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1. Log on to the affected site
   

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   su - mysite

   
   

2. navigate to ~/var/check_mk/core

   Code Block
   language bash theme RDark
   OMD[mysite]:~$ cd ~/var/check_mk/core/

   
   

3. here you will find all the "state" files
   

   Code Block
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   OMD[mysite]:~/var/check_mk/core$ ls archive/ helper_config/ state.1 state.5 state.9 autochecks/ history state.2 state.6 config state state.3 state.7 discovered_host_labels/ state-version-7 state.4 state.8

   The cmc is using always the file "state"
   
   

4. Now rename the "state" file to state.(number)
   

   Warning
   BE  AWARE: all ad hoc Downtimes + Acknowledgements + Comments are gone, but you can restore the old state file later. The state is creating every 10 minutes or after changes in the GUI. A backup is created when the new file is 5% smaller than the old one. Checkmk will save 30 state files and the rewrite then overwrite the old ones.

   
   

   Code Block
   language bash theme RDark
   OMD[mysite]:~/var/check_mk/core$ mv state state.10

   The number depends on how many state.(number) files you already have.

   
   

5. You can either restart the whole site with

   Code Block
   language bash theme RDark
   OMD[mysite]:~ omd restart

   or do
   

   Code Block
   language bash theme RDark
   cmk -O

   
   

   Now a new "state" file is created!

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