备忘录

# Fork mode
$ pm2 start app.js --name my-api # Name process

# Cluster mode
$ pm2 start app.js -i 0        # Will start maximum processes with LB depending on available CPUs
$ pm2 start app.js -i max      # Same as above, but deprecated yet.

# 列表

$ pm2 list               # Display all processes status
$ pm2 jlist              # Print process list in raw JSON
$ pm2 prettylist         # Print process list in beautified JSON

$ pm2 describe 0         # Display all informations about a specific process

$ pm2 monit              # Monitor all processes

# 日志

$ pm2 logs [--raw]       # Display all processes logs in streaming
$ pm2 flush              # Empty all log file
$ pm2 reloadLogs         # Reload all logs

# Actions

$ pm2 stop all           # Stop all processes
$ pm2 restart all        # Restart all processes

$ pm2 reload all         # Will 0s downtime reload (for NETWORKED apps)
$ pm2 gracefulReload all # Send exit message then reload (for networked apps)

$ pm2 stop 0             # Stop specific process id
$ pm2 restart 0          # Restart specific process id

$ pm2 delete 0           # Will remove process from pm2 list
$ pm2 delete all         # Will remove all processes from pm2 list

# 杂项

$ pm2 reset <process>    # Reset meta data (restarted time...)
$ pm2 updatePM2          # Update in memory pm2
$ pm2 ping               # Ensure pm2 daemon has been launched
$ pm2 sendSignal SIGUSR2 my-app # Send system signal to script
$ pm2 start app.js --no-daemon
$ pm2 start app.js --no-vizion
$ pm2 start app.js --no-autorestart

启动项相关

--name "项目名称"
--merge-logs 		# 将多个进程下的logs合并到一个文件中
-o $OUT_LOG 		# 访问日志输出文件
-e $ERROR_LOG		# 错误日志输出文件
-i 4			# 多进程
--wait-ready		# 等待项目中的资源和端口准备就绪再启动 pm2

wait-ready 使用实例

nodejs启动实例

const http = require('http');
const app = http.createServer(function(req, res) {
  res.writeHead(200);
  res.end('hey');
});
const listener = app.listen(0, function() {
  console.log('Listening on port ' + listener.address().port);
  // 通知 pm2 应用程序已准备就绪，可以启动了
  if (process.send) {
     process.send('ready');
  }
});

pm2启动项

pm2 start app.js --wait-ready