$ vi pm2-lt.yaml
apps: - name : 'localtunnel' script: 'lt' args: '-p <port> -s <subdomain>' instances: '1' autorestart: true max_restarts: 10 max_memory_restart: '500M' watch : false error_file: 'err-prod.log' out_file: 'out-prod.log' log_file: 'combined-prod.log' // replace <port>, <subdomain> as you want
$ pm2 start pm2-lt.yaml $ pm2 save