Enabling systemd-coredump by default is from the perspective of ABRT the biggest change in Fedora 26.
How ABRT works?
There is a service
abrt-ccpp.service which runs
/usr/sbin/abrt-install-ccpp-hook install that causes ABRT’s
kernel.core_pattern hook to be installed. What it basically does
is that it saves current
and replaces it with string
|/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t %P %I.
This causes that all coredumps are processed by ABRT’s hook
which by default dumps core into ABRT’s problem directories which are created
/var/spool/abrt. After processing is finished you can use
abrt command line
tool for further analysis (remote backtrace generating, run GDB against the
problem, print information about the problem and so on). For more information
about the tool see
How will ABRT work in Fedora 26?
abrt-ccpp.service won’t be enabled so default
kernel.core_pattern won’t be
replaced by ABRT’s one.
It means, coredumps will be processed by
systemd-coredump and metadata about
coredumps will be stored in the systemd journal. The
will be replaced by
abrt-journal-core.service. This service extracts coredumps
and other important information about problems from systemd journal.
How does it affect ABRT users?
ABRT users shouldn’t experience any changes. Problem directories will be still
/var/spool/abrt and all will work like in older Fedoras.
If users want to use ABRT’s hook instead of the systemd one they can easily
abrt-journal-core.service and enable
abrt-ccpp.service by running
# systemctl disable abrt-journal-core.service # systemctl stop abrt-journal-core.service # systemctl enable abrt-ccpp.service # systemctl start abrt-ccpp.service