[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-10-29 Thread Launchpad Bug Tracker
This bug was fixed in the package rabbitmq-server - 3.6.10-1ubuntu0.4

---
rabbitmq-server (3.6.10-1ubuntu0.4) bionic; urgency=medium

  * Improve systemd service file in order to avoid a 90-second hang
when restarting rabbitmq-server. (LP: #1784757) (Closes #902136)
- d/rabbitmq-server.service: Make sure the service starts after
  epmd.  Use "Type=notify" for the service.
- d/control: Depend on socat, which is needed for the communication
  between rabbitmq-server and systemd when "Type=notify" is used.

 -- Sergio Durigan Junior   Tue, 07 Jul
2020 10:26:18 -0400

** Changed in: rabbitmq-server (Ubuntu Bionic)
   Status: Fix Committed => Fix Released

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-10-29 Thread Sergio Durigan Junior
First, verifying that the current package fails:

root@bug1784757-rabbitmq-server:~# apt policy rabbitmq-server
rabbitmq-server:
  Installed: 3.6.10-1ubuntu0.3
  Candidate: 3.6.10-1ubuntu0.3
  Version table:
 *** 3.6.10-1ubuntu0.3 500
500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
100 /var/lib/dpkg/status
 3.6.10-1 500
500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
root@bug1784757-rabbitmq-server:~# time systemctl restart 
rabbitmq-server.service

real1m33.535s
user0m0.005s
sys 0m0.007s

Now, installing rabbitmq-server from -proposed, and verifying that the
bug is fixed:

root@bug1784757-rabbitmq-server:~# apt policy rabbitmq-server
rabbitmq-server:
  Installed: 3.6.10-1ubuntu0.4
  Candidate: 3.6.10-1ubuntu0.4
  Version table:
 *** 3.6.10-1ubuntu0.4 500
500 http://archive.ubuntu.com/ubuntu bionic-proposed/main amd64 Packages
100 /var/lib/dpkg/status
 3.6.10-1ubuntu0.3 500
500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
 3.6.10-1 500
500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
root@bug1784757-rabbitmq-server:~# for i in $(seq 10); do time systemctl 
restart rabbitmq-server.service ; done

real0m2.980s
user0m0.006s
sys 0m0.004s

real0m3.010s
user0m0.004s
sys 0m0.000s

real0m4.907s
user0m0.004s
sys 0m0.000s

real0m3.012s
user0m0.002s
sys 0m0.002s

real0m2.899s
user0m0.004s
sys 0m0.000s

real0m2.975s
user0m0.004s
sys 0m0.000s

real0m3.036s
user0m0.002s
sys 0m0.003s

real0m3.013s
user0m0.004s
sys 0m0.000s

real0m3.003s
user0m0.004s
sys 0m0.000s

real0m3.040s
user0m0.004s
sys 0m0.000s

Therefore, I'm marking this bug as verified.

** Tags removed: verification-needed-bionic
** Tags added: verification-done-bionic

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-07-28 Thread Brian Murray
Hello Ivan, or anyone else affected,

Accepted rabbitmq-server into bionic-proposed. The package will build
now and be available at https://launchpad.net/ubuntu/+source/rabbitmq-
server/3.6.10-1ubuntu0.4 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-
bionic to verification-done-bionic. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-bionic. 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: rabbitmq-server (Ubuntu Bionic)
   Status: Triaged => Fix Committed

** Tags added: verification-needed verification-needed-bionic

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-07-13 Thread Sergio Durigan Junior
** Description changed:

  [Impact]
- TBD
+ 
+ The systemd file rabbitmq-server.service on Bionic uses "Type=simple"
+ when defining the service, but unfortunately this doesn't work very well
+ for rabbitmq-server. In certain situations, systemd will fail to keep
+ track of a start/stop/restart event, and will hang for 90 seconds before
+ giving the prompt back to the user. Another problem is that rabbitmq-
+ server must start after the epmd service, so we need to explicitly
+ declare this dependency in the service file.
  
  [Test Case]
- TBD
+ 
+ Although I was able to reproduce this almost 100% of the time, there
+ were rare occasions when the restart procedure finished normally. I was
+ also only able to reproduce it using a bionic VM, not a container. If
+ you have multipass or lxd configured to launch VMs, that should be easy.
+ 
+ The steps are:
+ 
+ $ lxc launch ubuntu-daily:bionic --vm bug1784757-rabbitmq-server # or use 
multipass
+ $ lxc shell bug1784757-rabbitmq-server
+ # apt update
+ # apt install rabbitmq-server -y
+ # systemctl restart rabbitmq-server.service
+ 
+ In a normal scenario, the restart should take around 3 seconds or less.
+ With the bug, it takes around 90 seconds. If you can't reproduce it, try
+ running "systemctl restart" again. A quick way to trigger it is to run a
+ for loop like:
+ 
+ # for i in $(seq 10); do time systemctl restart rabbitmq-server.service
+ ; done
  
  [Regression Potential]
- TBD
  
- [Fix]
- TBD
+ * Because rabbitmq-server implements systemd's "Type=notify" using socat
+ to communicate with systemd-notify over a socket, we will be introducing
+ another point of failure (socat) in the mix.
  
- The fix is available upstream in Debian as of 3.7.6, so would need
- backported for bionic and cosmic:
- 
-  rabbitmq-server | 3.5.7-1| xenial  | source, all
-  rabbitmq-server | 3.6.10-1   | bionic  | source, all
-  rabbitmq-server | 3.6.10-1   | cosmic  | source, all
-  rabbitmq-server | 3.7.8-4ubuntu2 | disco   | source, all
-  rabbitmq-server | 3.7.8-4ubuntu2 | eoan| source, all
- 
- [Discussion]
- TBD
+ * So, albeit unlikely, there may be a problem when using socat.  That
+ would not be a regression, though, since the outcome would be the same
+ as we have today: "systemctl restart" would not properly work, even
+ though the service did restart.
  
  [Original Report]
- When I run `systemctl restart rabbitmq-server` it waits for 90 seconds then 
systemd sends SIGKILL to it.
+ 
+ When I run `systemctl restart rabbitmq-server` it waits for 90 seconds
+ then systemd sends SIGKILL to it.
  
  Presumably the `epmd` process does not receive SIGTERM, since if I run
  `kill 1493` (or whatever pid it currently is) then restart happens
  straight after that successfully
  
  ● rabbitmq-server.service - RabbitMQ Messaging Server
     Loaded: loaded (/lib/systemd/system/rabbitmq-server.service; enabled; 
vendor preset: enabled)
     Active: deactivating (final-sigterm) since Wed 2018-08-01 01:17:04 UTC; 7s 
ago
    Process: 1183 ExecStop=/usr/sbin/rabbitmqctl stop (code=exited, 
status=0/SUCCESS)
    Process: 178 ExecStartPost=/usr/lib/rabbitmq/bin/rabbitmq-server-wait 
(code=exited, status=0/SUCCESS)
    Process: 177 ExecStart=/usr/sbin/rabbitmq-server (code=killed, signal=TERM)
   Main PID: 177 (code=killed, signal=TERM)
  Tasks: 1 (limit: 4915)
     CGroup: /system.slice/rabbitmq-server.service
     └─1493 /usr/lib/erlang/erts-9.2/bin/epmd -daemon
  
  Aug 01 01:11:20 rmq-1 systemd[1]: rabbitmq-server.service: Failed to reset 
devices.list: Operation not permitted
  Aug 01 01:11:20 rmq-1 systemd[1]: Starting RabbitMQ Messaging Server...
  Aug 01 01:11:25 rmq-1 rabbitmq[178]: Waiting for 'rabbit@rmq-1'
  Aug 01 01:11:25 rmq-1 rabbitmq[178]: pid is 204
  Aug 01 01:11:30 rmq-1 systemd[1]: Started RabbitMQ Messaging Server.
  Aug 01 01:17:04 rmq-1 systemd[1]: Stopping RabbitMQ Messaging Server...
  Aug 01 01:17:06 rmq-1 rabbitmq[1183]: Stopping and halting node 'rabbit@rmq-1'

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-07-13 Thread Sergio Durigan Junior
** Changed in: rabbitmq-server (Ubuntu Bionic)
 Assignee: (unassigned) => Sergio Durigan Junior (sergiodj)

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-07-09 Thread Launchpad Bug Tracker
** Merge proposal linked:
   
https://code.launchpad.net/~sergiodj/ubuntu/+source/rabbitmq-server/+git/rabbitmq-server/+merge/387177

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Re: [Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-07-07 Thread Sergio Durigan Junior
On Tuesday, July 07 2020, Dan Streetman wrote:

> adding @nicolasbock and @mruffell for their awareness, as rabbitmq-
> server is in x/b/f-proposed for bug 1874075 currently; hopefully that
> bug can be verified this week so it can be released at the 7-day aging
> period next monday, to clear the way for this one (normally i'd suggest
> just re-uploading with the fixes for this to release them together, but
> bug 1874075 has been going for a while so it should probably go out
> asap)

Thanks, Dan.

I have the fix ready for this bug, by the way.  If you're interested,
you can take a look at it here:

  https://code.launchpad.net/~sergiodj/ubuntu/+source/rabbitmq-
server/+git/rabbitmq-server/+ref/bug1784757-fix-server-restart-hang

I'll wait until the package enters -update before I resume the SRU
process.

Cheers,

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

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-07-07 Thread Dan Streetman
adding @nicolasbock and @mruffell for their awareness, as rabbitmq-
server is in x/b/f-proposed for bug 1874075 currently; hopefully that
bug can be verified this week so it can be released at the 7-day aging
period next monday, to clear the way for this one (normally i'd suggest
just re-uploading with the fixes for this to release them together, but
bug 1874075 has been going for a while so it should probably go out
asap)

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Title:
  [SRU] rabbitmq-server does not properly shutdown

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-07-06 Thread Launchpad Bug Tracker
** Merge proposal linked:
   
https://code.launchpad.net/~sergiodj/ubuntu/+source/rabbitmq-server/+git/rabbitmq-server/+merge/386905

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  [SRU] rabbitmq-server does not properly shutdown

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-07-03 Thread Sergio Durigan Junior
I was able to reproduce this bug when using a bionic VM.  I didn't have
to go through all the steps from comment #13, but I also noticed that
the bug doesn't manifest all the time; sometimes, a "systemct restart
rabbitmq-server" will take just 1 or 2 seconds.  However, I was able to
reproduce the issue in one out of every two attempts.  I'm preparing the
fix now.

** Changed in: rabbitmq-server (Ubuntu Bionic)
   Status: Incomplete => Triaged

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-07-02 Thread Sergio Durigan Junior
I'm looking at this bug now.

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2020-07-02 Thread Sergio Durigan Junior
** Changed in: rabbitmq-server (Ubuntu Cosmic)
   Status: Triaged => Won't Fix

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2019-07-19 Thread carl2187
# forgot to include the shutdown changes, so here's a full procedure to
fix this in Bionic:

sudo nano /lib/systemd/system/rabbitmq-server.service

# fixup the [Unit] entry to look like this:
[Unit]
Description=RabbitMQ Messaging Server
After=network.target epmd@0.0.0.0.socket
Wants=network.target epmd@0.0.0.0.socket

# change just the ExecStop under [Service] to use "shutdown" instead of "stop":
ExecStop=/usr/sbin/rabbitmqctl shutdown

# reload and reboot:
sudo systemctl stop rabbitmq-server.service
sudo systemctl daemon-reload
sudo systemctl restart rabbitmq-server.service
sudo shutdown -r now

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2019-07-19 Thread carl2187
# my method to fix the problem in Bionic for now is simple, borrowing
from the upstream Debian patch:

sudo nano /lib/systemd/system/rabbitmq-server.service

# make the [Unit] definition look like this:
[Unit]
Description=RabbitMQ Messaging Server
After=network.target epmd@0.0.0.0.socket
Wants=network.target epmd@0.0.0.0.socket

# then reload and reboot, no more delay at Rabbitmq
sudo systemctl daemon-reload
sudo systemctl restart rabbitmq-server.service

sudo shutdown -r now

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2019-07-19 Thread carl2187
# I run into this problem reliably in Bionic following this process, (as
of 7/19/2019, this process caused the bug to manifest)

# Clean install ubuntu server 18.04.2 (using traditional installer media, not 
live media)
# (installing into a gen2 Hyper-V VM running on Windows 10 1903)

# after install and first reboot, patch it up all the way:

sudo apt update
sudo apt full-upgrade

sudo shutdown -r now

sudo apt install -y apt-transport-https locales software-properties-
common curl

# setup repo for nodejs version 8.x:
curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -

sudo apt install -y fonts-noto nodejs git supervisor nginx ssl-cert
postgresql adduser redis-server rabbitmq-server libstdc++6 libxml2
libboost-regex-dev zlib1g fonts-dejavu fonts-liberation ttf-mscorefonts-
installer fonts-crosextra-carlito fonts-takao-gothic fonts-opensymbol
libxss1 libcairo2 xvfb libxtst6 libgconf2-4 libasound2

sudo shutdown -r now

# on this reboot after Rabitmq-server has been installed (along with all
that other junk) then the bug manifests reliably in bionic.

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2019-07-08 Thread Bryce Harrington
I'm still not able to reproduce the error.

If you can provide an exact set of steps to run in an lxc container it'd
help a lot.  Here's what I've got so far:

```
$ lxc launch ubuntu:bionic bionic-lp-1784757
Creating bionic-lp-1784757
Starting bionic-lp-1784757
trent:~/ubuntu/RabbitmqServer/sru.1784757$ lxc exec bionic-lp-1784757 -- bash
root@bionic-lp-1784757:~# apt update
Hit:1 http://archive.ubuntu.com/ubuntu bionic InRelease
(...)
root@bionic-lp-1784757:~# ps aux | grep ^rabbit
rabbitmq  1390  0.0  0.0   4628   868 ?Ss   01:30   0:00 /bin/sh 
/usr/sbin/rabbitmq-server
rabbitmq  1403  0.0  0.0   4628  1844 ?S01:30   0:00 /bin/sh 
/usr/lib/rabbitmq/bin/rabbitmq-server
rabbitmq  1553  0.0  0.0  26852   204 ?S01:30   0:00 
/usr/lib/erlang/erts-9.2/bin/epmd -daemon
rabbitmq  1684  0.0  0.1 4291312 62276 ?   Sl   01:30   0:02 
/usr/lib/erlang/erts-9.2/bin/beam.smp -W w -A 96 -P 1048576 (...)
rabbitmq  1834  0.0  0.0   4520   804 ?Ss   01:30   0:00 
erl_child_setup 65536
rabbitmq  1913  0.0  0.0   8264  1128 ?Ss   01:30   0:00 inet_gethost 4
rabbitmq  1914  0.0  0.0  14616  1888 ?S01:30   0:00 inet_gethost 4
root@bionic-lp-1784757:~# sudo time --format %E systemctl stop 
rabbitmq-server.service
0:00.88
```

I've also experimented with having epmd started or stopped, in various
order with the start/stop of rabbitmq-server, but it always takes only a
second or two to start or stop.  Debian's changes suggest that the bug
is some interrelationship with epmd, but it's unclear from the patch
what exactly that is.

Are there any config settings, architecture specificness, or other
considerations that need taken into account?

** Changed in: rabbitmq-server (Ubuntu Bionic)
   Status: Triaged => Incomplete

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2019-07-05 Thread Bug Watch Updater
** Changed in: rabbitmq-server (Debian)
   Status: Unknown => Fix Released

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[Bug 1784757] Re: [SRU] rabbitmq-server does not properly shutdown

2019-07-05 Thread Bryce Harrington
** Bug watch added: Debian Bug tracker #812342
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=812342

** Also affects: rabbitmq-server (Debian) via
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=812342
   Importance: Unknown
   Status: Unknown

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