Web site not available after do-release-upgrade

Troubleshooting
1

Runing Check MK RAW 2.0p7 on Ubuntu 18.04.
After upgrading Ubuntu to 20.04 the check mk web site is not found.

The requested URL was not found on this server.

I guess this is something with the Apache2 config?
How can I get it working?

I followed this instructions to upgrade. This has worked before.

2

It is only that the web interface is not reachable or?
“omd status” gives all services as started?

3

Yes all other services is running fine:

omd status
Doing ‘status’ on site master:
mkeventd: running
rrdcached: running
npcd: running
nagios: running
apache: running
redis: running
xinetd: running
crontab: running

Overall state: running

4

Ok then the system Apache has a problem, any error messages inside the system Apache log files?
You can also test with a curl to the localhost with the port of you site Apache if you get the login page as anwser.

5

I cannot see anything that looks strang except the 404 error (page not found).

/var/log/apache2/error.log:
[Sun Jul 11 17:56:19.728611 2021] [mpm_event:notice] [pid 1229:tid 139747090185280] AH00489: Apache/2.4.41 (Ubuntu) configured – resuming normal >
[Sun Jul 11 17:56:19.730573 2021] [core:notice] [pid 1229:tid 139747090185280] AH00094: Command line: ‘/usr/sbin/apache2’

/var/log/apache2/access.log:
x.x.x.x - - [11/Jul/2021:18:04:01 +0200] “GET /master/check_mk HTTP/1.1” 404 487 “-” "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.>

6

I cannot find where apache2 points to check_mk web site. Where should that be configured?

7

Inside your “/etc/apache2/conf-enabled/” there should be a link to the “zzz_omd.conf” inside “conf-available”.
This config file is very basic and can be created of not there.

content of “zzz_omd.conf”


Include /omd/apache/*.conf
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8

How did you upgrade?

Upgrading the distribution means to deinstall checkmk first and then afterwards install the matching checkmk for the new distribution version.

9

I did the upgrade by following this:

10

I think the small Apache config file is missing or it has a problem loading the site configs.

11

Thank you very much Andreas, that was it!

I did the following and that worked:

cd /etc/apache2/conf-enabled
ln -s /etc/apache2/conf-available/zzz_omd.conf zzz_omd.conf
service apache2 restart

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12

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