[Release] Checkmk stable release 2.0.0p20

Dear friends of Checkmk,

the new stable release 2.0.0p20 of Checkmk is ready for download.

This maintenance release ships with 26 changes affecting all editions of Checkmk,
9 Enterprise Edition specific changes and 0 Managed Services Edition specific changes.

Changes in all Checkmk Editions:


  • 13662 FIX: Fix saving of comment if BI pack is edited

Checks & agents:

  • 13708 FIX: bluecoat_sensors: Fix “TypeError (‘NoneType’ object is not iterable)”
  • 13709 FIX: bluecoat_sensors_temp: Handle state reported by sensor correctly
  • 13521 FIX: mcafee_av_client: Fix ValueError (time data u’search:’ …)
  • 13710 FIX: oracle_instance: Handle unresponsive databases and login failures correctly
  • 13405 FIX: Allow to disable thread levels
  • 13690 FIX: Checkmk Service: Do not crash upon exceptions in clustered legacy plugins
  • 13406 FIX: agent_vsphere: KeyError: runtime.host
  • 13529 FIX: lvm_vgs: Fix graph for filesystem units
  • 13531 FIX: mk_postgres: Fix Bug with password authentication method on Linux
  • 13532 FIX: storeonce4x_cat_stores: Do not check filesystem if quota is disabled

Core & setup:

  • 13407 FIX: RESTAPI: do not update config generation on get requests

Event console:

  • 13665 FIX: Fix visibility of event console actions on rule editing


  • 13666 FIX: Opsgenie: Fix using team names with spaces


  • 13717 SEC: Persistant XSS in Predefined Conditions
  • 13199 SEC: Persistant XSS in Custom User Attributes
    NOTE: Please refer to the migration notes!
  • 13716 SEC: Persistant XSS in Notification configuration
  • 13530 FIX: FIX node and cluster data source consistency validation
  • 13632 FIX: Password store: Fix sharing passwords with other contact group members
  • 13711 FIX: Service discovery with non-ASCII service names
  • 13713 FIX: Special agent for IPMI sensors: Fix privilege level configuration
    NOTE: Please refer to the migration notes!

User interface:

  • 13663 FIX: Fix JSONDecodeError on crash reports view
  • 13660 FIX: Fix duplicate “Event icons” painter
  • 13667 FIX: Fix label search for labels with same key
  • 13614 FIX: Fix missing context in title on hostgroup and servicegroup views
  • 13664 FIX: Fix required comment field on removing of downtimes

Changes in the Checkmk Enterprise Edition:

Checks & agents:

  • 13600 FIX: Custom Windows agent port was not respected during update

Livestatus proxy:

  • 13714 FIX: Avoid unnecessary Liveproxy Daemon restarts upon “Activate changes”

Ntopng integration:

  • 13572 FIX: Disable SSL checking with ntop
  • 13573 FIX: Reenable ntopng flows page
  • 13571 FIX: VLAN aware ntop setups

Reporting & availability:

  • 13719 SEC: Remove report element “Paragraph of text fetched via HTTP(s)”
    NOTE: Please refer to the migration notes!
  • 13615 FIX: Add margin to Graph titles in reports
  • 13613 FIX: Admin can edit report schedules for reports not published to them

User interface:

  • 13290 FIX: Fixed broken SLA painters in customize view

Changes in the Checkmk Managed Services Edition:

You can download Checkmk from our download page:

Please mail bug reports and qualified feedback to feedback@checkmk.com.
We greatly thank you for using Checkmk and wish you a successful monitoring,

Your Checkmk Team