question Re: ambari database maintenance in Archives of Support Questions (Read Only)

ambari database maintenance

arunpoy — Tue, 21 Jun 2016 11:38:34 GMT

In one of our clusters, the database used for ambari is going to be shutdown for maintenance. Waht should we do in that case. Will it cause any disruption to the cluster. usually what are the steps done in such scenario?

Re: ambari database maintenance

pankaj_singh — Tue, 21 Jun 2016 11:45:39 GMT

@ARUNKUMAR RAMASAMY The impact will be on accessing ambari UI and performing actions through it. The cluster should not be disrupted

Re: ambari database maintenance

divakarreddy_a — Tue, 21 Jun 2016 12:21:17 GMT

@ARUNKUMAR RAMASAMY

Good to take Ambari DB back up before going to start maintanance.

Re: ambari database maintenance

arunpoy — Tue, 21 Jun 2016 12:40:42 GMT

@pankaj singh, IS it a good practice to run the cluster during the DB maintenance or we should have a downtime for the cluster.

Re: ambari database maintenance

pminovic — Tue, 21 Jun 2016 13:15:15 GMT

Stop ambari-server and all ambari-agents
Backup Ambari DB
Shutdown Ambari DB and perform maintenance
Start Ambari DB
Start ambari-server and all ambari-agents, make sure everything works fine on Ambari dashboard and other pages, if something is wrong stop Ambari and restore the database backup.

You can use the cluster as usual during the above operations but obviously you cannot use Ambari to manage the cluster, and all Ambari alerts will be suppresed.

Re: ambari database maintenance

arunpoy — Tue, 21 Jun 2016 13:32:18 GMT

@Predrag Minovic

It helped, thanks a lot