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Re: Removing dead server from replication ring
Posted by: Jesús Uzcanga
Date: May 18, 2018 09:28AM

You can restore C and D from zero without having to shut off A (master server).

Just make a backup using --master-data=2 option

mysqldump -u MyUser -p --opt --master-data=2 --routines --databases MyDatabase > /pathtobackup/backup.sql

(During th backup the server will be up but the DB will be locked (all transactions will be processed after finish automatically.

That backup.sql contains a magic value... If you open it, will see the following line:

-- CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000008', MASTER_LOG_POS=829650236;

So that's the magic, just restore that backup in C and set the master values as pointed.

Repeat from C to D.

Ing. Jesús Alfredo Uzcanga
Twitter: @JesusUzcanga

We learn the 20% of what we HEAR,
the 50% of what we SEE,
the 80% of what we DO and
the 95% of what we TEACH.


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Re: Removing dead server from replication ring
May 18, 2018 09:28AM

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