部署redis sentinel
部署redis sentinel，节点信息：
172.17.9.131 172.17.9.133 172.17.9.136
redis配置文件redis_6379.conf
[root@host redis6379]# cat redis_6379.conf (redis cluster配置文件，禁用cluster) bind 0.0.0.0 protected-mode no port 6379 tcp-backlog 511 timeout 0 tcp-keepalive 300 daemonize yes supervised no pidfile "/data/redis6379/redis6379.pid" loglevel warning logfile "/data/redis6379/redis6379.log" masterauth "hankyoon" requirepass "hankyoon" databases 16 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename "redis6379.rdb" dir "/data/redis6379" replica-serve-stale-data yes replica-read-only yes repl-diskless-sync no repl-diskless-sync-delay 5 repl-disable-tcp-nodelay no replica-priority 100 min-replicas-to-write 0 min-replicas-max-lag 10 maxmemory 6gb maxmemory-policy volatile-lru appendonly no appendfilename "appendonly.aof" appendfsync everysec no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb aof-load-truncated yes lua-time-limit 5000 #cluster-enabled yes #cluster-config-file "nodes6379.conf" #cluster-node-timeout 15000 slowlog-log-slower-than 10000 slowlog-max-len 128 latency-monitor-threshold 0 notify-keyspace-events "" hash-max-ziplist-entries 512 hash-max-ziplist-value 64 list-max-ziplist-size -2 list-compress-depth 0 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 hll-sparse-max-bytes 3000 activerehashing yes client-output-buffer-limit normal 0 0 0 client-output-buffer-limit replica 0 0 0 client-output-buffer-limit pubsub 32mb 8mb 60 hz 10 aof-rewrite-incremental-fsync yes # Generated by CONFIG REWRITE #cluster-require-full-coverage no repl-timeout 600 #cluster-migration-barrier 0
启动三个单节点redis：
[root@host 172.17.9.131]# /usr/local/bin/redis-server /data/redis6379/redis_6379.conf [root@host 172.17.9.133]# /usr/local/bin/redis-server /data/redis6379/redis_6379.conf [root@host 172.17.9.136]# /usr/local/bin/redis-server /data/redis6379/redis_6379.conf
哨兵配置文件sentinel.conf
port 26379 daemonize yes pidfile /data/redis6379/sentinel_26379.pid logfile "/data/redis6379/sentinel_6379.log" dir /data/redis6379 sentinel monitor mymaster 172.17.9.131 6379 2 sentinel down-after-milliseconds mymaster 30000 sentinel parallel-syncs mymaster 1 sentinel failover-timeout mymaster 180000 sentinel deny-scripts-reconfig yes sentinel auth-pass mymaster hankyoon #sentinel monitor mymaster 192.168.1.xxx 6379 1 #监控 人员组名/ip/端口/失效判定数（多少从端判断不同则认为master断开） #sentinel down-after-milliseconds mymaster 10000 #ping 超过 10000 毫秒则认为宕机 #sentinel failover-timeout mymaster 900000 #主从切换超过 30000 毫秒则认为失败 #sentinel can-failover mymaster yes #master断开后是否允许判断进行故障转移 #sentinel parallel-syncs mymaster 1 #从端继续同步新master的数量
启动哨兵监听：
[root@host 172.17.9.131]# /usr/local/bin/redis-sentinel /data/redis/sentinel_6379.conf [root@host 172.17.9.133]# /usr/local/bin/redis-sentinel /data/redis/sentinel_6379.conf [root@host 172.17.9.136]# /usr/local/bin/redis-sentinel /data/redis/sentinel_6379.conf
redis sentinel 相关命令：
[root@host 172.17.9.131]# redis-cli -h 127.0.0.1 -p 26379 -a "hankyoon" 127.0.0.1:26379> SENTINEL masters #列出所有master状态信息 127.0.0.1:26379> SENTINEL master mymaster #列出某个master状态信息 127.0.0.1:26379> SENTINEL slaves mymaster #列出某个master的所有slave和状态信息 127.0.0.1:26379> SENTINEL sentinels mymaster #列出某个master的sentinels 127.0.0.1:26379> SENTINEL get-master-addr-by-name mymaster #通过某个master获取其IP及port 127.0.0.1:26379> SENTINEL ckquorum mymaster #检查某个master是达到投票及故障转移条件 127.0.0.1:26379> SENTINEL flushconfig #强制重写 SENTINEL 配置到磁盘文件中 127.0.0.1:26379> SENTINEL failover mymaster #这个操作就注意了！强制进行故障转移！慎操作！
程序配置redis sentinel 端口为：26379
