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Merge pull request #6432 from brendandburns/hyperkube

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Add a docker image for hyperkube, and instructions on how to use.
This commit is contained in:
Robert Bailey 2015-04-06 11:23:40 -07:00
commit 05fd6fe619
5 changed files with 143 additions and 0 deletions
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9
cluster/images/hyperkube/Dockerfile Normal file
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FROM google/debian:wheezy
RUN apt-get update
RUN apt-get -yy -q install iptables
COPY hyperkube /hyperkube
RUN chmod a+rx /hyperkube
COPY master.json /etc/kubernetes/manifests/master.json

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cluster/images/hyperkube/Makefile Normal file
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# build the hyperkube image.
VERSION=v0.14.1
all:
# cp ../../../_output/release-stage/server/linux-amd64/kubernetes/server/bin/hyperkube ./
docker build -t gcr.io/google_containers/hyperkube:${VERSION} .
gcloud preview docker push gcr.io/google_containers/hyperkube:${VERSION}
.PHONY: all

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cluster/images/hyperkube/master.json Normal file
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{
"apiVersion": "v1beta3",
"kind": "Pod",
"metadata": {"name":"nginx"},
"spec":{
"hostNetwork": true,
"containers":[
{
"name": "controller-manager",
"image": "gcr.io/google_containers/hyperkube:v0.14.1",
"command": [
"/hyperkube",
"controller-manager",
"--master=127.0.0.1:8080",
"--machines=127.0.0.1",
"--sync_nodes=true",
"--v=2"
]
},
{
"name": "apiserver",
"image": "gcr.io/google_containers/hyperkube:v0.14.1",
"command": [
"/hyperkube",
"apiserver",
"--portal_net=10.0.0.1/24",
"--address=127.0.0.1",
"--etcd_servers=http://127.0.0.1:4001",
"--cluster_name=kubernetes",
"--v=2"
]
},
{
"name": "scheduler",
"image": "gcr.io/google_containers/hyperkube:v0.14.1",
"command": [
"/hyperkube",
"scheduler",
"--master=127.0.0.1:8080",
"--v=2"
]
}
]
}
}

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docs/getting-started-guides/README.md
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If you are not sure what OSes and infrastructure is supported, the table below lists all the combinations which have
been tested recently.
For the easiest "kick the tires" experience, please try the [local docker](docker.md) guide.
If you are considering contributing a new guide, please read the
[guidelines](../../docs/devel/writing-a-getting-started-guide.md).
@ -23,6 +25,7 @@ Vmware | CoreOS | CoreOS | flannel | [docs](../../docs/getting
Azure | Saltstack | Ubuntu | OpenVPN | [docs](../../docs/getting-started-guides/azure.md) | Community (@jeffmendoza) |
Bare-metal | custom | Ubuntu | _none_ | [docs](../../docs/getting-started-guides/ubuntu_single_node.md) | Community (@jainvipin) |
Bare-metal | custom | Ubuntu Cluster | flannel | [docs](../../docs/getting-started-guides/ubuntu_multinodes_cluster.md) | Community (@resouer @WIZARD-CXY) | use k8s version 0.12.0
Docker | custom | N/A | local | [docs](docker.md) | Project (@brendandburns) | Tested @ 0.14.1 |
Local | | | _none_ | [docs](../../docs/getting-started-guides/locally.md) | Community (@preillyme) |
Ovirt | | | | [docs](../../docs/getting-started-guides/ovirt.md) | Inactive |
Rackspace | CoreOS | CoreOS | Rackspace | [docs](../../docs/getting-started-guides/rackspace.md) | Inactive |

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docs/getting-started-guides/docker.md Normal file
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## Running kubernetes locally via Docker
The following instructions show you how to set up a simple, single node kubernetes cluster using Docker.
### Step One: Run etcd
```sh
docker run --net=host -d kubernetes/etcd:2.0.5.1 /usr/local/bin/etcd --addr=127.0.0.1:4001 --bind-addr=0.0.0.0:4001 --data-dir=/var/etcd/data
```
### Step Two: Run the master
```sh
docker run --net=host -d -v /var/run/docker.sock:/var/run/docker.sock gcr.io/google_containers/hyperkube:v0.14.1 /hyperkube kubelet --api_servers=http://localhost:8080 --v=2 --address=0.0.0.0 --enable_server --hostname_override=127.0.0.1 --config=/etc/kubernetes/manifests
```
This actually runs the kubelet, which in turn runs a [pod](https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/pods.md) that contains the other master components.
### Step Three: Run the service proxy
*Note, this could be combined with master above, but it requires --privileged for iptables manipulation*
```sh
docker run -d --net=host --privileged gcr.io/google_containers/hyperkube:v0.14.1 /hyperkube proxy --master=http://127.0.0.1:8080 --v=2
```
### Test it out
At this point you should have a running kubernetes cluster. You can test this by downloading the kubectl
binary
([OS X](http://storage.googleapis.com/kubernetes-release/release/v0.14.1/bin/darwin/amd64/kubectl))
([linux](http://storage.googleapis.com/kubernetes-release/release/v0.14.1/bin/linux/amd64/kubectl))
*Note:*
On OS/X you will need to set up port forwarding via ssh:
```sh
boot2docker ssh -L8080:localhost:8080
```
List the nodes in your cluster by running::
```sh
kubectl get nodes
```
This should print:
```
NAME LABELS STATUS
127.0.0.1 <none> Ready
```
If you are running different kubernetes clusters, you may need to specify ```-s http://localhost:8080``` to select the local cluster.
### Run an application
```sh
kubectl -s http://localhost:8080 run-container nginx --image=nginx --port=80
```
now run ```docker ps``` you should see nginx running. You may need to wait a few minutes for the image to get pulled.
### Expose it as a service:
```sh
kubectl expose rc nginx --port=80
```
This should print:
```
NAME LABELS SELECTOR IP PORT(S)
nginx <none> run-container=nginx <ip-addr> 80/TCP
```
Hit the webserver:
```sh
curl <insert-ip-from-above-here>
```
Note that you will need run this curl command on your boot2docker VM if you are running on OS X.
### A note on turning down your cluster
Many of these containers run under the management of the ```kubelet``` binary, which attempts to keep containers running, even if they fail. So, in order to turn down
the cluster, you need to first kill the kubelet container, and then any other containers.