Commandline flags of nfd-worker
Table of contents
- -h, -help
- -version
- -config
- -options
- -server
- -ca-file
- -cert-file
- -key-file
- -server-name-override
- -feature-sources
- -label-sources
- -sources
- -no-publish
- -label-whitelist
- -oneshot
- -sleep-interval
- Logging
To quickly view available command line flags execute nfd-worker -help. In a docker container:
docker run k8s.gcr.io/nfd/node-feature-discovery:v0.11.3 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
-feature-sources
The -feature-sources flag specifies a comma-separated list of enabled feature sources. A special value all enables all sources. Prefixing a source name with - indicates that the source will be disabled instead - this is only meaningful when used in conjunction with all. This command line flag allows completely disabling the feature detection so that neither standard feature labels are generated nor the raw feature data is available for custom rule processing. Consider using the core.featureSources config file option, instead, allowing dynamic configurability.
Note: This flag takes precedence over the core.featureSources configuration file option.
Default: all
Example:
nfd-worker -feature-sources=all,-pci
-label-sources
The -label-sources flag specifies a comma-separated list of enabled label sources. A special value all enables all sources. Prefixing a source name with - indicates that the source will be disabled instead - this is only meaningful when used in conjunction with all. Consider using the core.labelSources config file option, instead, allowing dynamic configurability.
Note: This flag takes precedence over the core.labelSources configuration file option.
Default: all
Example:
nfd-worker -label-sources=kernel,system,local
-sources
DEPRECATED: use -label-sources instead.
-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.
Note: This flag takes precedence over the core.labelWhiteList configuration file option.
Default: empty
Example:
nfd-worker -label-whitelist='.*cpuid\.'
DEPRECATED: you should use the core.labelWhiteList option in the configuration file, instead.
-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.
Note: This flag takes precedence over the core.sleepInterval configuration file option.
Default: 60s
Example:
nfd-worker -sleep-interval=1h
DEPRECATED: you should use the core.sleepInterval option in the configuration file, instead.
Logging
The following logging-related flags are inherited from the klog package.
Note: The logger setup can also be specified via the core.klog configuration file options. However, the command line flags take precedence over any corresponding config file options specified.
-add_dir_header
If true, adds the file directory to the header of the log messages.
Default: false
-alsologtostderr
Log to standard error as well as files.
Default: false
-log_backtrace_at
When logging hits line file:N, emit a stack trace.
Default: empty
-log_dir
If non-empty, write log files in this directory.
Default: empty
-log_file
If non-empty, use this log file.
Default: empty
-log_file_max_size
Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited.
Default: 1800
-logtostderr
Log to standard error instead of files
Default: true
-skip_headers
If true, avoid header prefixes in the log messages.
Default: false
-skip_log_headers
If true, avoid headers when opening log files.
Default: false
-stderrthreshold
Logs at or above this threshold go to stderr.
Default: 2
-v
Number for the log level verbosity.
Default: 0
-vmodule
Comma-separated list of pattern=N settings for file-filtered logging.
Default: empty
