Bug/Upgrade from crowdsec 1.1.1 -> 1.2.1 fails on Debian

[klausagnoletti]

Describe the bug On a clean install of Debian 10.11 I first installed crowdsec 1.1.1 and iptables bouncer 0.0.15 from debs. Next I upgraded. That failed because crowdsec failed to start after upgrade.

time="17-12-2021 17:27:22" level=error msg="failed to load pattern mysql.dpkg-dist : the pattern already exist"
time="17-12-2021 17:27:22" level=fatal msg="crowdsec init: Failed to load parsers: failed to load parser patterns : the pattern already exist"

This was in the logs. After deleting the mysql.dpkg-dist in /etc/crowdsec/patterns I was able to start the crowdsec agent and finish the upgrade.

To Reproduce Steps to reproduce the behavior:

1. Install Debian 10.11
2. Add package cloud repo
3. install crowdsec=1.1.1 and crowdsec-firewall-iptables=0.1.5
4. apt upgrade so latest version of both packages are installed

Expected behavior I expected upgrade to not fail :-)

Technical Information (please complete the following information):

• OS: Debian
• Version 10.11

[thib3113]

Go in /etc/crowdsec/parsers/, you will maybe got some patterns in double (and some with .dpkg-dist in the name)

[interzone2012]

Op vr 17 dec. 2021 21:44 schreef Thibaut SEVERAC @.***>:

Go in /etc/crowdsec/parsers/, you will maybe got some patterns in double (and some with .dpkg-dist in the name)

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[Athanasius]

I too encountered this. /etc/crowdsec/parsers contained no duplicates (checked with ls -alR in there).

TL;DR - Likely something to do with leapfrogging so many versions or the .dpkg file not ensuring it definitely updates all the relevant files to their latest versions.

In the end I:

1. backed up the two credentials files (I had no custom config, and all of /etc is under git anyway).
2. apt purge crowdsec
3. apt install crowdsec (which made new credentials files anyway)

and it worked. Now, I was coming from some ancient 1.0.2 version, because no hint was given that the APT repository had changed, so it's possible that necessary tweaks to configuration/other files were missed due to that leap.

I note that performing that upgrade did not change the files under /etc/crowdsec/parsers (which are of course symlinks) or the files those symlinks point to, but the purge/install cycle has. So something definitely went awry with the APT upgrade of the package.

I had /etc/ committed and in a clean state before the purge/install, but after the upgrade from 1.0.2 to 1.3.1. Now I've done the purge/install cycle I'm showing differences in, e.g. crowdsec/hub/parsers/s00-raw/crowdsecurity/syslog-logs.yaml in a git diff. I've now commited those changes, and for my own reference that's local /etc commit c165f4aea87d68f530dad5f285e85d5aa6bfba8.

[sabban]

Hi,

I believe this commit https://github.com/crowdsecurity/crowdsec/commit/1f06f242cc18ca99cc9f69164341592139f85d64 fixes this issue.

Regards,