CentOS 7编译安装Redis

安装编译相关依赖

• CentOS/Fedora yum install gcc gcc-c++ cmake tcl

下载Redis源码包

curl -o redis-4.0.10.tar.gz http://download.redis.io/releases/redis-4.0.10.tar.gz

解压Redis源码包

tar -xzvf redis-4.0.10.tar.gz

编译

具体过程:

1# 进入解压目录, 默认在当前目录
2cd redis-4.0.10
3
4# 执行make
5make
6
7# 安装, 指定目录
8make PREFIX=/usr/local/redis install

Redis配置

1# 将配置文件放在/usr/local/redis/etc/下面, 放在/etc/redis/下也可以
2mkdir /usr/local/redis/etc/
3
4# 将解压目录中的redis.conf拷贝到/usr/local/redis/etc/下面
5cp redis.conf /usr/local/redis/etc/
6
7# 进入redis的执行文件目录
8cd /usr/local/redis/bin/
9
10# 将redis-benchmark, redis-cli, redis-server复制到/usr/bin
11cp redis-benchmark redis-cli redis-server /usr/bin/

调整内存分配使用方式, 并使其生效:

1# 此参数可用的值为0,1,2 
2# 0.表示当用户空间请求更多的内存时，内核尝试估算出可用的内存 
3# 1.表示内核允许超量使用内存直到内存用完为止 
4# 2.表示整个内存地址空间不能超过swap+(vm.overcommit_ratio)%的RAM值 
5
6echo "vm.overcommit_memory=1" >> /etc/sysctl.conf
7sysctl -p

修改Redis配置和Redis加固

Redis配置

编辑配置文件vim /usr/local/redis/etc/redis.conf, 将其中的对应内容修改为:

1# redis以守护进程的方式运行, no表示不以守护进程的方式运行(会占用一个终端)
2daemonize yes
3
4# 密码
5requirepass password
6
7# 绑定ip
8# bind 127.0.0.1
9
10# 端口
11port 7480
12
13# 数据目录
14dir /data/redis
15
16# 客户端闲置多长时间后断开连接，默认为0关闭此功能
17timeout 300
18
19# 设置redis日志级别，默认级别：notice
20loglevel verbose
21
22# 设置日志文件的输出方式,如果以守护进程的方式运行redis 默认:""
23# 并且日志输出设置为stdout,那么日志信息就输出到/dev/null里面去了
24logfile stdout

Redis加固

• 绑定127.0.0.1 如果只是本地通信, 就确保监听在本地, 修改配置文件的bind 127.0.0.1

• 设置防火墙 如果需要其他机器访问，或者设置了slave模式，那就记得加上相应的防火墙设置，命令如下: iptables -A INPUT -s x.x.x.x -p tcp --dport 6379 -j ACCEPT

• 认证 添加密码, 修改配置文件requirepass asdlkashdkj123123

• 低权限账户 创建一个redis用户, 使用这个用户执行redis-server

  useradd -M -s /sbin/nologin redis setsid sudo -u redis /usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf'

Redis启动脚本

• CentOS 6的service服务

  cp /root/redis-4.0.10/utils/redis_init_script /etc/rc.d/init.d/redis

在文件的开头#!的下一行添加vim /etc/rc.d/init.d/redis:

1# chkconfig: 2345 90 10
2# description: Redis is a persistent key-value database

如果添加了密码, 请添加-a password在$CLIEXEC -a password -p $REDISPORT shutdown中.

再在stop的;;后添加:

1restart)
2    $0 stop
3    $0 start
4    ;;
5status)
6    PID=$(cat $PIDFILE)
7    if [ ! -x /proc/${PID} ]
8    then
9        echo 'Redis is not running'
10    else
11        echo "Redis is running ($PID)"
12    fi
13    ;;

例如:

1#!/bin/sh
2#
3# chkconfig: 2345 90 10
4# description: Redis is a persistent key-value database
5# Simple Redis init.d script conceived to work on Linux systems
6# as it does use of the /proc filesystem.
7
8### BEGIN INIT INFO
9# Provides:     redis_7480
10# Default-Start:        2 3 4 5
11# Default-Stop:         0 1 6
12# Short-Description:    Redis data structure server
13# Description:          Redis data structure server. See https://redis.io
14### END INIT INFO
15
16REDISPORT=7480
17EXEC=/usr/local/redis/bin/redis-server
18CLIEXEC=/usr/local/redis/bin/redis-cli
19
20PIDFILE=/var/run/redis_${REDISPORT}.pid
21CONF="/usr/local/redis/etc/redis.conf"
22
23case "$1" in
24    start)
25        if [ -f $PIDFILE ]
26        then
27                echo "$PIDFILE exists, Process is already running or crashed"
28        else
29                echo "Starting Redis server..."
30                $EXEC $CONF
31                printf "Redis \033[1;32;32mStarted...\033[0m\n"
32        fi
33        ;;
34    stop)
35        if [ ! -f $PIDFILE ]
36        then
37                echo "$PIDFILE does not exist, Process is not running"
38        else
39                PID=$(cat $PIDFILE)
40                echo "Stopping ..."
41                $CLIEXEC -a password -p $REDISPORT shutdown >> /dev/null 2>&1
42                while [ -x /proc/${PID} ]
43                do
44                    echo "Waiting for Redis to shutdown ..."
45                    sleep 1
46                done
47                printf "Redis \033[1;32;32mStopped...\033[0m\n"
48        fi
49        ;;
50    restart)
51        $0 stop
52        $0 start
53        ;;
54    status)
55        if [ ! -f $PIDFILE ]
56        then
57            echo "$PIDFILE does not exist, Process is not running"
58            exit 6379
59        fi
60        PID=$(cat $PIDFILE)
61        if [ ! -x /proc/${PID} ]
62        then
63            printf "Redis is \033[1;31;31mnot running\033[0m\n"
64        else
65            printf "Redis is \033[1;32;32mrunning\033[0m ($PID)\n"
66        fi
67        ;;
68    *)
69        echo "Please use start or stop as first argument"
70        ;;
71esac
72
73
74# 如果没报错的话，说明成功，可以用
75chkconfig --add redis
76
77# 启动redis服务器
78service redis start
79# 开机自启
80chkconfig redis on
81# 查看是否启动成功
82ps -ef | grep redis

• CentOS 7的systemd服务

在/usr/lib/systemd/system目录下创建redis.service文件, 权限为root.root 755, 输入以下内容, 将ExecStart后面的执行路径修改为自己的路径:

1[Unit]
2Description=Redis persistent key-value database
3After=network.target
4
5[Service]
6ExecStart=/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf --daemonize yes
7ExecStop=/usr/local/redis/bin/redis-cli -a password -p 6379 shutdown
8User=redis
9Group=redis
10RuntimeDirectory=redis
11RuntimeDirectoryMode=0755
12
13[Install]
14WantedBy=multi-user.target

然后创建/usr/libexec/redis-shutdown文件, 输入以下内容, 记得将REDIS_CLI和CONFIG_FILE修改为自己的路径:

1#!/bin/bash
2#
3# Wrapper to close properly redis and sentinel
4test x"$REDIS_DEBUG" != x && set -x
5
6REDIS_CLI=/usr/local/redis/bin/redis-cli
7
8# Retrieve service name
9SERVICE_NAME="$1"
10if [ -z "$SERVICE_NAME" ]; then
11   SERVICE_NAME=redis
12fi
13
14# Get the proper config file based on service name
15CONFIG_FILE="/usr/local/redis/etc/$SERVICE_NAME.conf"
16
17# Use awk to retrieve host, port from config file
18HOST=`awk '/^[[:blank:]]*bind/ { print $2 }' $CONFIG_FILE | tail -n1`
19PORT=`awk '/^[[:blank:]]*port/ { print $2 }' $CONFIG_FILE | tail -n1`
20PASS=`awk '/^[[:blank:]]*requirepass/ { print $2 }' $CONFIG_FILE | tail -n1`
21SOCK=`awk '/^[[:blank:]]*unixsocket\s/ { print $2 }' $CONFIG_FILE | tail -n1`
22
23# Just in case, use default host, port
24HOST=${HOST:-127.0.0.1}
25if [ "$SERVICE_NAME" = redis ]; then
26    PORT=${PORT:-6379}
27else
28    PORT=${PORT:-26739}
29fi
30
31# Setup additional parameters
32# e.g password-protected redis instances
33[ -z "$PASS"  ] || ADDITIONAL_PARAMS="-a $PASS"
34
35# shutdown the service properly
36if [ -e "$SOCK" ] ; then
37    $REDIS_CLI -s $SOCK $ADDITIONAL_PARAMS shutdown
38else
39    $REDIS_CLI -h $HOST -p $PORT $ADDITIONAL_PARAMS shutdown
40fi

修改/usr/libexec/redis-shutdown权限, chmod 755 /usr/libexec/redis-shutdown

重新载入systemd, 扫描新的或有变动的service, systemctl daemon-reload

开机自启, systemctl enable redis