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  1. Red Hat Workload Availability
  2. RHWA-97

Templating for the fence agent's parameters.

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      Cause: Sometimes fencing parameters for different nodes only differ by the node name in one of the parameters. But it is not possible to allow the FAR Operator to automatically place the node name in a parameter.
      Consequence: Instead of using a shared parameter, you must use node parameters for each node.
      Fix: Fencing parameters are updated to now support a "{{.NodeName}}" template for the node name, which will be replaced with the node name of the node being fenced.
      Result: You no longer have to provide many node parameters when they differ only by node name, and instead you can use a single shared parameter.
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      Cause: Sometimes fencing parameters for different nodes only differ by the node name in one of the parameters. But it is not possible to allow the FAR Operator to automatically place the node name in a parameter. Consequence: Instead of using a shared parameter, you must use node parameters for each node. Fix: Fencing parameters are updated to now support a "{{.NodeName}}" template for the node name, which will be replaced with the node name of the node being fenced. Result: You no longer have to provide many node parameters when they differ only by node name, and instead you can use a single shared parameter.
    • Feature
    • Proposed

      In order to avoid hard coding node details, for some fence agents a template mechanism could eliminate the node to hard code node specifics, i.e.

      kind: FenceAgentsRemediationTemplate
...
spec:
  template:
    spec:
      agent: fence_redfish
      sharedparameters:
        '--ip': "192.168.123.1"
        ...
        '--systems-uri': "/redfish/v1/Systems/{{.NodeName}}"

        1. share-secret-testing-for-far.txt
          13 kB
        2. far_standalone_4_20_connected_node_secret.txt
          17 kB
        3. far_standalone_4_16_node_secret_name.connected.text
          42 kB
        4. far_shared_node_names_4_16_connected.text
          19 kB
        5. far_nhc_with_node_pram_5_sept_connected.text
          21 kB

              mshitrit@redhat.com Michael Shitrit
              fdeutsch@redhat.com Fabian Deutsch
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                Created:
                Updated:
                Resolved: