Automatically Restart PM2 Processes After a Server Reboot

Here are the steps to make PM2 restart processes automatically after a reboot:

Step 1) Save the current process list

pm2 save

Step 2) Generate startup script for pm2

pm2 startup

Note : This will give output a command specific to your server's operating system. Copy and run the generated command in same terminal to enable PM2 startup on boot.
example : sudo env PATH=$PATH:/home/owncloud/.nvm/versions/node/v20.18.0/bin /usr/local/lib/node_modules/pm2/bin/pm2 startup systemd -u owncloud --hp /home/owncloud

Step 3) Verify the startup configuration

pm2 list


Optional: To set up a PM2 process to restart every 5 minutes using a cron job, you can follow these steps:

pm2 restart 0 --cron "*/5 * * * *"

pm2 show 0