问题
I want to change the default location of core dump files so that every time a core dump is generated ,it goes to that directory.Also, is it possible to save the dump file by the name of the crashed file in this location?
回答1:
Yes, it is. You can change /proc/sys/kernel/core_pattern to define the pathname used to generate the corefile. For more, see man core
example:
echo '/tmp/core_%e.%p' | sudo tee /proc/sys/kernel/core_pattern # `tee' instead of > so that
# opening happens in the
# elevated process
would cause all future core dumps to be generated in /tmp and be named core_[program].[pid]
回答2:
Before following the instructions in the accepted answer, it could be good idea to check the contents of /proc/sys/kernel/core_pattern to see if the Redhat abrt system is in use.
-> cat /proc/sys/kernel/core_pattern
|/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t e
If that is in use, then you already have a pretty extensive scheme for managing core files that you would want to understand before you override it.
In a nutshell, abrt:
- puts the core files here:
/var/spool/abrt/ - has a gui that is started with the command
abrt-gui - augments the corefile with additional information about the failed process.
- is configure with this file:
/etc/abrt/abrt-action-save-package-data.conf
One common stumbling block with using it is to change this line in the config file:
ProcessUnpackaged = no
Change that to yes to capture core files from your homebrew processes, otherwise it will only capture corefiles from programs installed by the package manager.
[EDIT to answer how to use coredump] To examine a core dump I do this:
cd /var/spool/abrt/XXXXXXX
gdb $(cat executable) coredump
There might be a better way to so that, but gdb has served me well so I have not looked for other ways. Just replace XXXXXXX with the folder that contains your coredump file. The gdb command is cut and paste ready.
References:
Redhat Book
CentOS Forum
来源：https://stackoverflow.com/questions/16048101/changing-location-of-core-dump