Unitech
PM2 Pid file is not being create.
I installed node and pm2(globally) as root user.
I setup all my project as non sudo user and setup ecosystem files for start applications using pm2
When i run pm2 startup. it provides command that command i run as root user. and then pm2 save.
After restart server, then pm2 is not able to restart all applications.
I checked pm-user.service is failing because pm2.pid file not found
I tried many times but PM2.PID is not creating So pm-nonuser.service is failing
Any solution??
Reason:-
Yes, this is a common PM2 + systemd + multiple user context issue.
When you install Node.js and PM2 as root, but run your apps and ecosystem setup as a non-root user, PM2 gets confused during pm2 startup because it mixes context between the root and non-root user environments.
Let’s fix it step-by-step so that your PM2 setup works reliably across reboots for the non-root user.
Step-by-Step Solution
- Clean Existing PM2 Root Setup (Optional But Recommended) This avoids conflict between root and non-root PM2 environments.
Run this commands as root:
pm2 unstartup
pm2 kill
- Switch to Your Non-root User Let’s assume your non-root user is devuser. Switch if you're not already:
su - devuser
Or if you're logged in directly as devuser, skip this step.
- Install PM2 Locally (Non-root) Make sure pm2 is installed in this user’s environment.
npm install -g pm2
- Run PM2 Startup for the Current User This is crucial: Run pm2 startup as the non-root user.
pm2 startup
It will show a command like this:
sudo env PATH=$PATH:/home/devuser/.nvm/versions/node/vXX/bin pm2 startup systemd -u devuser --hp /home/devuser
Copy and paste that command and run it as root (with sudo).
sudo env PATH=$PATH:/home/devuser/.nvm/versions/node/vXX/bin pm2 startup systemd -u devuser --hp /home/devuser
This sets up a proper pm2-devuser.service with the correct environment.
- Save the Current PM2 Process ListStill as devuser:
pm2 save
This saves the process list that should be auto-started on reboot.
- Reboot and Test
sudo reboot
After reboot, log in as devuser and run:
pm2 ls
