centos7开启22端口，centos7安装redis

#1.安装gcc依赖
yum install gcc -y

#2.下载、解压并进入到目录
wget http://download.redis.io/releases/redis-5.0.4.tar.gz
tar -xzvf redis-5.0.4.tar.gz

#3.编译到指定目录
make
make install PREFIX=/usr/local/redis

#4.创建 /usr/local/redis/etc 目录，将解压出来的redis.conf 复制过来
mkdir -p /usr/local/redis/etc
cp redis.conf  /usr/local/redis/etc/

#5.编辑配置文件
cd /usr/local/redis/etc/
vim redis.conf
#把daemonize no 改为 daemonize yes
#把requirepass foobared 改为 requirepass skywell@2019
#把port 6379 改为 port 16379

centos7开启22端口。
#6.添加系统服务
vim /usr/lib/systemd/system/redis-server.service
#输入以下内容：

[Unit]
Description=redis
After=network.target
 
[Service]
Type=forking
PIDFile=/var/run/redis_6379.pid
ExecStart=/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true
 
[Install]
WantedBy=multi-user.target

#保存后执行以下命令
systemctl daemon-reload
systemctl enable redis-server
systemctl start redis-server.service

#7.添加环境变量
vim /etc/profile
#加入以下内容
export PATH=$PATH:/usr/local/redis/bin
#刷新文件
source /etc/profile

#8.设置开机自启动
vim /etc/init.d/redis
#输入以下内容：

# chkconfig: 2345 80 90
#redis服务必须在运行级2，3，4，5下被启动或关闭，启动的优先级是90，关闭的优先级是10。
# description: Start and Stop redis  
 
PATH=/usr/local/bin:/sbin:/usr/bin:/bin
export PATH
REDISPORT=16379 #端口号，这是默认的，如果你安装的时候不是默认端口号，则需要修改
EXEC=/usr/local/redis/bin/redis-server #redis-server启动脚本的位置，你如果忘了可以用find或whereis找到  
REDIS_CLI=/usr/local/redis/bin/redis-cli #redis-cli客户端启动脚本的位置，你如果忘了可以用find或whereis找到  
PIDFILE=/var/run/redis_6379.pid  #这个会在redis启动时在/var/run/目录下生成，也可以用find或whereis找到
CONF="/usr/local/redis/etc/redis.conf" #redis.conf配置文件的位置，你如果忘了可以用find或whereis找到
AUTH="skywell@2019"#登录密码
 
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 -a $AUTH -p $REDISPORT 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

centos jdk安装，#保存后执行以下命令
chmod +x /etc/init.d/redis
chkconfig redis on

#9.尝试启动或停止redis
service redis start
service redis stop