I have a product with many executables, and in its older versions (RHEL 5 and previous) the default behavior when a crash occurred was to deposit the core file in the executable's current working directory, with the name core.pid. In RHEL 7 and 8, the new behavior is that all core files go to /var/lib/systemd/coredump/. In order to avoid modifying about a dozen watchdog programs that expect the old behavior, I'd prefer to just revert to the old core locations (in process's cwd). How do I change that behavior?
1 Answers
Looks like I found my own answer. I added this line to /etc/sysctl.d/99-sysctl.conf:
kernel.core_pattern = core.%p
and that's all that was necessary. This takes effect after reboot, but you can also make it immediate by running
echo "core.%p" > /proc/sys/kernel/core_pattern
Note that my servers are NOT running abrtd, and this likely has an effect on whether this solution works.
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