|Title||cmk-update-agent: New binary format of Agent Updater executable on Linux|
|Check_MK Edition||Check_MK Enterprise Edition (CEE)|
|Level||2 - Prominent Change|
|Compatibility||Compatible - no manual interaction needed|
The cmk-update-agent executable is now implemented as a packaged binary executable. This werk consists of many changes that have partly already been applied to Check_MK 1.5.0i1.
The new agent updater addresses several problems and yields some improvements:
* Better compatibility: All requirements regarding the installed Python Interpreter or other packages/programs were eliminated; the only requirements left are a x86_64 processor architecture and a glibc 2.5 or above.
* Notably, there will be no more problems with curl and because all communication is now done via python-requests, which is included within the cmk-update-agent executable as mentioned above.
* The reduction of the requirements will also reduce compatibility problems on some systems related to the encrypted SSL communication with the Check_MK server.
* More convenient communication with Check_MK Server: All HTTP-Requests have been changed to POST-Requests. This improves confidentiality of the information transfered to the Check_MK server. The data is no longer written to the apache log of the Check_MK servers apache (system and site apache).
* cmk-update-agent installed only once: The copy of cmk-update-agent previously placed under /usr/bin/cmk-update-agent has been replaced by a shell script that executes the actual cmk-update-agent executable situated at the Check_MK Agent plugin directory. This eliminates the need to maintain two places when manually replacing cmk-update-agent for debugging reasons. However, it is still possible to execute a copy of the cmk-update-agent executable directly.