Merge branch 'master' into release-1.8
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@@ -174,7 +174,7 @@ From within a pod the recommended ways to connect to API are:
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in any container of the pod can access it. See this [example of using kubectl proxy
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in a pod](https://github.com/kubernetes/kubernetes/tree/{{page.githubbranch}}/examples/kubectl-container/).
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- use the Go client library, and create a client using the `rest.InClusterConfig()` and `kubernetes.NewForConfig()` functions.
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They handle locating and authenticating to the apiserver. [example](https://git.k8s.io/client-go/examples/in-cluster/main.go)
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They handle locating and authenticating to the apiserver. [example](https://git.k8s.io/client-go/examples/in-cluster-client-configuration/main.go)
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In each case, the credentials of the pod are used to communicate securely with the apiserver.
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@@ -35,50 +35,50 @@ restarts. Here is the configuration file for the Pod:
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1. Create the Pod:
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kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/pod-redis.yaml
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kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/pod-redis.yaml
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1. Verify that the Pod's Container is running, and then watch for changes to
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the Pod:
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kubectl get --watch pod redis
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kubectl get --watch pod redis
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The output looks like this:
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NAME READY STATUS RESTARTS AGE
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redis 1/1 Running 0 13s
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NAME READY STATUS RESTARTS AGE
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redis 1/1 Running 0 13s
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1. In another terminal, get a shell to the running Container:
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kubectl exec -it redis -- /bin/bash
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kubectl exec -it redis -- /bin/bash
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1. In your shell, go to `/data/redis`, and create a file:
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root@redis:/data/redis# echo Hello > test-file
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root@redis:/data/redis# echo Hello > test-file
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1. In your shell, list the running processes:
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root@redis:/data/redis# ps aux
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root@redis:/data/redis# ps aux
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The output is similar to this:
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USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
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redis 1 0.1 0.1 33308 3828 ? Ssl 00:46 0:00 redis-server *:6379
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root 12 0.0 0.0 20228 3020 ? Ss 00:47 0:00 /bin/bash
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root 15 0.0 0.0 17500 2072 ? R+ 00:48 0:00 ps aux
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USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
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redis 1 0.1 0.1 33308 3828 ? Ssl 00:46 0:00 redis-server *:6379
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root 12 0.0 0.0 20228 3020 ? Ss 00:47 0:00 /bin/bash
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root 15 0.0 0.0 17500 2072 ? R+ 00:48 0:00 ps aux
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1. In your shell, kill the redis process:
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root@redis:/data/redis# kill <pid>
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root@redis:/data/redis# kill <pid>
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where `<pid>` is the redis process ID (PID).
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1. In your original terminal, watch for changes to the redis Pod. Eventually,
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you will see something like this:
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NAME READY STATUS RESTARTS AGE
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redis 1/1 Running 0 13s
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redis 0/1 Completed 0 6m
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redis 1/1 Running 1 6m
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NAME READY STATUS RESTARTS AGE
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redis 1/1 Running 0 13s
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redis 0/1 Completed 0 6m
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redis 1/1 Running 1 6m
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At this point, the Container has terminated and restarted. This is because the
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redis Pod has a
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@@ -87,7 +87,7 @@ of `Always`.
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1. Get a shell into the restarted Container:
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kubectl exec -it redis -- /bin/bash
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kubectl exec -it redis -- /bin/bash
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1. In your shell, goto `/data/redis`, and verify that `test-file` is still there.
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@@ -61,6 +61,15 @@ sudo cp kubernetes/client/bin/kubectl /usr/local/bin
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sudo chmod +x /usr/local/bin/kubectl
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```
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### Install with snap on Ubuntu
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kubefed is available as a [snap](https://snapcraft.io/) application.
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1. If you are on Ubuntu or one of other Linux distributions that support [snap](https://snapcraft.io/docs/core/install) package manager, you can install with:
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sudo snap install kubefed --classic
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2. Run `kubefed version` to verify that the verison you've installed is sufficiently up-to-date.
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## Choosing a host cluster.
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@@ -143,7 +143,7 @@ spec:
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## Future
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- Support for hardware accelerators is in it's early stages in Kubernetes.
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- Support for hardware accelerators is in its early stages in Kubernetes.
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- GPUs and other accelerators will soon be a native compute resource across the system.
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- Better APIs will be introduced to provision and consume accelerators in a scalable manner.
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- Kubernetes will automatically ensure that applications consuming GPUs gets the best possible performance.
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