Merge pull request #11551 from a-robinson/docs

Improve syntax highlighting for design and devel docs

admission_control_limit_range.md

@@ -128,7 +128,7 @@ The server is updated to be aware of **LimitRange** objects.
 
 The constraints are only enforced if the kube-apiserver is started as follows:
 
-```
+```console
 $ kube-apiserver -admission_control=LimitRanger
 ```
 
@@ -140,7 +140,7 @@ kubectl is modified to support the **LimitRange** resource.
 
 For example,
 
-```shell
+```console
 $ kubectl namespace myspace
 $ kubectl create -f docs/user-guide/limitrange/limits.yaml
 $ kubectl get limits

admission_control_resource_quota.md

@@ -140,7 +140,7 @@ The server is updated to be aware of **ResourceQuota** objects.
 
 The quota is only enforced if the kube-apiserver is started as follows:
 
-```
+```console
 $ kube-apiserver -admission_control=ResourceQuota
 ```
 
@@ -167,7 +167,7 @@ kubectl is modified to support the **ResourceQuota** resource.
 
 For example,
 
-```
+```console
 $ kubectl namespace myspace
 $ kubectl create -f docs/user-guide/resourcequota/quota.yaml
 $ kubectl get quota

clustering/README.md

@@ -34,7 +34,7 @@ This directory contains diagrams for the clustering design doc.
 
 This depends on the `seqdiag` [utility](http://blockdiag.com/en/seqdiag/index.html).  Assuming you have a non-borked python install, this should be installable with
 
-```bash
+```sh
 pip install seqdiag
 ```
 
@@ -44,7 +44,7 @@ Just call `make` to regenerate the diagrams.
 
 If you are on a Mac or your pip install is messed up, you can easily build with docker.
 
-```
+```sh
 make docker
 ```
 

event_compression.md

@@ -90,7 +90,7 @@ Each binary that generates events:
 
 Sample kubectl output
 
-```
+```console
 FIRSTSEEN                         LASTSEEN                          COUNT               NAME                                          KIND                SUBOBJECT                                REASON              SOURCE                                                  MESSAGE
 Thu, 12 Feb 2015 01:13:02 +0000   Thu, 12 Feb 2015 01:13:02 +0000   1                   kubernetes-minion-4.c.saad-dev-vms.internal   Minion                                                       starting            {kubelet kubernetes-minion-4.c.saad-dev-vms.internal}   Starting kubelet.
 Thu, 12 Feb 2015 01:13:09 +0000   Thu, 12 Feb 2015 01:13:09 +0000   1                   kubernetes-minion-1.c.saad-dev-vms.internal   Minion                                                       starting            {kubelet kubernetes-minion-1.c.saad-dev-vms.internal}   Starting kubelet.

namespaces.md

@@ -74,7 +74,7 @@ The Namespace provides a unique scope for:
 
 A *Namespace* defines a logically named group for multiple *Kind*s of resources.
 
-```
+```go
 type Namespace struct {
   TypeMeta   `json:",inline"`
   ObjectMeta `json:"metadata,omitempty"`
@@ -125,7 +125,7 @@ See [Admission control: Resource Quota](admission_control_resource_quota.md)
 
 Upon creation of a *Namespace*, the creator may provide a list of *Finalizer* objects.
 
-```
+```go
 type FinalizerName string
 
 // These are internal finalizers to Kubernetes, must be qualified name unless defined here
@@ -154,7 +154,7 @@ set by default.
 
 A *Namespace* may exist in the following phases.
 
-```
+```go
 type NamespacePhase string
 const(
   NamespaceActive NamespacePhase = "Active"
@@ -262,7 +262,7 @@ to take part in Namespace termination.
 
 OpenShift creates a Namespace in Kubernetes
 
-```
+```json
 {
   "apiVersion":"v1",
   "kind": "Namespace",
@@ -287,7 +287,7 @@ own storage associated with the "development" namespace unknown to Kubernetes.
 
 User deletes the Namespace in Kubernetes, and Namespace now has following state:
 
-```
+```json
 {
   "apiVersion":"v1",
   "kind": "Namespace",
@@ -312,7 +312,7 @@ and begins to terminate all of the content in the namespace that it knows about.
 success, it executes a *finalize* action that modifies the *Namespace* by
 removing *kubernetes* from the list of finalizers:
 
-```
+```json
 {
   "apiVersion":"v1",
   "kind": "Namespace",
@@ -340,7 +340,7 @@ from the list of finalizers.
 
 This results in the following state:
 
-```
+```json
 {
   "apiVersion":"v1",
   "kind": "Namespace",

networking.md

@@ -131,7 +131,7 @@ differentiate it from `docker0`) is set up outside of Docker proper.
 
 Example of GCE's advanced routing rules:
 
-```
+```sh
 gcloud compute routes add "${MINION_NAMES[$i]}" \
   --project "${PROJECT}" \
   --destination-range "${MINION_IP_RANGES[$i]}" \

persistent-storage.md

@@ -127,7 +127,7 @@ Events that communicate the state of a mounted volume are left to the volume plu
 
 An administrator provisions storage by posting PVs to the API.  Various way to automate this task can be scripted.  Dynamic provisioning is a future feature that can maintain levels of PVs.
 
-```
+```yaml
 POST:
 
 kind: PersistentVolume
@@ -140,15 +140,13 @@ spec:
   persistentDisk:
     pdName: "abc123"
     fsType: "ext4"
+```
 
---------------------------------------------------
+```console
-
+$ kubectl get pv
-kubectl get pv
 
 NAME                LABELS              CAPACITY            ACCESSMODES         STATUS              CLAIM              REASON
 pv0001              map[]               10737418240         RWO                 Pending    
-
-
 ```
 
 #### Users request storage
@@ -157,9 +155,9 @@ A user requests storage by posting a PVC to the API.  Their request contains the
 
 The user must be within a namespace to create PVCs.
 
-```
+```yaml
-
 POST: 
+
 kind: PersistentVolumeClaim
 apiVersion: v1
 metadata:
@@ -170,15 +168,13 @@ spec:
   resources:
     requests:
       storage: 3
+```
 
---------------------------------------------------
+```console
-
+$ kubectl get pvc
-kubectl get pvc
-
 
 NAME                LABELS              STATUS              VOLUME
 myclaim-1           map[]               pending                         
-
 ```
 
 
@@ -186,9 +182,8 @@ myclaim-1           map[]               pending
 
   The ```PersistentVolumeClaimBinder``` attempts to find an available volume that most closely matches the user's request.  If one exists, they are bound by putting a reference on the PV to the PVC.  Requests can go unfulfilled if a suitable match is not found.
 
-```
+```console
-
+$ kubectl get pv
-kubectl get pv
 
 NAME                LABELS              CAPACITY            ACCESSMODES         STATUS              CLAIM                                                        REASON
 pv0001              map[]               10737418240         RWO                 Bound               myclaim-1 / f4b3d283-c0ef-11e4-8be4-80e6500a981e
@@ -198,8 +193,6 @@ kubectl get pvc
 
 NAME                LABELS              STATUS              VOLUME
 myclaim-1           map[]               Bound               b16e91d6-c0ef-11e4-8be4-80e6500a981e
-
-
 ```
 
 #### Claim usage
@@ -208,7 +201,7 @@ The claim holder can use their claim as a volume.  The ```PersistentVolumeClaimV
 
 The claim holder owns the claim and its data for as long as the claim exists.  The pod using the claim can be deleted, but the claim remains in the user's namespace.  It can be used again and again by many pods.
 
-```
+```yaml
 POST: 
 
 kind: Pod
@@ -229,17 +222,14 @@ spec:
          accessMode: ReadWriteOnce
          claimRef:
            name: myclaim-1
-
 ```
 
 #### Releasing a claim and Recycling a volume
 
 When a claim holder is finished with their data, they can delete their claim.
 
-```
+```console
-
+$ kubectl delete pvc myclaim-1
-kubectl delete pvc myclaim-1
-
 ```
 
 The ```PersistentVolumeClaimBinder``` will reconcile this by removing the claim reference from the PV and change the PVs status to 'Released'.   

resources.md

@@ -89,7 +89,7 @@ Both users and a number of system components, such as schedulers, (horizontal) a
 
 Resource requirements for a container or pod should have the following form:
 
-```
+```yaml
 resourceRequirementSpec: [
   request:   [ cpu: 2.5, memory: "40Mi" ],
   limit:     [ cpu: 4.0, memory: "99Mi" ],
@@ -103,7 +103,7 @@ Where:
 
 Total capacity for a node should have a similar structure:
 
-```
+```yaml
 resourceCapacitySpec: [
   total:     [ cpu: 12,  memory: "128Gi" ]
 ]
@@ -159,15 +159,16 @@ rather than decimal ones: "64MiB" rather than "64MB".
 
 A resource type may have an associated read-only ResourceType structure, that contains metadata about the type.  For example:
 
-```
+```yaml
 resourceTypes: [
   "kubernetes.io/memory": [
     isCompressible: false, ... 
   ]
   "kubernetes.io/cpu": [
-    isCompressible: true, internalScaleExponent: 3, ...
+    isCompressible: true,
+    internalScaleExponent: 3, ...
   ]
-  "kubernetes.io/disk-space": [ ... }
+  "kubernetes.io/disk-space": [ ... ]
 ]
 ```
 
@@ -195,7 +196,7 @@ Because resource usage and related metrics change continuously, need to be track
 
 Singleton values for observed and predicted future usage will rapidly prove inadequate, so we will support the following structure for extended usage information: 
 
-```
+```yaml
 resourceStatus: [
   usage:     [ cpu: <CPU-info>, memory: <memory-info> ],
   maxusage:  [ cpu: <CPU-info>, memory: <memory-info> ],
@@ -205,7 +206,7 @@ resourceStatus: [
 
 where a `<CPU-info>` or `<memory-info>` structure looks like this:
 
-```
+```yaml
 {
     mean: <value>    # arithmetic mean
     max: <value>     # minimum value
@@ -218,7 +219,7 @@ where a `<CPU-info>` or `<memory-info>` structure looks like this:
       "99.9": <99.9th-percentile-value>,
       ...
     ]
- }
+}
 ```
 
 All parts of this structure are optional, although we strongly encourage including quantities for 50, 90, 95, 99, 99.5, and 99.9 percentiles.  _[In practice, it will be important to include additional info such as the length of the time window over which the averages are calculated, the confidence level, and information-quality metrics such as the number of dropped or discarded data points.]_

simple-rolling-update.md

@@ -62,7 +62,7 @@ To facilitate recovery in the case of a crash of the updating process itself, we
 
 Recovery is achieved by issuing the same command again:
 
-```
+```sh
 kubectl rolling-update foo [foo-v2] --image=myimage:v2
 ```