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syslog-ng constantly crashing #6118

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CouponCodeSwap opened this issue Oct 19, 2024 · 15 comments
Open
5 tasks done

syslog-ng constantly crashing #6118

CouponCodeSwap opened this issue Oct 19, 2024 · 15 comments
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@CouponCodeSwap
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  • ... I have verified that my issue has not been already answered in the past. I also checked previous issues.

Description

This is a report in regards to the following issue reported by @chriscroome that was closed:

https://github.com/mailcow/mailcow-dockerized/issues/5932

I rolled back to version 2024-06a using git and the problem has disappeared. This definitely seems to be a bug. All of the syslog-ng errors are gone and I don't have to hack the dovecot.conf file to disable syslog-ng logging in order for mailcow to be usable. One problem is that the correct version isn't displayed after I log in, it still shows 2024-08a. Is there somewhere I can manually set the version back to 2024-06a so it matches the git rollback?

Anyhow, I would like to be running the latest version and it seems fairly certain that something was introduced in one of the releases after 2024-06a that are causing this bug.

Logs:

dovecot-mailcow-1 | 2024-07-19 17:37:33,702 WARN exited: syslog-ng (terminated by SIGILL (core dumped); not expected)
dovecot-mailcow-1 | 2024-07-19 17:37:34,924 WARN received SIGQUIT indicating exit request
dovecot-mailcow-1 | 2024-07-19 17:37:35,926 WARN stopped: syslog-ng (terminated by SIGILL (core dumped))
dovecot-mailcow-1 | 2024-07-19 17:37:37,932 WARN stopped: processes (terminated by SIGTERM)
dovecot-mailcow-1 | 2024-07-19 17:37:46,310 WARN exited: syslog-ng (terminated by SIGILL (core dumped); not expected)
dovecot-mailcow-1 | 2024-07-19 17:37:47,324 WARN received SIGQUIT indicating exit request
dovecot-mailcow-1 | 2024-07-19 17:37:48,406 WARN stopped: syslog-ng (terminated by SIGILL (core dumped))
dovecot-mailcow-1 | 2024-07-19 17:37:49,519 WARN stopped: processes (terminated by SIGTERM)
dovecot-mailcow-1 | 2024-07-19 17:37:55,808 WARN exited: syslog-ng (terminated by SIGILL (core dumped); not expected)
dovecot-mailcow-1 | 2024-07-19 18:37:57,264 WARN exited: syslog-ng (terminated by SIGILL (core dumped); not expected)
dovecot-mailcow-1 | 2024-07-19 18:37:58,534 WARN received SIGQUIT indicating exit request
dovecot-mailcow-1 | 2024-07-19 18:37:59,537 WARN stopped: syslog-ng (terminated by SIGILL (core dumped))
dovecot-mailcow-1 | 2024-07-19 18:38:01,542 WARN stopped: processes (terminated by SIGTERM)
dovecot-mailcow-1 | 2024-07-19 18:38:12,256 WARN exited: syslog-ng (terminated by SIGILL (core dumped); not expected)
dovecot-mailcow-1 | 2024-07-19 18:38:13,344 WARN exited: syslog-ng (terminated by SIGILL (core dumped); not expected)
dovecot-mailcow-1 | 2024-07-19 18:38:16,438 WARN exited: syslog-ng (terminated by SIGILL (core dumped); not expected)
dovecot-mailcow-1 | 2024-07-19 18:38:17,451 WARN received SIGQUIT indicating exit request
dovecot-mailcow-1 | 2024-07-19 18:38:17,520 WARN stopped: syslog-ng (terminated by SIGILL (core dumped))
dovecot-mailcow-1 | 2024-07-19 18:38:18,633 WARN stopped: processes (terminated by SIGTERM)

Steps to reproduce:

Update mailcow from 2024-6a to newer version.
Try to use mailcow like usual.
Observe constant syslog-ng crashes that make mailcow unusable.

Which branch are you using?

master

Which architecture are you using?

x86

Operating System:

Debian GNU/Linux 12 (bookworm)

Server/VM specifications:

6GB RAM, 4 CPU cores

Is Apparmor, SELinux or similar active?

yes

Virtualization technology:

Xen

Docker version:

27.3.1, build ce12230

docker-compose version or docker compose version:

v2.29.0

mailcow version:

2024-08a

Reverse proxy:

none

Logs of git diff:

Too long, not able to submit issue. I will post separately if requested.

"There was an error creating your issue: body is too long, body is too long (maximum is 65536 characters)."

Logs of iptables -L -vn:

Too long, not able to submit issue. I will post separately if requested.

"There was an error creating your issue: body is too long, body is too long (maximum is 65536 characters)."

Logs of ip6tables -L -vn:

Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
 5083  371K MAILCOW    0    --  *      *       ::/0                 ::/0                 /* mailcow */
   85 14924 f2b-sshd   6    --  *      *       ::/0                 ::/0                 multiport dports 22

Chain FORWARD (policy DROP 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
 1539  369K MAILCOW    0    --  *      *       ::/0                 ::/0                 /* mailcow */
 1539  369K DOCKER-USER  0    --  *      *       ::/0                 ::/0                
 1539  369K DOCKER-ISOLATION-STAGE-1  0    --  *      *       ::/0                 ::/0                
  756  272K ACCEPT     0    --  *      br-mailcow  ::/0                 ::/0                 ctstate RELATED,ESTABLISHED
    2   160 DOCKER     0    --  *      br-mailcow  ::/0                 ::/0                
  781 96523 ACCEPT     0    --  br-mailcow !br-mailcow  ::/0                 ::/0                
    0     0 ACCEPT     0    --  br-mailcow br-mailcow  ::/0                 ::/0                
    0     0 ACCEPT     0    --  *      docker0  ::/0                 ::/0                 ctstate RELATED,ESTABLISHED
    0     0 DOCKER     0    --  *      docker0  ::/0                 ::/0                
    0     0 ACCEPT     0    --  docker0 !docker0  ::/0                 ::/0                
    0     0 ACCEPT     0    --  docker0 docker0  ::/0                 ::/0                

Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain DOCKER (2 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 ACCEPT     6    --  !br-mailcow br-mailcow  ::/0                 fd4d:6169:6c63:6f77::b  tcp dpt:110
    0     0 ACCEPT     6    --  !br-mailcow br-mailcow  ::/0                 fd4d:6169:6c63:6f77::b  tcp dpt:143
    0     0 ACCEPT     6    --  !br-mailcow br-mailcow  ::/0                 fd4d:6169:6c63:6f77::b  tcp dpt:993
    0     0 ACCEPT     6    --  !br-mailcow br-mailcow  ::/0                 fd4d:6169:6c63:6f77::b  tcp dpt:995
    0     0 ACCEPT     6    --  !br-mailcow br-mailcow  ::/0                 fd4d:6169:6c63:6f77::b  tcp dpt:4190
    0     0 ACCEPT     6    --  !br-mailcow br-mailcow  ::/0                 fd4d:6169:6c63:6f77::c  tcp dpt:80
    2   160 ACCEPT     6    --  !br-mailcow br-mailcow  ::/0                 fd4d:6169:6c63:6f77::c  tcp dpt:443
    0     0 ACCEPT     6    --  !br-mailcow br-mailcow  ::/0                 fd4d:6169:6c63:6f77::f  tcp dpt:25
    0     0 ACCEPT     6    --  !br-mailcow br-mailcow  ::/0                 fd4d:6169:6c63:6f77::f  tcp dpt:465
    0     0 ACCEPT     6    --  !br-mailcow br-mailcow  ::/0                 fd4d:6169:6c63:6f77::f  tcp dpt:587

Chain DOCKER-ISOLATION-STAGE-1 (1 references)
 pkts bytes target     prot opt in     out     source               destination         
  781 96523 DOCKER-ISOLATION-STAGE-2  0    --  br-mailcow !br-mailcow  ::/0                 ::/0                
    0     0 DOCKER-ISOLATION-STAGE-2  0    --  docker0 !docker0  ::/0                 ::/0                
86659   26M RETURN     0    --  *      *       ::/0                 ::/0                

Chain DOCKER-ISOLATION-STAGE-2 (2 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DROP       0    --  *      br-mailcow  ::/0                 ::/0                
    0     0 DROP       0    --  *      docker0  ::/0                 ::/0                
42583   18M RETURN     0    --  *      *       ::/0                 ::/0                

Chain DOCKER-USER (1 references)
 pkts bytes target     prot opt in     out     source               destination         
86659   26M RETURN     0    --  *      *       ::/0                 ::/0                

Chain MAILCOW (2 references)
 pkts bytes target     prot opt in     out     source               destination         

Chain f2b-sshd (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 REJECT     0    --  *      *       2a01:799:293:ed00:fe4d:d4ff:fed3:57d3  ::/0                 reject-with icmp6-port-unreachable
   85 14924 RETURN     0    --  *      *       ::/0                 ::/0

Logs of iptables -L -vn -t nat:

Too long, not able to submit issue. I will post separately if requested.

"There was an error creating your issue: body is too long, body is too long (maximum is 65536 characters)."

Logs of ip6tables -L -vn -t nat:

Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
  610 45364 DOCKER     0    --  *      *       ::/0                 ::/0                 ADDRTYPE match dst-type LOCAL

Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DOCKER     0    --  *      *       ::/0                !::1                  ADDRTYPE match dst-type LOCAL

Chain POSTROUTING (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         
  759 71258 MASQUERADE  0    --  *      !br-mailcow  fd4d:6169:6c63:6f77::/64  ::/0                
    0     0 MASQUERADE  0    --  *      !docker0  fd00:dead:beef:c0::/80  ::/0                
    0     0 MASQUERADE  6    --  *      *       fd4d:6169:6c63:6f77::b  fd4d:6169:6c63:6f77::b  tcp dpt:110
    0     0 MASQUERADE  6    --  *      *       fd4d:6169:6c63:6f77::b  fd4d:6169:6c63:6f77::b  tcp dpt:143
    0     0 MASQUERADE  6    --  *      *       fd4d:6169:6c63:6f77::b  fd4d:6169:6c63:6f77::b  tcp dpt:993
    0     0 MASQUERADE  6    --  *      *       fd4d:6169:6c63:6f77::b  fd4d:6169:6c63:6f77::b  tcp dpt:995
    0     0 MASQUERADE  6    --  *      *       fd4d:6169:6c63:6f77::b  fd4d:6169:6c63:6f77::b  tcp dpt:4190
    0     0 MASQUERADE  6    --  *      *       fd4d:6169:6c63:6f77::c  fd4d:6169:6c63:6f77::c  tcp dpt:80
    0     0 MASQUERADE  6    --  *      *       fd4d:6169:6c63:6f77::c  fd4d:6169:6c63:6f77::c  tcp dpt:443
    0     0 MASQUERADE  6    --  *      *       fd4d:6169:6c63:6f77::f  fd4d:6169:6c63:6f77::f  tcp dpt:25
    0     0 MASQUERADE  6    --  *      *       fd4d:6169:6c63:6f77::f  fd4d:6169:6c63:6f77::f  tcp dpt:465
    0     0 MASQUERADE  6    --  *      *       fd4d:6169:6c63:6f77::f  fd4d:6169:6c63:6f77::f  tcp dpt:587

Chain DOCKER (2 references)
 pkts bytes target     prot opt in     out     source               destination         
   23  1840 RETURN     0    --  br-mailcow *       ::/0                 ::/0                
    0     0 RETURN     0    --  docker0 *       ::/0                 ::/0                
    0     0 DNAT       6    --  !br-mailcow *       ::/0                 ::/0                 tcp dpt:110 to:[fd4d:6169:6c63:6f77::b]:110
    0     0 DNAT       6    --  !br-mailcow *       ::/0                 ::/0                 tcp dpt:143 to:[fd4d:6169:6c63:6f77::b]:143
    0     0 DNAT       6    --  !br-mailcow *       ::/0                 ::/0                 tcp dpt:993 to:[fd4d:6169:6c63:6f77::b]:993
    0     0 DNAT       6    --  !br-mailcow *       ::/0                 ::/0                 tcp dpt:995 to:[fd4d:6169:6c63:6f77::b]:995
    0     0 DNAT       6    --  !br-mailcow *       ::/0                 ::/0                 tcp dpt:4190 to:[fd4d:6169:6c63:6f77::b]:4190
    0     0 DNAT       6    --  !br-mailcow *       ::/0                 ::/0                 tcp dpt:80 to:[fd4d:6169:6c63:6f77::c]:80
    2   160 DNAT       6    --  !br-mailcow *       ::/0                 ::/0                 tcp dpt:443 to:[fd4d:6169:6c63:6f77::c]:443
    0     0 DNAT       6    --  !br-mailcow *       ::/0                 ::/0                 tcp dpt:25 to:[fd4d:6169:6c63:6f77::f]:25
    0     0 DNAT       6    --  !br-mailcow *       ::/0                 ::/0                 tcp dpt:465 to:[fd4d:6169:6c63:6f77::f]:465
    0     0 DNAT       6    --  !br-mailcow *       ::/0                 ::/0                 tcp dpt:587 to:[fd4d:6169:6c63:6f77::f]:587

DNS check:

104.18.32.7
172.64.155.249
@DerLinkman
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Any custom changes? Can not reproduce...

Do a git diff origin/master here pls

@DerLinkman
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There is no issue on our side with our testing systems. There is something broken on your machine or due to some custom changes you made i guess

@DerLinkman
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Hmm yes seems to be a issue with Xen Virtualized VMs, kvm VMs work fine.

Have to debug this but we might cut XEN Support if it is layered deeper down...

@DerLinkman DerLinkman mentioned this issue Oct 21, 2024
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@CouponCodeSwap

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@DerLinkman
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Dude please be a bit more structured.... don't paste any github prs here or what so ever.

Keep it clean and simple. No one can read that all

@CouponCodeSwap
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Apologies. Hitting the Markdown <> button causes the browser to hang bad but the Comment button is still functional. Will try attaching git-diff as txt file.
git-diff.txt

@CouponCodeSwap
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Another note that may be helpful pinpointing the problem: this server was incrementally upgraded from Debian 10 to 11 to 12 after Debian 12 was released. I wouldn't think that would be the cause of the issue since rolling back to 2024-06a works fine with the upgraded Debian but perhaps it is. @chriscroome

@DerLinkman
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Apologies. Hitting the Markdown <> button causes the browser to hang bad but the Comment button is still functional. Will try attaching git-diff as txt file. git-diff.txt

Thanks,

could not see any difference except version differences as you rollback to 2024-06a.

@CouponCodeSwap
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could not see any difference except version differences as you rollback to 2024-06a.

Thank you for looking into it. I was contemplating reinstalling OS, doing a fresh install of mailcow and then manually restoring from backups but that would be a major, time-consuming project because there are a lot of email accounts and settings to restore plus I also use the server for storage / backups and there are other things tied in that might break.

In your opinion, is it safe to assume that a fresh OS install and restore wouldn't fix the issue or is it worth a shot?

@DerLinkman
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I don't know... i cannot reproduce this error anywhere even on a older machine so i'm clueless here...

@CouponCodeSwap
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Is it possible to easily rollback only the dovecot container to the state it was in with the 2024-06c or 2024-06a (last known working version) release? If it is, I'd like to test doing that and if the issue persists, proceed one by one rolling back the other 3 containers that have sysleog-ng.

@DerLinkman
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Yeah you can change the dovecot image version to the version of the working version by using docker-compose.override.yml

@CouponCodeSwap
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Yeah you can change the dovecot image version to the version of the working version by using docker-compose.override.yml

Okay, I think I already tried that with dovecot. Will try again and continue with the other containers as well.

@CouponCodeSwap
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mailcow/dovecot:1.28.2 = working
mailcow/dovecot:1.30 = broken

Surprisingly the issue is introduced with 1.30, I thought it would begin with the full version update to 2.0.

@DerLinkman
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Versioning has nothing to say. We've retagged the images as we overwrote some older tags with that numbering.

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