Werk #6938: cmk-update-agent: Handle failing package manager
| Component | Agent bakery | ||||
| Title | cmk-update-agent: Handle failing package manager | ||||
| Date | Jan 18, 2019 | ||||
| Level | Trivial Change | ||||
| Class | Bug Fix | ||||
| Compatibility | Compatible - no manual interaction needed | ||||
| Checkmk versions & editions |
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This werk fixes two bugs that occur on Unix and Linux when the invoked package manager fails to install an agent package:
The agent updater saved the agent hash to its state file immediately before the update takes place. As a result, an agent package got recognized as installed even if its installation failed.
(Regression since Check_MK 1.5) Due to inproper handling of the stderr and stdout streams coming from the invoked package manager, the agent updater crashed on a package manager failure instead of forwarding the error messages to the user or log.