Created 02-25-2016 02:38 PM
We are using puppet, i would like to know the best process to do o.s updates on individual nodes? Can anyone suggest process?
take individual nodes into maintenance mode, stop services and run patch updates. @Ram D
Created 02-25-2016 03:09 PM
Is it the same for name nodes also? IS there any special care has to be taken? Can you provide the hortonworks documentation link for patch updates?
Created 02-25-2016 03:18 PM
I am asking about o.s level updates on machine not service level patches.
Created 02-25-2016 03:32 PM
you have seen this before. https://community.hortonworks.com/questions/4940/hdp-os-upgradepatching-best-practices.html. Same with namenodes, make sure you have HA. when you failover everything to standby node, take services down on the active (now standby) namenode and patch it.
Created 02-25-2016 05:08 PM
Created 02-25-2016 05:14 PM
@Ram D It's no different in EC2..See this old thread started by you
Created 02-29-2016 05:56 PM
Steps to update OS patches.
1) Stop all application on cluster
2) Apply the OS patches.
3) Reboot the system if required.
4) start all application on cluster
5) Validate all services.