Merge pull request kubernetes#6531 from ConnorDoyle/rm-oir

Ported OIR tasks to use Extended Resources.

Author: tengqm

_data/tasks.yml

@@ -15,7 +15,7 @@ toc:
   - docs/tasks/configure-pod-container/assign-cpu-resource.md
   - docs/tasks/configure-pod-container/quality-service-pod.md
   - docs/tasks/configure-pod-container/assign-cpu-ram-container.md
-  - docs/tasks/configure-pod-container/opaque-integer-resource.md
+  - docs/tasks/configure-pod-container/extended-resource.md
   - docs/tasks/configure-pod-container/configure-volume-storage.md
   - docs/tasks/configure-pod-container/configure-persistent-volume-storage.md
   - docs/tasks/configure-pod-container/configure-projected-volume-storage.md
@@ -128,7 +128,7 @@ toc:
     - docs/tasks/administer-cluster/quota-memory-cpu-namespace.md
     - docs/tasks/administer-cluster/quota-pod-namespace.md
     - docs/tasks/administer-cluster/quota-api-object.md
-    - docs/tasks/administer-cluster/opaque-integer-resource-node.md
+    - docs/tasks/administer-cluster/extended-resource-node.md
     - docs/tasks/administer-cluster/cpu-management-policies.md
   - docs/tasks/administer-cluster/access-cluster-api.md
   - docs/tasks/administer-cluster/access-cluster-services.md

docs/tasks/administer-cluster/opaque-integer-resource-node.md renamed to docs/tasks/administer-cluster/extended-resource-node.md

@@ -1,15 +1,15 @@
 ---
-title: Advertise Opaque Integer Resources for a Node
+title: Advertise Extended Resources for a Node
 ---
 
 
 {% capture overview %}
 
-This page shows how to specify opaque integer resources for a Node.
-Opaque integer resources allow cluster administrators to advertise node-level
+This page shows how to specify extended resources for a Node.
+Extended resources allow cluster administrators to advertise node-level
 resources that would otherwise be unknown to Kubernetes.
 
-{% include feature-state-deprecated.md %}
+{% include feature-state-stable.md %}
 
 {% endcapture %}
 
@@ -31,9 +31,9 @@ kubectl get nodes
 
 Choose one of your Nodes to use for this exercise.
 
-## Advertise a new opaque integer resource on one of your Nodes
+## Advertise a new extended resource on one of your Nodes
 
-To advertise a new opaque integer resource on a Node, send an HTTP PATCH request to
+To advertise a new extended resource on a Node, send an HTTP PATCH request to
 the Kubernetes API server. For example, suppose one of your Nodes has four dongles
 attached. Here's an example of a PATCH request that advertises four dongle resources
 for your Node.
@@ -47,7 +47,7 @@ Host: k8s-master:8080
 [
   {
     "op": "add",
-    "path": "/status/capacity/pod.alpha.kubernetes.io~1opaque-int-resource-dongle",
+    "path": "/status/capacity/example.com~1dongle",
     "value": "4"
   }
 ]
@@ -69,7 +69,7 @@ Replace `<your-node-name>` with the name of your Node:
 ```shell
 curl --header "Content-Type: application/json-patch+json" \
 --request PATCH \
---data '[{"op": "add", "path": "/status/capacity/pod.alpha.kubernetes.io~1opaque-int-resource-dongle", "value": "4"}]' \
+--data '[{"op": "add", "path": "/status/capacity/example.com~1dongle", "value": "4"}]' \
 http://localhost:8001/api/v1/nodes/<your-node-name>/status
 ```
 
@@ -85,7 +85,7 @@ The output shows that the Node has a capacity of 4 dongles:
   "alpha.kubernetes.io/nvidia-gpu": "0",
   "cpu": "2",
   "memory": "2049008Ki",
-  "pod.alpha.kubernetes.io/opaque-int-resource-dongle": "4",
+  "example.com/dongle": "4",
 ```
 
 Describe your Node:
@@ -98,53 +98,52 @@ Once again, the output shows the dongle resource:
 
 ```yaml
 Capacity:
- alpha.kubernetes.io/nvidia-gpu:      0
- cpu:             2
- memory:            2049008Ki
- pod.alpha.kubernetes.io/opaque-int-resource-dongle:  4
+ alpha.kubernetes.io/nvidia-gpu:  0
+ cpu:  2
+ memory:  2049008Ki
+ example.com/dongle:  4
 ```
 
 Now, application developers can create Pods that request a certain
 number of dongles. See
-[Assign Opaque Integer Resources to a Container](/docs/tasks/configure-pod-container/opaque-integer-resource/).
+[Assign Extended Resources to a Container](/docs/tasks/configure-pod-container/extended-resource/).
 
 ## Discussion
 
-Opaque integer resources are similar to memory and CPU resources. For example,
+Extended resources are similar to memory and CPU resources. For example,
 just as  a Node has a certain amount of memory and CPU to be shared by all components
 running on the Node, it can have a certain number of dongles to be shared
 by all components running on the Node. And just as application developers
 can create Pods that request a certain amount of memory and CPU, they can
 create Pods that request a certain number of dongles.
 
-Opaque integer resources are called opaque because Kubernetes does not
+Extended resources are opaque to Kubernetes; Kubernetes does not
 know anything about what they are. Kubernetes knows only that a Node
-has a certain number of them. They are called integer resources because
-they must be advertised in integer amounts. For example, a Node can advertise
-four dongles, but not 4.5 dongles.
+has a certain number of them. Extended resources must be advertised in integer
+amounts. For example, a Node can advertise four dongles, but not 4.5 dongles.
 
 ### Storage example
 
 Suppose a Node has 800 GiB of a special kind of disk storage. You could
-create a name for the special storage, say opaque-int-resource-special-storage.
+create a name for the special storage, say example.com/special-storage.
 Then you could advertise it in chunks of a certain size, say 100 GiB. In that case,
 your Node would advertise that it has eight resources of type
-opaque-int-resource-special-storage.
+example.com/special-storage.
 
 ```yaml
 Capacity:
  ...
- pod.alpha.kubernetes.io/opaque-int-resource-special-storage:  8
+ example.com/special-storage: 8
 ```
 
 If you want to allow arbitrary requests for special storage, you
 could advertise special storage in chunks of size 1 byte. In that case, you would advertise
-800Gi resources of type opaque-int-resource-special-storage.
+800Gi resources of type example.com/special-storage.
 
 ```yaml
 Capacity:
  ...
- pod.alpha.kubernetes.io/opaque-int-resource-special-storage:  800Gi
+ example.com/special-storage:  800Gi
 ```
 
 Then a Container could request any number of bytes of special storage, up to 800Gi.
@@ -162,7 +161,7 @@ Host: k8s-master:8080
 [
   {
     "op": "remove",
-    "path": "/status/capacity/pod.alpha.kubernetes.io~1opaque-int-resource-dongle",
+    "path": "/status/capacity/example.com~1dongle",
   }
 ]
 ```
@@ -179,7 +178,7 @@ Replace `<your-node-name>` with the name of your Node:
 ```shell
 curl --header "Content-Type: application/json-patch+json" \
 --request PATCH \
---data '[{"op": "remove", "path": "/status/capacity/pod.alpha.kubernetes.io~1opaque-int-resource-dongle"}]' \
+--data '[{"op": "remove", "path": "/status/capacity/example.com~1dongle"}]' \
 http://localhost:8001/api/v1/nodes/<your-node-name>/status
 ```
 
@@ -196,7 +195,7 @@ kubectl describe node <your-node-name> | grep dongle
 
 ### For application developers
 
-* [Assign Opaque Integer Resources to a Container](/docs/tasks/configure-pod-container/opaque-integer-resource/)
+* [Assign Extended Resources to a Container](/docs/tasks/configure-pod-container/extended-resource/)
 
 ### For cluster administrators
 

docs/tasks/configure-pod-container/oir-pod.yaml renamed to docs/tasks/configure-pod-container/extended-resource-pod-2.yaml

@@ -1,11 +1,11 @@
 apiVersion: v1
 kind: Pod
 metadata:
-  name: oir-demo
+  name: extended-resource-demo-2
 spec:
   containers:
-  - name: oir-demo-ctr
+  - name: extended-resource-demo-2-ctr
     image: nginx
     resources:
       requests:
-        pod.alpha.kubernetes.io/opaque-int-resource-dongle: 3
+        example.com/dongle: 2

docs/tasks/configure-pod-container/extended-resource-pod.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: extended-resource-demo
+spec:
+  containers:
+  - name: extended-resource-demo-ctr
+    image: nginx
+    resources:
+      requests:
+        example.com/dongle: 3

docs/tasks/configure-pod-container/opaque-integer-resource.md renamed to docs/tasks/configure-pod-container/extended-resource.md

@@ -1,12 +1,12 @@
 ---
-title: Assign Opaque Integer Resources to a Container
+title: Assign Extended Resources to a Container
 ---
 
 {% capture overview %}
 
-This page shows how to assign opaque integer resources to a Container.
+This page shows how to assign extended resources to a Container.
 
-{% include feature-state-deprecated.md %}
+{% include feature-state-stable.md %}
 
 {% endcapture %}
 
@@ -16,70 +16,73 @@ This page shows how to assign opaque integer resources to a Container.
 {% include task-tutorial-prereqs.md %}
 
 Before you do this exercise, do the exercise in
-[Advertise Opaque Integer Resources for a Node](/docs/tasks/administer-cluster/opaque-integer-resource-node/).
+[Advertise Extended Resources for a Node](/docs/tasks/administer-cluster/extended-resource-node/).
 That will configure one of your Nodes to advertise a dongle resource.
 
 {% endcapture %}
 
 
 {% capture steps %}
 
-## Assign an opaque integer resource to a Pod
+## Assign an extended resource to a Pod
 
-To request an opaque integer resource, include the `resources:requests` field in your
-Container manifest. Opaque integer resources have the prefix `pod.alpha.kubernetes.io/opaque-int-resource-`.
+To request an extended resource, include the `resources:requests` field in your
+Container manifest. Extended resources are fully qualified with any domain outside of
+`*.kubernetes.io/`. Valid extended resource names have the form `example.com/foo` where
+`example.com` is replaced with your organization's domain and `foo` is a
+descriptive resource name.
 
 Here is the configuration file for a Pod that has one Container:
 
-{% include code.html language="yaml" file="oir-pod.yaml" ghlink="/docs/tasks/configure-pod-container/oir-pod.yaml" %}
+{% include code.html language="yaml" file="extended-resource-pod.yaml" ghlink="/docs/tasks/configure-pod-container/extended-resource-pod.yaml" %}
 
 In the configuration file, you can see that the Container requests 3 dongles.
 
 Create a Pod:
 
 ```shell
-kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/oir-pod.yaml
+kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/extended-resource-pod.yaml
 ```
 
 Verify that the Pod is running:
 
 ```shell
-kubectl get pod oir-demo
+kubectl get pod extended-resource-demo
 ```
 
 Describe the Pod:
 
 ```shell
-kubectl describe pod oir-demo
+kubectl describe pod extended-resource-demo
 ```
 
 The output shows dongle requests:
 
 ```yaml
 Requests:
-  pod.alpha.kubernetes.io/opaque-int-resource-dongle: 3
+  example.com/dongle: 3
 ```
 
 ## Attempt to create a second Pod
 
 Here is the configuration file for a Pod that has one Container. The Container requests
 two dongles.
 
-{% include code.html language="yaml" file="oir-pod-2.yaml" ghlink="/docs/tasks/configure-pod-container/oir-pod-2.yaml" %}
+{% include code.html language="yaml" file="extended-resource-pod-2.yaml" ghlink="/docs/tasks/configure-pod-container/extended-resource-pod-2.yaml" %}
 
 Kubernetes will not be able to satisfy the request for two dongles, because the first Pod
 used three of the four available dongles.
 
 Attempt to create a Pod:
 
 ```shell
-kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/oir-pod-2.yaml
+kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/extended-resource-pod-2.yaml
 ```
 
 Describe the Pod
 
 ```shell
-kubectl describe pod oir-demo-2
+kubectl describe pod extended-resource-demo-2
 ```
 
 The output shows that the Pod cannot be scheduled, because there is no Node that has
@@ -93,30 +96,30 @@ Conditions:
 ...
 Events:
   ...
-  ... Warning   FailedScheduling  pod (oir-demo-2) failed to fit in any node
-fit failure summary on nodes : Insufficient pod.alpha.kubernetes.io/opaque-int-resource-dongle (1)
+  ... Warning   FailedScheduling  pod (extended-resource-demo-2) failed to fit in any node
+fit failure summary on nodes : Insufficient example.com/dongle (1)
 ```
 
 View the Pod status:
 
 ```shell
-kubectl get pod oir-demo-2
+kubectl get pod extended-resource-demo-2
 ```
 
 The output shows that the Pod was created, but not scheduled to run on a Node.
 It has a status of Pending:
 
 ```yaml
-NAME         READY     STATUS    RESTARTS   AGE
-oir-demo-2   0/1       Pending   0          6m
+NAME                       READY     STATUS    RESTARTS   AGE
+extended-resource-demo-2   0/1       Pending   0          6m
 ```
 
 ## Clean up
 
 Delete the Pod that you created for this exercise:
 
 ```shell
-kubectl delete pod oir-demo-2
+kubectl delete pod extended-resource-demo-2
 ```
 
 {% endcapture %}
@@ -130,7 +133,7 @@ kubectl delete pod oir-demo-2
 
 ### For cluster administrators
 
-* [Advertise Opaque Integer Resources for a Node](/docs/tasks/administer-cluster/opaque-integer-resource-node/)
+* [Advertise Extended Resources for a Node](/docs/tasks/administer-cluster/extended-resource-node/)
 
 {% endcapture %}