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Chapter 7. Viewing Elasticsearch status
You can view the status of the Elasticsearch Operator and for a number of Elasticsearch components.
7.1. Viewing Elasticsearch status
You can view the status of your Elasticsearch cluster.
Prerequisites
- Cluster logging and Elasticsearch must be installed.
Procedure
Change to the
openshift-loggingproject.$ oc project openshift-loggingTo view the Elasticsearch cluster status:
Get the name of the Elasticsearch instance:
$ oc get Elasticsearch NAME AGE elasticsearch 5h9mGet the Elasticsearch status:
$ oc get Elasticsearch <Elasticsearch-instance> -o yamlFor example:
$ oc get Elasticsearch elasticsearch -n openshift-logging -o yamlThe output includes information similar to the following:
status:1 clusterHealth: green2 conditions:3 ..... nodes:4 ..... pods:5 ..... shardAllocationEnabled: "All"6 - 1
- In the output, the cluster status fields appear in the
statusstanza. - 2
- The status of the Elasticsearch cluster,
green,red,yellow. - 3
- Any status conditions, if present. The Elasticsearch cluster status indicates the reasons from the scheduler if a pod could not be placed. Any events related to the following conditions are shown:
- Container Waiting for both the Elasticsearch and proxy containers,
- Container Terminated for both the Elasticsearch and proxy containers,
- Pod unschedulable. Also, a condition is shown for a number of issues, see Example condition messages.
- 4
- The Elasticsearch nodes in the cluster, with
upgradeStatus. - 5
- The Elasticsearch client, data, and master pods in the cluster, listed under 'failed`,
notReadyorreadystate.
7.1.1. Example condition messages
The following are examples of some condition messages from the Status section of the Elasticsearch instance.
This status message indicates a node has exceeded the configured low watermark and no shard will be allocated to this node.
status:
nodes:
- conditions:
- lastTransitionTime: 2019-03-15T15:57:22Z
message: Disk storage usage for node is 27.5gb (36.74%). Shards will be not
be allocated on this node.
reason: Disk Watermark Low
status: "True"
type: NodeStorage
deploymentName: example-elasticsearch-cdm-0-1
upgradeStatus: {}This status message indicates a node has exceeded the configured high watermark and shard will be relocated to other nodes.
status:
nodes:
- conditions:
- lastTransitionTime: 2019-03-15T16:04:45Z
message: Disk storage usage for node is 27.5gb (36.74%). Shards will be relocated
from this node.
reason: Disk Watermark High
status: "True"
type: NodeStorage
deploymentName: example-elasticsearch-cdm-0-1
upgradeStatus: {}This status message indicates the Elasticsearch node selector in the CR does not match any nodes in the cluster:
status:
nodes:
- conditions:
- lastTransitionTime: 2019-04-10T02:26:24Z
message: '0/8 nodes are available: 8 node(s) didn''t match node selector.'
reason: Unschedulable
status: "True"
type: UnschedulableThis status message indicates that the Elasticsearch CR uses a non-existent PVC.
status:
nodes:
- conditions:
- last Transition Time: 2019-04-10T05:55:51Z
message: pod has unbound immediate PersistentVolumeClaims (repeated 5 times)
reason: Unschedulable
status: True
type: UnschedulableThis status message indicates that your Elasticsearch cluster does not have enough nodes to support your Elasticsearch redundancy policy.
status:
clusterHealth: ""
conditions:
- lastTransitionTime: 2019-04-17T20:01:31Z
message: Wrong RedundancyPolicy selected. Choose different RedundancyPolicy or
add more nodes with data roles
reason: Invalid Settings
status: "True"
type: InvalidRedundancyThis status message indicates your cluster has too many master nodes:
status:
clusterHealth: green
conditions:
- lastTransitionTime: '2019-04-17T20:12:34Z'
message: >-
Invalid master nodes count. Please ensure there are no more than 3 total
nodes with master roles
reason: Invalid Settings
status: 'True'
type: InvalidMasters7.2. Viewing Elasticsearch component status
You can view the status for a number of Elasticsearch components.
- Elasticsearch indices
You can view the status of the Elasticsearch indices.
Get the name of an Elasticsearch pod:
$ oc get pods --selector component=elasticsearch -o name pod/elasticsearch-cdm-1godmszn-1-6f8495-vp4lw pod/elasticsearch-cdm-1godmszn-2-5769cf-9ms2n pod/elasticsearch-cdm-1godmszn-3-f66f7d-zqkz7Get the status of the indices:
$ oc exec elasticsearch-cdm-1godmszn-1-6f8495-vp4lw -- indices Defaulting container name to elasticsearch. Use 'oc describe pod/elasticsearch-cdm-1godmszn-1-6f8495-vp4lw -n openshift-logging' to see all of the containers in this pod. Wed Apr 10 05:42:12 UTC 2019 health status index uuid pri rep docs.count docs.deleted store.size pri.store.size red open .kibana.647a750f1787408bf50088234ec0edd5a6a9b2ac N7iCbRjSSc2bGhn8Cpc7Jg 2 1 green open .operations.2019.04.10 GTewEJEzQjaus9QjvBBnGg 3 1 2176114 0 3929 1956 green open .operations.2019.04.11 ausZHoKxTNOoBvv9RlXfrw 3 1 1494624 0 2947 1475 green open .kibana 9Fltn1D0QHSnFMXpphZ--Q 1 1 1 0 0 0 green open .searchguard chOwDnQlSsqhfSPcot1Yiw 1 1 5 1 0 0
- Elasticsearch pods
You can view the status of the Elasticsearch pods.
Get the name of a pod:
$ oc get pods --selector component=elasticsearch -o name pod/elasticsearch-cdm-1godmszn-1-6f8495-vp4lw pod/elasticsearch-cdm-1godmszn-2-5769cf-9ms2n pod/elasticsearch-cdm-1godmszn-3-f66f7d-zqkz7Get the status of a pod:
oc describe pod elasticsearch-cdm-1godmszn-1-6f8495-vp4lwThe output includes the following status information:
.... Status: Running .... Containers: elasticsearch: Container ID: cri-o://b7d44e0a9ea486e27f47763f5bb4c39dfd2 State: Running Started: Mon, 08 Apr 2019 10:17:56 -0400 Ready: True Restart Count: 0 Readiness: exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3 .... proxy: Container ID: cri-o://3f77032abaddbb1652c116278652908dc01860320b8a4e741d06894b2f8f9aa1 State: Running Started: Mon, 08 Apr 2019 10:18:38 -0400 Ready: True Restart Count: 0 .... Conditions: Type Status Initialized True Ready True ContainersReady True PodScheduled True .... Events: <none>
- Elasticsearch deployment configuration
You can view the status of the Elasticsearch deployment configuration.
Get the name of a deployment configuration:
$ oc get deployment --selector component=elasticsearch -o name deployment.extensions/elasticsearch-cdm-1gon-1 deployment.extensions/elasticsearch-cdm-1gon-2 deployment.extensions/elasticsearch-cdm-1gon-3Get the deployment configuration status:
$ oc describe deployment elasticsearch-cdm-1gon-1The output includes the following status information:
.... Containers: elasticsearch: Image: registry.redhat.io/openshift4/ose-logging-elasticsearch5:v4.1 Readiness: exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3 .... Conditions: Type Status Reason ---- ------ ------ Progressing Unknown DeploymentPaused Available True MinimumReplicasAvailable .... Events: <none>
- Elasticsearch ReplicaSet
You can view the status of the Elasticsearch ReplicaSet.
Get the name of a replica set:
$ oc get replicaSet --selector component=elasticsearch -o name replicaset.extensions/elasticsearch-cdm-1gon-1-6f8495 replicaset.extensions/elasticsearch-cdm-1gon-2-5769cf replicaset.extensions/elasticsearch-cdm-1gon-3-f66f7dGet the status of the replica set:
$ oc describe replicaSet elasticsearch-cdm-1gon-1-6f8495The output includes the following status information:
.... Containers: elasticsearch: Image: registry.redhat.io/openshift4/ose-logging-elasticsearch5:v4.1 Readiness: exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3 .... Events: <none>
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