[Manager] pm2

npm install pm2 -g

$ pm2 start app.js
$ pm2 start --name my_app app.js # Giving a name for it
 
$ pm2 list
 
$ pm2 stop     <app_name|namespace|id|'all'|json_conf>
$ pm2 restart  <app_name|namespace|id|'all'|json_conf>
$ pm2 delete   <app_name|namespace|id|'all'|json_conf>
 
# Zero Downtime Reload
$ pm2 reload all
 
# Show logs
$ pm2 logs <app_name|namespace|id|'all'|json_conf> 
 
# Show more lines
$ pm2 logs <app_name|namespace|id|'all'|json_conf> --lines 30

# Terminal Based Dashboard
$ pm2 monit
 
# Open a Cluster Mode, named "my_server" with 5 nodes
$ pm2 start dist/server.js --name my_server -i 5
 
# Scales `my_server` up by 3 workers
$ pm2 scale my_server +3  
 
 # Scales `my_server` up or down to 2 workers total     
$ pm2 scale my_server 2              

{
    "apps": [
        {
            "name": "services-name",
            "script": "./server.js",
            "exec_mode": "fork",
            "env": {
                "NODE_ENV": "production"
            },
            "time": true,
            "interpreter": "node@20.18.0",
        }
    ]
}

# Start all applications
pm2 start ecosystem.json
 
# Stop all
pm2 stop ecosystem.json
 
# Restart all
pm2 restart ecosystem.json
 
# Reload all
pm2 reload ecosystem.json

{
    "apps": [
        {
            "name": "services-name-one",
            "script": "./frontend/server.js",
            "exec_mode": "fork",
            "env": {
                "NODE_ENV": "production"
            },
            "time": true,
            "interpreter": "node@22.0.0",
        },
        {
            "name": "services-name-two",
            "script": "./backend/server.js",
            "exec_mode": "fork",
            "env": {
                "NODE_ENV": "production"
            },
            "time": true,
            "interpreter": "node@20.18.0",
        },
        {
            "name": "services-name-three",
            "script": "./scrapper/server.js",
            "instances" : "4",
            "exec_mode" : "cluster",
            "time": true,
            "interpreter": "node@18.1.0",
        }
    ]
}