centos怎样设置service 启动服务

2025-04-04 04:08:48
推荐回答(1个)
回答1:

Centos 系统服务脚本目录:
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/usr/lib/systemd/
有系统(system)和用户(user)之分,
如需要开机没有登陆情况下就能运行的程序,存在系统服务(system)里,即:
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/lib/systemd/system/
反之,用户登录后才能运行的程序,存在用户(user)里
服务以.service结尾。
这边以nginx开机运行为例
1.建立服务文件
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vim /lib/systemd/system/nginx.service
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[Unit]
Description=nginx
After=network.target

[Service]
Type=forking
ExecStart=/www/lanmps/init.d/nginx start
ExecReload=/www/lanmps/init.d/nginx restart
ExecStop=/www/lanmps/init.d/nginx stop
PrivateTmp=true

[Install]
WantedBy=multi-user.target

[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为重启命令
ExecStop为停止命令
PrivateTmp=True表示给服务分配独立的临时空间
注意:[Service]的启动、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
2.保存目录
以754的权限保存在目录:
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/lib/systemd/system
3.设置开机自启动

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systemctl enable nginx.service

4.其他命令

任务 旧指令 新指令
使某服务自动启动 chkconfig --level 3 httpd on systemctl enable httpd.service
使某服务不自动启动 chkconfig --level 3 httpd off systemctl disable httpd.service
检查服务状态 service httpd status systemctl status httpd.service (服务详细信息)
systemctl is-active httpd.service (仅显示是否 Active)
显示所有已启动的服务 chkconfig --list systemctl list-units --type=service
启动某服务 service httpd start systemctl start httpd.service
停止某服务 service httpd stop systemctl stop httpd.service
重启某服务 service httpd restart systemctl restart httpd.service

启动nginx服务
systemctl start nginx.service

设置开机自启动
systemctl enable nginx.service

停止开机自启动
systemctl disable nginx.service

查看服务当前状态
systemctl status nginx.service

重新启动服务
systemctl restart nginx.service

查看所有已启动的服务
systemctl list-units --type=service

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