Filter to exclude hosts/services that are member of a specific group

[peng42]

Hi,

I couldn't find any doc or issue on this subject, please apology if already answered out somewhere.

Thanks a lot for all the work !

Expected Behavior

When using filters on hostgroups, hosts being member of more than one hostgroup :
When filtering out a hostgroup (eg : "hostgroup_name!=foo"), hosts matching this hostgroup (even if member of other hostgroups) should not be displayed.

Current Behavior

If host a is member of hostgroup foo AND hostgroup bar, using filter "hostgroup_name!=foo", host a is still displayed.
If host a is member of hostgroup foo and no other hostgroup, filtering works as expected.

Context

I couldn't find any other way to display strictly "all hosts but hosts which are member of group foo".
Encountered both in views (eg: /icingaweb2/monitoring/list/services?service_problem=1&hostgroup!=foo) and roles permissions (see documentation: 06-security).

Your Environment

• Icinga Web 2 version: 2.4.1
• Modules used: doc (2.4.1), monitoring (2.4.1), pnp (1.0.1)
• Icinga2 version used: r2.6.0-1
• Operating System and version: debian stretch (9.0), linux 4.9.0-2-amd64
• Enabled features: checker command ido-mysql mainlog notification perfdata

[lippserd]

Hi,

Thanks for the report. Unfortunately excluding hosts with such a filter is not possible yet and somehow related to #1649. I can't tell you when this issue is going to be scheduled.

Best regards,
Eric

[nilmerg]

It's now scheduled for the next major release v2.6.0.

The issues we're looking at here are the following:

1. Any amount of unequal comparisons to linked objects (e.g. list/hosts?hostgroup_name!=foo as well as list/hosts?hostgroup_name!=foo&service_description!=bar) return unwanted/wrong results.
2. Multiple equal comparisons to linked objects (e.g. list/hosts?hostgroup_name=foo&hostgroup_name=bar) return no results at all. (See [dev.icinga.com #9241] Filter hosts and services by combined group memberships, e.g. servicegroup=(a&b) #1649)

Once this issue is resolved the following will change:

1. Such a comparison returns less results. (i.e. No hosts which are a member of any hostgroup besides foo (while being a member of foo) and no hosts which have any other service other than bar (while having one named bar))
2. This does return results. (i.e. All hosts which are a member of the hostgroups foo and bar)

Note that 1) is a breaking change. While the results are clearly wrong there are still results returned on which some may rely upon. This needs to be clearly mentioned in the release notes.