crm_simulate - Man Page
Part of the Pacemaker cluster resource manager
Synopsis
crm_simulate <data source> <operation> [options]
Description
crm_simulate - simulate a Pacemaker cluster's response to events
Options
Help Options
- -h, --help
Show help options
- --help-all
Show all help options
- --help-output
Show output help
- --help-operations
Show operations options
- --help-synthetic
Show synthetic cluster event options
- --help-artifact
Show artifact options
- --help-source
Show data source 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)
- --text-fancy
Use more highly formatted output (requires --output-as=text)
Operations
- -R, --run
Process the supplied input and show what actions the cluster will take in response
- -S, --simulate
Like --run, but also simulate taking those actions and show the resulting new status
- -X, --in-place
Like --simulate, but also store the results back to the input file
- -A, --show-attrs
Show node attributes
- -c, --show-failcounts
Show resource fail counts
- -s, --show-scores
Show allocation scores
- -U, --show-utilization
Show utilization information
- -P, --profile=DIR
Process all the XML files in the named directory to create profiling data
- -N, --repeat=N
With --profile, repeat each test N times and print timings
Synthetic Cluster Events
- -u, --node-up=NODE
Simulate bringing a node online
- -d, --node-down=NODE
Simulate taking a node offline
- -f, --node-fail=NODE
Simulate a node failing
- -i, --op-inject=OPSPEC
Generate a failure for the cluster to react to in the simulation. See `Operation Specification` help for more information.
- -F, --op-fail=OPSPEC
If the specified task occurs during the simulation, have it fail with return code ${rc}. The transition will normally stop at the failed action. Save the result with --save-output and re-run with --xml-file. See `Operation Specification` help for more information.
- -t, --set-datetime=DATETIME
Set date/time (ISO 8601 format, see https://en.wikipedia.org/wiki/ISO_8601)
- -q, --quorum=QUORUM
Set to '1' (or 'true') to indicate cluster has quorum
- -w, --watchdog=DEVICE
Set to '1' (or 'true') to indicate cluster has an active watchdog device
- -g, --ticket-grant=TICKET
Simulate granting a ticket
- -r, --ticket-revoke=TICKET
Simulate revoking a ticket
- -b, --ticket-standby=TICKET
Simulate making a ticket standby
- -e, --ticket-activate=TICKET
Simulate activating a ticket
Artifact Options
- -I, --save-input=FILE
Save the input configuration to the named file
- -O, --save-output=FILE
Save the output configuration to the named file
- -G, --save-graph=FILE
Save the transition graph (XML format) to the named file
- -D, --save-dotfile=FILE
Save the transition graph (DOT format) to the named file
- -a, --all-actions
Display all possible actions in DOT graph (even if not part of transition)
Data Source
- -L, --live-check
Connect to CIB manager and use the current CIB contents as input
- -x, --xml-file=FILE
Retrieve XML from the named file
- -p, --xml-pipe
Retrieve XML from stdin
Application Options
- -$, --version
Display software version and exit
- -V, --verbose
Increase debug output (may be specified multiple times)
- -Q, --quiet
Display only essential output
Operation Specification
The OPSPEC in any command line option is of the form ${resource}_${task}_${interval_in_ms}@${node}=${rc} (memcached_monitor_20000@bart.example.com=7, for example). ${rc} is an OCF return code. For more information on these return codes, refer to https://clusterlabs.org/pacemaker/doc/2.1/Pacemaker_Administration/html/agents.html#ocf-return-codes
Examples
Pretend a recurring monitor action found memcached stopped on node fred.example.com and, during recovery, that the memcached stop action failed:
crm_simulate -LS --op-inject memcached:0_monitor_20000@bart.example.com=7 --op-fail memcached:0_stop_0@fred.example.com=1 --save-output /tmp/memcached-test.xml
Now see what the reaction to the stop failed would be:
crm_simulate -S --xml-file /tmp/memcached-test.xml
Author
Written by Andrew Beekhof