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Redis-3.2.1sentinel安裝和配置小記

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三臺機器 192.168.21.6/7/8

redis版本: redis-3.2.1

分別在三臺機器上安裝redis:

解壓:

# tar zxvf  redis-3.2.1.tar.gz -C /usr/local

重命名:

# mv /usr/local/redis-3.2.1 /usr/local/redis

安裝:

# cd /usr/local/redis

# make 

# make install

# mkdir -p /usr/local/redis/etc

# cp /usr/local/redis/redis.conf /usr/local/redis/sentinel.conf /usr/local/redis/etc

登陸192.168.21.6,修改redis.conf:

#bind 127.0.0.1

bind 0.0.0.0

登陸192.168.21.7/8,修改redis.conf:

#bind 127.0.0.1

bind 0.0.0.0

slaveof  10.10.10.11  6379

保存退出,然后在三臺機器上啟動redis

/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf &

登陸192.168.21.6查看redis復(fù)制狀態(tài):

# redis-cli info replication

# Replication

role:master

connected_slaves:2

slave0:ip=192.168.21.8,port=6379,state=online,offset=198371,lag=0

slave1:ip=192.168.21.7,port=6379,state=online,offset=198371,lag=1

哨兵配置:

新建目錄:

# mkdir -p /usr/local/redis/db_26379

三臺機器上修改/usr/local/redis/sentinel.conf,加入如下配置:

dir "/usr/local/redis/db_26379"

pidfile "/usr/local/redis/db_26379/redis_26379.pid"

loglevel notice

logfile "/usr/local/redis/db_26379/sentinel.log"

bind 0.0.0.0

:x保存退出.

備注:其他配置的地方保持不變.

然后在192.168.21.6/7/8上分別啟動哨兵sentinel:

/usr/local/bin/redis-server /usr/local/redis/etc/sentinel.conf --sentinel &

然后在三臺機器192.168.21.6/7/8上執(zhí)行手動添加master的操作:

# redis-cli  -p 26379 sentinel monitor chenfeng 192.168.21.6 6379 2

OK

查看日志:

# tail -f /data/redis/db_26379/sentinel.log 

24177:X 20 Sep 10:06:06.563 * +sentinel sentinel 4eca392422764f3e3f4c0df7aaafc71c416c1a33 127.0.0.1 26379 @ mymaster 127.0.0.1 6379

24177:X 20 Sep 10:06:07.816 * +sentinel-invalid-addr sentinel 4eca392422764f3e3f4c0df7aaafc71c416c1a33 127.0.0.1 26379 @ mymaster 127.0.0.1 6379

24177:X 20 Sep 10:06:07.816 * +sentinel sentinel 40df350a0e705be6cbafbd83ae18ba51964f3a21 127.0.0.1 26379 @ mymaster 127.0.0.1 6379

24177:X 20 Sep 10:06:08.573 * +sentinel-address-switch master mymaster 127.0.0.1 6379 ip 127.0.0.1 port 26379 for 1ecb5a5c14cb85b33935037182fb04d107b47c82

24177:X 20 Sep 10:06:09.854 * +sentinel-address-switch master mymaster 127.0.0.1 6379 ip 127.0.0.1 port 26379 for 4eca392422764f3e3f4c0df7aaafc71c416c1a33

24177:X 20 Sep 10:06:40.396 # +monitor master chenfeng 192.168.21.6 6379 quorum 2

24177:X 20 Sep 10:06:40.446 * +slave slave 192.168.21.7:6379 192.168.21.7 6379 @ chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:06:40.447 * +slave slave 192.168.21.8:6379 192.168.21.8 6379 @ chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:06:52.383 * +sentinel sentinel 1ecb5a5c14cb85b33935037182fb04d107b47c82 192.168.21.7 26379 @ chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:06:54.482 * +sentinel sentinel 4eca392422764f3e3f4c0df7aaafc71c416c1a33 127.0.0.1 26379 @ chenfeng 192.168.21.6 6379

登陸192.168.21.6,手動模擬主庫故障:

#redis-cli -p 6379 shutdown

查看日志:

# tail -f /data/redis/db_26379/sentinel.log 

24177:X 20 Sep 10:08:11.071 # +sdown master mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:11.071 # +sdown master chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:11.172 # +odown master mymaster 127.0.0.1 6379 #quorum 4/2

24177:X 20 Sep 10:08:11.172 # +new-epoch 1

24177:X 20 Sep 10:08:11.172 # +try-failover master mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:11.181 # +vote-for-leader 4eca392422764f3e3f4c0df7aaafc71c416c1a33 1

24177:X 20 Sep 10:08:11.181 # +odown master chenfeng 192.168.21.6 6379 #quorum 3/2

24177:X 20 Sep 10:08:11.181 # +new-epoch 2

24177:X 20 Sep 10:08:11.181 # +try-failover master chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:11.198 # +vote-for-leader 4eca392422764f3e3f4c0df7aaafc71c416c1a33 2

24177:X 20 Sep 10:08:11.198 # 4eca392422764f3e3f4c0df7aaafc71c416c1a33 voted for 4eca392422764f3e3f4c0df7aaafc71c416c1a33 1

24177:X 20 Sep 10:08:11.198 # 4eca392422764f3e3f4c0df7aaafc71c416c1a33 voted for 4eca392422764f3e3f4c0df7aaafc71c416c1a33 2

24177:X 20 Sep 10:08:11.198 # 40df350a0e705be6cbafbd83ae18ba51964f3a21 voted for 4eca392422764f3e3f4c0df7aaafc71c416c1a33 1

24177:X 20 Sep 10:08:11.198 # 1ecb5a5c14cb85b33935037182fb04d107b47c82 voted for 4eca392422764f3e3f4c0df7aaafc71c416c1a33 1

24177:X 20 Sep 10:08:11.198 # 1ecb5a5c14cb85b33935037182fb04d107b47c82 voted for 4eca392422764f3e3f4c0df7aaafc71c416c1a33 2

24177:X 20 Sep 10:08:11.260 # +elected-leader master chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:11.260 # +failover-state-select-slave master chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:11.360 # +selected-slave slave 192.168.21.7:6379 192.168.21.7 6379 @ chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:11.361 * +failover-state-send-slaveof-noone slave 192.168.21.7:6379 192.168.21.7 6379 @ chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:11.451 * +failover-state-wait-promotion slave 192.168.21.7:6379 192.168.21.7 6379 @ chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:11.898 # +promoted-slave slave 192.168.21.7:6379 192.168.21.7 6379 @ chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:11.898 # +failover-state-reconf-slaves master chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:11.948 * +slave-reconf-sent slave 192.168.21.8:6379 192.168.21.8 6379 @ chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:12.269 # +vote-for-leader 4eca392422764f3e3f4c0df7aaafc71c416c1a33 2

24177:X 20 Sep 10:08:12.270 # 4eca392422764f3e3f4c0df7aaafc71c416c1a33 voted for 4eca392422764f3e3f4c0df7aaafc71c416c1a33 2

24177:X 20 Sep 10:08:12.270 # 40df350a0e705be6cbafbd83ae18ba51964f3a21 voted for 4eca392422764f3e3f4c0df7aaafc71c416c1a33 2

24177:X 20 Sep 10:08:12.270 # 1ecb5a5c14cb85b33935037182fb04d107b47c82 voted for 4eca392422764f3e3f4c0df7aaafc71c416c1a33 2

24177:X 20 Sep 10:08:12.353 # +elected-leader master mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:12.353 # +failover-state-select-slave master mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:12.424 # +selected-slave slave 192.168.21.7:6379 192.168.21.7 6379 @ mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:12.424 * +failover-state-send-slaveof-noone slave 192.168.21.7:6379 192.168.21.7 6379 @ mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:12.491 * +failover-state-wait-promotion slave 192.168.21.7:6379 192.168.21.7 6379 @ mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:12.916 * +slave-reconf-inprog slave 192.168.21.8:6379 192.168.21.8 6379 @ chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:12.916 * +slave-reconf-done slave 192.168.21.8:6379 192.168.21.8 6379 @ chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:13.015 # +failover-end master chenfeng 192.168.21.6 6379

24177:X 20 Sep 10:08:13.015 # +switch-master chenfeng 192.168.21.6 6379 192.168.21.7 6379

24177:X 20 Sep 10:08:13.016 * +slave slave 192.168.21.8:6379 192.168.21.8 6379 @ chenfeng 192.168.21.7 6379

24177:X 20 Sep 10:08:13.016 * +slave slave 192.168.21.6:6379 192.168.21.6 6379 @ chenfeng 192.168.21.7 6379

24177:X 20 Sep 10:08:13.297 # +promoted-slave slave 192.168.21.7:6379 192.168.21.7 6379 @ mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:13.297 # +failover-state-reconf-slaves master mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:13.352 * +slave-reconf-sent slave 192.168.21.8:6379 192.168.21.8 6379 @ mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:14.345 * +slave-reconf-inprog slave 192.168.21.8:6379 192.168.21.8 6379 @ mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:14.345 * +slave-reconf-done slave 192.168.21.8:6379 192.168.21.8 6379 @ mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:14.420 # +failover-end master mymaster 127.0.0.1 6379

24177:X 20 Sep 10:08:14.420 # +switch-master mymaster 127.0.0.1 6379 192.168.21.7 6379

24177:X 20 Sep 10:08:14.420 * +slave slave 192.168.21.8:6379 192.168.21.8 6379 @ mymaster 192.168.21.7 6379

24177:X 20 Sep 10:08:14.420 * +slave slave 127.0.0.1:6379 127.0.0.1 6379 @ mymaster 192.168.21.7 6379

24177:X 20 Sep 10:08:43.065 # +sdown slave 192.168.21.6:6379 192.168.21.6 6379 @ chenfeng 192.168.21.7 6379

24177:X 20 Sep 10:08:44.465 # +sdown slave 127.0.0.1:6379 127.0.0.1 6379 @ mymaster 192.168.21.7 6379

24177:X 20 Sep 10:09:13.307 # -sdown slave 192.168.21.6:6379 192.168.21.6 6379 @ chenfeng 192.168.21.7 6379

24177:X 20 Sep 10:09:13.595 # -sdown slave 127.0.0.1:6379 127.0.0.1 6379 @ mymaster 192.168.21.7 6379

24177:X 20 Sep 10:09:23.221 * +convert-to-slave slave 192.168.21.6:6379 192.168.21.6 6379 @ chenfeng 192.168.21.7 6379

24177:X 20 Sep 10:09:25.310 * +slave slave 192.168.21.6:6379 192.168.21.6 6379 @ mymaster 192.168.21.7 6379

從以上日志里可以發(fā)現(xiàn)哨兵自動選舉出了新的主庫192.168.21.7,故障切換成功。

再次啟動原主庫192.168.21.6,成為了192.168.21.7的從庫:

# redis-cli info replication

# Replication

role:slave

master_host:192.168.21.7

master_port:6379

master_link_status:up

master_last_io_seconds_ago:1

master_sync_in_progress:0

slave_repl_offset:25901

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

至此,哨兵模式安裝和測試完畢。


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