如何使用PM2做进程管理

const http = require('http')

const hostname = '127.0.0.1'
const port = 3001

const server = http.createServer((req, res) => {
res.statusCode = 200
res.setHeader('Content-Type', 'text/plain')
res.end('My Application 1\n')
})

server.listen(port, hostname, () => {
console.log(`服务器运行在 http://${hostname}:${port}/`)
})

$ pm2 start app1.js

$ pm2 start bashscript.sh
$ pm2 start python-app.py --watch
$ pm2 start binary-file -- --port 1520

# 指定应用名称
--name

# 监视并且在文件发生变更时重启应用
--watch

# 设置应用重新加载的内存阈值
--max-memory-restart <200MB>

# 指定日志文件
--log

# 将额外的参数传递给脚本
-- arg1 arg2 arg3

# 自动重启间的延迟
--restart-delay <delay in ms>

# 给日志加上时间戳前缀
--time

# 禁用自动重启应用
--no-autorestart

# 设置 cron 强制重启
--cron

# 附加到应用程序日志
--no-daemon

$ pm2 list

$ pm2 show <id|app_name>

$ pm2 start app.js -i max

$ pm2 reload all

$ pm2 startup

$ pm2 save

$ npm install pm2@latest -g

# 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.
pm2 scale app +3 # Scales `app` up by 3 workers
pm2 scale app 2 # Scales `app` up or down to 2 workers total

# Listing

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

# Logs

pm2 logs [--raw] # Display all processes logs in streaming
pm2 flush # Empty all log files
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 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

# Misc

pm2 reset # 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

$ pm2 ecosystem

module.exports = {
apps : [{
script: 'index.js',
watch: '.'
}, {
script: './service-worker/',
watch: ['./service-worker']
}],

deploy : {
production : {
user : 'SSH_USERNAME',
host : 'SSH_HOSTMACHINE',
ref : 'origin/master',
repo : 'GIT_REPOSITORY',
path : 'DESTINATION_PATH',
'pre-deploy-local': '',
'post-deploy' : 'npm install && pm2 reload ecosystem.config.js --env production',
'pre-setup': ''
}
}
};

$ pm2 start my_app.py --interpreter '/usr/bin/python'
$ pm2 start my_app.bat --interpreter 'cmd.exe'

$ pm2 init simple

module.exports = {
apps : [{
name : "app1",
script : "./app.js"
}]
}

module.exports = {
apps : [{
name : "app6",
script : "java.exe",
"args": [
"-jar",
"app6.jar"
],
"exec_interpreter": "",
"exec_mode": "fork"
}]
}

$ pm2 start app6.config.js

$ pm2 start ecosystem.config.js --only "app1"

$ pm2 start ecosystem.config.js --only "app1,app3"

module.exports = {
apps : [{
name : "app1",
script : "./app.js",
env_production: {
NODE_ENV: "production"
},
env_development: {
NODE_ENV: "development"
}
}]
}

$ pm2 start process.json --env production
$ pm2 restart process.json --env development