Checkmk werks level1 November 2022

checkmk-werks-lvl1@lists.checkmk.com

27 participants
96 discussions

Checkmk Werk 14827: Re-work agent plugin for monitoring SSH daemon configuration

by Joerg Herbel

ID: 14827 Title: Re-work agent plugin for monitoring SSH daemon configuration Component: Checks & agents Level: 1 Class: Bug fix Version: 2.2.0i1 The agent plugin for monitoring the SSH daemon configuration (<tt>mk_sshd_config</tt>) has been re-worked. The previous version of the plugin used the contents of <tt>/etc/ssh/sshd_config</tt> to monitor the daemon configuration. This is problematic in multiple ways: LI: Include directives, such as <tt>Include /etc/ssh/sshd_config.d/*.conf</tt>, are not taken into account, resulting in potentially wrong monitoring results. LI: Match directives are evaluated incorrectly, leading to monitoring results such as "PasswordAuthentication: noyes". LI: Defaults are not taken into account properly. For example, under Ubuntu, the default is that password authentication is enabled if not explictly configured differently. The re-worked version of the agent plugin reports the effective daemon configuration queried via <tt>sshd -T</tt>. This evaluates include directives and takes into daemon defaults, but does explicitly not evaluate Match directives. Hence, as an example, even if Checkmk reports that password authentication is off, this does not garantuee that no user can ssh into the system using a password. This werk is marked as incompatible for two reasons: LI: The behavioural changes listed above. LI: <tt>sshd -T</tt> will likely require root permissions to execute successfully. Hence, the new version of the plugin will likely not work on systems where the agent is executed as non-root. Finally, note that the configuration option <tt>ChallengeResponseAuthentication</tt> is deprecated and has been replaced with <tt>KbdInteractiveAuthentication</tt>. If configured to monitor this option, Checkmk now checks for both keys and only alerts if neither of the two is found.

1 year, 9 months

Checkmk Werk 14975: mk_postgres.py: correct UNIX socket not found when instances are configured

by Lisa Pichler

ID: 14975 Title: mk_postgres.py: correct UNIX socket not found when instances are configured Component: Checks & agents Level: 1 Class: Bug fix Version: 2.2.0i1 You are affected by this werk if you have configured one or more PostgreSQL instances that should be monitored by an agent plugin of Checkmk version > 1.6.0. This means that you are using the rule "Instances settings" in the ruleset "PostgreSQL database nd sessions (Linux, Windows)". In order to apply this fix, the agent plugin must be reinstalled on the host. When PostgreSQL instances are configured explicity via the respective .env and .pgpass config files, the agent plugin was no longer able to determine the correct "psql" binary to use in order to run SQL queries via the commandline. This lead to an error message similar to: <br> psql: error: connection to server on socket "/var/run/postgresql/.s.PGSQL.123" failed: No such file or directory <br> This has been fixed.

1 year, 9 months

Checkmk Werk 13967: "Topic" attribute for host tags is now optional in REST API

by Philipp Siegmantel

ID: 13967 Title: "Topic" attribute for host tags is now optional in REST API Component: REST API Level: 1 Class: Bug fix Version: 2.2.0i1 When creating a host tag group using the REST API, it is now optional to specify a topic. When reading a host tag group without a specifically set topic, it will be displayed as "Tags". This matches the behaviour of the GUI.

1 year, 9 months

Checkmk Werk 13968: Unknown sites in host_config endpoints will now be marked as such

by Philipp Siegmantel

ID: 13968 Title: Unknown sites in host_config endpoints will now be marked as such Component: REST API Level: 1 Class: Bug fix Version: 2.2.0i1 Having a host configured with an unknown site would return a 500 status code error on endpoints such as "/domain-types/host_config/collections/all". This is common in a distributed monitoring environment. Instead the site field under the "extensions" and "attributes" key will now return the site id prefixed with "Unknown Site:". This matches the behaviour of the GUI.

1 year, 9 months

Checkmk Werk 13442: sap_hana_connect crashed on missing SERVERDB

by Benedikt Seidl

ID: 13442 Title: sap_hana_connect crashed on missing SERVERDB Component: Checks & agents Level: 1 Class: Bug fix Version: 2.2.0i1 sap_hana_connect crashed with AttributeError ('NoneType' object has no attribute 'group') when the connect string did not contain a SERVERDB entry.

1 year, 9 months

Checkmk Werk 15037: Fix Veeam CDP job monitoring for disabled jobs

by Joerg Herbel

ID: 15037 Title: Fix Veeam CDP job monitoring for disabled jobs Component: Checks & agents Level: 1 Class: Bug fix Version: 2.2.0i1 The Windows agent plugin for monitoring Veeam jobs (<tt>veeam_backup_status.ps1</tt>) crashed if there was a disabled CDP job on the target system. This has been fixed, hence, disabled jobs will now be discovered as services in Checkmk. Their monitoring status is <i>OK</i> and they don't report the time since the last CDP run, which is not available for disabled jobs. Note that users have to update the agent plugin on affected hosts in order to benefit from this werk.

1 year, 9 months

Checkmk Werk 14635: postgres_stat_database: Check plugin used to crash if database size was an empty string

by LukaRacic

ID: 14635 Title: postgres_stat_database: Check plugin used to crash if database size was an empty string Component: Checks & agents Level: 1 Class: Bug fix Version: 2.2.0i1 The check plugin used to crash if the database size was an empty string. This has now been fixed. >From now on if the database size is an empty string, the check state will turn to WARN and in the summary it will say that the database size is not available.

1 year, 9 months

Checkmk Werk 14840: oracle_instance: Fix missing inventory entries if related SID has an error

by Simon Jess

ID: 14840 Title: oracle_instance: Fix missing inventory entries if related SID has an error Component: HW/SW Inventory Level: 1 Class: Bug fix Version: 2.2.0i1

1 year, 9 months

Checkmk Werk 15012: Add outlet label for raritan px outlet check

by External contributor

ID: 15012 Title: Add outlet label for raritan px outlet check Component: Checks & agents Level: 1 Class: New feature Version: 2.2.0i1 We now add the outlet label in the "raritan_px_outlets" check.

1 year, 10 months

Checkmk Werk 14999: Fix wrong choices in "Service Contact Group" filter

by Ronny Bruska

ID: 14999 Title: Fix wrong choices in "Service Contact Group" filter Component: Multisite Level: 1 Class: Bug fix Version: 2.2.0i1 The filter "Service Contact Group" showed service groups instead of contact groups as choices.

1 year, 10 months

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Checkmk werks level1 November 2022