Upgrade on Kubernetes using the MSR Operator

To upgrade from MSR 3.0.x to 3.1.x, use the Mirantis Migration Tool (MMT).

Tip

Third-party components are not upgraded alongside MSR, which means they can become vulnerable to security breaches and exploits. To mitigate this risk, Mirantis strongly recommends upgrading cert-manager and Postgres Operator before proceeding with the MSR upgrade.

Run the following command to upgrade cert-manager and Postgres Operator:

helm upgrade cert-manager cert-manager \
     --repo https://charts.jetstack.io \
     --version <version> \
     --set installCRDs=true

helm upgrade postgres-operator postgres-operator \
     --repo https://opensource.zalando.com/postgres-operator/charts/postgres-operator/ \
     --version <version> \
     --set configKubernetes.spilo_runasuser=101 \
     --set configKubernetes.spilo_runasgroup=103 \
     --set configKubernetes.spilo_fsgroup=103

To upgrade to a new patch version:

1. Edit the custom resource manifest to include the MSR version to which you plan to upgrade:

   spec:
     image:
       tag: <3.1.x>
   

2. Apply the changes to the custom resource:

   kubectl apply -f cr-sample-manifest.yaml
   

3. Verify completion of the reconciliation process for the custom resource:

   kubectl get msrs.msr.mirantis.com
   kubectl get rethinkdbs.rethinkdb.com