https://bz.apache.org/bugzilla/show_bug.cgi?id=60071
Bug ID: 60071
Summary: Child httpd processes crash with Segmentation fault
when enabling more than 1 healthcheck
Product: Apache httpd-2
Version: 2.4.23
Hardware: PC
OS: Linux
Status: NEW
Severity: critical
Priority: P2
Component: mod_proxy_hcheck
Assignee: [email protected]
Reporter: [email protected]
I am seeing the following every 2-3 seconds when I have more than 1 pool member
enabled with a healthcheck
[Tue Aug 30 19:57:09.637546 2016] [core:notice] [pid 30412:tid 140320377878336]
AH00051: child pid 24665 exit signal Segmentation fault (11), possible coredump
in /webApps/apache
Example is my hcheck config for a single BalancerMember
ProxyHCExpr ok2x3x {%{REQUEST_STATUS} =~ /^[23]/}
BalancerMember https://xxxxxxxxxxxxxx:443 loadfactor=1 timeout=5
connectiontimeout=500ms hcmethod=GET hcexpr=ok2x3x hcinterval=5 hcpasses=2
hcfails=3 hcuri=/xxxxx/healthcheck
When adding additional members I would simply do
BalancerMember https://xxxxxxxxxxxxxx:443 loadfactor=1 timeout=5
connectiontimeout=500ms hcmethod=GET hcexpr=ok2x3x hcinterval=5 hcpasses=2
hcfails=3 hcuri=/xxxxx/healthcheck
BalancerMember https://xxxxxxxxxxxxxx:443 loadfactor=1 timeout=5
connectiontimeout=500ms hcmethod=GET hcexpr=ok2x3x hcinterval=5 hcpasses=2
hcfails=3 hcuri=/xxxxx/healthcheck
etc and then start to see the segmentation faults which eventually lead to the
parent process stop responding after 12-14 hours.
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