The checksum of the old configuration file. The checksum of the older version of the file must match the current version of the file, otherwise the action does not run, because the file must have changed.


You can use the GetSharedFile action to retrieve the checksum.

Actions: UpdateSharedFile
Type: String
Default: None
Required: Required for UpdateServiceConfig. Optional for UpdateSharedFile, unless you set Operation to update or delete, in which case it is required.
Example: OldCheckSum=ad215bc3e76e021f7cf4c9284e57bf8d
See Also: SharedFilePath (configuration parameter)