crm_diff (8) Linux Manual Page
Pacemaker – Part of the Pacemaker cluster resource manager
Synopsis
crm_diff original_xml operation [options]
Description
crm_diff – A utility for comparing Pacemaker configurations (XML format)
The tool produces a custom (diff-like) output which it can also apply like a patch
Options
- -?, –help
- This text
- -$, –version
- Version information
- -V, –verbose
- Increase debug output
Original XML:
- -o, –original=value
- XML is contained in the named file
- -O, –original-string=value
- XML is contained in the supplied string
Operation:
- -n, –new=value
- Compare the original XML to the contents of the named file
- -N, –new-string=value
- Compare the original XML to the contents of the supplied string
- -p, –patch=value
- Patch the original XML with the contents of the named file
Additional Options:
- -c, –cib
- Compare/patch the inputs as a CIB (includes versions details)
- -u, –no-version
- Generate the difference without versions details
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 patch.xml
Author
Written by Andrew Beekhof
Reporting Bugs
Report bugs to pacemaker [at] oss.clusterlabs.org