Hi there,
I recently found this message in my error_log which got my httpd stopped working and left pid file behind.
The httpd is 2.4.7 on CentOS 6.4 using rpmbuild.
"[mpm_event:notice] [pid 7185:tid 139687436580608]
AH00493: SIGUSR1 received. Doing graceful restart
httpd: Syntax error on line 33 of /etc/httpd/conf/httpd.conf:
Cannot load lib64/httpd/modules/mod_proxy_fcgi.so into server: /usr/lib64/httpd/modules/mod_proxy_fcgi.so: undefined symbol: ap_fcgi_encoded_env_len"
After the incident, I tried "service httpd status", it told me that httpd is dead but pid file exists.
Restarting httpd makes it back online, but I want to know why it happened?
Thanks.
