The solution of the error “Job for puppetserver.service failed because the control process exited with error code”

I noticed once when I started Puppet server, after installation, the following error:

Job for puppetserver.service failed because the control process exited with error code. See “systemctl status puppetserver.service” and “journalctl -xe” for details.

The error occurs because there is not enough RAM and to fix the error, open the Puppet server configuration file:

sudo nano /etc/default/puppetserver

And reduce the amount of allocated RAM for the Puppet server (for example, I specified 512m instead of 2g):

JAVA_ARGS="-Xms512m -Xmx512m"

Now let’s start the Puppet server:

sudo systemctl start puppetserver