As your infrastructure grows and you bring more agents under management, you may need to increase the number allowed file handles per client.
Configure ulimit for PE services
The various services in PE require up to one file handle per connected client. On most operating system configurations, the defaults will not be high enough for more than a couple hundred clients. To support more clients, you need to increate the number of allowed file handles.
The location and method for configuring ulimit depends on your agent’s platform. You might use systemd, upstart, or some other init system.
In the following instructions, replace
<PE SERVICE> with the specific service you’re editing. The examples show setting a limit of
32768, which you can also change according to what you need.
Configure ulimit using systemd
With systemd, the number of open file handles allowed is controlled by a setting in the service file at
- To increase the limit, run the following commands, setting the
LimitNOFILEvalue to the new number:
mkdir /etc/systemd/system/<PE SERVICE>.service.d echo "[Service] LimitNOFILE=32768" > /etc/systemd/system/<PE SERVICE>.service.d/limits.conf systemctl daemon-reload
- Confirm the change by running:
systemctl show <PE SERVICE> | grep LimitNOFILE
Configure ulimit using upstart
For Ubuntu and Red Hat systems, the number of open file handles allowed for is controlled by settings in service files.
The service files are:
- Red Hat:
ulimit -n 32678
This sets the number of open files allowed at 32,678.
Configure ulimit on other init systems
The ulimit controls the number of processes and file handles that the PE service user can open and process.
To increase the ulimit for a PE service user:
/etc/security/limits.confso that it contains the following lines:
<PE SERVICE USER> soft nofile 32768 <PE SERVICE USER> hard nofile 32768