crm_diff(8)
| PACEMAKER(8) | System Administration Utilities | PACEMAKER(8) |
NAME
Pacemaker - Part of the Pacemaker cluster resource manager
SYNOPSIS
crm_diff original_xml operation [options]
DESCRIPTION
Compare two Pacemaker configurations (in XML format) to produce a custom diff-like output, or apply such an output as a patch
OPTIONS
Help Options:
- -h, --help
- Show help options
- --help-all
- Show all help options
- --help-output
- Show output help
- --help-xml
- Show original XML options
- --help-operation
- Show operation options
- --help-additional
- Show additional options
Output Options:
- --output-as=FORMAT
- Specify output format as one of: text (default), xml
- --output-to=DEST
- Specify file name for output (or "-" for stdout)
Original XML:
- -o, --original=FILE
- XML is contained in the named file. Currently --original-string overrides this. In a future release, the last one specified will be used.
- -O, --original-string=STRING
- XML is contained in the supplied string. Currently this takes precedence over --original. In a future release, the last one specified will be used.
Operation:
- -n, --new=FILE
- Compare the original XML to the contents of the named file. Currently --new-string overrides this. In a future release, the last one specified will be used.
- -N, --new-string=STRING
- Compare the original XML with the contents of the supplied string. Currently this takes precedence over --patch and --new. In a future release, the last one specified will be used.
- -p, --patch=FILE
- Patch the original XML with the contents of the named file. Currently --new-string and (if specified later) --new override the input source specified here. In a future release, the last one specified will be used. Note: even if this input source is overridden, the input source will be applied as a patch to the original XML.
OPTIONS
Additional Options:
- -c, --cib
- Compare/patch the inputs as a CIB (includes version details)
- -u, --no-version
- Generate the difference without version details
Application Options:
- -$, --version
- Display software version and exit
- -V, --verbose
- Increase debug output (may be specified multiple times)
EXAMPLES
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
AUTHOR
Written by Andrew Beekhof and the Pacemaker project contributors
| June 2026 | Pacemaker 3.0.2-alt1 |