ulimits are ignored for systemd processes

[vishesh92]

ISSUE TYPE

• Bug Report

COMPONENT NAME

packaging

CLOUDSTACK VERSION

N/A

CONFIGURATION

N/A

OS / ENVIRONMENT

RHEL7+

SUMMARY

We are setting max process limits in /etc/security/limits.conf to unlimited for cloud user. But RHEL7+ uses systemd which ignores the limits set in /etc/security/limits.conf or /etc/security/limits.d/*.conf.

STEPS TO REPRODUCE

Run cat /proc/$(ps aux |grep cloudstack-management|grep -v grep |awk '{print $2}')/limits
This will print the limit for the cloudstack-management process. The max process limit is not set to unlimited.

EXPECTED RESULTS

The max process limit is set to unlimited.

ACTUAL RESULTS

The max process limit is not set to unlimited.

[DaanHoogland]

@vishesh92 , is this limited to RHEL7+ or is this specific to the use of systemd, i.e. loads of systems suffer from this?

[vishesh92]

@vishesh92 , is this limited to RHEL7+ or is this specific to the use of systemd, i.e. loads of systems suffer from this?

I noticed this in RHEL. But it's probably specific to the use of systemd.

The fix should be simple for this.

[vishesh92]

The fix will be to specify the limits in systemd configuration file.
Ref.: https://access.redhat.com/solutions/1257953