Redis & Sentinel 安装脚本

#!/bin/bash

# 判断是否为root用户，不是root用户提示退出

if [[ $EUID -ne 0 ]]; then
   echo "This script. must be run as root" 1>&2
   exit 1
fi

# 安装必要的组件

yum install -y gcc

# 下载redis源代码

cd /tmp

wget -P /tmp http://download.redis.io/releases/redis-3.2.1.tar.gz

# 对比文件下载是否正确

echo 26c0fc282369121b4e278523fce122910b65fbbf  redis-3.2.1.tar.gz > /tmp/download.txt

sha1sum -c download.txt

if [ $? -ne 0 ]
then
  echo "The Download File is not Correct, Please Download it again."

  exit 0
fi

# 编译安装

tar xf redis-3.2.1.tar.gz

cd redis-3.2.1

make

make install

# 创建组和用户

groupadd redis

useradd -g redis redis

# LOG文件存放位置

mkdir /var/log/redis

chown redis:redis /var/log/redis

# 当前IP地址

IP=`ifconfig eth0 | grep "inet " | awk '{ print $2}'`

# Redis服务开机运行

echo "[Unit]" > /usr/lib/systemd/system/redis.service 
echo "Description=Redis persistent key-value database" >> /usr/lib/systemd/system/redis.service 
echo "After=network.target" >> /usr/lib/systemd/system/redis.service 
echo "[Service]" >> /usr/lib/systemd/system/redis.service  
echo "Type=forking" >> /usr/lib/systemd/system/redis.service  
echo "ExecStart=/usr/local/bin/redis-server /etc/redis/redis.conf" >> /usr/lib/systemd/system/redis.service  

echo "ExecStop=/usr/local/bin/redis-cli -h ${IP} shutdown" >> /usr/lib/systemd/system/redis.service  

echo "User=redis" >> /usr/lib/systemd/system/redis.service  
echo "Group=redis" >> /usr/lib/systemd/system/redis.service  
echo "[Install]" >> /usr/lib/systemd/system/redis.service  

echo "WantedBy=multi-user.target" >> /usr/lib/systemd/system/redis.service

# Redis Sentinel 服务开机运行

echo "[Unit]" > /usr/lib/systemd/system/redis-sentinel.service 

echo "Description=Redis Sentinel" >> /usr/lib/systemd/system/redis-sentinel.service 

echo "After=network.target" >> /usr/lib/systemd/system/redis-sentinel.service 

echo "[Service]" >> /usr/lib/systemd/system/redis-sentinel.service  

echo "Type=forking" >> /usr/lib/systemd/system/redis-sentinel.service  

echo "ExecStart=/usr/local/bin/redis-sentinel /etc/redis/sentinel.conf" >> /usr/lib/systemd/system/redis-sentinel.service  

echo "ExecStop=/usr/local/bin/redis-cli -h ${IP} -p 26379 shutdown" >> /usr/lib/systemd/system/redis-sentinel.service  

echo "User=redis" >> /usr/lib/systemd/system/redis-sentinel.service  

echo "Group=redis" >> /usr/lib/systemd/system/redis-sentinel.service  

echo "[Install]" >> /usr/lib/systemd/system/redis-sentinel.service  

echo "WantedBy=multi-user.target" >> /usr/lib/systemd/system/redis-sentinel.service

# redis 服务限制

mkdir /etc/systemd/system/redis.service.d/

echo "[Service]" > /etc/systemd/system/redis.service.d/limits.conf 

echo "LimitNOFILE=65535" >> /etc/systemd/system/redis.service.d/limits.conf

# 启用开机自动运行

systemctl enable redis.service

systemctl enable redis-sentinel.service

# 禁用selinux

sed -i 's/SELINUX=enforcing/SELINUX=disable/' /etc/selinux/config

# 系统优化

echo "net.core.somaxconn=4096" >> /etc/sysctl.conf

echo "echo never > /sys/kernel/mm/transparent_hugepage/enabled" >> /etc/rc.local

chmod +x /etc/rc.local

echo "vm.overcommit_memory=1" >> /etc/sysctl.conf

echo "*  soft  nofile  65535" >> /etc/security/limits.conf

echo " *  hard  nofile  65535" >> /etc/security/limits.conf

echo " *  soft  nproc  65535" >> /etc/security/limits.conf

echo " *  hard  nproc  65535" >> /etc/security/limits.conf

echo "net.ipv4.tcp_tw_recycle=1" >> /etc/sysctl.conf

# 别名

echo "alias redis='redis-cli -h ${IP}'" >> /etc/profile

echo "alias sentinel='redis-cli -h ${IP} -p 26379'" >> /etc/profile

# 修改时区

/bin/cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

#Redis配置文件存放位置

mkdir /etc/redis

# 修改配置文件redis.conf

echo "bind ${IP}" > /etc/redis/redis.conf

echo "protected-mode no" >> /etc/redis/redis.conf

echo "tcp-backlog 4096" >> /etc/redis/redis.conf

echo "timeout 300" >> /etc/redis/redis.conf

echo "tcp-keepalive 60" >> /etc/redis/redis.conf

echo "daemonize yes" >> /etc/redis/redis.conf

echo "supervised systemd" >> /etc/redis/redis.conf

echo "logfile /var/log/redis/redis.log" >> /etc/redis/redis.conf

echo "dir /var/log/redis" >> /etc/redis/redis.conf

echo "maxclients 10000" >> /etc/redis/redis.conf

echo "maxmemory 4G" >> /etc/redis/redis.conf

echo "maxmemory-policy volatile-lru" >> /etc/redis/redis.conf

echo "appendonly no" >> /etc/redis/redis.conf

echo "slowlog-max-len 512" >> /etc/redis/redis.conf

echo "client-output-buffer-limit slave 512mb 256mb 300" >> /etc/redis/redis.conf

# 修改配置文件sentinel.conf

echo "port 26379" > /etc/redis/sentinel.conf

echo "bind ${IP}" >> /etc/redis/sentinel.conf

echo "dir /var/log/redis" >> /etc/redis/sentinel.conf

echo "sentinel monitor mymaster ${IP} 6379 2" >> /etc/redis/sentinel.conf

echo "maxclients 10" >> /etc/redis/sentinel.conf

echo "logfile /var/log/redis/sentinel.log" >> /etc/redis/sentinel.conf

echo "daemonize yes" >> /etc/redis/sentinel.conf

echo "sentinel down-after-milliseconds mymaster 5000" >> /etc/redis/sentinel.conf

echo "sentinel failover-timeout mymaster 60000" >> /etc/redis/sentinel.conf