nodejs pm2 应用指南

时间：2022-10-18 18:01:11

1.安装配置

pm2是一个带有负载均衡功能的应用进程管理器，类似有Supervisor，forever，详细参数见官网：​​http://pm2.keymetrics.io​​

1、安装 nodejs 和 pm2

curl -sL https://rpm.nodesource.com/setup_8.x | bash -
wget https://nodejs.org/dist/latest-v12.x/node-v12.22.8-linux-x64.tar.gz
tar zxvf node-v12.22.8-linux-x64.tar.gz
mv node-v12.22.8-linux-x64 /usr/local/node
ln -sv /usr/local/node/bin/node /usr/local/bin/node
ln -sv /usr/local/node/bin/npm /usr/local/bin/npm
npm config set registry https://registry.npm.taobao.org
yum install -y nodejs
npm install pm2@latest -g

2.常用指令

2.1.启动

pm2 start app.js
pm2 start app.js --name my-api #my-api为PM2进程名称
pm2 start app.js -i 0 #根据CPU核数启动进程个数
pm2 start app.js --watch #实时监控app.js的方式启动，当app.js文件有变动时，pm2会自动reload

2.2.查看进程

pm2 list
pm2 show 0 或者 # pm2 info 0 #查看进程详细信息，0为PM2进程id

2.3.监控

pm2 monit

2.4.停止

pm2 stop all
pm2 stop 0

2.5.重新加载

pm2 reload all
pm2 reload 0

2.6.重启

pm2 restart all
pm2 restart 0

2.7.删除

pm2 delete 0
pm2 delete all

2.8.日志操作

pm2 logs [–raw]
pm2 flush
pm2 reloadlogs

2.9.升级版本

npm install pm2@lastest -g
pm2 updatePM2

3.自启动

sudo -u postgres pm2 start app.js --name konga
sudo -u postgres pm2 startup
sudo -u postgres pm2 save

4.启动和管理 jar

4.1.配置文件编写

vim datax-admin.json
 


{
    "apps" : {
        "name":"datax-admin",
        "script":"java",
        "args":[
            "-Xmx1024M",
            "-Xms1024M",
            "-Xmn448M",
            "-XX:MaxMetaspaceSize=192M",
            "-XX:MetaspaceSize=192M",
            "-jar",
            "datax-admin-2.1.1.jar",
        ],
       "error_file":"./log/datax-admin-err.log",
       "out_file":"./log/datax-admin-out.log",
        "merge_logs":true,
        "log_date_format":"YYYY/MM/DD HH:mm:ss",
        "min_uptime": "60s",
        "max_restarts": 30,
        "autorestart": true,
        "restart_delay": "60"
        }
}

4.2.带变量的配置文件

node build/app.js server --port=8081
/usr/bin/nohup /usr/local/node/bin/node /var/lib/grafana/plugins/grafana-image-renderer/build/app.js server --port=8081 &
 


{
         "apps" : {
                 "name":"image-renderer",
                  "script":"node",
                  "args":[
                          "/var/lib/grafana/plugins/grafana-image-renderer/build/app.js",
                         "server",
                        "--port=8081",
                  ],
                  "error_file":"/tmp/image-renereer-err.log",
                  "merge_logs":true,
                  "log_date_format":"YYYY/MM/DD HH:mm:ss",
                  "min_uptime": "60s",
                  "max_restarts": 30,
                  "autorestart": true,
                  "restart_delay": "60"
         }
}

4.3.启动

pm2 start datax-admin.json

nodejs pm2 应用指南

nodejs pm2 应用指南

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