Redis cluster backup and recovery

1. Back up the data files under redis cluster A
2. Restore the backup files to redis cluster B.

1. Backup redis cluster A

[root@admin12 redis-3.0.6]# redis-cli -h localhost -p 6380 save
OK
[root@admin12 redis-3.0.6]# redis-cli -h localhost -p 6381 save
OK
[root@admin12 redis-3.0.6]# redis-cli -h localhost -p 6382 save
OK

2. Copy the backup file

[root@admin12 ~]# cp /var/lib/redis/6380/dump.rdb ./dump_6380.rdb
[root@admin12 ~]# cp /var/lib/redis/6381/dump.rdb ./dump_6381.rdb
[root@admin12 ~]# cp /var/lib/redis/7382/dump.rdb ./dump_6382.rdb

3. Close redis cluster B

[root@localhost ~]# redis-cli -p 6380 shutdown
[root@localhost ~]# redis-cli -p 6381 shutdown
[root@localhost ~]# redis-cli -p 6382 shutdown

4. Copy the backup file to redis cluster B

/var/lib/redis/6380/dump.rdb
/var/lib/redis/6381/dump.rdb
/var/lib/redis/6382/dump.rdb

5. Restart redis cluster B

[root@localhost redis]# cd /etc/redis
[root@localhost redis]# service redis_6380 start
Starting Redis server...
[root@localhost redis]# service redis_6381 start
Starting Redis server...
[root@localhost redis]# service redis_6382 start
Starting Redis server...