Bug #1988224 “apache stuck and child processes fail to start” : Bugs : apache2 package : Ubuntu

Revision history for this message

Sergio Durigan Junior (sergiodj) wrote on 2022-08-31:

#1

Thanks for the bug report.

I tried reproducing it here using the configuration file outlined in https://bz.apache.org/bugzilla/show_bug.cgi?id=65769#c1, but as far as I have checked things are still working. Would you have a reproducer that I can use to make sure that we're dealing with aforementioned upstream issue?

Thanks.

Changed in apache2 (Ubuntu):
status:	New → Incomplete

Revision history for this message

Daniel (danuntu) wrote on 2022-08-31 (last edit on 2022-08-31):

#2

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I think I can reproduce this on my server. I changed the apache config as follows and called lynx a few times. After a few successful lynxes, the server no longer responds. What can i do to debug more?

apache config:

<IfModule mpm_event_module>
    StartServers 1
    MinSpareThreads 1
    MaxSpareThreads 1
    ThreadsPerChild 1
    MaxRequestWorkers 1
    MaxConnectionsPerChild 1
</IfModule>

# systemctl restart apache2.service
# tail -f /var/log/apache2/error.log

[Wed Aug 31 22:45:54.390886 2022] [mpm_event:notice] [pid 998699:tid 139894640904064] AH00492: caught SIGWINCH, shutting down gracefully
[Wed Aug 31 22:45:54.649967 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity for Apache/2.9.5 (http://www.modsecurity.org/) configured.
[Wed Aug 31 22:45:54.650003 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: APR compiled version="1.7.0"; loaded version="1.7.0"
[Wed Aug 31 22:45:54.650016 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: PCRE compiled version="8.39 "; loaded version="8.39 2016-06-14"
[Wed Aug 31 22:45:54.650023 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: LUA compiled version="Lua 5.1"
[Wed Aug 31 22:45:54.650029 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: YAJL compiled version="2.1.0"
[Wed Aug 31 22:45:54.650035 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: LIBXML compiled version="2.9.12"
[Wed Aug 31 22:45:54.650094 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: StatusEngine call: "2.9.5,Apache/2.4.52 (Ubuntu),1.7.0/1.7.0,8.39/8.39 2016-06-14,Lua 5.1,2.9.12,e0c86efba80afb51d5e1caae78c38635f2f8b5df"
[Wed Aug 31 22:46:02.727769 2022] [suexec:notice] [pid 1000585:tid 140120599648128] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Wed Aug 31 22:46:02.982447 2022] [ssl:warn] [pid 1000591:tid 140120599648128] AH01909: broeltal.de:443:0 server certificate does NOT include an ID which matches the server name
[Wed Aug 31 22:46:03.025496 2022] [mpm_event:notice] [pid 1000591:tid 140120599648128] AH00489: Apache/2.4.52 (Ubuntu) OpenSSL/3.0.2 mod_fcgid/2.3.9 configured -- resuming normal operations
[Wed Aug 31 22:46:03.025617 2022] [core:notice] [pid 1000591:tid 140120599648128] AH00094: Command line: '/usr/sbin/apache2'

after 3 successfully lynx commands:
[Wed Aug 31 22:46:18.046440 2022] [mpm_event:error] [pid 1000591:tid 140120599648128] AH00484: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting

# ps xaufe
root 1000591 0.5 0.2 69388 18392 ? Ss 22:46 0:00 /usr/sbin/apache2 -k start
root 1000593 0.0 0.0 3088 1164 ? S 22:46 0:00 \_ /usr/bin/rotatelogs -l /www/foo1_log 3600
root 1000594 0.0 0.0 3088 1136 ? S 22:46 0:00 \_ /usr/bin/rotatelogs -l /www/foo2_log 1800
www-data 1000597 0.0 0.1 69332 13424 ? S 22:46 0:00 \_ /usr/sbin/apache2 -k start
www-data 1000644 0.0 0.1 233620 14836 ? Sl 22:46 0:00 \_ /usr/sbin/apache2 -k start

$ lynx -dump -read_timeout=10 localhost/server-status
Apache Server Status for localhost (...

I think I can reproduce this on my server. I changed the apache config as follows and called lynx a few times. After a few successful lynxes, the server no longer responds. What can i do to debug more?

apache config:

<IfModule mpm_event_module>
    StartServers             1
    MinSpareThreads         1
    MaxSpareThreads        1
    ThreadsPerChild         1
    MaxRequestWorkers      1
    MaxConnectionsPerChild   1
</IfModule>

# systemctl restart apache2.service
# tail -f /var/log/apache2/error.log

[Wed Aug 31 22:45:54.390886 2022] [mpm_event:notice] [pid 998699:tid 139894640904064] AH00492: caught SIGWINCH, shutting down gracefully
[Wed Aug 31 22:45:54.649967 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity for Apache/2.9.5 (http://www.modsecurity.org/) configured.
[Wed Aug 31 22:45:54.650003 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: APR compiled version="1.7.0"; loaded version="1.7.0"
[Wed Aug 31 22:45:54.650016 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: PCRE compiled version="8.39 "; loaded version="8.39 2016-06-14"
[Wed Aug 31 22:45:54.650023 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: LUA compiled version="Lua 5.1"
[Wed Aug 31 22:45:54.650029 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: YAJL compiled version="2.1.0"
[Wed Aug 31 22:45:54.650035 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: LIBXML compiled version="2.9.12"
[Wed Aug 31 22:45:54.650094 2022] [:notice] [pid 1000585:tid 140120599648128] ModSecurity: StatusEngine call: "2.9.5,Apache/2.4.52 (Ubuntu),1.7.0/1.7.0,8.39/8.39 2016-06-14,Lua 5.1,2.9.12,e0c86efba80afb51d5e1caae78c38635f2f8b5df"
[Wed Aug 31 22:46:02.727769 2022] [suexec:notice] [pid 1000585:tid 140120599648128] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Wed Aug 31 22:46:02.982447 2022] [ssl:warn] [pid 1000591:tid 140120599648128] AH01909: broeltal.de:443:0 server certificate does NOT include an ID which matches the server name
[Wed Aug 31 22:46:03.025496 2022] [mpm_event:notice] [pid 1000591:tid 140120599648128] AH00489: Apache/2.4.52 (Ubuntu) OpenSSL/3.0.2 mod_fcgid/2.3.9 configured -- resuming normal operations
[Wed Aug 31 22:46:03.025617 2022] [core:notice] [pid 1000591:tid 140120599648128] AH00094: Command line: '/usr/sbin/apache2'

after 3 successfully lynx commands:
[Wed Aug 31 22:46:18.046440 2022] [mpm_event:error] [pid 1000591:tid 140120599648128] AH00484: server reached MaxRequestWorkers setting, consider raising the MaxRequestWorkers setting

# ps xaufe
root     1000591  0.5  0.2  69388 18392 ?        Ss   22:46   0:00 /usr/sbin/apache2 -k start
root     1000593  0.0  0.0   3088  1164 ?        S    22:46   0:00  \_ /usr/bin/rotatelogs -l /www/foo1_log 3600
root     1000594  0.0  0.0   3088  1136 ?        S    22:46   0:00  \_ /usr/bin/rotatelogs -l /www/foo2_log 1800
www-data 1000597  0.0  0.1  69332 13424 ?        S    22:46   0:00  \_ /usr/sbin/apache2 -k start
www-data 1000644  0.0  0.1 233620 14836 ?        Sl   22:46   0:00  \_ /usr/sbin/apache2 -k start

$ lynx -dump -read_timeout=10 localhost/server-status
               Apache Server Status for localhost (via 127.0.0.1)

Server Version: Apache/2.4.52 (Ubuntu) OpenSSL/3.0.2 mod_fcgid/2.3.9
   Server MPM: event
   Server Built: 2022-06-14T12:30:21
     __________________________________________________________________

Current Time: Wednesday, 31-Aug-2022 22:46:12 CEST
   Restart Time: Wednesday, 31-Aug-2022 22:46:03 CEST
   Parent Server Config. Generation: 1
   Parent Server MPM Generation: 0
   Server uptime: 9 seconds
   Server load: 0.29 0.17 0.09
   Total accesses: 0 - Total Traffic: 0 kB - Total Duration: 0
   CPU Usage: u.25 s.02 cu0 cs0 - 3% CPU load
   0 requests/sec - 0 B/second
   0 requests currently being processed, 0 idle workers

Slot   PID   Stopping   Connections    Threads      Async connections
                         total accepting busy idle writing keep-alive closing
   0    1000598 yes      0     no        0    0    0       0          0
   Sum  1       1        0               0    0    0       0          0

W

Scoreboard Key:
   "_" Waiting for Connection, "S" Starting up, "R" Reading Request,
   "W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup,
   "C" Closing connection, "L" Logging, "G" Gracefully finishing,
   "I" Idle cleanup of worker, "." Open slot with no current process

Srv PID Acc M CPU SS Req Dur Conn Child Slot Client Protocol VHost
   Request
   0-0 1000598 1/0/0 W 0.00 0 0 0 0.0 0.00 0.00 127.0.0.1 http/1.1
   servername.domain.de:80 GET /server-status HTTP/1.0
     __________________________________________________________________

Srv  Child Server number - generation
    PID  OS process ID
    Acc  Number of accesses this connection / this child / this slot
     M   Mode of operation
    CPU  CPU usage, number of seconds
    SS   Seconds since beginning of most recent request
    Req  Milliseconds required to process most recent request
    Dur  Sum of milliseconds required to process all requests
   Conn  Kilobytes transferred this connection
   Child Megabytes transferred this child
   Slot  Total megabytes transferred this slot
     __________________________________________________________________

mod_fcgid status:

Total FastCGI processes: 0
     __________________________________________________________________

SSL/TLS Session Cache Status:
   cache type: SHMCB, shared memory: 512000 bytes, current entries: 0
   subcaches: 32, indexes per subcache: 88
   index usage: 0%, cache usage: 0%
   total entries stored since starting: 0
   total entries replaced since starting: 0
   total entries expired since starting: 0
   total (pre-expiry) entries scrolled out of the cache: 0
   total retrieves since starting: 0 hit, 0 miss
   total removes since starting: 0 hit, 0 miss
     __________________________________________________________________

Apache/2.4.52 (Ubuntu) Server at localhost Port 80
$ lynx -dump -read_timeout=10 localhost/server-status
               Apache Server Status for localhost (via 127.0.0.1)

Server Version: Apache/2.4.52 (Ubuntu) OpenSSL/3.0.2 mod_fcgid/2.3.9
   Server MPM: event
   Server Built: 2022-06-14T12:30:21
     __________________________________________________________________

Current Time: Wednesday, 31-Aug-2022 22:46:15 CEST
   Restart Time: Wednesday, 31-Aug-2022 22:46:03 CEST
   Parent Server Config. Generation: 1
   Parent Server MPM Generation: 0
   Server uptime: 12 seconds
   Server load: 0.29 0.17 0.09
   Total accesses: 1 - Total Traffic: 4 kB - Total Duration: 1
   CPU Usage: u.25 s.02 cu0 cs0 - 2.25% CPU load
   .0833 requests/sec - 341 B/second - 4096 B/request - 1 ms/request
   0 requests currently being processed, 0 idle workers

Slot   PID   Stopping   Connections    Threads      Async connections
                         total accepting busy idle writing keep-alive closing
   1    1000613 yes      0     no        0    0    0       0          0
   Sum  1       1        0               0    0    0       0          0

.W

Scoreboard Key:
   "_" Waiting for Connection, "S" Starting up, "R" Reading Request,
   "W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup,
   "C" Closing connection, "L" Logging, "G" Gracefully finishing,
   "I" Idle cleanup of worker, "." Open slot with no current process

Srv PID Acc M CPU SS Req Dur Conn Child Slot Client Protocol VHost
   Request
   0-0 - 0/0/1 . 0.00 2 1 1 0.0 0.00 0.00 127.0.0.1 http/1.1
   servername.domain.de:80 GET /server-status HTTP/1.0
   1-0 1000613 1/0/0 W 0.00 0 0 0 0.0 0.00 0.00 127.0.0.1 http/1.1
   servername.domain.de:80 GET /server-status HTTP/1.0
     __________________________________________________________________

Srv  Child Server number - generation
    PID  OS process ID
    Acc  Number of accesses this connection / this child / this slot
     M   Mode of operation
    CPU  CPU usage, number of seconds
    SS   Seconds since beginning of most recent request
    Req  Milliseconds required to process most recent request
    Dur  Sum of milliseconds required to process all requests
   Conn  Kilobytes transferred this connection
   Child Megabytes transferred this child
   Slot  Total megabytes transferred this slot
     __________________________________________________________________

mod_fcgid status:

Total FastCGI processes: 0
     __________________________________________________________________

SSL/TLS Session Cache Status:
   cache type: SHMCB, shared memory: 512000 bytes, current entries: 0
   subcaches: 32, indexes per subcache: 88
   index usage: 0%, cache usage: 0%
   total entries stored since starting: 0
   total entries replaced since starting: 0
   total entries expired since starting: 0
   total (pre-expiry) entries scrolled out of the cache: 0
   total retrieves since starting: 0 hit, 0 miss
   total removes since starting: 0 hit, 0 miss
     __________________________________________________________________

Apache/2.4.52 (Ubuntu) Server at localhost Port 80
$ lynx -dump -read_timeout=10 localhost/server-status
               Apache Server Status for localhost (via 127.0.0.1)

Server Version: Apache/2.4.52 (Ubuntu) OpenSSL/3.0.2 mod_fcgid/2.3.9
   Server MPM: event
   Server Built: 2022-06-14T12:30:21
     __________________________________________________________________

Current Time: Wednesday, 31-Aug-2022 22:46:16 CEST
   Restart Time: Wednesday, 31-Aug-2022 22:46:03 CEST
   Parent Server Config. Generation: 1
   Parent Server MPM Generation: 0
   Server uptime: 13 seconds
   Server load: 0.26 0.17 0.09
   Total accesses: 2 - Total Traffic: 9 kB - Total Duration: 2
   CPU Usage: u.25 s.02 cu0 cs.01 - 2.15% CPU load
   .154 requests/sec - 708 B/second - 4608 B/request - 1 ms/request
   0 requests currently being processed, 0 idle workers

Slot   PID   Stopping   Connections    Threads      Async connections
                         total accepting busy idle writing keep-alive closing
   0    1000626 yes      0     no        0    0    0       0          0
   Sum  1       1        0               0    0    0       0          0

W

Scoreboard Key:
   "_" Waiting for Connection, "S" Starting up, "R" Reading Request,
   "W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup,
   "C" Closing connection, "L" Logging, "G" Gracefully finishing,
   "I" Idle cleanup of worker, "." Open slot with no current process

Srv PID Acc M CPU SS Req Dur Conn Child Slot Client Protocol VHost
   Request
   0-0 1000626 1/0/1 W 0.00 0 0 1 0.0 0.00 0.00 127.0.0.1 http/1.1
   servername.domain.de:80 GET /server-status HTTP/1.0
   1-0 - 0/0/1 . 0.00 0 1 1 0.0 0.00 0.00 127.0.0.1 http/1.1
   servername.domain.de:80 GET /server-status HTTP/1.0
     __________________________________________________________________

Srv  Child Server number - generation
    PID  OS process ID
    Acc  Number of accesses this connection / this child / this slot
     M   Mode of operation
    CPU  CPU usage, number of seconds
    SS   Seconds since beginning of most recent request
    Req  Milliseconds required to process most recent request
    Dur  Sum of milliseconds required to process all requests
   Conn  Kilobytes transferred this connection
   Child Megabytes transferred this child
   Slot  Total megabytes transferred this slot
     __________________________________________________________________

mod_fcgid status:

Total FastCGI processes: 0
     __________________________________________________________________

SSL/TLS Session Cache Status:
   cache type: SHMCB, shared memory: 512000 bytes, current entries: 0
   subcaches: 32, indexes per subcache: 88
   index usage: 0%, cache usage: 0%
   total entries stored since starting: 0
   total entries replaced since starting: 0
   total entries expired since starting: 0
   total (pre-expiry) entries scrolled out of the cache: 0
   total retrieves since starting: 0 hit, 0 miss
   total removes since starting: 0 hit, 0 miss
     __________________________________________________________________

Apache/2.4.52 (Ubuntu) Server at localhost Port 80
$ lynx -dump -read_timeout=10 localhost/server-status

Looking up localhost
Making HTTP connection to localhost
Sending HTTP request.
HTTP request sent; waiting for response.
Alert!: Socket read failed (too many tries).
Connection interrupted.

lynx: Can't access startfile http://localhost/server-status
$ lynx -dump -read_timeout=10 localhost/server-status

Looking up localhost
Making HTTP connection to localhost
Sending HTTP request.
HTTP request sent; waiting for response.
Alert!: Socket read failed (too many tries).
Connection interrupted.

lynx: Can't access startfile http://localhost/server-status
$

Revision history for this message

Sergio Durigan Junior (sergiodj) wrote on 2022-09-01:

#3

Hmm, OK, for some reason the bug doesn't reproduce for me if I use a Jammy LXD container. I've just tried reproducing it using a VM and now I can trigger the error.

Thanks for the feedback. I'm marking this bug as Triaged and adding the server-todo tag; someone from the team should work on it soon (unless you would like to drive the SRU yourself, of course!).

Thanks.

tags:

added: server-todo

Revision history for this message

Sergio Durigan Junior (sergiodj) wrote on 2022-09-01:

#4

Instructions on how to reproduce:

$ lxc launch ubuntu:jammy test-apache2 --vm
$ lxc shell test-apache2
# apt update && apt dist-upgrade -y
# apt install apache2 lynx -y
# cat > /etc/apache2/mods-enabled/mpm_event.conf << __EOF__
<IfModule mpm_event_module>
    StartServers 1
    MinSpareThreads 1
    MaxSpareThreads 1
    ThreadsPerChild 1
    MaxRequestWorkers 1
    MaxConnectionsPerChild 1
</IfModule>
__EOF__
# systemctl restart apache2
# while lynx -dump -read_timeout=10 localhost/server-status; do continue; done
... This command should never return, but it will crash eventually ...

Changed in apache2 (Ubuntu Jammy):
status:	New → Triaged
importance:	Undecided → Medium
Changed in apache2 (Ubuntu):
status:	Incomplete → Fix Released

Sergio Durigan Junior (sergiodj) on 2022-09-07

Changed in apache2 (Ubuntu Jammy):
assignee:	nobody → Sergio Durigan Junior (sergiodj)

Bryce Harrington (bryce) on 2022-09-07

Changed in apache2 (Ubuntu Jammy):
assignee:	Sergio Durigan Junior (sergiodj) → Bryce Harrington (bryce)

Revision history for this message

Bryce Harrington (bryce) wrote on 2022-09-08:

#5

From the upstream bug report, do I understand correctly that the solution for this is these two changesets?

https://svn.apache.org/viewvc?view=revision&revision=1897149
https://svn.apache.org/viewvc?view=revision&revision=1901234

There are also some intervening merge changesets (r1901199 and r1898467) that each backport a bunch more revisions, but it looks like those are not required for this?

Also, it sounds like this doesn't affect focal or earlier, and is already fixed in kinetic's apache2, so we only need to SRU jammy, correct?

Bryce Harrington (bryce) on 2022-09-08

description:

updated

Bryce Harrington (bryce) on 2022-09-30

description:

updated

Bryce Harrington (bryce) on 2022-09-30

description:

updated

Revision history for this message

Daniel (danuntu) wrote on 2022-09-30:

#6

Yes, this affect only jammy. Kinetic's apache2 is version 2.4.54. The apache bug only affects version 2.4.52. The apache stucks almost every day on my shared web hosting machines.

Revision history for this message

Bryce Harrington (bryce) wrote on 2022-10-03:

#7

I've posted a PPA with the two patches here for testing:

https://launchpad.net/~bryce/+archive/ubuntu/apache2-sru-lp1988224/

One of the perl-framework tests failed but I've also pulled a fix for that from Debian.

description:

updated

Bryce Harrington (bryce) on 2022-10-04

Changed in apache2 (Ubuntu Jammy):
status:	Triaged → In Progress

Revision history for this message

Timo Aaltonen (tjaalton) wrote on 2022-10-17: Please test proposed package

#8

Hello Daniel, or anyone else affected,

Accepted apache2 into jammy-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/apache2/2.4.52-1ubuntu4.2 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-jammy to verification-done-jammy. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-jammy. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

Changed in apache2 (Ubuntu Jammy):
status:	In Progress → Fix Committed
tags:	added: verification-needed verification-needed-jammy

Revision history for this message

Ubuntu SRU Bot (ubuntu-sru-bot) wrote on 2022-10-17: Autopkgtest regression report (apache2/2.4.52-1ubuntu4.2)

#9

All autopkgtests for the newly accepted apache2 (2.4.52-1ubuntu4.2) for jammy have finished running.
The following regressions have been reported in tests triggered by the package:

gvfs/1.48.2-0ubuntu1 (arm64)
libsoup3/3.0.7-0ubuntu1 (armhf)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/jammy/update_excuses.html#apache2

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

Revision history for this message

Bryce Harrington (bryce) wrote on 2022-10-20:

#10

The referenced update_excuses.html page for jammy lists apache2 as "BLOCKED: Needs an approval" since 10-17. There's no indication about the two test issues mentioned in comment #9.

Fwiw, apache2 has always suffered from flaky autopkgtests, and it's almost certain that's what the gvfs and libsoup3 failures are. If anyone can, just retrigger the tests once or twice and they should go through. IIRC the flakiness can be caused by network/proxy issues particular to the hardware config of the testing machinery.

Revision history for this message

Sergio Durigan Junior (sergiodj) wrote on 2022-10-20: Re: [Bug 1988224] Re: apache stuck and child processes fail to start

#11

On Wednesday, October 19 2022, Bryce Harrington wrote:

> The referenced update_excuses.html page for jammy lists apache2 as
> "BLOCKED: Needs an approval" since 10-17. There's no indication about
> the two test issues mentioned in comment #9.
>
> Fwiw, apache2 has always suffered from flaky autopkgtests, and it's
> almost certain that's what the gvfs and libsoup3 failures are. If
> anyone can, just retrigger the tests once or twice and they should go
> through. IIRC the flakiness can be caused by network/proxy issues
> particular to the hardware config of the testing machinery.

I retriggered both failures earlier this week. Everything should be
ready for the package to migrate once the grace period is over.

Cheers,

--
Sergio
GPG key ID: E92F D0B3 6B14 F1F4 D8E0 EB2F 106D A1C8 C3CB BF14

Revision history for this message

Bryce Harrington (bryce) wrote on 2022-10-20:

#12

Ah thanks Sergio!

Revision history for this message

Bryce Harrington (bryce) wrote on 2022-11-10:

#13

Verified the fix works:

$ lxc launch ubuntu:jammy apache2-sru-lp1988224-jammy-2 --vm
Creating apache2-sru-lp1988224-jammy-2
Starting apache2-sru-lp1988224-jammy-2

$ lxc shell apache2-sru-lp1988224-jammy-2

# cat >> /etc/apt/sources.list << __EOF__
> deb http://archive.ubuntu.com/ubuntu jammy-proposed main universe
> __EOF__

root@apache2-sru-lp1988224-jammy-2:~# apt update && apt dist-upgrade -y
...
...

# apt update && apt dist-upgrade -y

# apt install apache2 lynx -y
...

# cat > /etc/apache2/mods-enabled/mpm_event.conf << __EOF__

<IfModule mpm_event_module>
    StartServers 1
    MinSpareThreads 1
    MaxSpareThreads 1
    ThreadsPerChild 1
    MaxRequestWorkers 1
    MaxConnectionsPerChild 1
</IfModule>
__EOF__

# systemctl restart apache2

# systemctl status apache2.service

# while lynx -dump -read_timeout=10 localhost/server-status; do continue; done

I left this to run for about half an hour, no problem.

tags:

added: verification-done verification-done-jammy
removed: verification-needed verification-needed-jammy

Revision history for this message

Launchpad Janitor (janitor) wrote on 2022-11-16:

#14

This bug was fixed in the package apache2 - 2.4.52-1ubuntu4.2

---------------
apache2 (2.4.52-1ubuntu4.2) jammy; urgency=medium

  * d/p/fix-a-possible-listener-deadlock.patch,
    d/p/handle-children-killed-pathologically.patch: Fix situation
    where Apache fails to start its child processes after a certain
    number of requests, causing requests for new pages to hang.
    (LP: #1988224)
  * d/perl-framework/t/ssl/ocsp.t: Update test framework
    - Cherry pick from Debian 2.4.53-1

-- Bryce Harrington <email address hidden> Thu, 29 Sep 2022 21:09:50 -0700

Changed in apache2 (Ubuntu Jammy):
status:	Fix Committed → Fix Released

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Brian Murray (brian-murray) wrote on 2022-11-16: Update Released

#15

The verification of the Stable Release Update for apache2 has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

Ubuntu
apache2 package

apache stuck and child processes fail to start

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Affects		Status	Importance	Assigned to	Milestone
	apache2 (Ubuntu)	Fix Released	Undecided	Unassigned
	Jammy	Fix Released	Medium	Bryce Harrington

Ubuntuapache2 package

apache stuck and child processes fail to start

Bug Description

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Ubuntu
apache2 package