redis主从复制
Posted 从入门到放弃
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配置从机命令 ： slaveof 127.0.0.1 6379
信息
127.0.0.1:6379> info replication # Replication role:master connected_slaves:0 master_repl_offset:0 repl_backlog_active:0 repl_backlog_size:1048576 repl_backlog_first_byte_offset:0 repl_backlog_histlen:0 127.0.0.1:6379>
一主两从
127.0.0.1:6379> info replication # Replication role:master connected_slaves:2 slave0:ip=127.0.0.1,port=6380,state=online,offset=1133,lag=0 slave1:ip=127.0.0.1,port=6381,state=online,offset=1133,lag=0 master_repl_offset:1133 repl_backlog_active:1 repl_backlog_size:1048576 repl_backlog_first_byte_offset:2 repl_backlog_histlen:1132 127.0.0.1:6379> 127.0.0.1:6380> info replication # Replication role:slave master_host:127.0.0.1 master_port:6379 master_link_status:up master_last_io_seconds_ago:6 master_sync_in_progress:0 slave_repl_offset:1175 slave_priority:100 slave_read_only:1 connected_slaves:0 master_repl_offset:407 repl_backlog_active:1 repl_backlog_size:1048576 repl_backlog_first_byte_offset:2 repl_backlog_histlen:406 127.0.0.1:6380> 127.0.0.1:6381> info replication # Replication role:slave master_host:127.0.0.1 master_port:6379 master_link_status:up master_last_io_seconds_ago:3 master_sync_in_progress:0 slave_repl_offset:1203 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:0 127.0.0.1:6381>
薪火相传
127.0.0.1:6379> info replication # Replication role:master connected_slaves:1 slave0:ip=127.0.0.1,port=6380,state=online,offset=797,lag=1 master_repl_offset:797 repl_backlog_active:1 repl_backlog_size:1048576 repl_backlog_first_byte_offset:2 repl_backlog_histlen:796 127.0.0.1:6380> info replication # Replication role:slave master_host:127.0.0.1 master_port:6379 master_link_status:up master_last_io_seconds_ago:9 master_sync_in_progress:0 slave_repl_offset:797 slave_priority:100 slave_read_only:1 connected_slaves:1 slave0:ip=127.0.0.1,port=6381,state=online,offset=29,lag=1 master_repl_offset:29 repl_backlog_active:1 repl_backlog_size:1048576 repl_backlog_first_byte_offset:2 repl_backlog_histlen:28 127.0.0.1:6380> 127.0.0.1:6381> info replication # Replication role:slave master_host:127.0.0.1 master_port:6380 master_link_status:up master_last_io_seconds_ago:1 master_sync_in_progress:0 slave_repl_offset:15 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:0 127.0.0.1:6381>
反客为主
127.0.0.1:6379> shutdown not connected> exit [root@hadoop100 myredis]# redis-server /myredis/redis6379.conf [root@hadoop100 myredis]# redis-cli -p 6379 127.0.0.1:6379> info replication # Replication role:master connected_slaves:0 master_repl_offset:0 repl_backlog_active:0 repl_backlog_size:1048576 repl_backlog_first_byte_offset:0 repl_backlog_histlen:0 127.0.0.1:6379> 127.0.0.1:6380> slaveof no one OK 127.0.0.1:6380> info replication # Replication role:master connected_slaves:0 master_repl_offset:1303 repl_backlog_active:1 repl_backlog_size:1048576 repl_backlog_first_byte_offset:2 repl_backlog_histlen:1302 127.0.0.1:6380> set k12 v12 OK 127.0.0.1:6380> 127.0.0.1:6381> info replication # Replication role:slave master_host:127.0.0.1 master_port:6380 master_link_status:up master_last_io_seconds_ago:2 master_sync_in_progress:0 slave_repl_offset:1539 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:0 127.0.0.1:6381>
[root@hadoop100 myredis]# ll 总用量 284 -rw-r--r--. 1 root root 14817 3月 14 18:36 6379.log -rw-r--r--. 1 root root 25084 3月 14 18:36 6380.log -rw-r--r--. 1 root root 38364 3月 14 18:36 6381.log -rw-r--r--. 1 root root 68 3月 14 18:36 dump6379.rdb -rw-r--r--. 1 root root 68 3月 14 18:36 dump6380.rdb -rw-r--r--. 1 root root 68 3月 14 18:36 dump6381.rdb -rw-r--r--. 1 root root 41420 3月 14 16:48 redis6379.conf -rw-r--r--. 1 root root 41420 3月 14 16:49 redis6380.conf -rw-r--r--. 1 root root 41420 3月 14 16:50 redis6381.conf -rw-r--r--. 1 root root 41405 3月 14 11:49 redis_aof.conf -rw-r--r--. 1 root root 43 3月 14 18:43 sentinel.conf [root@hadoop100 myredis]# cat sentinel.conf sentinel monitor host6379 127.0.0.1 6379 1 [root@hadoop100 myredis]#
[root@hadoop100 bin]# ll
总用量 15464
-rw-r--r--. 1 root root 281 3月 14 13:20 appendonly.aof
-rw-r--r--. 1 root root 18 3月 14 17:07 dump.rdb
-rwxr-xr-x. 1 root root 4589155 3月 6 19:30 redis-benchmark
-rwxr-xr-x. 1 root root 22217 3月 6 19:30 redis-check-aof
-rwxr-xr-x. 1 root root 45435 3月 6 19:30 redis-check-dump
-rwxr-xr-x. 1 root root 4693114 3月 6 19:30 redis-cli
lrwxrwxrwx. 1 root root 12 3月 6 19:30 redis-sentinel -> redis-server
-rwxr-xr-x. 1 root root 6466389 3月 6 19:30 redis-server
[root@hadoop100 bin]# redis-sentinel /myredis/sentinel.conf //启动哨兵模式
哨兵模式
127.0.0.1:6379> shutdown not connected> exit [root@hadoop100 myredis]# redis-server /myredis/redis6379.conf [root@hadoop100 myredis]# redis-cli -p 6379 127.0.0.1:6379> info replication # Replication role:slave master_host:127.0.0.1 master_port:6381 master_link_status:up master_last_io_seconds_ago:2 master_sync_in_progress:0 slave_repl_offset:2217 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:0 127.0.0.1:6379> 127.0.0.1:6380> info replication # Replication role:slave master_host:127.0.0.1 master_port:6381 master_link_status:up master_last_io_seconds_ago:0 master_sync_in_progress:0 slave_repl_offset:570 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:2 repl_backlog_histlen:47596 127.0.0.1:6380> 127.0.0.1:6381> info replication # Replication role:master connected_slaves:1 slave0:ip=127.0.0.1,port=6380,state=online,offset=836,lag=0 master_repl_offset:836 repl_backlog_active:1 repl_backlog_size:1048576 repl_backlog_first_byte_offset:2 repl_backlog_histlen:835 127.0.0.1:6381>
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