Maintenance approach for worker / data node

[#1]

Hello,

I need to reboot my Data node to fix an underlying network issue. OS team needs around 3 hours (approx.) to complete this activity, what would be the best approach:

1. Decommission and recommission host / dn.
2. Move DN to Offline Mode (feature in CM 5.16.x)

Any help / guidance is appreciated.

Regards

Amn

[#2 · Accepted solution]

@Amn_468 Your approach looks fine. You can always follow the recommendations while doing maintenance of cluster by referring below doc which is very informative.

https://docs.cloudera.com/documentation/enterprise/5-14-x/topics/cm_mc_host_maint.html

[#3]

Hi @GangWar 

Thanks for your reply.