Patroni Cluster Restart Automation

To prepare scripts to automate the Patroni cluster activities required during OS restarts.

The scripts should cover the following two scenarios

Scenario 1: Patroni service stop/start

Before OS stop, the script should:

Check the current Patroni cluster status.
Stop and disable the Patroni service on the node being patched.
Capture the command output and service status in a log file.

After OS restart, the script should:

Enable and start the Patroni service.
Verify that the node has successfully rejoined the three-node Patroni cluster.
Capture the Patroni service status, cluster status, and validation results in the log file.

Scenario 2: Patroni pause/resume