pcs and crm shell are two popular higher-level command-line interfaces to Pacemaker. Each has its own syntax; this chapter gives a quick comparion of how to accomplish the same tasks using either one. Some examples also show the equivalent command using low-level Pacmaker command-line tools.
These examples show the simplest syntax; see the respective man pages for all possible options.
Show Configuration (Raw XML)
crmsh # crm configure show xml
pcs # pcs cluster cib
pacemaker # cibadmin -Q
Show Configuration (Human-friendly)
crmsh # crm configure show
pcs # pcs config
Show Cluster Status
crmsh # crm status
pcs # pcs status
pacemaker # crm_mon -1
Put node “pcmk-1” in standby mode
crmsh # crm node standby pcmk-1
pcs-0.9 # pcs cluster standby pcmk-1
pcs-0.10 # pcs node standby pcmk-1
pacemaker # crm_standby -N pcmk-1 -v on
Remove node “pcmk-1” from standby mode
crmsh # crm node online pcmk-1
pcs-0.9 # pcs cluster unstandby pcmk-1
pcs-0.10 # pcs node unstandby pcmk-1
pacemaker # crm_standby -N pcmk-1 -v off
Set the “stonith-enabled” cluster property to “false”
crmsh # crm configure property stonith-enabled=false
pcs # pcs property set stonith-enabled=false
pacemaker # crm_attribute -n stonith-enabled -v false
List Resource Agent (RA) Classes
crmsh # crm ra classes
pcs # pcs resource standards
pacmaker # crm_resource --list-standards
List Available Resource Agents (RAs) by Standard
crmsh # crm ra list ocf
pcs # pcs resource agents ocf
pacemaker # crm_resource --list-agents ocf
List Available Resource Agents (RAs) by OCF Provider
crmsh # crm ra list ocf pacemaker
pcs # pcs resource agents ocf:pacemaker
pacemaker # crm_resource --list-agents ocf:pacemaker
List Available Resource Agent Parameters
crmsh # crm ra info IPaddr2
pcs # pcs resource describe IPaddr2
pacemaker # crm_resource --show-metadata ocf:heartbeat:IPaddr2
You can also use the full class:provider:type format with crmsh and pcs if multiple RAs with the same name are available.
Show Available Fence Agent Parameters
crmsh # crm ra info stonith:fence_ipmilan
pcs # pcs stonith describe fence_ipmilan
Create a Resource
crmsh # crm configure primitive ClusterIP ocf:heartbeat:IPaddr2 \
params ip=192.168.122.120 cidr_netmask=24 \
op monitor interval=30s
pcs # pcs resource create ClusterIP IPaddr2 ip=192.168.122.120 cidr_netmask=24
pcs determines the standard and provider (ocf:heartbeat) automatically since IPaddr2 is unique, and automatically creates operations (including monitor) based on the agent’s meta-data.
Show Configuration of All Resources
crmsh # crm configure show
pcs-0.9 # pcs resource show --full
pcs-0.10 # pcs resource config
Show Configuration of One Resource
crmsh # crm configure show ClusterIP
pcs-0.9 # pcs resource show ClusterIP
pcs-0.10 # pcs resource config ClusterIP
Show Configuration of Fencing Resources
crmsh # crm resource status
pcs-0.9 # pcs stonith show --full
pcs-0.10 # pcs stonith config
Start a Resource
crmsh # crm resource start ClusterIP
pcs # pcs resource enable ClusterIP
pacemaker # crm_resource -r ClusterIP --set-parameter target-role --meta -v Started
Stop a Resource
crmsh # crm resource stop ClusterIP
pcs # pcs resource disable ClusterIP
pacemaker # crm_resource -r ClusterIP --set-parameter target-role --meta -v Stopped
Remove a Resource
crmsh # crm configure delete ClusterIP
pcs # pcs resource delete ClusterIP
Modify a Resource’s Instance Parameters
crmsh # crm resource param ClusterIP set clusterip_hash=sourceip
pcs # pcs resource update ClusterIP clusterip_hash=sourceip
pacemaker # crm_resource -r ClusterIP --set-parameter clusterip_hash -v sourceip
crmsh also has an edit command which edits the simplified CIB syntax (same commands as the command line) via a configurable text editor.
Modify a Resource’s Instance Parameters Interactively
crmsh # crm configure edit ClusterIP
Using the interactive shell mode of crmsh, multiple changes can be edited and verified before committing to the live configuration:
Make Multiple Configuration Changes Interactively
crmsh # crm configure
crmsh # edit
crmsh # verify
crmsh # commit
Delete a Resource’s Instance Parameters
crmsh # crm resource param ClusterIP delete nic
pcs # pcs resource update ClusterIP nic=
pacemaker # crm_resource -r ClusterIP --delete-parameter nic
List Current Resource Defaults
crmsh # crm configure show type:rsc_defaults
pcs # pcs resource defaults
pacemaker # cibadmin -Q --scope rsc_defaults
Set Resource Defaults
crmsh # crm configure rsc_defaults resource-stickiness=100
pcs # pcs resource defaults resource-stickiness=100
List Current Operation Defaults
crmsh # crm configure show type:op_defaults
pcs # pcs resource op defaults
pacemaker # cibadmin -Q --scope op_defaults
Set Operation Defaults
crmsh # crm configure op_defaults timeout=240s
pcs # pcs resource op defaults timeout=240s
Enable Resource Agent Tracing for a Resource
crmsh # crm resource trace Website
Clear Fail Counts for a Resource
crmsh # crm resource cleanup Website
pcs # pcs resource cleanup Website
pacemaker # crm_resource --cleanup -r Website
Create a Clone Resource
crmsh # crm configure clone WebIP ClusterIP meta globally-unique=true clone-max=2 clone-node-max=2
pcs # pcs resource clone ClusterIP globally-unique=true clone-max=2 clone-node-max=2
Create a Promotable Clone Resource
crmsh # crm configure ms WebDataClone WebData \
meta master-max=1 master-node-max=1 \
clone-max=2 clone-node-max=1 notify=true
pcs-0.9 # pcs resource master WebDataClone WebData \
master-max=1 master-node-max=1 \
clone-max=2 clone-node-max=1 notify=true
pcs-0.10 # pcs resource promotable WebData WebDataClone \
promoted-max=1 promoted-node-max=1 \
clone-max=2 clone-node-max=1 notify=true
pcs will generate the clone name automatically if it is omitted from the command line.
Create a Colocation Constraint
crmsh # crm configure colocation website-with-ip INFINITY: WebSite ClusterIP
pcs # pcs constraint colocation add ClusterIP with WebSite INFINITY
Create a Colocation Constraint Based on Role
crmsh # crm configure colocation another-ip-with-website inf: AnotherIP WebSite:Master
pcs # pcs constraint colocation add Started AnotherIP with Promoted WebSite INFINITY
Create an Ordering Constraint
crmsh # crm configure order apache-after-ip mandatory: ClusterIP WebSite
pcs # pcs constraint order ClusterIP then WebSite
Create an Ordering Constraint Based on Role
crmsh # crm configure order ip-after-website Mandatory: WebSite:Master AnotherIP
pcs # pcs constraint order promote WebSite then start AnotherIP
Create a Location Constraint
crmsh # crm configure location prefer-pcmk-1 WebSite 50: pcmk-1
pcs # pcs constraint location WebSite prefers pcmk-1=50
Create a Location Constraint Based on Role
crmsh # crm configure location prefer-pcmk-1 WebSite rule role=Master 50: \#uname eq pcmk-1
pcs # pcs constraint location WebSite rule role=Promoted 50 \#uname eq pcmk-1
Move a Resource to a Specific Node (by Creating a Location Constraint)
crmsh # crm resource move WebSite pcmk-1
pcs # pcs resource move WebSite pcmk-1
pacemaker # crm_resource -r WebSite --move -N pcmk-1
Move a Resource Away from Its Current Node (by Creating a Location Constraint)
crmsh # crm resource ban Website pcmk-2
pcs # pcs resource ban Website pcmk-2
pacemaker # crm_resource -r WebSite --move
Remove any Constraints Created by Moving a Resource
crmsh # crm resource unmove WebSite
pcs # pcs resource clear WebSite
pacemaker # crm_resource -r WebSite --clear
List Constraints with IDs
pcs # pcs constraint list --full
Remove Constraint by ID
pcs # pcs constraint remove cli-ban-Website-on-pcmk-1
crmsh # crm configure remove cli-ban-Website-on-pcmk-1
crmsh’s show and edit commands can be used to manage resources and constraints by type:
Show Configuration Elements
crmsh # crm configure show type:primitive
crmsh # crm configure edit type:colocation
Make Multiple Changes and Apply Together
crmsh # crm
crmsh # cib new drbd_cfg
crmsh # configure primitive WebData ocf:linbit:drbd params drbd_resource=wwwdata \
op monitor interval=60s
crmsh # configure ms WebDataClone WebData meta master-max=1 master-node-max=1 \
clone-max=2 clone-node-max=1 notify=true
crmsh # cib commit drbd_cfg
crmsh # quit
pcs # pcs cluster cib drbd_cfg
pcs # pcs -f drbd_cfg resource create WebData ocf:linbit:drbd drbd_resource=wwwdata \
op monitor interval=60s
pcs-0.9 # pcs -f drbd_cfg resource master WebDataClone WebData \
master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true
pcs-0.10 # pcs -f drbd_cfg resource promotable WebData WebDataClone \
promoted-max=1 promoted-node-max=1 clone-max=2 clone-node-max=1 notify=true
pcs # pcs cluster cib-push drbd_cfg
Create Resource Template Based on Existing Primitives of Same Type
crmsh # crm configure assist template ClusterIP AdminIP
Show Information About Recent Cluster Events
crmsh # crm history
crmsh # peinputs
crmsh # transition pe-input-10
crmsh # transition log pe-input-10
Script Multiple-step Cluster Configurations
crmsh # crm script show apache
crmsh # crm script run apache \
id=WebSite \
install=true \
virtual-ip:ip=192.168.0.15 \
database:id=WebData \
database:install=true