无意中发现了一个巨牛的人工智能教程，忍不住分享一下给大家。教程不仅是零基础，通俗易懂，而且非常风趣幽默，像看小说一样！觉得太牛了，所以分享给大家。点这里可以跳转到教程。
安装
redis 5.0 安装
官网下载安装包
解压
安装
sudo yum install gcc gcc-c++ -y
make
make install PREFIX=/apprun/redis
哨兵集群搭建
节点分布
集群机器如下：
172.28.72.104
master 8379
slave 8380
sentinel 28379
172.28.72.124
slave 8381
sentinel 28380
sentinel 28381
master配置
| port 8379 protected-mode no tcp-backlog 511 timeout 0 tcp-keepalive 300 pidfile /apprun/redis/redis_8379.pid loglevel notice logfile "/apprun/redis/redis_8379.log" databases 16 always-show-logo yes #save 900 1 #save 300 10 #save 60 10000 stop-writes-on-bgsave-error yes rdbcompression yes rdbchecksum yes dbfilename dump.rdb appendonly no appendfilename "appendonly.aof" no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb aof-load-truncated yes aof-use-rdb-preamble yes hz 10 dynamic-hz yes #slave config masterauth cmcc2019 requirepass cmcc2019 |
slave配置
同上
启动完slave之后，执行命令slaveof masterip masterport
sentinel配置
| sentinel monitor mymaster 172.28.72.104 8379 2 #注意配置的位置 sentinel auth-pass mymaster cmcc2019 sentinel down-after-milliseconds mymaster 10000 sentinel failover-timeout mymaster 30000 sentinel parallel-syncs mymaster 2 |
切记sentinel配置不要手贱复制粘贴上面master的配置过来改改，requirepass这个配置一定不能要，否则jedis sentinel客户端连不上。
启动sentinel，两种方式
| ./src/redis-sentinel redis_sentinel.conf & |
| ./src/redis-server redis_sentinel_28380.conf --sentinel & |
启动完之后配置被复写了
| #sentinel sentinel myid 6a2d34d9d0955483b2f973da329c9360cd5c5080 sentinel deny-scripts-reconfig yes sentinel monitor mymaster 172.28.72.104 8379 2 sentinel down-after-milliseconds mymaster 10000 sentinel failover-timeout mymaster 30000 # Generated by CONFIG REWRITE dir "/apprun/redis/redis-5.0.7" sentinel parallel-syncs mymaster 2 sentinel auth-pass mymaster cmcc2019 sentinel config-epoch mymaster 0 sentinel leader-epoch mymaster 0 sentinel known-replica mymaster 172.28.72.124 8381 sentinel known-replica mymaster 172.28.72.104 8380 sentinel known-sentinel mymaster 172.28.72.104 28379 f9e93ad4558f8e36fba261c76f402e32a7d89f57 sentinel known-sentinel mymaster 172.28.72.124 28381 13450651a45b99ecb23e93309dfa1395b80f236d sentinel current-epoch 0 |
哨兵模式验证
杀掉master进程
从日志及集群信息可以看出来，master已经切换了
原来的master重新启动后观察，主备信息已经变更了
