use pm2 code example
Example 1: install pm2
npm install pm2 -g
Example 2: pm2 install
$ npm install pm2@latest -g
# or
$ yarn global add pm2
Example 3: pm2 install
$ pm2 ecosystem
npm install pm2 -g
$ npm install pm2@latest -g
# or
$ yarn global add pm2
$ pm2 ecosystem