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My apache server simply crashed. From /var/log/httpd/error.log.1:
[Sun Jun 24 00:00:31.279180 2018] [mpm_event:notice] [pid 5697:tid 3082519104] AH00493: SIGUSR1 received. Doing graceful restart
httpd: Syntax error on line 154 of /etc/httpd/conf/httpd.conf: Cannot load modules/mod_mpm_event.so into server: /etc/httpd/modules/mod_mpm_event.so: undefined symbol: ap_queue_info_wait_for_idlerThe timestamp is very close to the "mtime" of rotated logfile:
> stat /var/log/httpd/error_log.1
File: error_log.1
Size: 5799970 Blocks: 11360 IO Block: 4096 regular file
Device: 801h/2049d Inode: 393350 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2018-06-24 00:02:00.916603907 +0200
Modify: 2018-06-24 00:00:32.593148937 +0200
Change: 2018-06-24 00:00:32.593148937 +0200
Birth: -Offline
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Sounds upstream has the same issue: https://webcache.googleusercontent.com/ … refox-b-ab.
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The name ap_queue_info_wait_for_idler would makes one think it's a function from APR, but
it's defined in: src/httpd-2.4.33/server/mpm_fdqueue.h and implemented in
src/httpd-2.4.33/server/mpm_fdqueue.c
Maybe this is a too agressive elimination of exported functions, as the function is only used at runtime
by the module?
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