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Updating PostgreSQL Operator

Updating

Updating the Crunchy PostgreSQL Operator is essential to the lifecycle management of the service. Using the update flag will:

  • Update and redeploy the operator deployment
  • Recreate configuration maps used by operator
  • Remove any deprecated objects
  • Allow administrators to change settings configured in the inventory
  • Reinstall the pgo client if a new version is specified

The following assumes the proper prerequisites are satisfied we can now update the PostgreSQL Operator.

The commands should be run in the directory where the Crunchy PostgreSQL Operator playbooks is stored. See the ansible directory in the Crunchy PostgreSQL Operator project for the inventory file, main playbook and ansible roles.

Updating on Linux

On a Linux host with Ansible installed we can run the following command to update
the PostgreSQL Operator:

ansible-playbook -i /path/to/inventory --tags=update --ask-become-pass main.yml

If the Crunchy PostgreSQL Operator playbooks were installed using yum, use the following commands:

export ANSIBLE_ROLES_PATH=/usr/share/ansible/roles/crunchydata

ansible-playbook -i /path/to/inventory --tags=update --ask-become-pass \
    /usr/share/ansible/postgres-operator/playbooks/main.yml

Updating on MacOS

On a MacOS host with Ansible installed we can run the following command to update
the PostgreSQL Operator.

ansible-playbook -i /path/to/inventory --tags=update --ask-become-pass main.yml

Updating on Windows Ubuntu Subsystem

On a Windows host with an Ubuntu subsystem we can run the following commands to update
the PostgreSQL Operator.

ansible-playbook -i /path/to/inventory --tags=update --ask-become-pass main.yml

Verifying the Update

This may take a few minutes to deploy. To check the status of the deployment run the following:

# Kubernetes
kubectl get deployments -n <NAMESPACE_NAME>
kubectl get pods -n <NAMESPACE_NAME>

# OpenShift
oc get deployments -n <NAMESPACE_NAME>
oc get pods -n <NAMESPACE_NAME>

Configure Environment Variables

After the Crunchy PostgreSQL Operator has successfully been updated we will need to configure local environment variables before using the pgo client.

To configure the environment variables used by pgo run the following command:

Note: <PGO_NAMESPACE> should be replaced with the namespace the Crunchy PostgreSQL Operator was deployed to. Also, if TLS was disabled, or if the port was changed, update PGO_APISERVER_URL accordingly.

cat <<EOF >> ~/.bashrc
export PGOUSER="${HOME?}/.pgo/<PGO_NAMESPACE>/pgouser"
export PGO_CA_CERT="${HOME?}/.pgo/<PGO_NAMESPACE>/client.crt"
export PGO_CLIENT_CERT="${HOME?}/.pgo/<PGO_NAMESPACE>/client.crt"
export PGO_CLIENT_KEY="${HOME?}/.pgo/<PGO_NAMESPACE>/client.pem"
export PGO_APISERVER_URL='https://127.0.0.1:8443'
EOF

Apply those changes to the current session by running:

source ~/.bashrc

Verify pgo Connection

In a separate terminal we need to setup a port forward to the Crunchy PostgreSQL Operator to ensure connection can be made outside of the cluster:

# If deployed to Kubernetes
kubectl port-forward <OPERATOR_POD_NAME> -n <OPERATOR_NAMESPACE> 8443:8443

# If deployed to OpenShift
oc port-forward <OPERATOR_POD_NAME> -n <OPERATOR_NAMESPACE> 8443:8443

Note: If a port other than 8443 was configured, update the above command accordingly.

On a separate terminal verify the pgo can communicate with the Crunchy PostgreSQL Operator:

pgo version

If the above command outputs versions of both the client and API server, the Crunchy PostgreSQL Operator has been updated successfully.