常识
Supervisor（http://supervisord.org/）是用Python开发的一个client/server服务，是Linux/Unix系统下的一个进程管理工具，不支持Windows系统。它可以很方便的监听、启动、停止、重启一个或多个进程。用Supervisor管理的进程，当一个进程意外被杀死，supervisort监听到进程死后，会自动将它重新拉起，很方便的做到进程自动恢复的功能，不再需要自己写shell脚本来控制
lx
php-worker]# cat supervisord.conf
[supervisord]
logfile=/tmp/supervisord.log ; main log file; default $CWD/supervisord.log
logfile_maxbytes=50MB ; max main logfile bytes b4 rotation; default 50MB
logfile_backups=10 ; # of main logfile backups; 0 means none, default 10
loglevel=debug ; log level; default info; others: debug,warn,trace
pidfile=/tmp/supervisord.pid ; supervisord pidfile; default supervisord.pid22
nodaemon=true
user=www-data
[supervisorctl]
[inet_http_server]
port = *:9001
#username="yourusername"
#password="yourpass"
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
[include]
files = /var/www/api.sns.cai.com/supervisord.d/production1.*.conf /var/www/apistatistical.cai.com/supervise/production1.*.conf
#from laradock
tree supervisord.d/
supervisord.d/
├── laravel-worker.conf.example
└── monitor-mail.conf
以tomcat 举例
Tomcat进程的一个例子：
[program:tomcat]
command=/opt/apache-tomcat-8.0.35/bin/catalina.sh run
stdout_logfile=/opt/apache-tomcat-8.0.35/logs/catalina.out
autostart=true
autorestart=true
startsecs=5
priority=1
stopasgroup=true
killasgroup=true
bash终端
supervisorctl status
supervisorctl stop tomcat
supervisorctl start tomcat
supervisorctl restart tomcat
supervisorctl reread
supervisorctl update
开机启动Supervisor服务
7.1 配置systemctl服务
1> 进入/lib/systemd/system目录，并创建supervisor.service文件
[Unit]
Description=supervisor
After=network.target
[Service]
Type=forking
ExecStart=/usr/bin/supervisord -c /etc/supervisor/supervisord.conf
ExecStop=/usr/bin/supervisorctl $OPTIONS shutdown
ExecReload=/usr/bin/supervisorctl $OPTIONS reload
KillMode=process
Restart=on-failure
RestartSec=42s
[Install]
WantedBy=multi-user.target
2> 设置开机启动
systemctl enable supervisor.service
systemctl daemon-reload
3、修改文件权限为766
chmod 766 supervisor.service
see also
Supervisor安装与配置（Linux/Unix进程管理工具）
supervisor 安装、配置、常用命令
Supervisor的作用与配置
supervisord简介，配置及使用
Linux后台进程管理利器：supervisor
