How to add boot script in linux?

coldplay.xixi
Release: 2020-06-13 13:04:44
Original
7693 people have browsed it

How to add boot script in linux?

#How to add a boot script in Linux?

How to add a startup script in Linux:

Configuration files that need to be loaded when the system starts

/etc/profile,/root /.bash_profile
/etc/bashrc、/root/.bashrc
/etc/profile.d/*.sh、/etc/profile.d/lang.sh
/etc/sysconfig/i18n、 /etc/rc.local (/etc/rc.d/rc.local)

1. Modify the boot file: /etc/rc.local (or /etc/rc.d/rc .local)

# 1.编辑rc.local文件
[root@localhost ~]# vi /etc/rc.local
 
# 2.修改rc.local文件,在 exit 0 前面加入以下命令。保存并退出。
/etc/init.d/mysqld start                     # mysql开机启动
/etc/init.d/nginx start                     # nginx开机启动
supervisord -c /etc/supervisor/supervisord.conf         # supervisord开机启动
/bin/bash /server/scripts/test.sh >/dev/null 2>/dev/null
 
# 3.最后修改rc.local文件的执行权限
[root@localhost ~]# chmod +x /etc/rc.local
[root@localhost ~]# chmod 755 /etc/rc.local
Copy after login

2. Write a shell script yourself

Place the written script (.sh file) in the directory /etc/profile. d/, all shell scripts in this directory will be automatically executed after the system starts.

3. Set through the chkconfig command

# 1.将(脚本)启动文件移动到 /etc/init.d/或者/etc/rc.d/init.d/目录下。(前者是后者的软连接)
mv /www/wwwroot/test.sh /etc/rc.d/init.d
 
# 2.启动文件前面务必添加如下三行代码,否侧会提示chkconfig不支持。
#!/bin/sh             告诉系统使用的shell,所以的shell脚本都是这样
#chkconfig: 35 20 80        分别代表运行级别,启动优先权,关闭优先权,此行代码必须
#description: http server     自己随便发挥!!!,此行代码必须
/bin/echo $(/bin/date +%F_%T) >> /tmp/test.log
 
# 3.增加脚本的可执行权限
chmod +x /etc/rc.d/init.d/test.sh
 
# 4.添加脚本到开机自动启动项目中。添加到chkconfig,开机自启动。
[root@localhost ~]# cd /etc/rc.d/init.d
[root@localhost ~]# chkconfig --add test.sh
[root@localhost ~]# chkconfig test.sh on
 
# 5.关闭开机启动
[root@localhost ~]# chkconfig test.sh off
 
# 6.从chkconfig管理中删除test.sh
[root@localhost ~]# chkconfig --del test.sh
 
# 7.查看chkconfig管理
[root@localhost ~]# chkconfig --list test.sh
Copy after login

4. Customize the service file, add it to the system service, and manage it through Systemctl

1. Write service files: such as nginx.service, redis.service, supervisord.service

[Unit]:服务的说明
Description:描述服务
After:描述服务类别
 
[Service]服务运行参数的设置
Type=forking      是后台运行的形式
ExecStart        为服务的具体运行命令
ExecReload       为服务的重启命令
ExecStop        为服务的停止命令
PrivateTmp=True     表示给服务分配独立的临时空间
注意:启动、重启、停止命令全部要求使用绝对路径
 
[Install]        服务安装的相关设置,可设置为多用户
WantedBy=multi-user.target
Copy after login

2. Save the file in the directory: with 754 permissions. Directory path: /usr/lib/systemd/system. For example, the supervisord.service file above is placed in this directory.

[root@localhost ~]# cat /usr/lib/systemd/system/nginx.service
[root@localhost ~]# cat /usr/lib/systemd/system/supervisord.service
Copy after login

3. Set up auto-start at boot (execute in any directory). If an error is reported when executing the startup command, execute: systemctl daemon-reload

设置开机自启动
[root@localhost ~]# systemctl enable nginx.service   
[root@localhost ~]# systemctl enable supervisord
 
停止开机自启动
[root@localhost ~]# systemctl disable nginx.service
[root@localhost ~]# systemctl disable supervisord
 
验证一下是否为开机启动
[root@localhost ~]# systemctl is-enabled nginx
[root@localhost ~]# systemctl is-enabled supervisord
Copy after login

4. Other commands

启动nginx服务
[root@localhost ~]# systemctl start nginx.service
 
停止nginx服务
[root@localhost ~]# systemctl start nginx.service
 
重启nginx服务
[root@localhost ~]# systemctl restart nginx.service
 
查看nginx服务当前状态
[root@localhost ~]# systemctl status nginx.service
 
查看所有已启动的服务
[root@localhost ~]# systemctl list-units --type=service
Copy after login

5. Service file example:

# supervisord.service进程管理服务文件
[Unit]
Description=Process Monitoring and Control Daemon  # 内容自己定义:Description=Supervisor daemon
After=rc-local.service nss-user-lookup.target
 
[Service]
Type=forking
ExecStart=/usr/bin/supervisord -c /etc/supervisor/supervisord.conf
ExecStop= /usr/bin/supervisorctl shutdown
ExecReload=/usr/bin/supervisorctl reload
Restart=on-failure
RestartSec=42s
KillMode=process
 
[Install]
WantedBy=multi-user.target
Copy after login
# nginx.service服务文件
[Unit]
Description=nginx - high performance web server
After=network.target remote-fs.target nss-lookup.target
 
[Service]
Type=forking
ExecStart=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
ExecReload=/usr/local/nginx/sbin/nginx -s reload
ExecStop=/usr/local/nginx/sbin/nginx -s stop
 
[Install]
WantedBy=multi-user.target
Copy after login
# redis.service服务文件
[Unit]
Description=Redis
After=network.target remote-fs.target nss-lookup.target
 
[Service]
Type=forking
ExecStart=/usr/local/bin/redis-server /etc/redis.conf
ExecStop=kill -INT `cat /tmp/redis.pid`
User=www
Group=www
 
[Install]
WantedBy=multi-user.target
Copy after login

Recommended tutorial: "linux video tutorial

The above is the detailed content of How to add boot script in linux?. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact [email protected]
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!