Keepalived 实现 Redis AutoFailover (RedisHA)16

redis-a 是slave

root@redis-a keepalived# redis-cli info replication

Replication

role:slave

master_host:redis-b

master_port:6379

master_link_status:up

master_last_io_seconds_ago:4

master_sync_in_progress:0

slave_repl_offset:8093

slave_priority:100

slave_read_only:1

connected_slaves:0

master_repl_offset:0

repl_backlog_active:0

repl_backlog_size:1048576

repl_backlog_first_byte_offset:0

repl_backlog_histlen:0

root@redis-a keepalived#

模拟故障发生

root@redis-b keepalived# redis-cli shutdown

root@redis-b keepalived# redis-cli info replication

Could not connect to Redis at 127.0.0.1:6379: Connection refused

root@redis-b keepalived#

发生自动切换

redis-a 的日志中产生了数据

2015-09-25:00:53:36|25366|state:master read change to master

2015-09-25:00:53:36|25366|state:master wait 10 sec for data sync from old master

2015-09-25:00:53:46|25366|state:master data rsync from old mater ok...

2015-09-25:00:53:46|25366|state:master Run slaveof no one,close master/slave

OK

2015-09-25:00:53:46|25366|state:master wait other slave connect....