ocf_heartbeat_ovsmonitor - Man Page

ovsmonitor [start | stop | status | monitor | meta-data | validate-all]

Monitor the vitality of a local ovs bond.

You may set up this RA as a clone resource to monitor the network bonds on different nodes, with the same bond name. This is not related to the IP address or the network on which a bond is configured. You may use this RA to move resources away from a node, which has a faulty bond or prevent moving resources to such a node. This gives you independent control of the resources, without involving cluster intercommunication. But it requires your nodes to have more than one network bond.

The resource configuration requires a monitor operation, because the monitor does the main part of the work. In addition to the resource configuration, you need to configure some location constraints, based on a CIB attribute value. The name of the attribute value is configured in the 'name' option of this RA.

Example constraint configuration using crmsh location loc_connected_node my_resource_grp rule ="rule_loc_connected_node" -INF: ovsmonitor-bond-public eq 0

Example constraint configuration using pcs. Only allow 'my_resource' to run on nodes where eth0 ethernet device is available. pcs constraint location my_resource rule score=-INFINITY ovsmonitor-bond-public ne 1

The ethmonitor works in 3 different modes to test the bond vitality. 1. call ovs-appctl to see if at least one of the bonding's link status is up (if link is down -> error) 2. call ovs-ofctl and watch the RX counter (if packages come around in a certain time -> success) 3. return error

bond

The name of the network bond which should be monitored (e.g. bond-public).

(unique, required, string, no default)

bridge

The name of the ovs bridge that contains the bridge.

(unique, required, string, no default)

name

The name of the CIB attribute to set. This is the name to be used in the constraints. Defaults to "ovsmonitor-'bond_name'".

(unique, optional, string, no default)

multiplier

Multiplier for the value of the CIB attriobute specified in parameter name.

(optional, integer, default 1)

repeat_count

Specify how often the bond will be monitored, before the status is set to failed. You need to set the timeout of the monitoring operation to at least repeat_count * repeat_interval

(optional, integer, default 5)

repeat_interval

Specify how long to wait in seconds between the repeat_counts.

(optional, integer, default 10)

pktcnt_timeout

Timeout for the RX packet counter. Stop listening for packet counter changes after the given number of seconds.

(optional, integer, default 5)

link_status_only

Only report success based on link status. Do not perform RX counter related connectivity tests.

(optional, boolean, default false)

This resource agent supports the following actions (operations):

start

Starts the resource. Suggested minimum timeout: 60s.

stop

Stops the resource. Suggested minimum timeout: 20s.

status

Performs a status check. Suggested minimum timeout: 60s. Suggested interval: 10s.

monitor

Performs a detailed status check. Suggested minimum timeout: 60s. Suggested interval: 10s.

meta-data

Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5s.

validate-all

Performs a validation of the resource configuration. Suggested minimum timeout: 20s.

The following is an example configuration for a ovsmonitor resource using the crm(8) shell:

primitive p_ovsmonitor ocf:heartbeat:ovsmonitor \
  params \
    bond=string \
    bridge=string \
  op monitor depth="0" timeout="60s" interval="10s"

The following is an example configuration for a ovsmonitor resource using pcs(8)

pcs resource create p_ovsmonitor ocf:heartbeat:ovsmonitor \
  bond=string \
  bridge=string \
  op monitor OCF_CHECK_LEVEL="0" timeout="60s" interval="10s"

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