初学乍练redis：主从复制及哨兵维护脚本
2018-08-24 10:37
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版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/wzy0623/article/details/82013226
目录
环境：
[code]103.244.233.166（master、sentinel） 103.244.233.167（slave、sentinel） 103.244.233.168（slave、sentinel）
用脚本维护多个一主两从的redis复制环境，master name名称依次为redis1、redis2...，使用端口依次为20001、20002...，哨兵使用端口为30001，一组哨兵监控多套redis主从环境。
一、创建redis主从复制集群脚本
master的create_redis_cluster.sh文件内容如下：
[code]#!/bin/bash
maxdir=`ls -l /data1 | grep "redisdata" | awk '{print $9}' | sort -k1.10n | tail -n1`
maxnum=`expr ${maxdir:9} + 1`
datadir='/data1/redisdata'${maxnum}
clustername='redis'${maxnum}
redis_port=$((20000+maxnum))
mkdir ${datadir}
cp /home/redis/redis.conf.templet ${datadir}/redis.conf
sed -i "s/20001/$redis_port/g" ${datadir}/redis.conf
sed -i "s/redisdata1/redisdata$maxnum/g" ${datadir}/redis.conf
chown -R redis:redis ${datadir}
chmod 775 ${datadir}
chmod 664 ${datadir}/*
# 添加哨兵监控
cat /dev/null > /home/redis/tmp_sentinel_monitor
echo "sentinel monitor ${clustername} 103.244.233.166 ${redis_port} 2" >> /home/redis/tmp_sentinel_monitor
echo "sentinel set ${clustername} auth-pass 123456" >> /home/redis/tmp_sentinel_monitor
echo "sentinel set ${clustername} down-after-milliseconds 5000" >> /home/redis/tmp_sentinel_monitor
echo "sentinel set ${clustername} failover-timeout 10000" >> /home/redis/tmp_sentinel_monitor
scp /home/redis/tmp_sentinel_monitor 103.244.233.167:/home/redis/
scp /home/redis/tmp_sentinel_monitor 103.244.233.168:/home/redis/
/root/sentinel_monitor.sh
ssh root@103.244.233.167 /root/sentinel_monitor.sh
ssh root@103.244.233.168 /root/sentinel_monitor.sh
# 启动redis实例
sudo -u redis /home/redis/redis-5.0.3/src/redis-server ${datadir}/redis.conf
ssh root@103.244.233.167 /root/create_redis_cluster.sh
ssh root@103.244.233.168 /root/create_redis_cluster.sh
info="集群名称：${clustername} |哨兵：103.244.233.166 30001, 103.244.233.167 30001, 103.244.233.168 30001 |口令：123456"
echo ${info} | sed 's/|/\n /g'
slave的create_redis_cluster.sh文件：
[code]#!/bin/bash
maxdir=`ls -l /data1 | grep "redisdata" | awk '{print $9}' | sort -k1.10n | tail -n1`
maxnum=`expr ${maxdir:9} + 1`
datadir='/data1/redisdata'${maxnum}
clustername='redis'${maxnum}
redis_port=$((20000+maxnum))
export clustername redis_port
mkdir ${datadir}
cp /home/redis/redis.conf.templet ${datadir}/redis.conf
sed -i "s/20001/$redis_port/g" ${datadir}/redis.conf
sed -i "s/redisdata1/redisdata$maxnum/g" ${datadir}/redis.conf
chown -R redis:redis ${datadir}
chmod 775 ${datadir}
chmod 664 ${datadir}/*
sudo -u redis /home/redis/redis-5.0.3/src/redis-server ${datadir}/redis.conf
master的redis.conf.templet模板文件如下：
[code]rename-command flushAll "" daemonize yes port 20001 dir "/home/redis/redisdata1" pidfile "/home/redis/redisdata1/redis.pid" logfile "/home/redis/redisdata1/redis.log" dbfilename "dump.rdb" save 900 1 appendonly no appendfilename "appendonly.aof" appendfsync always maxmemory 8gb maxmemory-policy volatile-lru maxmemory-samples 3 slowlog-log-slower-than 10000 repl-backlog-size 64mb timeout 0 repl-timeout 240 requirepass "123456" masterauth "123456" protected-mode no client-output-buffer-limit normal 0 0 0 client-output-buffer-limit slave 2gb 1gb 300
slave的redis.conf.templet模板文件比master的只是在最后增加如下一行：
[code]slaveof 103.244.233.166 20001
sentinel_monitor.sh文件内容如下：
[code]#!/bin/bash cat /home/redis/tmp_sentinel_monitor | sudo -u redis /home/redis/redis-3.2.3/src/redis-cli -p 30001 -a 123456
sentinel.conf文件内容如下：
[code]port 30001 protected-mode no dir "/home/redis/sentinel"
二、删除redis主从复制集群脚本
master的remove_redis_cluster.sh文件内容如下：
[code]#!/bin/bash
if [ ! -n "$1" ] ;then
echo "请输入集群编号！"
exit
fi
maxnum=$1
datadir='/home/redis/redisdata'${maxnum}
redis_port=$((20000+maxnum))
clustername='redis'${maxnum}
# 根据端口号查询对应的pid
pid=$(netstat -nlp | grep $redis_port | awk '{print $7}' | awk -F"/" '{ print $1 }' | uniq);
# 杀掉对应的进程，如果pid不存在，则不执行
if [ -n "$pid" ]; then
kill -9 $pid
fi
sudo -u redis /home/redis/redis-3.2.3/src/redis-cli -p 30001 -a 123456 sentinel remove ${clustername}
rm -rf $datadir
ssh root@103.244.233.167 /root/remove_redis_cluster.sh $1
ssh root@103.244.233.168 /root/remove_redis_cluster.sh $1
slave的remove_redis_cluster.sh文件比master的只是去掉了如下所示的最后部分：
[code]ssh root@103.244.233.167 /root/remove_redis_cluster.sh $1 ssh root@103.244.233.168 /root/remove_redis_cluster.sh $1
三、启动redis主从复制集群脚本
master的start_redis_cluster.sh文件内容如下：
[code]#!/bin/bash
if [ ! -n "$1" ] ;then
echo "请输入集群编号！"
exit
fi
maxnum=$1
datadir='/home/redis/redisdata'${maxnum}
clustername='redis'${maxnum}
redis_port=$((20000+maxnum))
cat /dev/null > /home/redis/tmp_sentinel_monitor
echo "sentinel monitor ${clustername} 103.244.233.166 ${redis_port} 2" >> /home/redis/tmp_sentinel_monitor
echo "sentinel set ${clustername} auth-pass 123456" >> /home/redis/tmp_sentinel_monitor
echo "sentinel set ${clustername} down-after-milliseconds 5000" >> /home/redis/tmp_sentinel_monitor
echo "sentinel set ${clustername} failover-timeout 10000" >> /home/redis/tmp_sentinel_monitor
sudo -u redis /home/redis/redis-3.2.3/src/redis-server ${datadir}/redis.conf
cat /home/redis/tmp_sentinel_monitor | sudo -u redis /home/redis/redis-3.2.3/src/redis-cli -p 30001 -a 123456
ssh root@103.244.233.167 /root/start_redis_cluster.sh $1
ssh root@103.244.233.168 /root/start_redis_cluster.sh $1
slave的start_redis_cluster.sh文件比master的只是去掉了如下所示的最后部分：
[code]ssh root@103.244.233.167 /root/start_redis_cluster.sh $1 ssh root@103.244.233.168 /root/start_redis_cluster.sh $1
四、停止redis主从复制集群脚本
master上的shutdown_redis_cluster.sh文件内容如下：
[code]#!/bin/bash
if [ ! -n "$1" ] ;then
echo "请输入集群编号！"
exit
fi
maxnum=$1
redis_port=$((20000+maxnum))
clustername='redis'${maxnum}
sudo -u redis /home/redis/redis-3.2.3/src/redis-cli -p ${redis_port} -a 123456 shutdown
sudo -u redis /home/redis/redis-3.2.3/src/redis-cli -p 30001 -a 123456 sentinel remove ${clustername}
ssh root@103.244.233.167 /root/shutdown_redis_cluster.sh $1
ssh root@103.244.233.168 /root/shutdown_redis_cluster.sh $1
slave的shutdown_redis_cluster.sh文件比master的只是去掉了如下所示的最后部分：
[code]ssh root@103.244.233.167 /root/shutdown_redis_cluster.sh $1 ssh root@103.244.233.168 /root/shutdown_redis_cluster.sh $1
五、重启哨兵脚本
master的restart_sentinel.sh文件内容如下：
[code]#!/bin/bash sudo -u redis /home/redis/redis-3.2.3/src/redis-cli -p 30001 -a 123456 shutdown sudo -u redis /home/redis/redis-3.2.3/src/redis-sentinel /home/redis/sentinel/sentinel.conf > /home/redis/sentinel/sentinel.log 2>&1 & ssh root@103.244.233.167 /root/restart_sentinel.sh ssh root@103.244.233.168 /root/restart_sentinel.sh
slave的restart_sentinel.sh文件比master的只是去掉了如下所示的最后部分：
[code]ssh root@103.244.233.167 /root/restart_sentinel.sh ssh root@103.244.233.168 /root/restart_sentinel.sh
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