http://blog.itpub.net/28916011/viewspace-1969135/I have a problem has not been understood, is innobackupex inside of the--slave-info this parameter, is what to do. Finally in order to help and my experiment to figure out the meaning.
Here is a statement that I often use to back up the whole library:
Innobackupex--defaults-file=/etc/my.cnf--user=root--password= ' 123 '--host=localhost--rsync--compress-- Compress-threads=5--compress-chunk-size=64k--slave-info/root
Now let's look at the help and see what this--slave-info means:
[Email protected] ~]# Innobackupex--help |grep-c 5 slave
--slave-info
This option is useful the backing up a replication slave server. It
Prints the binary log position and name of the master server. It
Also writes this information to the "Xtrabackup_slave_info" file as
A "Change MASTER" command. A new slave for this master can is set up
By starting a slave server in this backup and issuing a "change
MASTER "command with the binary log position saved in the
"Xtrabackup_slave_info" file.
Here's what I understand:
When backing up from the library, you can use this parameter, plus the--slave-info backup directory will generate more than one Xtrabackup_slave_info file, here will save the main log file and offset, the file content is similar to the following: Change MASTER to Master_ Log_file= ', master_log_pos=0.
This parameter applies to the scenario: Assume that there is now a master library A and from library B, and now want to add a repository C, and let the repository C in the main library a master, because the main library A is a production library, the pressure is generally relatively large, so we back up a database on the repository B, and then take this backup to C server and import Next, execute the Change Master command on the C server: where Master_host is the IP of a, and Master_log_file and Master_log_pos are the values in this xtrabackup_slave_info. I don't know if that's clear (Czxin note).
Innobackupex the meaning of--slave-info parameters and the applicable scenarios
