Showing labels of nodes in columns

/*@jsxRuntime automatic @jsxImportSource react*/
const {useMDXComponents: _provideComponents} = arguments[0];
function _createMdxContent(props) {
  const _components = Object.assign({
    p: "p",
    h2: "h2",
    code: "code",
    pre: "pre"
  }, _provideComponents(), props.components), {OpenShiftLocal, KubeBadge} = _components;
  if (!KubeBadge) _missingMdxReference("KubeBadge", true);
  if (!OpenShiftLocal) _missingMdxReference("OpenShiftLocal", true);
  return <><_components.p>{"With more than one node and more advanced setup than in "}<s>{"minishift"}</s>{" "}<s>{"Code Ready Containers"}</s>{" Red Hat OpenShift Local, you can use labels to add metadata to nodes. There are two ways to display later this information."}</_components.p>{"\n"}<_components.h2>{"Showing all labels of a node"}</_components.h2>{"\n"}<_components.p>{"The following command returns all labels of all nodes. Normally the labels are not displayed and the "}<_components.code>{"--show-labels"}</_components.code>{" flag has to be used to show them."}</_components.p>{"\n"}<_components.pre><_components.code className="language-bash">{"$ oc get node\nNAME                 STATUS   ROLES           AGE   VERSION\ncrc-gh9wd-master-0   Ready    master,worker   73d   v1.23.5+9ce5071\n\n\n$ oc get node --show-labels\nNAME                 STATUS   ROLES           AGE   VERSION           LABELS\ncrc-gh9wd-master-0   Ready    master,worker   73d   v1.23.5+9ce5071   beta.kubernetes.io/arch=amd64\n beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=crc-gh9wd-master-0\n kubernetes.io/os=linux,node-role.kubernetes.io/master=,node-role.kubernetes.io/worker=,node.openshift.io/os_id=rhcos\n"}</_components.code></_components.pre>{"\n"}<_components.h2>{"Displaying only selected labels"}</_components.h2>{"\n"}<_components.p>{"As the number of labels and nodes grows, the output becomes unreadable. Usually only some metadata is useful at a time. The displayed labels can be then narrowed just to a few that are helpful."}</_components.p>{"\n"}<_components.p>{"Let's show only architecture and os."}</_components.p>{"\n"}<_components.pre><_components.code className="language-bash">{"$ oc get node -L beta.kubernetes.io/arch,kubernetes.io/os\nNAME                 STATUS   ROLES           AGE   VERSION           ARCH    OS\ncrc-gh9wd-master-0   Ready    master,worker   73d   v1.23.5+9ce5071   amd64   linux\n"}</_components.code></_components.pre>{"\n"}<_components.p>{"I like that the selected labels are shortened and presented in columns. This adds a lot to the readability and makes comparison between nodes a trivial task."}</_components.p>{"\n"}<_components.h2>{"Environment"}</_components.h2>{"\n"}<_components.p>{"The commands were executed using "}<OpenShiftLocal />{" and the following client/server versions of OpenShift."}</_components.p>{"\n"}<KubeBadge client="4.10.9" server="4.10.9" kubernetes="v1.23.5+9ce5071" /></>;
}
function MDXContent(props = {}) {
  const {wrapper: MDXLayout} = Object.assign({}, _provideComponents(), props.components);
  return MDXLayout ? <MDXLayout {...props}><_createMdxContent {...props} /></MDXLayout> : _createMdxContent(props);
}
return {
  default: MDXContent
};
function _missingMdxReference(id, component) {
  throw new Error("Expected " + (component ? "component" : "object") + " `" + id + "` to be defined: you likely forgot to import, pass, or provide it.");
}


With more than one node and more advanced setup than in <s>minishift</s> <s>Code Ready Containers</s> Red Hat OpenShift Local, you can use labels to add metadata to nodes. There are two ways to display later this information.

## Showing all labels of a node

The following command returns all labels of all nodes. Normally the labels are not displayed and the `--show-labels` flag has to be used to show them.

```bash
$ oc get node
NAME                 STATUS   ROLES           AGE   VERSION
crc-gh9wd-master-0   Ready    master,worker   73d   v1.23.5+9ce5071


$ oc get node --show-labels
NAME                 STATUS   ROLES           AGE   VERSION           LABELS
crc-gh9wd-master-0   Ready    master,worker   73d   v1.23.5+9ce5071   beta.kubernetes.io/arch=amd64
 beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=crc-gh9wd-master-0
 kubernetes.io/os=linux,node-role.kubernetes.io/master=,node-role.kubernetes.io/worker=,node.openshift.io/os_id=rhcos
```

## Displaying only selected labels

As the number of labels and nodes grows, the output becomes unreadable. Usually only some metadata is useful at a time. The displayed labels can be then narrowed just to a few that are helpful.

Let's show only architecture and os.

```bash
$ oc get node -L beta.kubernetes.io/arch,kubernetes.io/os
NAME                 STATUS   ROLES           AGE   VERSION           ARCH    OS
crc-gh9wd-master-0   Ready    master,worker   73d   v1.23.5+9ce5071   amd64   linux
```

I like that the selected labels are shortened and presented in columns. This adds a lot to the readability and makes comparison between nodes a trivial task.

## Environment

The commands were executed using <OpenShiftLocal/> and the following client/server versions of OpenShift.

<KubeBadge client='4.10.9' server='4.10.9' kubernetes='v1.23.5+9ce5071'/>



---
index: 2
publishDateTime: '2023-02-18T04:30:00+0200'
isPublished: true
path: /openshift-morsels/02-showing-labels-of-nodes-in-columns
group: openshift-morsels
morsel:
  group: basic-knowhow
categories:
- Morsels
- OpenShift
title: 'Showing labels of nodes in columns'

---
With more than one node and more advanced setup than in <s>minishift</s> <s>Code Ready Containers</s> Red Hat OpenShift Local, you can use labels to add metadata to nodes. There are two ways to display later this information.

## Showing all labels of a node

The following command returns all labels of all nodes. Normally the labels are not displayed and the `--show-labels` flag has to be used to show them.

```bash
$ oc get node
NAME                 STATUS   ROLES           AGE   VERSION
crc-gh9wd-master-0   Ready    master,worker   73d   v1.23.5+9ce5071


$ oc get node --show-labels
NAME                 STATUS   ROLES           AGE   VERSION           LABELS
crc-gh9wd-master-0   Ready    master,worker   73d   v1.23.5+9ce5071   beta.kubernetes.io/arch=amd64
 beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=crc-gh9wd-master-0
 kubernetes.io/os=linux,node-role.kubernetes.io/master=,node-role.kubernetes.io/worker=,node.openshift.io/os_id=rhcos
```

## Displaying only selected labels

As the number of labels and nodes grows, the output becomes unreadable. Usually only some metadata is useful at a time. The displayed labels can be then narrowed just to a few that are helpful.

Let's show only architecture and os.

```bash
$ oc get node -L beta.kubernetes.io/arch,kubernetes.io/os
NAME                 STATUS   ROLES           AGE   VERSION           ARCH    OS
crc-gh9wd-master-0   Ready    master,worker   73d   v1.23.5+9ce5071   amd64   linux
```

I like that the selected labels are shortened and presented in columns. This adds a lot to the readability and makes comparison between nodes a trivial task.

## Environment

The commands were executed using <OpenShiftLocal/> and the following client/server versions of OpenShift.

<KubeBadge client='4.10.9' server='4.10.9' kubernetes='v1.23.5+9ce5071'/>

