Werk #5701: Windows agent: renew logging

Component Checks & agents
Title Windows agent: renew logging
Date Feb 1, 2018
Level Trivial Change
Class New Feature
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
1.5.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.4.0p25 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

The logging functionality of the Windows agent was rewritten. The key features and changes are as follows:

  • The logs are built incrementally over time and rotated up to 5 copies once the log size of 8 MB is reached.
  • The formatting of the log entries has been changed to include a numeric log level (0...7) and an absolute timestamp with the accuracy of milliseconds (instead of a relative time since the agent started).
  • The naming of agent logfiles has been changed: the agent logs to CHECK_MK_AGENT_INSTALL_DIR\log\agent.log which will then be rotated as agent.log.N, N={1...5}
  • Crash info as subsection [[[Check_MK Agent]]] within the section <<<logwatch>>> was removed. Now that the logs are persistent, information about past crashes can be obtained in the logs.
  • Debug log entries are enabled by setting crash_debug = yes in the global section of check_mk.ini.
  • The names of the various logfiles no longer appear in the output of section Check_MK when crash_debug = yes.

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