Upgrade PostgreSQL Operator 4.1 Minor Versions

Upgrading Postgres Operator from 4.1.0 to a patch release

This procedure will give instructions on how to upgrade Postgres Operator 4.1 patch releases.

Prerequisites

You will need the following items to complete the upgrade:

• The latest 4.1.X code for the Postgres Operator available
• The latest 4.1.X PGO client binary
• Finally, these instructions assume you are executing from $COROOT in a terminal window and that you are using the same user from your previous installation. This user must also still have admin privileges in your Kubernetes or Openshift environment.

Step 1

Run pgo show config and save this output to compare at the end to ensure you do not miss any of your current configuration changes.

Step 2

Update environment variables in the .bashrc file:

export CO_VERSION=4.1.X

If you are pulling your images from the same registry as before this should be the only update to the 4.1.X environment variables.

source the updated bash file:

source ~/.bashrc

Check to make sure that the correct CO_IMAGE_TAG image tag is being used. With a centos7 base image and version 4.1.X of the operator your image tag will be in the format of centos7-4.1.1. Verify this by running echo $CO_IMAGE_TAG.

Step 3

Update the pgo.yaml file in $COROOT/conf/postgres-operator/pgo.yaml. Use the config that you saved in Step 1. to make sure that you have updated the settings to match the old config. Confirm that the yaml file includes the correct images for the updated version.

For example, to update to versions 4.1.1:

CCPImageTag: centos7-11.6-4.1.1
COImageTag: centos7-4.1.1

Step 4

Install the 4.1.X Operator:

make deployoperator

Verify the Operator is running:

kubectl get pod -n <operator namespace>

Step 5

Update the pgo client binary to 4.1.x by replacing the binary file with the new one.

Run which pgo to ensure you are replacing the current binary.

Step 6

Make sure that any and all configuration changes have been updated. Run:

pgo show config

This will print out the current configuration that the operator is using. Ensure you made any configuration changes required, you can compare this output with Step 1 to ensure no settings are missed. If you happened to miss a setting, update the pgo.yaml file and rerun make deployoperator.

Step 7

The Postgres Operator is now upgraded to 4.1.X.

Verify this by running:

pgo version

Postgres Operator Container Upgrade Procedure

At this point, the Operator should be running the latest minor version of 4.1, and new clusters will be built using the appropriate specifications defined in your pgo.yaml file. For the existing clusters, upgrades can be performed with the following steps.

You can upgrade each cluster using the following command:

pgo upgrade -n <clusternamespace> --ccp-image-tag=centos7-11.6-4.1.1 <clustername>

This process takes a few momnets to complete.

To check everything is now working as expected, execute:

pgo test yourcluster

To check the various cluster elements are listed as expected:

pgo show cluster -n <clusternamespace> <clustername>

You’ve now completed the upgrade and are running Crunchy PostgreSQL Operator v4.1.X! For this minor upgrade, most existing settings and related services (such as pgBouncer, backup schedules and existing policies) are expected to work, but should be tested for functionality and adjusted or recreated as necessary.