:17Z" nodeRef: kind: Node name: ip-10-0-133-18.ec2.internal uid: 71fb8d75-6d8f-11e9-9ff3-0e3f103c7cd8 providerStatus: apiVersion: awsproviderconfig.openshift.io/v1beta1 conditions: - lastProbeTime: "2019-05-03T10:34:31Z" lastTransitionTime: "2019-05-03T10:34:31Z" message: machine successfully created reason: MachineCreationSucceeded status: "True" type: MachineCreation instanceId: i-09ca0701454124294 instanceState: running kind: AWSMachineProviderStatusView the new node and confirm that the new node has the label that you specified:
$ oc get node <node_name> --show-labels
Review the command output and confirm that
node-role.kubernetes.io/<your_label>is in theLABELSlist.
Any change to a MachineSet is not applied to existing machines owned by the MachineSet. For example, labels edited or added to an existing MachineSet are not propagated to existing machines and Nodes associated with the MachineSet.
Next steps
If you need MachineSets in other availability zones, repeat this process to create more MachineSets.
1.3. Creating a MachineSet in GCP
You can create a different MachineSet to serve a specific purpose in your OpenShift Container Platform cluster on Google Cloud Platform (GCP). For example, you might create infrastructure MachineSets and related Machines so that you can move supporting workloads to the new Machines.
1.3.1. Machine API overview
The Machine API is a combination of primary resources that are based on the upstream Cluster API project and custom OpenShift Container Platform resources.
For OpenShift Container Platform 4.2 clusters, the Machine API performs all node host provisioning management actions after the cluster installation finishes. Because of this system, OpenShift Container Platform 4.2 offers an elastic, dynamic provisioning method on top of public or private cloud infrastructure.
The two primary resources are:
- Machines
- A fundamental unit that describes the host for a Node. A machine has a providerSpec, which describes the types of compute nodes that are offered for different cloud platforms. For example, a machine type for a worker node on Amazon Web Services (AWS) might define a specific machine type and required metadata.
- MachineSets
- Groups of machines. MachineSets are to machines as ReplicaSets are to Pods. If you need more machines or must scale them down, you change the replicas field on the MachineSet to meet your compute need.
The following custom resources add more capabilities to your cluster:
- MachineAutoscaler
- This resource automatically scales machines in a cloud. You can set the minimum and maximum scaling boundaries for nodes in a specified MachineSet, and the MachineAutoscaler maintains that range of nodes. The MachineAutoscaler object takes effect after a ClusterAutoscaler object exists. Both ClusterAutoscaler and MachineAutoscaler resources are made available by the ClusterAutoscalerOperator.
- ClusterAutoscaler
- This resource is based on the upstream ClusterAutoscaler project. In the OpenShift Container Platform implementation, it is integrated with the Machine API by extending the MachineSet API. You can set cluster-wide scaling limits for resources such as cores, nodes, memory, GPU, and so on. You can set the priority so that the cluster prioritizes pods so that new nodes are not brought online for less important pods. You can also set the ScalingPolicy so you can scale up nodes but not scale them down.
- MachineHealthCheck
This resource detects when a machine is unhealthy, deletes it, and, on supported platforms, makes a new machine.
NoteIn version 4.2, MachineHealthChecks is a Technology Preview feature
In OpenShift Container Platform version 3.11, you could not roll out a multi-zone architecture easily because the cluster did not manage machine provisioning. Beginning with OpenShift Container Platform version 4.1, this process is easier. Each MachineSet is scoped to a single zone, so the installation program sends out MachineSets across availability zones on your behalf. And then because your compute is dynamic, and in the face of a zone failure, you always have a zone for when you must rebalance your machines. The autoscaler provides best-effort balancing over the life of a cluster.
1.3.2. Sample YAML for a MachineSet Custom Resource on GCP
This sample YAML defines a MachineSet that runs in Google Cloud Platform (GCP) and creates nodes that are labeled with node-role.kubernetes.io/<role>: ""
In this sample, <infrastructureID> is the infrastructure ID label that is based on the cluster ID that you set when you provisioned the cluster, and <role> is the node label to add.
apiVersion: machine.openshift.io/v1beta1
kind: MachineSet
metadata:
labels:
machine.openshift.io/cluster-api-cluster: <infrastructureID> 1
name: <infrastructureID>-w-a 2
namespace: openshift-machine-api
spec:
replicas: 1
selector:
matchLabels:
machine.openshift.io/cluster-api-cluster: <infrastructureID> 3
machine.openshift.io/cluster-api-machineset: <infrastructureID>-w-a 4
template:
metadata:
creationTimestamp: null
labels:
machine.openshift.io/cluster-api-cluster: <infrastructureID> 5
machine.openshift.io/cluster-api-machine-role: <role> 6
machine.openshift.io/cluster-api-machine-type: <role> 7
machine.openshift.io/cluster-api-machineset: <infrastructureID>-w-a 8
spec:
metadata:
labels:
node-role.kubernetes.io/<role>: "" 9
providerSpec:
value:
apiVersion: gcpprovider.openshift.io/v1beta1
canIPForward: false
credentialsSecret:
name: gcp-cloud-credentials
deletionProtection: false
disks:
- autoDelete: true
boot: true
image: <infrastructureID>-rhcos-image 10
labels: null
sizeGb: 128
type: pd-ssd
kind: GCPMachineProviderSpec
machineType: n1-standard-4
metadata:
creationTimestamp: null
networkInterfaces:
- network: <infrastructureID>-network 11
subnetwork: <infrastructureID>-<role>-subnet 12
projectID: <project_name> 13
region: us-central1
serviceAccounts:
- email: <infrastructureID>-w@<project_name>.iam.gserviceaccount.com 14 15
scopes:
- https://www.googleapis.com/auth/cloud-platform
tags:
- <infrastructureID>-<role> 16
userDataSecret:
name: worker-user-data
zone: us-central1-a- 1 2 3 4 5 8 10 11 14
- Specify the infrastructure ID that is based on the cluster ID that you set when you provisioned the cluster. If you have the OpenShift CLI and
jqpackage installed, you can obtain the infrastructure ID by running the following command:$ oc get -o jsonpath='{.status.infrastructureName}{"\n"}' infrastructure cluster - 12 16
- Specify the infrastructure ID and node label.
- 6 7 9
- Specify the node label to add.
- 13 15
- Specify the name of the GCP project that you use for your cluster.
1.3.3. Creating a MachineSet
In addition to the ones created by the installation program, you can create your own MachineSets to dynamically manage the machine compute resources for specific workloads of your choice.
Prerequisites
- Deploy an OpenShift Container Platform cluster.
-
Install the OpenShift Command-line Interface (CLI), commonly known as
oc -
Log in to
ocas a user withcluster-adminpermission.
Procedure
Create a new YAML file that contains the MachineSet Custom Resource sample, as shown, and is named
<file_name>.yaml.Ensure that you set the
<clusterID>and<role>parameter values.If you are not sure about which value to set for a specific field, you can check an existing MachineSet from your cluster.
$ oc get machinesets -n openshift-machine-api NAME DESIRED CURRENT READY AVAILABLE AGE agl030519-vplxk-worker-us-east-1a 1 1 1 1 55m agl030519-vplxk-worker-us-east-1b 1 1 1 1 55m agl030519-vplxk-worker-us-east-1c 1 1 1 1 55m agl030519-vplxk-worker-us-east-1d 0 0 55m agl030519-vplxk-worker-us-east-1e 0 0 55m agl030519-vplxk-worker-us-east-1f 0 0 55m
Check values of a specific MachineSet:
$ oc get machineset <machineset_name> -n \ openshift-machine-api -o yaml .... template: metadata: labels: machine.openshift.io/cluster-api-cluster: agl030519-vplxk 1 machine.openshift.io/cluster-api-machine-role: worker 2 machine.openshift.io/cluster-api-machine-type: worker machine.openshift.io/cluster-api-machineset: agl030519-vplxk-worker-us-east-1a
Create the new
MachineSet:$ oc create -f <file_name>.yaml
View the list of MachineSets:
$ oc get machineset -n openshift-machine-api NAME DESIRED CURRENT READY AVAILABLE AGE agl030519-vplxk-infra-us-east-1a 1 1 1 1 11m agl030519-vplxk-worker-us-east-1a 1 1 1 1 55m agl030519-vplxk-worker-us-east-1b 1 1 1 1 55m agl030519-vplxk-worker-us-east-1c 1 1 1 1 55m agl030519-vplxk-worker-us-east-1d 0 0 55m agl030519-vplxk-worker-us-east-1e 0 0 55m agl030519-vplxk-worker-us-east-1f 0 0 55m
When the new MachineSet is available, the
DESIREDandCURRENTvalues match. If the MachineSet is not available, wait a few minutes and run the command again.After the new MachineSet is available, check status of the machine and the node that it references:
$ oc describe machine <name> -n openshift-machine-api
For example:
$ oc describe machine agl030519-vplxk-infra-us-east-1a -n openshift-machine-api status: addresses: - address: 10.0.133.18 type: InternalIP - address: "" type: ExternalDNS - address: ip-10-0-133-18.ec2.internal type: InternalDNS lastUpdated: "2019-05-03T10:38:17Z" nodeRef: kind: Node name: ip-10-0-133-18.ec2.internal uid: 71fb8d75-6d8f-11e9-9ff3-0e3f103c7cd8 providerStatus: apiVersion: awsproviderconfig.openshift.io/v1beta1 conditions: - lastProbeTime: "2019-05-03T10:34:31Z" lastTransitionTime: "2019-05-03T10:34:31Z" message: machine successfully created reason: MachineCreationSucceeded status: "True" type: MachineCreation instanceId: i-09ca0701454124294 instanceState: running kind: AWSMachineProviderStatusView the new node and confirm that the new node has the label that you specified:
$ oc get node <node_name> --show-labels
Review the command output and confirm that
node-role.kubernetes.io/<your_label>is in theLABELSlist.
Any change to a MachineSet is not applied to existing machines owned by the MachineSet. For example, labels edited or added to an existing MachineSet are not propagated to existing machines and Nodes associated with the MachineSet.
Next steps
If you need MachineSets in other availability zones, repeat this process to create more MachineSets.
