1、节点介绍
master(192.168.230.21): 默认主服务
slaves1(192.168.230.22): 默认从服务
slaves2(192.168.230.23): 默认从服务
2、master的redis.conf的主要配置
daemonize yes
port 6379
bind 192.168.230.21
requirepass "123456"
3、master的sentinel.conf主要配置
port 26379
sentinel monitor mymaster 192.168.230.23 6379 2
sentinel auth-pass mymaster 123456
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 180000
4、slaves1的redis.conf的主要配置
daemonize yes
port 6379
bind 192.168.230.22
requirepass 123456
#连接主机和端口号
slaveof master 6379
#设置连接的主机密码
masterauth 123456
5、slaves1的sentinel.conf主要配置
port 26379
sentinel monitor mymaster 192.168.230.23 6379 1
sentinel auth-pass mymaster 123456
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 180000
6、slaves2的redis.conf的主要配置
daemonize yes
port 6379
bind 192.168.230.23
requirepass 123456
#连接主机和端口号
slaveof master 6379
#设置连接的主机密码
masterauth 123456
7、slaves2的sentinel.conf主要配置
port 26379
sentinel monitor mymaster 192.168.230.23 6379 1
sentinel auth-pass mymaster 123456
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 180000
8、分别启动redis主从服务
[root@master bin]# ./redis-server ./redis.conf
[root@slaves1 bin]# ./redis-server ./redis.conf
[root@slaves2 bin]# ./redis-server ./redis.conf
9、分别启动哨兵
[root@master bin]# ./redis-sentinel /opt/softWare/redis3.0/redis-3.0.0/sentinel.conf
[root@master bin]# ./redis-sentinel /opt/softWare/redis3.0/redis-3.0.0/sentinel.conf
8709:X 27 Mar 17:09:33.174 * Increased maximum number of open files to 10032 (it was originally set to 1024).
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 3.0.0 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in sentinel mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 26379
| `-._ `._ / _.-' | PID: 8709
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
8709:X 27 Mar 17:09:33.193 # Sentinel runid is 17799aca9e840e85a011caf97ca51e423fddbd24
8709:X 27 Mar 17:09:33.193 # +monitor master mymaster 192.168.230.21 6379 quorum 2
8709:X 27 Mar 17:09:34.178 * +slave slave 192.168.230.22:6379 192.168.230.22 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:09:34.179 * +slave slave 192.168.230.23:6379 192.168.230.23 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:09:42.000 * +sentinel sentinel 192.168.230.22:26379 192.168.230.22 26379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:09:45.351 * +sentinel sentinel 192.168.230.23:26379 192.168.230.23 26379 @ mymaster 192.168.230.21 6379
[root@slaves1 bin]# ./redis-sentinel /opt/softWare/redis3.0/redis-3.0.0/sentinel.conf
[root@slaves2 bin]# ./redis-sentinel /opt/softWare/redis3.0/redis-3.0.0/sentinel.conf
192.168.230.21:6379> info replication
# Replication
role:master
connected_slaves:2
slave0:ip=192.168.230.22,port=6379,state=online,offset=10552,lag=1
slave1:ip=192.168.230.23,port=6379,state=online,offset=10552,lag=1
master_repl_offset:10552
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:2
repl_backlog_histlen:10551
192.168.230.22:6379> info replication
# Replication
role:slave
master_host:192.168.230.21
master_port:6379
master_link_status:up
master_last_io_seconds_ago:1
master_sync_in_progress:0
slave_repl_offset:17172
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
192.168.230.23:6379> info replication
# Replication
role:slave
master_host:192.168.230.21
master_port:6379
master_link_status:up
master_last_io_seconds_ago:1
master_sync_in_progress:0
slave_repl_offset:21061
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
11、模拟master上redis主服务挂掉
[root@master ~]# netstat -lnp | grep 6379
tcp 0 0 0.0.0.0:26379 0.0.0.0:* LISTEN 8709/./redis-sentin
tcp 0 0 192.168.230.21:6379 0.0.0.0:* LISTEN 8542/./redis-server
tcp6 0 0 :::26379 :::* LISTEN 8709/./redis-sentin
[root@master ~]# kill -9 8542
[root@master ~]# netstat -lnp | grep 6379
tcp 0 0 0.0.0.0:26379 0.0.0.0:* LISTEN 8709/./redis-sentin
tcp6 0 0 :::26379 :::* LISTEN 8709/./redis-sentin
[root@master ~]#
[root@master bin]# ./redis-sentinel /opt/softWare/redis3.0/redis-3.0.0/sentinel.conf
8709:X 27 Mar 17:09:33.174 * Increased maximum number of open files to 10032 (it was originally set to 1024).
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 3.0.0 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in sentinel mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 26379
| `-._ `._ / _.-' | PID: 8709
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
8709:X 27 Mar 17:09:33.193 # Sentinel runid is 17799aca9e840e85a011caf97ca51e423fddbd24
8709:X 27 Mar 17:09:33.193 # +monitor master mymaster 192.168.230.21 6379 quorum 2
8709:X 27 Mar 17:09:34.178 * +slave slave 192.168.230.22:6379 192.168.230.22 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:09:34.179 * +slave slave 192.168.230.23:6379 192.168.230.23 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:09:42.000 * +sentinel sentinel 192.168.230.22:26379 192.168.230.22 26379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:09:45.351 * +sentinel sentinel 192.168.230.23:26379 192.168.230.23 26379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:24.746 # +sdown master mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:24.809 # +odown master mymaster 192.168.230.21 6379 #quorum 3/2
8709:X 27 Mar 17:12:24.809 # +new-epoch 1
8709:X 27 Mar 17:12:24.809 # +try-failover master mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:24.812 # +vote-for-leader 17799aca9e840e85a011caf97ca51e423fddbd24 1
8709:X 27 Mar 17:12:24.818 # 192.168.230.22:26379 voted for 17799aca9e840e85a011caf97ca51e423fddbd24 1
8709:X 27 Mar 17:12:24.818 # 192.168.230.23:26379 voted for 17799aca9e840e85a011caf97ca51e423fddbd24 1
8709:X 27 Mar 17:12:24.913 # +elected-leader master mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:24.913 # +failover-state-select-slave master mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:24.996 # +selected-slave slave 192.168.230.22:6379 192.168.230.22 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:24.996 * +failover-state-send-slaveof-noone slave 192.168.230.22:6379 192.168.230.22 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:25.079 * +failover-state-wait-promotion slave 192.168.230.22:6379 192.168.230.22 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:25.833 # +promoted-slave slave 192.168.230.22:6379 192.168.230.22 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:25.833 # +failover-state-reconf-slaves master mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:25.920 * +slave-reconf-sent slave 192.168.230.23:6379 192.168.230.23 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:26.850 * +slave-reconf-inprog slave 192.168.230.23:6379 192.168.230.23 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:26.925 # -odown master mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:27.916 * +slave-reconf-done slave 192.168.230.23:6379 192.168.230.23 6379 @ mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:27.976 # +failover-end master mymaster 192.168.230.21 6379
8709:X 27 Mar 17:12:27.976 # +switch-master mymaster 192.168.230.21 6379 192.168.230.22 6379
8709:X 27 Mar 17:12:27.977 * +slave slave 192.168.230.23:6379 192.168.230.23 6379 @ mymaster 192.168.230.22 6379
8709:X 27 Mar 17:12:27.987 * +slave slave 192.168.230.21:6379 192.168.230.21 6379 @ mymaster 192.168.230.22 6379
[root@slaves1 bin]# ./redis-sentinel /opt/softWare/redis3.0/redis-3.0.0/sentinel.conf
7859:X 27 Mar 17:09:39.881 * Increased maximum number of open files to 10032 (it was originally set to 1024).
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 3.0.0 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in sentinel mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 26379
| `-._ `._ / _.-' | PID: 7859
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
7859:X 27 Mar 17:09:39.908 # Sentinel runid is d3d98686367898f1e73404a3333e82b409e04a1f
7859:X 27 Mar 17:09:39.908 # +monitor master mymaster 192.168.230.21 6379 quorum 2
7859:X 27 Mar 17:09:40.888 * +slave slave 192.168.230.22:6379 192.168.230.22 6379 @ mymaster 192.168.230.21 6379
7859:X 27 Mar 17:09:40.888 * +slave slave 192.168.230.23:6379 192.168.230.23 6379 @ mymaster 192.168.230.21 6379
7859:X 27 Mar 17:09:41.426 * +sentinel sentinel 192.168.230.21:26379 192.168.230.21 26379 @ mymaster 192.168.230.21 6379
7859:X 27 Mar 17:09:45.351 * +sentinel sentinel 192.168.230.23:26379 192.168.230.23 26379 @ mymaster 192.168.230.21 6379
7859:X 27 Mar 17:12:24.738 # +sdown master mymaster 192.168.230.21 6379
7859:X 27 Mar 17:12:24.815 # +new-epoch 1
7859:X 27 Mar 17:12:24.817 # +vote-for-leader 17799aca9e840e85a011caf97ca51e423fddbd24 1
7859:X 27 Mar 17:12:24.839 # +odown master mymaster 192.168.230.21 6379 #quorum 2/2
7859:X 27 Mar 17:12:24.839 # Next failover delay: I will not start a failover before Fri Mar 27 17:18:25 2020
7859:X 27 Mar 17:12:25.922 # +config-update-from sentinel 192.168.230.21:26379 192.168.230.21 26379 @ mymaster 192.168.230.21 6379
7859:X 27 Mar 17:12:25.922 # +switch-master mymaster 192.168.230.21 6379 192.168.230.22 6379
7859:X 27 Mar 17:12:25.922 * +slave slave 192.168.230.23:6379 192.168.230.23 6379 @ mymaster 192.168.230.22 6379
7859:X 27 Mar 17:12:25.925 * +slave slave 192.168.230.21:6379 192.168.230.21 6379 @ mymaster 192.168.230.22 6379
7859:X 27 Mar 17:12:55.976 # +sdown slave 192.168.230.21:6379 192.168.230.21 6379 @ mymaster 192.168.230.22 6379
[root@slaves2 bin]# ./redis-sentinel /opt/softWare/redis3.0/redis-3.0.0/sentinel.conf
7806:X 27 Mar 17:09:43.225 * Increased maximum number of open files to 10032 (it was originally set to 1024).
_._
_.-``__ ''-._
_.-`` `. `_. ''-._ Redis 3.0.0 (00000000/0) 64 bit
.-`` .-```. ```\/ _.,_ ''-._
( ' , .-` | `, ) Running in sentinel mode
|`-._`-...-` __...-.``-._|'` _.-'| Port: 26379
| `-._ `._ / _.-' | PID: 7806
`-._ `-._ `-./ _.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' | http://redis.io
`-._ `-._`-.__.-'_.-' _.-'
|`-._`-._ `-.__.-' _.-'_.-'|
| `-._`-._ _.-'_.-' |
`-._ `-._`-.__.-'_.-' _.-'
`-._ `-.__.-' _.-'
`-._ _.-'
`-.__.-'
7806:X 27 Mar 17:09:43.258 # Sentinel runid is d2002e34dbcfe29c3bda4848d73313726978ac95
7806:X 27 Mar 17:09:43.258 # +monitor master mymaster 192.168.230.21 6379 quorum 2
7806:X 27 Mar 17:09:44.231 * +slave slave 192.168.230.22:6379 192.168.230.22 6379 @ mymaster 192.168.230.21 6379
7806:X 27 Mar 17:09:44.231 * +slave slave 192.168.230.23:6379 192.168.230.23 6379 @ mymaster 192.168.230.21 6379
7806:X 27 Mar 17:09:44.353 * +sentinel sentinel 192.168.230.21:26379 192.168.230.21 26379 @ mymaster 192.168.230.21 6379
7806:X 27 Mar 17:09:44.913 * +sentinel sentinel 192.168.230.22:26379 192.168.230.22 26379 @ mymaster 192.168.230.21 6379
7806:X 27 Mar 17:12:24.725 # +sdown master mymaster 192.168.230.21 6379
7806:X 27 Mar 17:12:24.816 # +new-epoch 1
7806:X 27 Mar 17:12:24.817 # +vote-for-leader 17799aca9e840e85a011caf97ca51e423fddbd24 1
7806:X 27 Mar 17:12:25.781 # +odown master mymaster 192.168.230.21 6379 #quorum 3/2
7806:X 27 Mar 17:12:25.781 # Next failover delay: I will not start a failover before Fri Mar 27 17:18:25 2020
7806:X 27 Mar 17:12:25.927 # +config-update-from sentinel 192.168.230.21:26379 192.168.230.21 26379 @ mymaster 192.168.230.21 6379
7806:X 27 Mar 17:12:25.927 # +switch-master mymaster 192.168.230.21 6379 192.168.230.22 6379
7806:X 27 Mar 17:12:25.927 * +slave slave 192.168.230.23:6379 192.168.230.23 6379 @ mymaster 192.168.230.22 6379
7806:X 27 Mar 17:12:25.933 * +slave slave 192.168.230.21:6379 192.168.230.21 6379 @ mymaster 192.168.230.22 6379
7806:X 27 Mar 17:12:55.979 # +sdown slave 192.168.230.21:6379 192.168.230.21 6379 @ mymaster 192.168.230.22 6379
由此可知将230.22选为了主服务;
192.168.230.22:6379> info replication
# Replication
role:master
connected_slaves:1
slave0:ip=192.168.230.23,port=6379,state=online,offset=19026,lag=1
master_repl_offset:19169
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:2
repl_backlog_histlen:19168
# Replication
role:slave
master_host:192.168.230.22
master_port:6379
master_link_status:up
master_last_io_seconds_ago:0
master_sync_in_progress:0
slave_repl_offset:23487
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