[DOCS-1393] Migrate three config servers Created: 15/Apr/13  Updated: 18/Apr/13  Resolved: 18/Apr/13

Status: Closed
Project: Documentation
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Major - P3
Reporter: David Hows Assignee: Unassigned
Resolution: Duplicate Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
duplicates DOCS-94 Create a cookbook for major cluster m... Closed
Related
is related to DOCS-1407 The order of config servers can be ch... Closed
Participants:
Days since reply: 10 years, 44 weeks, 3 days ago

 Description   

Currently we have a process for migrating a single config server.

We should document a process for migrating three config servers at once via change of CNAME. Say in the event of changing instance sizes.

This process can potentially cause people problems if they clone the config servers. Eg, Old Hosts A, B and C. New hosts A1, B1, C1

Shutdown A,
Clone data from A to A1, B1 and C1
Change CNAME for A to A1
Start A1

You now have all three config servers up temporarily which can lead to writes being on B and C, but not on B1 and C1

As this is something people may wish to do we should document a working process for them.


Generated at Thu Feb 08 07:40:55 UTC 2024 using Jira 9.7.1#970001-sha1:2222b88b221c4928ef0de3161136cc90c8356a66.