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README: miscellaneous corrections

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Markus Lehtonen 2019-05-16 22:49:47 +03:00
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@ -1,6 +1,6 @@
# Node feature discovery for [Kubernetes](https://kubernetes.io)
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- [Overview](#overview)
@ -36,7 +36,7 @@ purposes. This is useful for checking features-detection.
### NFD-Master
When running as a standalone container labeling is expected to fail because
Kubernetes API is not available. Thus, it is recommended to use --no-publish
Kubernetes API is not available. Thus, it is recommended to use `--no-publish`
command line flag. E.g.
```
$ docker run --rm --name=nfd-test <NFD_CONTAINER_IMAGE> nfd-master --no-publish
@ -76,12 +76,11 @@ nfd-master.
publish to the Kubernetes API server. [Default: ]
--extra-label-ns=<list> Comma separated list of allowed extra label namespaces
[Default: ]
```
### NFD-Worker
In order to run `nfd-worker` as a "stand-alone" container against your
In order to run nfd-worker as a "stand-alone" container against your
standalone nfd-master you need to run them in the same network namespace:
```
$ docker run --rm --network=container:nfd-test <NFD_CONTAINER_IMAGE> nfd-worker
@ -136,13 +135,12 @@ nfd-worker.
--sleep-interval=<seconds> Time to sleep between re-labeling. Non-positive
value implies no re-labeling (i.e. infinite
sleep). [Default: 60s]
```
**NOTE** Some feature sources need certain directories and/or files from the
host mounted inside the NFD container. Thus, you need to provide Docker with the
correct `--volume` options in order for them to work correctly when run
stand-alone directly with `docker run`. See the
[template spec](https://github.com/kubernetes-sigs/node-feature-discovery/blob/master/node-feature-discovery-daemonset.yaml.template)
[template spec](https://github.com/kubernetes-sigs/node-feature-discovery/blob/master/nfd-worker-daemonset.yaml.template)
for up-to-date information about the required volume mounts.
## Feature discovery
@ -179,8 +177,6 @@ The last component (i.e. `attribute-name`) is optional, and only used if a
feature logically has sub-hierarchy, e.g. `sriov.capable` and
`sriov.configure` from the `network` source.
_Note: only features that are available on a given node are labeled, so
the only label value published for features is the string `"true"`._
```json
{
@ -198,7 +194,7 @@ the only label value published for features is the string `"true"`._
The `--sources` flag controls which sources to use for discovery.
_Note: Consecutive runs of node-feature-discovery will update the labels on a
_Note: Consecutive runs of nfd-worker will update the labels on a
given node. If features are not discovered on a consecutive run, the corresponding
label will be removed. This includes any restrictions placed on the consecutive run,
such as restricting discovered features with the --label-whitelist option._