在linux下安装redis，并配置redis后台启动
1 安装redis
1.2 下载安装包
首先从官网下载linux上的redis安装包
下载地址
1.3 安装gcc编译环境
由于redis是c语言开发的，需要依赖gcc编译环境
如何查看是否安装gcc
如果没有gcc，则需要在线安装.命令如下
1.4 安装linux
使用客户端工具上传安装包到linux
使用终端工具SecureCRT连接服务器
使用SecureFX传输文件
将安装包上传到/usr/local/src目录下
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## 进入安装包目录
cd `/usr/local/src`
## 解压安装包
tar zxvf redis-6.2.7
## 进入文件目录
cd redis-6.2.7
##安装 make是编译，make install是安装
make && make install
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此时会在/usr/local/bin下可以看到redis相关的执行文件，此时redis已经安装完成
2 启动redis
2.1 启动redis
由于redis-server已经加入环境变量了，所以任意目录下执行redis-server即可启动redis服务
下图所示已启动成功
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## 使用ps -ef | grep redis 查看redis是否启动
[root@VM-0-11-centos ~]# ps -ef | grep redis
root 2913007 1 0 13:20 ? 00:00:00 redis-server *:6379
root 2913363 2913292 0 13:22 pts/3 00:00:00 grep --color=auto redis
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但此时为前台启动，命令执行不会结束，会占用窗口
2.2 配置redis后台启动
通过修改配置文件参数，控制redis后台启动
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## 备份文件
[root@VM-0-11-centos redis-6.2.7]# cp /usr/local/src/redis-6.2.7/redis.conf redis.conf.bak
## 编辑文件
[root@VM-0-11-centos redis-6.2.7]# vi /usr/local/src/redis-6.2.7/redis.conf
## vi编辑器操作
## :i编辑
## esc后，:wq保存退出
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主要关注一下几个配置
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# By default Redis does not run as a daemon. Use 'yes' if you need it.
# Note that Redis will write a pid file in /var/run/redis.pid when daemonized.
# When Redis is supervised by upstart or systemd, this parameter has no impact.
## 后台启动
daemonize yes
#bind 127.0.0.1 -::1
## 启用ip连接
bind 0.0.0.0
# IMPORTANT NOTE: starting with Redis 6 "requirepass" is just a compatibility
# layer on top of the new ACL system. The option effect will be just setting
# the password for the default user. Clients will still authenticate using
# AUTH <password> as usually, or more explicitly with AUTH default <password>
# if they follow the new protocol: both will work.
#
# The requirepass is not compatable with aclfile option and the ACL LOAD
# command, these will cause requirepass to be ignored.
## 配置密码
requirepass 123456
## 记录日志文件
logfile "redis.log"
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配置完成后使用配置文件启动redis
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[root@VM-0-11-centos redis-6.2.7]# redis-server redis.conf
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2.3 配置redis开机自启动
2.3.1 创建redis服务文件
编写系统服务文件，redis加入到操作系统服务中，加入后就会开机自启动了
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## 创建服务文件
vi /etc/systemd/system/redis.service
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## redis服务文件
[Unit]
Description=redis-server
After=network.target
[Service]
Type=forking
## 启动命令
ExecStart=/usr/local/src/redis-server /usr/local/src/redis.conf
PrivateTmp=true
[Install]
WantedBy=multi-user.target
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2.3.2 通过系统服务启动redis
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## 重新加载系统服务
[root@VM-0-11-centos ~]# systemctl daemon-reload
## 通过系统服务启动redis服务
[root@VM-0-11-centos ~]# systemctl start redis
## 通过系统服务查看redis服务状态
[root@VM-0-11-centos ~]# systemctl status redis
● redis.service - redis-server
Loaded: loaded (/etc/systemd/system/redis.service; enabled; vendor preset: disabled)
Active: active (running) since Sat 2022-10-15 13:45:45 CST; 3s ago
Process: 2916668 ExecStart=/usr/local/bin/redis-server /usr/local/src/redis-6.2.7/redis.conf (code=exited, status=0/SUCCESS)
Main PID: 2916669 (redis-server)
Tasks: 5 (limit: 4988)
Memory: 10.0M
CGroup: /system.slice/redis.service
└─2916669 /usr/local/bin/redis-server 0.0.0.0:6379
Oct 15 13:45:45 VM-0-11-centos systemd[1]: Starting redis-server...
Oct 15 13:45:45 VM-0-11-centos systemd[1]: Started redis-server.
## 通过系统服务停止redis服务
[root@VM-0-11-centos ~]# systemctl stop redis
[root@VM-0-11-centos ~]# systemctl status redis
● redis.service - redis-server
Loaded: loaded (/etc/systemd/system/redis.service; enabled; vendor preset: disabled)
Active: inactive (dead) since Sat 2022-10-15 13:46:11 CST; 12s ago
Process: 2916668 ExecStart=/usr/local/bin/redis-server /usr/local/src/redis-6.2.7/redis.conf (code=exited, status=0/SUCCESS)
Main PID: 2916669 (code=exited, status=0/SUCCESS)
Oct 15 13:45:45 VM-0-11-centos systemd[1]: Starting redis-server...
Oct 15 13:45:45 VM-0-11-centos systemd[1]: Started redis-server.
Oct 15 13:46:11 VM-0-11-centos systemd[1]: Stopping redis-server...
Oct 15 13:46:11 VM-0-11-centos systemd[1]: redis.service: Succeeded.
Oct 15 13:46:11 VM-0-11-centos systemd[1]: Stopped redis-server.
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