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Werk #10975: Support local files in Agent Bakery

Component Agent Bakery
Title Support local files in Agent Bakery
Date Mar 17, 2020
Checkmk Editon Checkmk Enterprise (CEE)
Checkmk Version 2.0.0i1
Level Prominent Change
Class New Feature
Compatibility Compatible - no manual interaction needed

The agent bakery now recognizes files placed under the local hierachy of the Checkmk site and packages them as a replacement for the corresponding non-local/builtin-files.

Previously, this feature was available for some files like "custom-files" or the agent itself. Now this holds true for all files that get packaged into the baked agent package.

For example, if you want to replace a plugin file, that is located at ~/share/check_mk/agents/plugins/my_plugin, you would place your own version at ~/local/share/check_mk/agents/plugins/my_plugin.

Additionally, the agent bakery watches all files that are relevant for a package and will invalidate the current package upon changes in file size, modification date, or file permissions, resulting in a newly baked package with new agent hash on bake request. This is visible by an orange-colored "Bake agents" button at the agent bakery.

Especially, if a file is added to the local hierarchy as a replacement for a builtin-file, this will be recognized as a file change and result in a new package on bake request.

Please note: Some files will get renamed by the bake process, e.g. the source file check_mk_agent.linux will result in check_mk_agent in the final agent package. In order to get a local file packaged, you always have to place your local file using the source name (Here: ~/local/share/check_mk/agents/check_mk_agent.linux).

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