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node-feature-discovery/docs/reference/topology-updater-commandline-reference.md
Talor Itzhak 8924213d14 topology-updater: make it possible to disable sleep-interval
Especially convenient for testing porpuses and
completely harmless

Signed-off-by: Talor Itzhak <titzhak@redhat.com>
2023-03-12 12:43:17 +02:00

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Topology Updater Cmdline Reference default 4

NFD-Topology-Updater Commandline Flags

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Table of Contents

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  1. TOC {:toc}

To quickly view available command line flags execute nfd-topology-updater -help. In a docker container:

docker run {{ site.container_image }} \
nfd-topology-updater -help

-h, -help

Print usage and exit.

-version

Print version and exit.

-config

The -config flag specifies the path of the nfd-topology-updater configuration file to use.

Default: /etc/kubernetes/node-feature-discovery/nfd-topology-updater.conf

Example:

nfd-topology-updater -config=/opt/nfd/nfd-topology-updater.conf

-no-publish

The -no-publish flag disables all communication with the nfd-master, making it a "dry-run" flag for nfd-topology-updater. NFD-Topology-Updater runs resource hardware topology detection normally, but no CR requests are sent to nfd-master.

Default: false

Example:

nfd-topology-updater -no-publish

-oneshot

The -oneshot flag causes nfd-topology-updater to exit after one pass of resource hardware topology detection.

Default: false

Example:

nfd-topology-updater -oneshot -no-publish

-sleep-interval

The -sleep-interval specifies the interval between resource hardware topology re-examination (and CR updates). zero means no CR updates on interval basis.

Default: 60s

Example:

nfd-topology-updater -sleep-interval=1h

-watch-namespace

The -watch-namespace specifies the namespace to ensure that resource hardware topology examination only happens for the pods running in the specified namespace. Pods that are not running in the specified namespace are not considered during resource accounting. This is particularly useful for testing/debugging purpose. A "*" value would mean that all the pods would be considered during the accounting process.

Default: "*"

Example:

nfd-topology-updater -watch-namespace=rte

-kubelet-config-uri

The -kubelet-config-uri specifies the path to the Kubelet's configuration. Note that the URi could either be a local host file or an HTTP endpoint.

Default: https://${NODE_NAME}:10250/configz

Example:

nfd-topology-updater -kubelet-config-uri=file:///var/lib/kubelet/config.yaml

-api-auth-token-file

The -api-auth-token-file specifies the path to the api auth token file which is used to retrieve Kubelet's configuration from Kubelet secure port, only taking effect when -kubelet-config-uri is https. Note that this token file must bind to a role that has the get capability to nodes/proxy resources.

Default: /var/run/secrets/kubernetes.io/serviceaccount/token

Example:

nfd-topology-updater -token-file=/var/run/secrets/kubernetes.io/serviceaccount/token

-podresources-socket

The -podresources-socket specifies the path to the Unix socket where kubelet exports a gRPC service to enable discovery of in-use CPUs and devices, and to provide metadata for them.

Default: /host-var/lib/kubelet/pod-resources/kubelet.sock

Example:

nfd-topology-updater -podresources-socket=/var/lib/kubelet/pod-resources/kubelet.sock

-pods-fingerprint

Enbles the compute and report the pod set fingerprint in the NRT. A pod fingerprint is a compact representation of the "node state" regarding resources.

Default: false

Example:

nfd-topology-updater -pods-fingerprint