Preventive alert for cluster key certificate expiration

According to the recent flash " IBM Storage Scale: An expired cluster key prevents nodes from connecting to the Storage Scale cluster resulting in admin commands failing to update the cluster configuration.https://www.ibm.com/support/pages/node/7145023 (Note: Internal reference D.326872)" when the cluster key expires, it can cause outages to local and remote cluster.

In order to prevent it to happen, new keys needs to be created. However, the administrators will forget to check it or don't know the issue until it happens.

The suggestion is to create a monitoring and events to prevent the cluster to reach the expiration of cluster key, and help client to take actions in advance. 

So Scale should monitor the cluster key certificate time to time and issue events on mmhealth and GUI.
The procedure would be :

Once a week,  check the committed cluster key certificate valid date:
/usr/lpp/mmfs/bin/mmgskkm print --cert id_rsa_committed.cert | grep Valid

If current date is 91 days greater than expiration day, do nothing
If current date is from 60 - 90 days to expiration day, issue a TIP event
If current date is from 30 - 59 days to expiration day, issue a DEGRADED/WARNING  event
If current date is from 0 - 29 days to expiration day, issue a ERROR event

Create a Direct Maintenance Procedure pointing to the https://www.ibm.com/support/pages/node/7145023 to guide administrators on how to renew the cluster key certificate