Redis哨兵配置

　　Sentinel（哨兵）是Redis 的高可用性解决方案：由一个或多个Sentinel 实例组成的Sentinel 系统可以监视任意多个主服务器，以及这些主服务器属下的所有从服务器，并在被监视的主服务器进入下线状态时，自动将下线主服务器属下的某个从服务器升级为新的主服务器。

　　192.168.56.11的redis配置如下

bind 0.0.0.0
protected-mode yes
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile "/var/run/redis_6379.pid"
loglevel notice
logfile ""
databases 16
always-show-logo yes
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename "dump.rdb"
dir "/etc/redis"
masterauth "123456"
slave-serve-stale-data yes
slave-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
slave-priority 100
requirepass "123456"
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
slave-lazy-flush no
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
aof-use-rdb-preamble no
lua-time-limit 5000
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 slave 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
aof-rewrite-incremental-fsync yes

　　192.168.56.12的redis配置是一样的

　　启动两台主机的redis

redis-server /etc/redis/6379.conf

　　在192.168.56.12的redis命令行执行命令设置主从

slaveof 192.168.56.11 6379

　　在11上面查看主从状态

　　在12上面查看主从状态

　　设置两台主机的哨兵配置/etc/redis/sentinel.conf

protected-mode no
port 26379
daemonize yes
logfile "/var/log/redis/sentinel.log"
dir "/tmp"
sentinel myid 3e945f7ff33d43dc4a451fa13297bd0bd3940338
sentinel monitor mymaster 192.168.56.11 6379 2
sentinel auth-pass mymaster 123456
sentinel config-epoch mymaster 4
sentinel leader-epoch mymaster 4

　　两台主机配置一样　　

　　只需要设置监控的master对应的主机IP和端口，不要忘记需要设置加密的密码

　　启动哨兵