Legacy Custom Dashboards will gradually be repealed in preparation for it’s full discontinuation at the end of March 2021

Thank you for choosing Mackerel. Today’s announcement concerns the discontinuation of the Legacy Custom Dashboard function. Please note that because migration will not be automatic, we recommend taking necessary measures in advance. See below for more details.

Target functions


The schedule for the discontinuation of these functions is as follows.

  • As of the end of January 2021, creating new Legacy Custom Dashboards will no longer be available.
  • As of the end of March 2021, viewing / updating existing Legacy Custom Dashboards will no longer be available.

Migrating from Legacy Custom Dashboards to the current Custom Dashboards

Migration from an existing legacy custom dashboard to the current custom dashboard will not be automatic.

  • We apologize for the inconvenience, but ask that you migrate to the current Custom Dashboards yourself.
  • Definitions for Legacy Custom Dashboards are in Markdown format and can be used with the Markdown widget supported for the current Custom Dashboards.
  • The Web API for current Custom Dashboards can also be used.

Other points of note

  • As stated in the ‘Target Functions’ section of this announcement, the Web API and command line tool will soon become unavailable.
    • An update to make the current custom dashboards compatible with mkr is currently under consideration (mkr dashboards is currently only supported for Legacy Custom Dashboards).

Again, we apologize for any inconvenience that this may cause those of you who are currently using this function. On the bright side, compared to the Legacy Custom Dashboards, the current Custom Dashboards supports a handful of useful widgets like the Markdown widget mentioned above and lets you intuitively rearrange the size, layout, and display range of each widget, making this function handy all-around.

We hope you will take this opportunity to utilize the current Custom Dashboards and all of its functions. Thank you for your understanding and cooperation.