How to downgrade Red Hat OpenShift Logging and Loki Operator in RHOCP 4

Environment

• Red Hat OpenShift Container Platform (RHOCP)
  • 4
• Red Hat OpenShift Logging (RHOL)
  • 6.1
  • 6.2
  • 6.3
  • 6.4
• Red Hat Loki Operator
  • 6.1
  • 6.2
  • 6.3
  • 6.4

Issue

• How to downgrade Red Hat OpenShift Logging Operator and Loki Operator from version 6.4 to version 6.3
• How to downgrade Red Hat OpenShift Logging Operator and Loki Operator from version 6.2 to version 6.1

Resolution

The steps described under this line are valid to downgrade the Red Hat OpenShift Logging Operator and Loki Operator from version 6.4 to version 6.3. Similar steps are valid for downgrading from Logging 6.2 to 6.1.

1. Verify the Current Version of the Red Hat OpenShift Logging Operator and Loki Operator:

   $ oc get csv -n openshift-logging |grep logging
   $ oc get csv -n openshift-logging |grep loki
   

2. Validate Existing Custom Resources associated with both operators not using a feature released in Red Hat OpenShift Logging v6.4 (see Release Notes):

   $ oc get obsclf -n openshift-logging
   $ oc get logfilemetricexporters -n openshift-logging
   $ oc get lokistack -n openshift-logging
   

3. Uninstall the Operators:

   • 3.1. Red Hat OpenShift Logging Operator version 6.4:

     In the OpenShift Web Console, in Administrative view, navigate to:

     Ecosystem/Operators ==> Installed Operator ==> Red Hat OpenShift Logging ==> Action ==> Uninstall Operator ==> Don't check the box "Delete all operand instances for this operator" (keep the box unchecked) ==> Click on uninstall
     

   

  <figure class="cp-figure" data-cp-size="100%" data-cp-align="center">
<a href="/sites/default/files/styles/LG%20-%20Large/public/images/new_uncheck_logging_0.png" data-action="zoom">
<img size="100%" class="cp-img" src="/sites/default/files/styles/LG%20-%20Large/public/images/new_uncheck_logging_0.png" alt="Uninstall Red Hat OpenShift Logging Operator 1" title="Uninstall Red Hat OpenShift Logging Operator 1"/>

- 3.2. **Loki Operator** version 6.4:

  A similar method, as in (3.1), can be used to uninstall Loki Operator. (Ensure that the “Delete all operand instances for this operator” option remains unchecked to retain existing resources.)

4. Reinstall the Operators:

   • 4.1. Red Hat OpenShift Logging Operator version 6.3:

     In the OpenShift Web Console, in Administrative view, navigate to:

     Ecosystem/Operators ==> Software Catlog/OperatorHub ==> Search for Red Hat OpenShift Logging ==> Channel ==> Click on Drop Down Arrow ==> Select stable-6.3 ==> Install ==> Install
     

   

- 4.2. **Loki Operator** version 6.3:

  A similar method, as in (4.1), can be used to install the `Loki Operator`.

5. Validate Custom Resources After Reinstallation:

   $ oc get obsclf -n openshift-logging
   $ oc get logfilemetricexporters -n openshift-logging
   $ oc get lokistack -n openshift-logging
   

6. Confirm the Downgraded Version of the Red Hat OpenShift Logging Operator and Loki Operator:

   $ oc get csv -n openshift-logging |grep logging
   $ oc get csv -n openshift-logging |grep loki
   

For more information, please open a new support case with Red Hat Support.

Diagnostic Steps

Verify the Red Hat OpenShift Logging Operator, Loki Operator versions and pods status of the openshift-logging namespace:

$ oc get csv -n openshift-logging
$ oc get pods -n openshift-logging

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