* It should only log rotate on log files
As explained in https://github.com/Unitech/pm2/issues/2498#issuecomment-263678535 :
The logs are being saved as index-out-0.log and index-error-0.log.
If you just leave /home/user/.pm2/pm2.log /home/user/.pm2/logs/*, the first time logrotate runs, it generates index-out-0.log.1. The second time it runs it generates index-out-0.log.1.1, and it continues creating files for each file found, since you are including all files.
It should be reverted back to *.log or *log
