I am unable to locate systemd-coredump service on CentOS 7.5. It is not listed under "systemctl -a" and also I'm unable to locate the associated unit file (folder /usr/lib/systemd/system/ ). Am I missing any package which installs this service?
I don't really understand what you are looking for but don't you have /usr/lib/systemd/systemd-coredump and /usr/bin/systemd-coredumpctl on your system?
Regards, Simon