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# Checkmk update agent [(Download the MKP package)](/../../../-/raw/master/checkmk_update.mkp "Download MKP package")
This plugin mointors the update status of yor CMK sites and your CMK appliance firmware. The plugin reads it's data once a day form the Checkmk download page (**https://download.checkmk.com/stable_downloads.json**).
THX to Baris Leenders for providing the data as JSON download and Martin Hirschvogel for supporting the development of this plugin (both from tribe29).
**NOTE**: before updating from the special agent version of this plugin, remove the old package completely (rules and package) please.
**NOTE**: to get the download URLs in the service details not replaced by CMK you need to disable `Escape HTML in service output` (_Setup_ > _Services_ > _Service monitoring rules_ > _Escape HTML in service output_) for the service `Checkmk Update`.
For the check plugin to work
- Your CMK site servers need to run check-mk agent version 2.0.0 or higher to get CMK site informations
- The HW/SW inventory plugin for Linux must be installad and running (`mk_inventory.linux` agent plugin needs to be deployed)
- The CMK server, where the check runs must have access to **https://download.checkmk.com/stable_downloads.json**
#### Want to contribute?
Nice ;-) Have a look at the [contribution guidelines](CONTRIBUTING.md "Contributing")
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#### Check Info:
* *service*: creates the service **_Checkmk Update_** with the CMK site name as the _item_
* if your Checkmk version is older than the available checkmk version for your release
* if your Checkmk release (base version) could not be detected
* *wato*: [(see WATO options)](/../../../-/raw/master/doc/wato.png "see WATO options")
Sample output
![sample output](/doc/sample.png?raw=true "sample output")