[Resolved] How to get php core dump

[bobykus]

Hello,

We run php 5.3 as Ext App via SuExec daemon. Sometimes it crashes with "Segfault at". Do you know how to get a core of crashed php process to start investigation? Litespeed is started with

ulimit -c unlimited

in starup and env variable for php is set LSAPI_ALLOW_CORE_DUMP=1. Also

 cat /proc/sys/kernel/core_pattern
/tmp/lshttpd/core-%e.%p

but nothing visible in /tmp/lshttpd

 

[Pong]

Try: https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:php:503-errors

 

[bobykus]

Try what? LSAPI_ALLOW_CORE_DUMP=1 is set.

 cat /etc/abrt/abrt-action-save-package-data.conf | grep ProcessUnpackaged
ProcessUnpackaged = yes

 ls -la /var/spool/abrt/
total 8
drwxr-xr-x   2 abrt abrt 4096 Feb 25 13:01 .
drwxr-xr-x. 11 root root 4096 Feb 25 13:01 ..
-rw-r--r--   1 root root    0 Feb 25 13:01 abrt-db

Where core file can be located?

 

[mistwang]

you need to change /proc/sys/kernel/core_pattern to

/tmp/core-%e.%p

PHP suEXEC processes cannot write to /tmp/lshttpd directory.

 

[bobykus]

Yes, that was my fault, sorry. Get the core, it is xcache cacher...