|Component||Core & Setup|
|Title||Host rename: Reduced duration of core downtime during host renamings|
|Check_MK Edition||Check_MK Raw Edition (CRE)|
|Level||1 - Trivial Change|
|Compatibility||Compatible - no manual interaction needed|
The most time consuming action during renaming of hosts, the rewrite of the monitoring history, is now done while the core is running. After this is done, the core is being stopped and the remaining history files (current one) is updated.