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Chapter 4. Updating cluster logging

After updating the OpenShift Container Platform cluster from 4.2 to 4.3, you must then upgrade cluster logging from 4.2 to 4.3.

4.1. Updating cluster logging
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After updating the OpenShift Container Platform cluster, you can update cluster logging from 4.2 to 4.3 by updating the subscription for the Elasticsearch Operator and the Cluster Logging Operator.

Important

Changes introduced by the new log forward feature modified the support for out_forward starting with the OpenShift Container Platform 4.3 release. In OpenShift Container Platform 4.3, you create a ConfigMap to configure out_forward. Any updates to the secure-forward.conf section of the Fluentd ConfigMap are removed.

If you use the out_forward plug-in, before updating, you can copy your current secure-forward.conf section from the Fluentd ConfigMap and use the copied data when you create the secure-forward ConfigMap.

Prerequisites

  • Update the cluster from 4.2 to 4.3.

  • Make sure the cluster logging status is healthy:

    • All Pods are ready.
    • Elasticsearch cluster is healthy.
  • Optionally, copy your current secure-forward.conf section from the Fluentd ConfigMap for use if you want to create the secure-forward ConfigMap. See the note above.

Procedure

  1. Update the Elasticsearch Operator:

    1. From the web console, click Operators Installed Operators.
    2. Select the openshift-logging project.
    3. Click the Elasticsearch Operator.
    4. Click Subscription Channel.
    5. In the Change Subscription Update Channel window, select 4.3 and click Save.

    6. Wait for a few seconds, then click Operators Installed Operators.

      The Elasticsearch Operator is shown as 4.3. For example: 

      Elasticsearch Operator
4.3.0-201909201915 provided
by Red Hat, Inc
      Copy to Clipboard Toggle word wrap

  2. Update the Cluster Logging Operator:

    1. From the web console, click Operators Installed Operators.
    2. Select the openshift-logging Project.
    3. Click the Cluster Logging Operator.
    4. Click Subscription Channel.
    5. In the Change Subscription Update Channel window, select 4.3 and click Save.

    6. Wait for a few seconds, then click Operators Installed Operators.

      The Cluster Logging Operator is shown as 4.3. For example: 

      Cluster Logging
4.3.0-201909201915 provided
by Red Hat, Inc
      Copy to Clipboard Toggle word wrap

  3. Check the logging components:

    1. Ensure that the Elasticsearch Pods are using a 4.3 image: 

      $ oc get pod -o yaml -n openshift-logging --selector component=elasticsearch |grep 'image:'

image: registry.redhat.io/openshift4/ose-logging-elasticsearch5:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-oauth-proxy:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-elasticsearch5:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-oauth-proxy:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-elasticsearch5:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-oauth-proxy:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-elasticsearch5:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-oauth-proxy:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-elasticsearch5:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-oauth-proxy:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-elasticsearch5:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-oauth-proxy:v4.3.0-202001081344
      Copy to Clipboard Toggle word wrap

    2. Ensure that all Elasticsearch Pods are in the Ready status: 

      $ oc get pod -n openshift-logging --selector component=elasticsearch

NAME                                            READY   STATUS    RESTARTS   AGE
elasticsearch-cdm-1pbrl44l-1-55b7546f4c-mshhk   2/2     Running   0          31m
elasticsearch-cdm-1pbrl44l-2-5c6d87589f-gx5hk   2/2     Running   0          30m
elasticsearch-cdm-1pbrl44l-3-88df5d47-m45jc     2/2     Running   0          29m
      Copy to Clipboard Toggle word wrap

    3. Ensure that the Elasticsearch cluster is healthy: 

      oc exec -n openshift-logging -c elasticsearch elasticsearch-cdm-1pbrl44l-1-55b7546f4c-mshhk -- es_cluster_health

{
  "cluster_name" : "elasticsearch",
  "status" : "green",

....
      Copy to Clipboard Toggle word wrap

    4. Ensure that the logging collector Pods are using a 4.3 image: 

      $ oc get pod -n openshift-logging --selector logging-infra=fluentd -o yaml |grep 'image:'

image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-fluentd:v4.3.0-202001081344
      Copy to Clipboard Toggle word wrap

    5. Ensure that the Kibana Pods are using a 4.3 image: 

      $ oc get pod -n openshift-logging --selector logging-infra=kibana -o yaml |grep 'image:'

image: registry.redhat.io/openshift4/ose-logging-kibana5:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-oauth-proxy:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-logging-kibana5:v4.3.0-202001081344
image: registry.redhat.io/openshift4/ose-oauth-proxy:v4.3.0-202001081344
      Copy to Clipboard Toggle word wrap

    6. Ensure that the Curator CronJob is using a 4.3 image: 

      $ $ oc get CronJob curator -n openshift-logging -o yaml |grep 'image:'

image: registry.redhat.io/openshift4/ose-logging-curator5:v4.3.0-202001081344
      Copy to Clipboard Toggle word wrap
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