Why are you using the event mpm with mod_php? This isn't recommended. On Thu, Mar 23, 2023 at 3:37 PM <met...@newjersey.metaed.com.invalid> wrote:
> An Apache/2.4.56 (Unix) server using "event" MPM sometimes does not clean > up an > idle old gen worker after "apachectl graceful". The old gen worker > continues to > take requests. The syslog contains AH00646 errors thrown when the old gen > worker > handles a request and attempts to record the transfer on a closed pipe. > > I cannot reproduce "at will", but the problem does reappear frequently. > > Normally, "apachectl graceful" is executed by the daily "dehydrated" ACME > client > "deploy_cert" hook, which is called when a new certificate is produced. If > multiple certificates age out on the same day, this can result in as many > rapid-fire back-to-back "apachectl graceful" calls as there are > certificates to > regen. Manually running "dehydrated -c -x" (force-regen all certificates at > once) sometimes recreates the problem, but not always. > > Once the condition is present, the first "apachectl stop" stops new gen > worker > but not old gen worker, and the second "apachectl stop" reports the PID > file is > gone and does nothing. To bring completely down, one can "pkill httpd", or > the > moral equivalent. > > This is a light-duty personal server. Traffic is very light -- 500 > requests per > hour, mostly static with a bit of PHP. server_status generally shows all > scoreboard slots either open (.) or waiting for connection (_), except the > server_status request itself (W). > > When server_status is handled by the new gen worker, the old gen worker is > shown > as "Stopping: no (old gen)". And (strangely to me), when server_status is > handled by the old gen worker, the new gen worker is shown as "Stopping: > no (old > gen)". > > I see other people have reported similar problems in the past. All seem to > point > to a bug tracked as Bugzilla 63169 and fixed in 2.4.49. This server is at > 2.4.56. It is Slackware 15.0's stock httpd. > > Loaded Modules > core.c, event.c, http_core.c, mod_alias.c, mod_authz_core.c, > mod_authz_host.c, > mod_autoindex.c, mod_cgid.c, mod_dir.c, mod_headers.c, mod_info.c, > mod_log_config.c, mod_mime.c, mod_negotiation.c, mod_php7.c, > mod_reqtimeout.c, > mod_so.c, mod_socache_shmcb.c, mod_ssl.c, mod_status.c, mod_unixd.c > > Configuration of event.c is: > Listen 80 > Listen 443 > MaxRequestWorkers 25 > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org > For additional commands, e-mail: users-h...@httpd.apache.org > >
