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  • If nothing is still found, it is recommended to investigate the history file located in the ~/var/check_mk/core, explicitly searching for the summary information. In this particular scenario, the summary to search for is 'DT2'. 

    Code Block
    languagebash
    themeRDark
    OMD[mysite]~$ grep -rl <DOWNTIMESUMMARY> ~/var/check_mk/core/history

Image Removed


  • Code Block
    languagebash
    themeRDark
    OMD[mysite]:-/var/check_ mk/core$ grep -r DT2
history:[1684243614] EXTERNAL COMMAND: SCHEDULE HOST_ DOWNTIME;localhost2;1684243614:1684243734;1;0;0;cmkadmin;DT2
history:[1684243614] HOST DOHNTIME ALERT: localhost2;STARTED;DT2
OMD[mysite]:~ /var/check_mk/core$



  • If the history file is large, reviewing the files in ~/var/check_mk/core/archive can also be helpful. These history files contain Unix timestamps that can help with troubleshooting. 

    Code Block
    languagebash
    themeRDark
    OMD[mysite]~$ grep -rl <DOWNTIMESUMMARY> ~/var/check_mk/core/archive/*


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