Activate changes: Permission denied error

Owned by Anastasios Thomaidis
Last updated: Oct 14, 2024 by Matthew Hierholzer
1 min read

Receiving permission denied error while activating changes.

LAST TESTED ON CHECKMK 2.3.0P1

Table of Contents

Problem

After an omd copy/move from the command line or the Checkmk appliance, you may be unable to activate changes due to this error:


The above snip is just to exemplify the "Permission denied:" problem. The below excerpt is from a different host, but the problem is similar ("Permission denied:").


In this case, the error was caused by some wrong permissions:

OMD[mysiteNEW]:~/var/agent-receiver/received-outputs$ ls -ltr
total 320
lrwxrwxrwx 1 mysiteOLD mysiteOLD 69 Nov 25 11:31 3e03abe9-7cee-4b65-bd00-aacc64114248 -> /omd/sites/mysiteOLD/tmp/check_mk/data_source_cache/push-agent/host1
lrwxrwxrwx 1 mysiteOLD mysiteOLD 69 Nov 25 11:31 381bd3f2-2250-42d3-aafc-afed3eda708d -> /omd/sites/mysiteOLD/tmp/check_mk/data_source_cache/push-agent/host2
lrwxrwxrwx 1 mysiteOLD mysiteOLD 69 Nov 25 11:31 33f0b013-6a53-4bbb-ba44-15750b09c43e -> /omd/sites/mysiteOLD/tmp/check_mk/data_source_cache/push-agent/host3
lrwxrwxrwx 1 mysiteOLD mysiteOLD 68 Nov 25 11:31 32e8c449-d31d-4db6-a6cc-2f61e57d74a2 -> /omd/sites/mysiteOLD/tmp/check_mk/data_source_cache/push-agent/host4
lrwxrwxrwx 1 mysiteOLD mysiteOLD 69 Nov 25 11:31 3257d465-5737-4e25-9e42-0d8792992ad7 -> /omd/sites/mysiteOLD/tmp/check_mk/data_source_cache/push-agent/host5
lrwxrwxrwx 1 mysiteOLD mysiteOLD 73 Nov 25 11:31 3157b60f-5ad1-4c4e-b1c3-d132da075f96 -> /omd/sites/mysiteOLD/tmp/check_mk/data_source_cache/push-agent/host6

The below files should be owned by the user and group mysiteNEW, not mysiteOLD.


Below, we will fix this.

Solution

If your site is equal to or higher than 2.1

  • The encountered problem is covered in Werk #13312.

  • Since the error is generated by the fact that some files inside the checkmk site are not owned by the site user, you can use find to identify all the existing files with wrong permissions

  • Execute the following command as root:

    find /omd/sites/mysiteNEW -not -user mysiteNEW

  • Depending on your findings, you can change the permissions of the files, like this:

    chown mysiteNEW:mysiteNEW /omd/sites/mysiteOLD/tmp/check_mk/data_source_cache/push-agent/host1


    Repeat for all of the hosts that were moved to the new site, or use a wildcard:

    chown mysiteNEW:mysiteNEW /omd/sites/mysiteOLD/tmp/check_mk/data_source_cache/push-agent/host*