Redis教程

Redis 一主两从三哨兵

本文主要是介绍Redis 一主两从三哨兵，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

 

  1. 安装redis相关依赖

    yum install gcc gcc-c++ automake autoconf libtool make -y

  2. 下载redis

    wget https://download.redis.io/releases/redis-4.0.14.tar.gz

  3. 解压redis

    tar -zxvg redis-4.0.14.tar.gz

  4. 进入redis目录编译并安装

    cd /data/redis-4.0.14
make && make install

  5. 修改redis配置文件

    daemonize yes
#pidfile "/home/redis/redis/redisRun/redis_6379.pid"
port 6379
timeout 0
tcp-keepalive 0
loglevel notice
logfile "/var/log/redis/redis.log"
databases 16
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename "dump.rdb"
#dir "/home/redis/redisdb"
#主节点密码
masterauth "Pw!123456"
slave-serve-stale-data yes
slave-read-only yes
repl-disable-tcp-nodelay no
slave-priority 102
requirepass "Pw!123456"
appendonly yes
# appendfsync always
appendfsync everysec
# appendfsync no
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
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
activerehashing yes

  6. 配置redis自启服务文件

    vi /etc/systemd/system/redis.service
​
[Unit]
​
Description=redis-server
​
After=network.target
​
[Service]
​
Type=forking
​
ExecStart=/data/redis-4.0.14/bin/redis-server /data/redis-4.0.14/redis.conf
​
PrivateTmp=true
​
[Install]
​
WantedBy=multi-user.targe

  7. 设置redis开机自启

    重载配置：systemctl daemon-reload
​
启动服务：systemctl start redis.service
​
添加开机自启：systemctl enable redis.service
​
查看服务状态1）：systemctl status redis.service
​
查看服务状态2)：ps -ef|grep redis

  8. 开放端口限制

    firewall-cmd --zone=public --add-port=6379/tcp --permanent
​
生效配置：firewall-cmd --reload

  9. 其他2台从机器以上步骤一致

  10. 修改哨兵配置文件(sentinel.conf)

    port 26379
bind 0.0.0.0
daemonize yes
sentinel myid 533c6dcc3deb4975df2813da6bb5e7e4c6dcb6d3
sentinel deny-scripts-reconfig yes
sentinel monitor mymaster 192.168.0.103 6379 2
sentinel down-after-milliseconds mymaster 5000
sentinel failover-timeout mymaster 60000
logfile "/var/log/redis/sentinel.log"
# Generated by CONFIG REWRITE
dir "/data/redis-4.0.14"
sentinel auth-pass mymaster Pw!123456
sentinel config-epoch mymaster 4
sentinel leader-epoch mymaster 3
sentinel known-slave mymaster 192.168.0.104 6379
sentinel known-slave mymaster 192.168.0.102 6379
sentinel known-sentinel mymaster 192.168.0.104 26379 0339c0dc9ae30bb0fde907f67ce707d602fdc97f
sentinel known-sentinel mymaster 192.168.0.103 26379 ee5430bb33d99dc23598320a07e94e8658a8f6a4
sentinel current-epoch 4

  11. 开放哨兵端口限制

    firewall-cmd --zone=public --add-port=26379/tcp --permanent
​
生效配置：firewall-cmd --reload

  12. 配置哨兵自启

    vi /etc/systemd/system/redis-sentinel.service
​
​
[Unit]
​
Description=redis-sentinel-server
​
After=redis-server
​
[Service]
​
Type=forking
​
ExecStart=/data/redis-4.0.14/bin/redis-server /data/redis-4.0.14/sentinel.conf --sentinel
​
PrivateTmp=true
​
[Install]
​
WantedBy=multi-user.target

  13. 设置redis-sentinel开机自启

    重载配置：systemctl daemon-reload
​
启动服务：systemctl start redis-sentinel.service
​
添加开机自启：systemctl enable redis-sentinel.service
​
查看服务状态1）：systemctl status redis-sentinel.service
​
查看服务状态2)：ps -ef|grep redis

  14. 启动redis和哨兵

    任意一台机器
redis-cli -p 6379
auth redis密码
info #查看信息 是否是主从模式
​
宕机master后是否重新选举master
  15.  
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