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Management of Pacemaker/Corosync clusters with PCS
==================================================
A state module to manage Pacemaker/Corosync clusters
with the Pacemaker/Corosync configuration system (PCS)
.. versionadded:: 2016.110
:depends: pcs
Walkthrough of a complete PCS cluster setup:
http://clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Clusters_from_Scratch/
Requirements:
PCS is installed, pcs service is started and
the password for the hacluster user is set and known.
Remark on the cibname variable used in the examples:
The use of the cibname variable is optional.
Use it only if you want to deploy your changes into a cibfile first and then push it.
This makes only sense if you want to deploy multiple changes (which require each other) at once to the cluster.
At first the cibfile must be created:
.. code-block:: yaml
mysql_pcs__cib_present_cib_for_galera:
pcs.cib_present:
- cibname: cib_for_galera
- scope: None
- extra_args: None
Then the cibfile can be modified by creating resources (creating only 1 resource for demonstration, see also 7.):
.. code-block:: yaml
mysql_pcs__resource_present_galera:
pcs.resource_present:
- resource_id: galera
- resource_type: "ocf:heartbeat:galera"
- resource_options:
- 'wsrep_cluster_address=gcomm://node1.example.org,node2.example.org,node3.example.org'
- '--master'
- cibname: cib_for_galera
After modifying the cibfile, it can be pushed to the live CIB in the cluster:
.. code-block:: yaml
mysql_pcs__cib_pushed_cib_for_galera:
pcs.cib_pushed:
- cibname: cib_for_galera
- scope: None
- extra_args: None
Create a cluster from scratch:
1. Authorize nodes to each other:
.. code-block:: yaml
pcs_auth__auth:
pcs.auth:
- nodes:
- node1.example.com
- node2.example.com
- pcsuser: hacluster
- pcspasswd: hoonetorg
- extra_args: []
2. Do the initial cluster setup:
.. code-block:: yaml
pcs_setup__setup:
pcs.cluster_setup:
- nodes:
- node1.example.com
- node2.example.com
- pcsclustername: pcscluster
- extra_args:
- '--start'
- '--enable'
3. Optional: Set cluster properties:
.. code-block:: yaml
pcs_properties__prop_has_value_no-quorum-policy:
pcs.prop_has_value:
- prop: no-quorum-policy
- value: ignore
- cibname: cib_for_cluster_settings
4. Optional: Set resource defaults:
.. code-block:: yaml
pcs_properties__resource_defaults_to_resource-stickiness:
pcs.resource_defaults_to:
- default: resource-stickiness
- value: 100
- cibname: cib_for_cluster_settings
5. Optional: Set resource op defaults:
.. code-block:: yaml
pcs_properties__resource_op_defaults_to_monitor-interval:
pcs.resource_op_defaults_to:
- op_default: monitor-interval
- value: 60s
- cibname: cib_for_cluster_settings
6. Configure Fencing (!is often not optional on production ready cluster!):
.. code-block:: yaml
pcs_stonith__created_eps_fence:
pcs.stonith_present:
- stonith_id: eps_fence
- stonith_device_type: fence_eps
- stonith_device_options:
- 'pcmk_host_map=node1.example.org:01;node2.example.org:02'
- 'ipaddr=myepsdevice.example.org'
- 'power_wait=5'
- 'verbose=1'
- 'debug=/var/log/pcsd/eps_fence.log'
- 'login=hidden'
- 'passwd=hoonetorg'
- cibname: cib_for_stonith
7. Add resources to your cluster:
.. code-block:: yaml
mysql_pcs__resource_present_galera:
pcs.resource_present:
- resource_id: galera
- resource_type: "ocf:heartbeat:galera"
- resource_options:
- 'wsrep_cluster_address=gcomm://node1.example.org,node2.example.org,node3.example.org'
- '--master'
- cibname: cib_for_galera
8. Optional: Add constraints (locations, colocations, orders):
.. code-block:: yaml
haproxy_pcs__constraint_present_colocation-vip_galera-haproxy-clone-INFINITY:
pcs.constraint_present:
- constraint_id: colocation-vip_galera-haproxy-clone-INFINITY
- constraint_type: colocation
- constraint_options:
- 'add'
- 'vip_galera'
- 'with'
- 'haproxy-clone'
- cibname: cib_for_haproxy
.. versionadded:: 2016.3.0
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Get the path to the directory on the minion where CIB's are saved
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Get the full path of a temporary CIB-file with the name of the CIB
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Ensure that an item is created
name
Irrelevant, not used
item
config, property, resource, constraint etc.
item_id
id of the item
item_type
item type
show
show command (probably None, default: show)
create
create command (create or set f.e., default: create)
extra_args
additional options for the pcs command
cibname
use a cached CIB-file named like cibname instead of the live CIB
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u pcs.item_createt createt
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Ensure all nodes are authorized to the cluster
name
Irrelevant, not used (recommended: pcs_auth__auth)
nodes
a list of nodes which should be authorized to the cluster
pcsuser
user for communication with pcs (default: hacluster)
pcspasswd
password for pcsuser (default: hacluster)
extra_args
list of extra args for the 'pcs cluster auth' command
Example:
.. code-block:: yaml
pcs_auth__auth:
pcs.auth:
- nodes:
- node1.example.com
- node2.example.com
- pcsuser: hacluster
- pcspasswd: hoonetorg
- extra_args: []
u nameu resultu u commentu changesu pcs.is_autht nodesu Output of pcs.is_auth: %su stdoutu :i i u authorized_dict: %su Already authorizedu Node {0} is already authorized
u testu Node is set to authorize: {0}
u --forceu pcs.autht pcsusert pcspasswdR, u Output of pcs.auth: %su authorize_dict: %su
Authorizedu Authorized {0}
u oldu newu/ Authorization check for node {0} returned: {1}
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Setup Pacemaker cluster on nodes.
Should be run on one cluster node only
(there may be races)
name
Irrelevant, not used (recommended: pcs_setup__setup)
nodes
a list of nodes which should be set up
pcsclustername
Name of the Pacemaker cluster
extra_args
list of extra args for the 'pcs cluster setup' command
Example:
.. code-block:: yaml
pcs_setup__setup:
pcs.cluster_setup:
- nodes:
- node1.example.com
- node2.example.com
- pcsclustername: pcscluster
- extra_args:
- '--start'
- '--enable'
u nameu resultu u commentu changesu pcs.config_showu Output of pcs.config_show: %su stdoutu :i i i u Cluster Nameu Cluster {0} is already set up
u testu Cluster {0} is set to set up
u pcs.cluster_setupRG t pcsclusternameR, u Output of pcs.cluster_setup: %su line: %su line.split(:).len: %su setup_dict: %su Succeededu Successu Set up {0}
u oldu Setupu newu Failed to setup {0}
u {0}: setup_dict: {1}
u ret: %s( i ( u Cluster NameN( i ( u Succeededu Success( R- R R6 R R R7 R8 R3 R4 R R R. R/ R1 R2 R: R R9 ( R; RG RR R, R< t setup_requiredt config_showRB RC RD t setupt
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Add a node to the Pacemaker cluster via PCS
Should be run on one cluster node only
(there may be races)
Can only be run on a already setup/added node
name
Irrelevant, not used (recommended: pcs_setup__node_add_{{node}})
node
node that should be added
extra_args
list of extra args for the 'pcs cluster node add' command
Example:
.. code-block:: yaml
pcs_setup__node_add_node1.example.com:
pcs.cluster_node_present:
- node: node1.example.com
- extra_args:
- '--start'
- '--enable'
u nameu resultu u commentu changesu pcsu statusu nodesu corosyncu cmd.run_allt output_loglevelu tracet python_shellu' Output of pcs status nodes corosync: %su stdoutu :i i i u Offlineu Onlineu* Node {0} is already member of the cluster
u testu+ Node {0} is set to be added to the cluster
u pcs.cluster_node_addRM R, u" Output of pcs.cluster_node_add: %su line: %su line.split(:).len: %su node_add_dict: %su Corosync updatedu+ Failed to update corosync.conf on node {0}
u {0}: node_add_dict: {1}
u Succeededu Successu Added node {0}
u oldu Addedu newu Failed to add node{0}
u ret: %s( i ( u Offlineu OnlineN( i ( u Corosync updated( u Succeededu Success( R- R6 R R R R7 R8 R3 R4 R R R. R/ R1 R2 R: R R9 ( R; RM R, R< t node_add_requiredt
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is_member_cmdt is_memberRB RC RD t node_addt
node_add_dictt current_nodet current_node_add_state( ( s3 /usr/lib/python2.7/site-packages/salt/states/pcs.pyt cluster_node_present sl "
&
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Ensure that a CIB-file with the content of the current live CIB is created
Should be run on one cluster node only
(there may be races)
name
Irrelevant, not used (recommended: {{formulaname}}__cib_present_{{cibname}})
cibname
name/path of the file containing the CIB
scope
specific section of the CIB (default:
extra_args
additional options for creating the CIB-file
Example:
.. code-block:: yaml
mysql_pcs__cib_present_cib_for_galera:
pcs.cib_present:
- cibname: cib_for_galera
- scope: None
- extra_args: None
u nameu resultu u commentu changesu sha256u file.removeu pcs.cib_createR! t scopeR, u Output of pcs.cib_create: %su retcodei u Failed to get live CIB
u {0}:{1}u
file.get_hashR t formu cib_hash_live: %su cib_hash_cur: %su file.check_hasht file_hashu) CIB {0} is already equal to the live CIB
u CIB {0} checksum is correct
u testu% CIB {0} is set to be created/updated
u. CIB {0} checksum is set to be created/updated
u file.moveu Created/updated CIB {0}
u cibfileu Failed to create/update CIB {0}
u( Created/updated checksum {0} of CIB {1}
u cibcksumu- Failed to create/update checksum {0} CIB {1}
u ret: %s( i N( R- R R R" R$ R& R
R R t makedirsR/ R1 R2 R6 R R R R R R. R: R ( R; R Rd R, R< t
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Ensure that a CIB-file is pushed if it is changed since the creation of it with pcs.cib_present
Should be run on one cluster node only
(there may be races)
name
Irrelevant, not used (recommended: {{formulaname}}__cib_pushed_{{cibname}})
cibname
name/path of the file containing the CIB
scope
specific section of the CIB
extra_args
additional options for creating the CIB-file
Example:
.. code-block:: yaml
mysql_pcs__cib_pushed_cib_for_galera:
pcs.cib_pushed:
- cibname: cib_for_galera
- scope: None
- extra_args: None
u nameu resultu u commentu changesu sha256u CIB-file {0} does not exist
u {0}:{1}u
file.get_hashR Re u cib_hash_cibfile: %su> CIB {0} is not changed since creation through pcs.cib_present
u testu0 CIB {0} is set to be pushed as the new live CIB
u pcs.cib_pushR! Rd R, u Output of pcs.cib_push: %su retcodei u Pushed CIB {0}
u cibfile_pushedu Failed to push CIB {0}
u ret: %sN( i ( R- R R" R& R/ R1 R2 R
R R R R6 R R R R R. R: ( R; R Rd R, R< Rh t cib_push_requiredR! R% t cib_hash_cibfilet cib_push( ( s3 /usr/lib/python2.7/site-packages/salt/states/pcs.pyt
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Ensure that a property in the cluster is set to a given value
Should be run on one cluster node only
(there may be races)
name
Irrelevant, not used (recommended: pcs_properties__prop_has_value_{{prop}})
prop
name of the property
value
value of the property
extra_args
additional options for the pcs property command
cibname
use a cached CIB-file named like cibname instead of the live CIB
Example:
.. code-block:: yaml
pcs_properties__prop_has_value_no-quorum-policy:
pcs.prop_has_value:
- prop: no-quorum-policy
- value: ignore
- cibname: cib_for_cluster_settings
R; R' u propertyR( u {0}={1}R) R+ u setR, R N( RF R R. ( R; t propRD R, R ( ( s3 /usr/lib/python2.7/site-packages/salt/states/pcs.pyt prop_has_value5 s c C@ sC t d | d d d d j | | � d d d d d d d
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uP
Ensure a resource default in the cluster is set to a given value
Should be run on one cluster node only
(there may be races)
Can only be run on a node with a functional pacemaker/corosync
name
Irrelevant, not used (recommended: pcs_properties__resource_defaults_to_{{default}})
default
name of the default resource property
value
value of the default resource property
extra_args
additional options for the pcs command
cibname
use a cached CIB-file named like cibname instead of the live CIB
Example:
.. code-block:: yaml
pcs_properties__resource_defaults_to_resource-stickiness:
pcs.resource_defaults_to:
- default: resource-stickiness
- value: 100
- cibname: cib_for_cluster_settings
R; R' u resourceR( u {0}={1}R) R* u defaultsR+ R, R N( RF R R. ( R; t defaultRD R, R ( ( s3 /usr/lib/python2.7/site-packages/salt/states/pcs.pyt resource_defaults_toZ s c C@ sO t d | d d d d j | | � d d
d d d g d
d d g d | d | � S( uz
Ensure a resource operation default in the cluster is set to a given value
Should be run on one cluster node only
(there may be races)
Can only be run on a node with a functional pacemaker/corosync
name
Irrelevant, not used (recommended: pcs_properties__resource_op_defaults_to_{{op_default}})
op_default
name of the operation default resource property
value
value of the operation default resource property
extra_args
additional options for the pcs command
cibname
use a cached CIB-file named like cibname instead of the live CIB
Example:
.. code-block:: yaml
pcs_properties__resource_op_defaults_to_monitor-interval:
pcs.resource_op_defaults_to:
- op_default: monitor-interval
- value: 60s
- cibname: cib_for_cluster_settings
R; R' u resourceR( u {0}={1}R) R* u opu defaultsR+ R, R N( RF R R. ( R; t
op_defaultRD R, R ( ( s3 /usr/lib/python2.7/site-packages/salt/states/pcs.pyt resource_op_defaults_to� s c
C@ s+ t d | d d d | d | d | d | � S( u�
Ensure that a fencing resource is created
Should be run on one cluster node only
(there may be races)
Can only be run on a node with a functional pacemaker/corosync
name
Irrelevant, not used (recommended: pcs_stonith__created_{{stonith_id}})
stonith_id
name for the stonith resource
stonith_device_type
name of the stonith agent fence_eps, fence_xvm f.e.
stonith_device_options
additional options for creating the stonith resource
cibname
use a cached CIB-file named like cibname instead of the live CIB
Example:
.. code-block:: yaml
pcs_stonith__created_eps_fence:
pcs.stonith_present:
- stonith_id: eps_fence
- stonith_device_type: fence_eps
- stonith_device_options:
- 'pcmk_host_map=node1.example.org:01;node2.example.org:02'
- 'ipaddr=myepsdevice.example.org'
- 'power_wait=5'
- 'verbose=1'
- 'debug=/var/log/pcsd/eps_fence.log'
- 'login=hidden'
- 'passwd=hoonetorg'
- cibname: cib_for_stonith
R; R' u stonithR( R) R, R ( RF ( R; t
stonith_idt stonith_device_typet stonith_device_optionsR ( ( s3 /usr/lib/python2.7/site-packages/salt/states/pcs.pyt stonith_present� s % c
C@ s+ t d | d d d | d | d | d | � S( u�
Ensure that a resource is created
Should be run on one cluster node only
(there may be races)
Can only be run on a node with a functional pacemaker/corosync
name
Irrelevant, not used (recommended: {{formulaname}}__resource_present_{{resource_id}})
resource_id
name for the resource
resource_type
resource type (f.e. ocf:heartbeat:IPaddr2 or VirtualIP)
resource_options
additional options for creating the resource
cibname
use a cached CIB-file named like cibname instead of the live CIB
Example:
.. code-block:: yaml
mysql_pcs__resource_present_galera:
pcs.resource_present:
- resource_id: galera
- resource_type: "ocf:heartbeat:galera"
- resource_options:
- 'wsrep_cluster_address=gcomm://node1.example.org,node2.example.org,node3.example.org'
- '--master'
- cibname: cib_for_galera
R; R' u resourceR( R) R, R ( RF ( R; t resource_idt
resource_typet resource_optionsR ( ( s3 /usr/lib/python2.7/site-packages/salt/states/pcs.pyt resource_present� s c C@ s1 t d | d d d | d | d d d | d | � S(
ug
Ensure that a constraint is created
Should be run on one cluster node only
(there may be races)
Can only be run on a node with a functional pacemaker/corosync
name
Irrelevant, not used (recommended: {{formulaname}}__constraint_present_{{constraint_id}})
constraint_id
name for the constraint (try first to create manually to find out the autocreated name)
constraint_type
constraint type (location, colocation, order)
constraint_options
options for creating the constraint
cibname
use a cached CIB-file named like cibname instead of the live CIB
Example:
.. code-block:: yaml
haproxy_pcs__constraint_present_colocation-vip_galera-haproxy-clone-INFINITY:
pcs.constraint_present:
- constraint_id: colocation-vip_galera-haproxy-clone-INFINITY
- constraint_type: colocation
- constraint_options:
- 'add'
- 'vip_galera'
- 'with'
- 'haproxy-clone'
- cibname: cib_for_haproxy
R; R' u
constraintR( R) R+ R, R N( RF R. ( R; t
constraint_idt constraint_typet constraint_optionsR ( ( s3 /usr/lib/python2.7/site-packages/salt/states/pcs.pyt constraint_present� s " ($ t __doc__t
__future__R R R t loggingR
t salt.utils.filesR t salt.utils.patht salt.utils.stringutilst salt.extR t getLoggert __name__R R R R R R" R$ R& R. RF RQ RX Rc Ro Rs Ru Rw Ry R} R� R� ( ( ( s3 /usr/lib/python2.7/site-packages/salt/states/pcs.pyt <module>� s6 pWY `tI%''-(
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