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The customer is experiencing difficulties resolving the constant downtime for a specific host. The issue involves a situation where the downtime was initiated without an associated end time.

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Troubleshooting

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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
  language bash theme RDark
  OMD[mysite]~$ grep -rl <DOWNTIMESUMMARY> ~/var/check_mk/core/history

  
  

• 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
  language bash theme RDark
  OMD[mysite]~$ grep -rl <DOWNTIMESUMMARY> ~/var/check_mk/core/archive/*

  
  

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