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Enable coredumps in daemon start script
In the daemon startup script (/etc/init.d/mydaemon) add the following line before the definition of the "start()" method:
- DAEMON_COREFILE_LIMIT="unlimited"
Enable coredumps globally
Edit the /etc/profile configuration file. Search for existing ulimit -c commands and replace with:
- # Enable core files by default
- ulimit -c unlimited > /dev/null 2>&1
Allow setuid programs to dump core
# The suid_dumpable control file is found in different places ...
- if [ -e /proc/sys/kernel/suid_dumpable ]; then
- echo 1 > /proc/sys/kernel/suid_dumpable
- else
- echo 1 > /proc/sys/fs/suid_dumpable
- fi
Changing coredump location
- echo /var/tmp/core > /proc/sys/kernel/core_pattern
Make above changes persistent after reboot
Add the following entries to /etc/sysctl.conf:
- # Allow suid programs to dump core
- fs.suid_dumpable = 1
- # Dump core in /var/tmp
- kernel.core_pattern = /var/tmp/core
Testing coredumpsSend the process the SIGABRT signal, it should abort and dump core:
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