On a newly installed Red Hat system, by default no core files are generated for crashed processes. To enable core files, make the following changes (as user root):

Red Hat 7/8

Configure the corefile size limit in the following file:

/etc/systemd/system.conf

Add or uncomment the following line:

DefaultLimitCORE=infinity

Add the core file pattern tunable:

/etc/sysctl.conf

kernel.core_uses_pid = 0
kernel.core_pattern = core.%E.core

Activate the core file pattern in the running kernel:

# sysctl -p /etc/sysctl.conf
# systemctl daemon-reexec

Verification

Restart httpd (and SKOOR Engine services, if they are already installed), then logout and login again. To test creation of core files run a kill command on the PID of the collector process:

# kill -SEGV <PID>

This should create collector core file:

# ls /var/opt/run/eranger/collector/core*
core.!opt!eranger!bin!eranger-collector.core