Pacemaker - Part of the Pacemaker cluster resource manager

       Written by Andrew Beekhof and the Pacemaker project contributors

Pacemaker 3.0.0                                     June 2025                                       PACEMAKER(8)

       Compare  two Pacemaker configurations (in XML format) to produce a custom diff-like output, or apply such
       an output as a patch

       Obtain the two different configuration files by running cibadmin on the two cluster setups to compare:

              # cibadmin --query > cib-old.xml

              # cibadmin --query > cib-new.xml

       Calculate and save the difference between the two files:

              # crm_diff --original cib-old.xml --new cib-new.xml > patch.xml

       Apply the patch to the original file:

              # crm_diff --original cib-old.xml --patch patch.xml > updated.xml

       Apply the patch to the running cluster:

              # cibadmin --patch -x patch.xml

       Pacemaker - Part of the Pacemaker cluster resource manager

HelpOptions:-h, --help
              Show help options

       --help-all
              Show all help options

       --help-xml
              Show original XML options

       --help-operation
              Show operation options

       --help-additional
              Show additional options

   OriginalXML:-o, --original=FILE
              XML is contained in the named file

       -O, --original-string=STRING
              XML is contained in the supplied string

   Operation:-n, --new=FILE
              Compare the original XML to the contents of the named file

       -N, --new-string=STRING
              Compare the original XML with the contents of the supplied string

       -p, --patch=FILE
              Patch the original XML with the contents of the named file

   AdditionalOptions:-c, --cib
              Compare/patch the inputs as a CIB (includes versions details)

       -s, --stdin-u, --no-version
              Generate the difference without versions details

   ApplicationOptions:
       -$, --version
              Display software version and exit

       -V, --verbose
              Increase debug output (may be specified multiple times)

       crm_diff original_xml operation [options]