redis主从+哨兵模式搭建

redis安装

rpm或deb包安装

略

源码安装

#加压缩
tar -zxvf redis-5.0.10.tar.gz

#编译和编译安装
cd redis-5.0.10
make && make install

#移动编译结果和配置文件到/usr/local/redis目录下
mkdir -p /usr/local/redis
cp src/mkreleasehdr.sh /usr/local/redis/
cp src/redis-benchmark /usr/local/redis/
cp src/redis-check-aof /usr/local/redis/
cp src/redis-check-rdb /usr/local/redis/
cp src/redis-cli /usr/local/redis/
cp src/redis-sentinel /usr/local/redis/
cp src/redis-server /usr/local/redis/
cp src/redis-trib.rb /usr/local/redis/
cp src/redis-check-rdb /usr/local/redis/
cp redis.conf /usr/local/redis/
cp sentinel.conf /usr/local/redis/

注册为服务

vi /etc/init.d/redis

#！/bin/sh
# chkconfig: 2345 10 90
# description: Start and Stop redis

PORT=6379
REDISDIR=/usr/local/redis
EXEC=$REDISDIR/redis-server
REDIS_CLI=$REDISDIR/redis-cli
CONF=$REDISDIR/redis.conf
PASSWD="***"
PIDFILE=/var/run/redis_6379.pid

case "$1" in 
        start)
                if [ -f $PIDFILE ]
                then
                        echo "$PIDFILE exists, process is already running or crashed."
                else
                        echo "Starting Redis server..."
                        $EXEC $CONF
                fi
                if [ "$?"="0" ]
                then
                        echo "Redis is running..."
                fi
                ;;
        stop)
                if [ ! -f $PIDFILE ]
                then
                        echo "$PIDFILE exists, process is not running."
                else
                        PID=$(cat $PIDFILE)
                        echo "Stopping..."
                       $REDIS_CLI -p $PORT -a $PASSWD SHUTDOWN
                       sleep 2
                       while [ -x $PIDFILE ]
                       do
                                echo "Waiting for Redis to shutdown..."
                               sleep 1
                        done
                        echo "Redis stopped"
                fi
                ;;
        restart|force-reload)
                ${0} stop
                ${0} start
                ;;
        *)
               echo "Usage: /etc/init.d/redis {start|stop|restart|force-reload}" >&2
                exit 1
esac

赋权

chmod +x /etc/init.d/redis

开机自启

chkconfig redis on

修改redis.conf

1. 主从服务器的redis.conf文件都需要修改以下配置：

   #后台运行
   - daemonize no
   + daemonize yes
   
   #关闭保护模式，允许远程访问
   - protected-mode yes
   + protected-mode no
   
   #注释ip绑定
   - bind 127.0.0.1
   + #bind 127.0.0.1
   
   #连接密码（可不填
   + requirepass ***
   
   #master密码（若填了连接密码时需要填写
   + masterauth ***

2. 从服务器的redis.conf文件在上面的修改基础上还需要修改以下配置：

   + replicaof 主服务器ip 6379

修改sentinel.conf

备份sentinel.conf文件

mv sentinel.conf sentinel.conf.bak

新建sentinel.conf文件

vi sentinel.conf

编辑主从服务器上的sentinel.conf文件

daemonize yes
port 26379
protected-mode no
sentinel monitor redis-master 主服务器ip 6379 1
sentinel down-after-milliseconds redis-master 30000
sentinel failover-timeout redis-master 180000
sentinel parallel-syncs redis-master 1
#若redis设置了密码则进行下面的设置
sentinel auth-pass redis-master ***

启动主从服务器

在主从服务器上分别执行：

./redis-server redis.conf
./redis-sentinel sentinel.conf

检查主服务器集群状态：

./redis-cli 
127.0.0.1:6379> info replication
# Replication
role:master
connected_slaves:1
slave0:ip=10.10.10.5,port=6379,state=online,offset=17460264,lag=1

检查从服务器集群状态：

./redis-cli 
127.0.0.1:6379> info replication
# Replication
role:slave
master_host:10.10.10.4
master_port:6379
master_link_status:up