Description

Adding a new procedure to Kubemarine distribution for managing the maintenance mode for HAProxy load balancers.

Fixes # (issue)
#269

Solution

• We are developing a new procedure which will help us to enable/disable maintenance mode by a single command as below

How to apply

Once the changes mentioned in this PR, we will have a automated procedure to enable or disable the maintenance mode on HAProxy load balancers.

• Go to DVM --> Maintenance Job --> Build with parameters --> Select "haproxy_mntc" procedure from the drop down list --> provide the required argument (--mode enable/disable) --> Run the job
• Manual step -
  Login to CLI and navigate to kubemarine directory --> run the following command

kubemarine haproxy_mntc --mode enable/disable

Test Cases

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration.

TestCase 1

Run haproxy_mntc procedure for the cluster where maintenance mode is not supported.
kubemarine haproxy_mntc --mode enable
ER- procedure should fail with error message "Skiping haproxy maintenance procedure as cluster is not supported for HAProxy Maintenance mode."

TestCase 2

Run haproxy_mntc procedure for the cluster where maintenance mode is supported.

1. kubemarine haproxy_mntc --mode enable
2. kubemarine haproxy_mntc --mode disable

ER- Procedure should succeed with enabling or disabling the maintenance mode on haproxy load balancer.

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Integration CI passed
• Unit tests. If Yes list of new/changed tests with brief description
• There is no merge conflicts