Question

Seamless switchover master->slave... and back again

Asked by: x_terminat_or_3

Hi

We have a slave replicating from.... a master. Now the master needs to go down for a disk upgrade, so I started an extra slave somewhere else that is currently catching up on the replication.

What I want to do is, when it has caught up, is to stop the master, and make the slave the master, service the old master, then copy 'start set' to old master, make old master replicate from new master, then when old master has caught up, stop replicating from new master.

Do you guys see any pitfalls, things to be wary off?


Thanks

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Asked On
2007-09-25 at 13:32:09ID22852161
Tags

mysql

,

RHEL

Topic

MySQL Server

Participating Experts
1
Points
500
Comments
2

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Answers

 

by: rmaranhaoPosted on 2007-09-25 at 14:27:33ID: 19959251

try the promotion from slave to master some times before going live... But it sounds like a plan....

 

by: x_terminat_or_3Posted on 2007-09-25 at 14:29:24ID: 19959258

What I am most  concerned about is if I stop the master, will the slave continue to read the binary log until it finishes, or will the master break all connections, leaving thus unprocessed queries in the binary log

20120131-EE-VQP-002

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