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Bug 1572283 - [DOCS] Need to include cluster power down/reboot procedures in Admin Guide
Summary: [DOCS] Need to include cluster power down/reboot procedures in Admin Guide
Alias: None
Product: Red Hat Ceph Storage
Classification: Red Hat
Component: Documentation
Version: 3.0
Hardware: Unspecified
OS: Unspecified
Target Milestone: z1
: 3.*
Assignee: Erin Donnelly
QA Contact: Sidhant Agrawal
Depends On:
Blocks: 1668330
TreeView+ depends on / blocked
Reported: 2018-04-26 15:26 UTC by Mike Hackett
Modified: 2019-08-26 06:55 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2019-08-26 06:55:20 UTC
Target Upstream Version:

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Description Mike Hackett 2018-04-26 15:26:48 UTC
Description of problem:

We lack cluster power down and reboot procedures in the Ceph Admin guide. It has been requested to include these procedures. Need to include the following components:

- Monitors
- OSDs
- RGWs
- MDSs
- Admin node (Ceph Metrics and Ansible)

Refer: https://access.redhat.com/solutions/2139301

Version-Release number of selected component (if applicable):

Comment 3 Randy Martinez 2018-04-27 03:35:04 UTC
The power down/up procedures for ceph are documented here: https://access.redhat.com/solutions/2139301 #Like Mike mentioned. Note: Step. 1 mentions clients... this includes MDSs. RGW/MDS order does not matter, but deactivation of MDS does covered next.

PR: https://github.com/ceph/ceph/pull/21265 documents the current process for MDS take down. Unfortunately, before it had a chance to make it into RH documentation... behavior was enhanced upstream. The listed PR applies today(RHCS 3.0), and with 3.1 it "should" be simplified to 1 command for stop/start. 
REF(future release):
  - http://docs.ceph.com/docs/master/cephfs/administration/#taking-the-cluster-down
  - Current vs. New in 3.1: https://github.com/ceph/ceph/pull/16608/files#diff-2001b94c3deda3525a9380b7f3491875  <-- This is the doc diff... The PR has all changes which will show where we're headed FYA.

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