CentOS 7 配置 Supervisor

in #cn6 years ago

Supervisor 的文档地址:http://www.supervisord.org/

1. 安装 Supervisor

yum install supervisor

安装完成,如下图:

QQ截图20180821162222.png

2. 配置 Supervisor

Supervisor 的配置文件为:/etc/supervisord.conf ,Supervisor 所管理的应用的配置文件放在 /etc/supervisord.d/ 目录中,这个目录可以在 supervisord.conf 中配置。

QQ截图20180821233818.png

启动 Supervisor
supervisord -c /etc/supervisor.conf

通过这种方式启动,服务器重启后 Supervisor 不会自动启动,不建议使用这种方式启动Supervisor。

安装 Supervisor 后,在 /usr/lib/systemd/system/ 目录中会有一个 supervisord.service 文件,内容如下:

QQ截图20180822000509.png

如果没有,在该目录中创建一个,用下面的内容替换:

# supervisord service for sysstemd (CentOS 7.0+)
# by ET-CS (https://github.com/ET-CS)
[Unit]
Description=Supervisor daemon

[Service]
Type=forking
ExecStart=/usr/bin/supervisord
ExecStop=/usr/bin/supervisorctl $OPTIONS shutdown
ExecReload=/usr/bin/supervisorctl $OPTIONS reload
KillMode=process
Restart=on-failure
RestartSec=42s

[Install]
WantedBy=multi-user.target
启用开机启动
systemctl enable supervisord.service
启动Supervisor
systemctl start supervisord.service
查看Supervisor状态
systemctl status supervisord.service

QQ截图20180822001155.png

3. 应用配置

Supervisor 管理应用的进程,需要对每个应用进行配置。在 /etc/supervisor.d 中创建 helloworld.ini,每个应用对应一个配置文件即可。

下面是配置文件的示例:

[program:helloworld]  ;程序的名称
command = dotnet HelloWorld.dll ;执行的命令
directory = /root/www/ ;命令执行的目录
environment = ASPNETCORE__ENVIRONMENT=Production  ;环境变量
user = root  ;执行进程的用户
stopsignal = INT  
autostart = true  ;是否自动启动
autorestart = true  ;是否自动重启
startsecs = 1  ;自动重启间隔
stderr_logfile = /var/log/helloworld.err.log  ;标准错误日志
stdout_logfile = /var/log/helloworld.out.log  ;标准输出日志

创建好配置文件后,重启 Supervisor

supervisorctl reload

为确保没有错误,可以正常启动,使用前文提到的查看Supervisor状态的命令查看。或者查看要管理的进程是否启动,本例中可以使用下面的命令:

ps -ef | grep HelloWorld.dll

或
ps -ef | grep dotnet

4. Supervisor 管理进程

有两种方式可以管理进程,命令行和UI界面。

命令行
supervisorctl shutdown #关闭所有任务

supervisorctl stop|start program_name

supervisorctl status #查看所有任务状态
UI界面

启用 UI 管理,首先将 /etc/supervisord.conf 配置文件中的 inet_http_server 节点取消注释。

QQ截图20180822151437.png

修改后重启 Supervisor

supervisorctl reload

在浏览器中打开地址,如下图所示。

QQ截图20180822150704.png

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