1. Install and configure Redis (this article takes the installation of Redis 7 under CentOS 7 as an example)

1.1 Execute the command su to switch the root account (the password will not be displayed when entering the password, but it has actually been entered)

su

1.2 Execute the command wget+download link to download the compressed package

Redis version warehouse[click to jump]

#下载redis压缩包
wget https://download.redis.io/releases/redis-7.0.0.tar.gz

#如果wget命令无效，先执行下面这个命令安装wget
yum -y install wget

Copy the download link in the version warehouse

1.3 Execute the command tar -zxvf to decompress the redis compressed package to the specified directory

Generally placed under /usr/local, you can adjust it yourself

#将下载好的redis压缩包解压到指定目录/usr/local下
tar -zxvf redis-7.0.0.tar.gz -C /usr/local

1.4 Execute commands to install C language dependencies

Since Redis is written in C language, dependencies must be installed

#安装C语言依赖
yum install gcc-c++

1.5 Execute the command cd to switch to the /usr/local directory and view all files in this directory

#切换到指定目录/usr/local下
cd /usr/local
#查询当前目录下全部文件
ll

View the directory name after redis decompression

1.6 Execute the command to switch to the Redis-xxx directory, and then execute make to compile

#切换到解压完成的redis-xxx目录
cd redis-7.0.0
#编译
make

1.7 After compiling, switch to the src directory under the Redis-xxx directory and execute the command ./redis-server to start the Redis service

#切换到redis-xxx目录下的src目录中(默认安装在redis-xxx下的src目录)
cd src
#启动redis服务
./redis-server

1.8 Close the window or Ctrl+C to exit Redis, and the Redis service is closed while exiting

The default startup method of Redis is to run in the foreground . This startup method will block the entire session window and the Redis service will also stop once you exit or close the window. If you change it to run in the background, you need to modify the configuration file

1.8.1 Return to the Redis-xxx directory and find the Redis configuration file

#返回上一级目录
cd ..
#查询当前目录下全部文件
ll

1.9 Edit Redis configuration file

1.9.1 Open the redis.conf configuration file

Press the INSERT key to edit, press the ESC key to exit the edit, and after exiting the edit, enter : wq! to save the modification and exit

#打开redis配置文件
vi redis.conf

1.9.2 daemonize

The default is daemonize no, that is, it runs in the foreground, and it can be changed to daemonize yes to run in the background

1.9.3 port number port

The default is 6379

1.9.4 IP binding bind

Introduction to Redis bind[click to jump] Set the IP address to a static IP address[click to jump]

Before configuring bind , set the local IP address to a static IP address , otherwise the Redis configuration file must be re-modified every time you restart

1.9.5 protection mode protect-mode ( not recommended to modify )

The default is protect-mode yes, that is, the protection mode is turned on (only the local connection is allowed in the protection mode), and the external connection is allowed by changing it to protect-mode no (it is not safe, it is recommended to set a password and then access it through the password)

1.9.6 Redis password requirepass

By default, this parameter does not exist, you need to add it yourself, requirepass and add a password , if you don’t add this parameter, you don’t need a password to access by default ( if you set a password, you can perform external access when the protection mode is turned on )

1.10 Close the Redis service

1.10.1 Execute the command cd src to switch to the src directory under the Redis-xxx directory and execute the command to start the Redis service with the modified configuration file

#以指定的redis-xxx下的redis配置文件启动redis服务
./redis-server /usr/local/redis-7.0.0/redis.conf
#查看redis相关进程
ps -ef|grep redis

1.10.2 If no password is set , directly execute the command ./redis-cli shutdown to close the Redis service

#关闭redis
./redis-cli shutdown

1.10.3 If the password has been set , first execute the command ./redis-cli to enter the Redis command line interface, then enter the auth password to log in to Redis, and finally enter shutdown to close the Redis service and enter exit/quit to exit the Redis command line interface

2. Redis starts automatically at boot

2.1 Create and edit the redis.service file

#在/etc/systemd/system路径下创建redis.service文件
vi /etc/systemd/system/redis.service

2.2 redis.service file content ( remember to change the path in ExecStart to your own)