Last entry in the error log is 2016-08-07 18:08:46: (server.c.1444) [note] sockets disabled, connection limit reached, but that's several days old.
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The host has a high load average (4), and several 100% CPU php-cgi processes from tools.jembot: T132880: tools.jembot PHP processes run out of memory and leave orphan php-cgi processes regularly?
Server also doesn't respond on localhost:
valhallasw@tools-webgrid-lighttpd-1403:~$ grep /var/run/lighttpd/templatetransclusioncheck -e 'port' server.port = 57645 valhallasw@tools-webgrid-lighttpd-1403:~$ telnet localhost 57645 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. GET /templatetransclusioncheck HTTP/1.0
Strace shows lighttpd in a wait loop:
sudo strace -f -p 23583
Process 23583 attached
epoll_wait(6, {}, 1025, 1000) = 0
epoll_wait(6, {}, 1025, 1000) = 0
epoll_wait(6, {}, 1025, 1000) = 0There are a bunch of php-cgi processes running:
52410 23583 0.0 0.0 52312 5756 ? Ss Jun02 11:14 /usr/sbin/lighttpd -f /var/run/lighttpd/templatetransclusioncheck -D 52410 23588 0.0 0.2 329336 20408 ? Ss Jun02 0:00 /usr/bin/php-cgi 52410 23589 0.0 0.2 329336 20516 ? Ss Jun02 0:00 /usr/bin/php-cgi 52410 23590 0.0 0.2 429520 16416 ? S Jun02 0:21 /usr/bin/php-cgi 52410 23591 0.0 0.1 429992 16104 ? S Jun02 0:28 /usr/bin/php-cgi 52410 24293 0.0 0.1 429224 14036 ? S Aug04 0:21 /usr/bin/php-cgi 52410 27543 0.0 0.1 429124 14272 ? S Aug04 0:22 /usr/bin/php-cgi
but these are not doing anything according to strace. Not sure what's happening here -- I'll restart the webservice, and that hopefully will resolve the issue.