1、安装环境
集群机器 redis服务 哨兵(sentinel) 描述
虚拟机：10.202.107.207 redis服务端口6379 sentinel服务端口26379 主节点
虚拟机：10.202.107.208 redis服务端口6379 sentinel服务端口26379 从节点
虚拟机：10.202.107.209 redis服务端口6379 sentinel服务端口26379 从节点
即：3个redis服务（1主2从），3个sentinel服务
2、Redis安装（请参照Redis安装）
3、Redis主从配置
3.1、创建目录
mkdir conf mkdir run mkdir logs mkdir data mkdir sentinel
虚拟机：10.202.107.207 redis.conf配置文件：
daemonize yes pidfile /usr/dev/redis/redis-4.0.1/run/redis.pid port 6379 tcp-backlog 511 bind 10.202.107.207 timeout 180 tcp-keepalive 60 loglevel notice logfile /usr/dev/redis/redis-4.0.1/logs/redis.log databases 16 save 900 1 save 300 10 save 60 100 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename its_redis.rdb dir /usr/dev/redis/redis-4.0.1/data 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 maxclients 1000 maxmemory 4096mb maxmemory-policy volatile-lru maxmemory-samples 3 appendonly no appendfilename its_redis.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 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-entries 512 list-max-ziplist-value 64 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 masterauth 123456
虚拟机：10.202.107.208 redis.conf配置文件：
daemonize yes pidfile /usr/dev/redis/redis-4.0.1/run/redis.pid port 6379 tcp-backlog 511 bind 10.202.107.208 timeout 180 tcp-keepalive 60 loglevel notice logfile /usr/dev/redis/redis-4.0.1/logs/redis.log databases 16 save 900 1 save 300 10 save 60 100 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename its_redis.rdb dir /usr/dev/redis/redis-4.0.1/data 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 maxclients 1000 maxmemory 4096mb maxmemory-policy volatile-lru maxmemory-samples 3 appendonly no appendfilename its_redis.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 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-entries 512 list-max-ziplist-value 64 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 masterauth 123456 slaveof 10.202.107.207 6379
虚拟机：10.202.107.209 redis.conf配置文件：
daemonize yes pidfile /usr/dev/redis/redis-4.0.1/run/redis.pid port 6379 tcp-backlog 511 bind 10.202.107.209 timeout 180 tcp-keepalive 60 loglevel notice logfile /usr/dev/redis/redis-4.0.1/logs/redis.log databases 16 save 900 1 save 300 10 save 60 100 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename its_redis.rdb dir /usr/dev/redis/redis-4.0.1/data 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 maxclients 1000 maxmemory 4096mb maxmemory-policy volatile-lru maxmemory-samples 3 appendonly no appendfilename its_redis.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 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-entries 512 list-max-ziplist-value 64 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 masterauth 123456 slaveof 10.202.107.207 6379
相关命令：
1.查看redis进程 ps -ef|grep redis 2.启动redis server ./src/redis-server redis.conf 3.启动redis Client ./src/redis-cli -h 10.202.107.207 -p 6379 -a 123456 4.输入密码 10.202.107.207:6379> auth 123456 5.查看信息 info
查看主从关系
./src/redis-cli -h 10.202.107.207 -p 6379 -a 123456
10.202.107.207:6379> info replication
主从切换
主服务挂掉了后从执行,将从切换为主：
./src/redis-cli -p 6380 slaveof NO ONE
主恢复后从执行：
./src/redis-cli -p 6380 slaveof 10.202.107.207 6379
4、Sentinel主从配置
虚拟机：10.202.107.207 sentinel.conf配置文件：
# 守护进程模式，即后台模式 daemonize yes port 26379 bind 10.202.107.207 sentinel monitor its_sentinel 10.202.107.207 6379 2#2表示在sentinel集群中只要有两个节点检测到redis主节点出故障就进行切换，单sentinel节点无效 #指定工作目录 dir "/usr/dev/redis/redis-4.0.1/sentinel" pidfile "/usr/dev/redis/redis-4.0.1/run/sentinel.pid" #日志级别 loglevel notice logfile "/usr/dev/redis/redis-4.0.1/logs/sentinel.log" #如果6秒后,master仍没活过来，则启动failover sentinel failover-timeout its_sentinel 60000 #redis主节点密码 sentinel auth-pass its_sentinel 123456 #选项指定了在执行故障转移时， 最多可以有多少个从服务器同时对新的主服务器进行同步， 这个数字越小， 完成故障转移所需的时间就 sentinel config-epoch its_sentinel 0 sentinel leader-epoch its_sentinel 0 sentinel current-epoch 1 sentinel announce-ip "10.202.107.207"
虚拟机：10.202.107.208 sentinel.conf配置文件：
# 守护进程模式，即后台模式 daemonize yes port 26379 bind 10.202.107.208 sentinel monitor its_sentinel 10.202.107.207 6379 2#2表示在sentinel集群中只要有两个节点检测到redis主节点出故障就进行切换，单sentinel节点无效 #指定工作目录 dir "/usr/dev/redis/redis-4.0.1/sentinel" pidfile "/usr/dev/redis/redis-4.0.1/run/sentinel.pid" #日志级别 loglevel notice logfile "/usr/dev/redis/redis-4.0.1/logs/sentinel.log" #如果6秒后,master仍没活过来，则启动failover sentinel failover-timeout its_sentinel 60000 #redis主节点密码 sentinel auth-pass its_sentinel 123456 #选项指定了在执行故障转移时， 最多可以有多少个从服务器同时对新的主服务器进行同步， 这个数字越小， 完成故障转移所需的时间就 sentinel config-epoch its_sentinel 0 sentinel leader-epoch its_sentinel 0 sentinel current-epoch 1 sentinel announce-ip "10.202.107.208"
虚拟机：10.202.107.209 sentinel.conf配置文件：
# 守护进程模式，即后台模式 daemonize yes port 26379 bind 10.202.107.209 sentinel monitor its_sentinel 10.202.107.207 6379 2#2表示在sentinel集群中只要有两个节点检测到redis主节点出故障就进行切换，单sentinel节点无效 #指定工作目录 dir "/usr/dev/redis/redis-4.0.1/sentinel" pidfile "/usr/dev/redis/redis-4.0.1/run/sentinel.pid" #日志级别 loglevel notice logfile "/usr/dev/redis/redis-4.0.1/logs/sentinel.log" #如果6秒后,master仍没活过来，则启动failover sentinel failover-timeout its_sentinel 60000 #redis主节点密码 sentinel auth-pass its_sentinel 123456 #选项指定了在执行故障转移时， 最多可以有多少个从服务器同时对新的主服务器进行同步， 这个数字越小， 完成故障转移所需的时间就 sentinel config-epoch its_sentinel 0 sentinel leader-epoch its_sentinel 0 sentinel current-epoch 1 sentinel announce-ip "10.202.107.209"
启动sentinel服务： ./src/redis-sentinel ./conf/sentinel.conf