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NFD-Worker Commandline Flags
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Table of Contents
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To quickly view available command line flags execute nfd-worker --help.
In a docker container:
docker run {{ site.container_image }} nfd-worker --help
-h, --help
Print usage and exit.
--version
Print version and exit.
--config
The --config flag specifies the path of the nfd-worker configuration file to
use.
Default: /etc/kubernetes/node-feature-discovery/nfd-worker.conf
Example:
nfd-worker --config=/opt/nfd/worker.conf
--options
The --options flag may be used to specify and override configuration file
options directly from the command line. The required format is the same as in
the config file i.e. JSON or YAML. Configuration options specified via this
flag will override those from the configuration file:
Default: empty
Example:
nfd-worker --options='{"sources":{"cpu":{"cpuid":{"attributeWhitelist":["AVX","AVX2"]}}}}'
--server
The --server flag specifies the address of the nfd-master endpoint where to
connect to.
Default: localhost:8080
Example:
nfd-worker --server=nfd-master.nfd.svc.cluster.local:443
--ca-file
The --ca-file is one of the three flags (together with --cert-file and
--key-file) controlling the mutual TLS authentication on the worker side.
This flag specifies the TLS root certificate that is used for verifying the
authenticity of nfd-master.
Default: empty
Note: Must be specified together with --cert-file and --key-file
Example:
nfd-worker --ca-file=/opt/nfd/ca.crt --cert-file=/opt/nfd/worker.crt --key-file=/opt/nfd/worker.key
--cert-file
The --cert-file is one of the three flags (together with --ca-file and
--key-file) controlling mutual TLS authentication on the worker side. This
flag specifies the TLS certificate presented for authenticating outgoing
requests.
Default: empty
Note: Must be specified together with --ca-file and --key-file
Example:
nfd-workerr --cert-file=/opt/nfd/worker.crt --key-file=/opt/nfd/worker.key --ca-file=/opt/nfd/ca.crt
--key-file
The --key-file is one of the three flags (together with --ca-file and
--cert-file) controlling the mutual TLS authentication on the worker side.
This flag specifies the private key corresponding the given certificate file
(--cert-file) that is used for authenticating outgoing requests.
Default: empty
Note: Must be specified together with --cert-file and --ca-file
Example:
nfd-worker --key-file=/opt/nfd/worker.key --cert-file=/opt/nfd/worker.crt --ca-file=/opt/nfd/ca.crt
--server-name-override
The --server-name-override flag specifies the common name (CN) which to
expect from the nfd-master TLS certificate. This flag is mostly intended for
development and debugging purposes.
Default: empty
Example:
nfd-worker --server-name-override=localhost
--sources
The --sources flag specifies a comma-separated list of enabled feature
sources. A special value all enables all feature sources.
Default: all
Example:
nfd-worker --sources=kernel,system,local
--no-publish
The --no-publish flag disables all communication with the nfd-master, making
it a "dry-run" flag for nfd-worker. NFD-Worker runs feature detection normally,
but no labeling requests are sent to nfd-master.
Default: false
Example:
nfd-worker --no-publish
--label-whitelist
The --label-whitelist specifies a regular expression for filtering feature
labels based on their name. Each label must match against the given reqular
expression in order to be published.
Note: The regular expression is only matches against the "basename" part of the label, i.e. to the part of the name after '/'. The label namespace is omitted.
Default: empty
Example:
nfd-worker --label-whitelist='.*cpuid\.'
--oneshot
The --oneshot flag causes nfd-worker to exit after one pass of feature
detection.
Default: false
Example:
nfd-worker --oneshot --no-publish
--sleep-interval
The --sleep-interval specifies the interval between feature re-detection (and
node re-labeling). A non-positive value implies infinite sleep interval, i.e.
no re-detection or re-labeling is done.
Default: 60s
Example:
nfd-worker --sleep-interval=1h