Fatal: Can't Create Thread per User Process Limit

Issue

If the following error appears in an error log, it is likely that the OnApp user has hit their available process limit:

Fatal: can't create Thread

Environment

Any OnApp version

Resolution

To check it, use the following command:

# ps -eLF | grep ^onapp | wc -l

The default maximum value is 1024 for CentOS 6 and 4096 for CentOS 7.

This global limit file is located in /etc/security/limits.d/90-nproc.conf. Additionally, if you need to increase this value, you can find a limit per user in /etc/security/limits.conf.