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82 lines
2.0 KiB
Plaintext
82 lines
2.0 KiB
Plaintext
// Module included in the following assemblies:
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//
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// * nodes/nodes-pods-plugins.adoc
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// * post_installation_configuration/node-tasks.adoc
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[id="nodes-pods-plugins-install_{context}"]
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= Enabling Device Manager
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Enable Device Manager to implement a device plug-in to advertise specialized
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hardware without any upstream code changes.
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Device Manager provides a mechanism for advertising specialized node hardware resources
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with the help of plug-ins known as device plug-ins.
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. Obtain the label associated with the static Machine Config Pool CRD for the type of node you want to configure.
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Perform one of the following steps:
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.. View the Machine Config:
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+
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[source,terminal]
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----
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# oc describe machineconfig <name>
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----
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For example:
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[source,terminal]
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----
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# oc describe machineconfig 00-worker
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----
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.Example output
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[source,terminal]
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----
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Name: 00-worker
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Namespace:
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Labels: machineconfiguration.openshift.io/role=worker <1>
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----
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<1> Label required for the device manager.
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.Procedure
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. Create a Custom Resource (CR) for your configuration change.
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+
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.Sample configuration for a Device Manager CR
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[source,yaml]
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----
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apiVersion: machineconfiguration.openshift.io/v1
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kind: KubeletConfig
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metadata:
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name: devicemgr <1>
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spec:
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machineConfigPoolSelector:
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matchLabels:
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machineconfiguration.openshift.io: devicemgr <2>
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kubeletConfig:
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feature-gates:
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- DevicePlugins=true <3>
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----
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<1> Assign a name to CR.
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<2> Enter the label from the Machine Config Pool.
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<3> Set `DevicePlugins` to 'true`.
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. Create the device manager:
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+
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[source,terminal]
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----
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$ oc create -f devicemgr.yaml
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----
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.Example output
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[source,terminal]
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----
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kubeletconfig.machineconfiguration.openshift.io/devicemgr created
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----
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. Ensure that Device Manager was actually enabled by confirming that
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*_/var/lib/kubelet/device-plugins/kubelet.sock_* is created on the node. This is
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the UNIX domain socket on which the Device Manager gRPC server listens for new
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plug-in registrations. This sock file is created when the Kubelet is started
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only if Device Manager is enabled.
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