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Docs: Fix core dump instructions for daemon with SUID bit set 

refs #12648
This commit is contained in:
Michael Friedrich 2016-09-08 08:30:03 +02:00
parent 1dc4ab367e
commit 38ac7b2070
1 changed files with 15 additions and 5 deletions
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doc/20-development.md
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@ -279,16 +279,22 @@ Verify that the Icinga 2 process core file size limit is set to `unlimited`.
### <a id="development-debug-core-dump-format"></a> Core Dump Kernel Format ### <a id="development-debug-core-dump-format"></a> Core Dump Kernel Format
Adjust the coredump kernel format and file location. The Icinga 2 daemon runs with the SUID bit set. Therefore you need
to explicitly enable core dumps for SUID on Linux.
vim /etc/sysctl.conf sysctl -w fs.suid_dumpable=1
kernel.core_pattern = /var/lib/cores/core.%e.%p Adjust the coredump kernel format and file location on Linux:
sysctl -p sysctl -w kernel.core_pattern=/var/lib/cores/core.%e.%p
mkdir /var/lib/cores install -m 1777 -d /var/lib/cores
MacOS:
sysctl -w kern.corefile=/cores/core.%P
chmod 777 /cores
### <a id="development-debug-core-dump-analysis"></a> Core Dump Analysis ### <a id="development-debug-core-dump-analysis"></a> Core Dump Analysis
@ -305,4 +311,8 @@ Simple test case for a `SIGSEGV` simulation with `sleep`:
(gdb) bt (gdb) bt
rm /var/lib/cores/core.sleep.* rm /var/lib/cores/core.sleep.*
Analyzing Icinga 2:
gdb /usr/lib64/icinga2/sbin/icinga2 core.icinga2.<PID>
(gdb) bt