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Update multi-node docker instructions:

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* Update etcd and add a warning about Docker 1.7.0
   * Update kubernetes to 0.21.2, Flannel to 0.5.0
   * Remove --sync-nodes which is removed.
This commit is contained in:
Brendan Burns
2015-07-13 20:58:33 -07:00
parent bdbcbe2e2f
commit ab4448a0d6
5 changed files with 25 additions and 12 deletions
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18
docs/getting-started-guides/docker-multinode/master.md
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@@ -22,6 +22,10 @@ There are two main phases to installing the master:
## Setting up flanneld and etcd
_Note_:
There is a [bug](https://github.com/docker/docker/issues/14106) in Docker 1.7.0 that prevents this from working correctly.
Please install Docker 1.6.2 or wait for Docker 1.7.1.
### Setup Docker-Bootstrap
We're going to use ```flannel``` to set up networking between Docker daemons. Flannel itself (and etcd on which it relies) will run inside of
Docker containers themselves. To achieve this, we need a separate "bootstrap" instance of the Docker daemon. This daemon will be started with
@@ -40,13 +44,13 @@ across reboots and failures.
### Startup etcd for flannel and the API server to use
Run:
```
sudo docker -H unix:///var/run/docker-bootstrap.sock run --net=host -d gcr.io/google_containers/etcd:2.0.9 /usr/local/bin/etcd --addr=127.0.0.1:4001 --bind-addr=0.0.0.0:4001 --data-dir=/var/etcd/data
sudo docker -H unix:///var/run/docker-bootstrap.sock run --net=host -d gcr.io/google_containers/etcd:2.0.12 /usr/local/bin/etcd --addr=127.0.0.1:4001 --bind-addr=0.0.0.0:4001 --data-dir=/var/etcd/data
```
Next, you need to set a CIDR range for flannel. This CIDR should be chosen to be non-overlapping with any existing network you are using:
```sh
sudo docker -H unix:///var/run/docker-bootstrap.sock run --net=host gcr.io/google_containers/etcd:2.0.9 etcdctl set /coreos.com/network/config '{ "Network": "10.1.0.0/16" }'
sudo docker -H unix:///var/run/docker-bootstrap.sock run --net=host gcr.io/google_containers/etcd:2.0.12 etcdctl set /coreos.com/network/config '{ "Network": "10.1.0.0/16" }'
```
@@ -76,7 +80,7 @@ or it may be something else.
Now run flanneld itself:
```sh
sudo docker -H unix:///var/run/docker-bootstrap.sock run -d --net=host --privileged -v /dev/net:/dev/net quay.io/coreos/flannel:0.3.0
sudo docker -H unix:///var/run/docker-bootstrap.sock run -d --net=host --privileged -v /dev/net:/dev/net quay.io/coreos/flannel:0.5.0
```
The previous command should have printed a really long hash, copy this hash.
@@ -122,20 +126,20 @@ systemctl start docker
Ok, now that your networking is set up, you can startup Kubernetes, this is the same as the single-node case, we will use the "main" instance of the Docker daemon for the Kubernetes components.
```sh
sudo docker run --net=host -d -v /var/run/docker.sock:/var/run/docker.sock gcr.io/google_containers/hyperkube:v0.18.2 /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-multi
sudo docker run --net=host -d -v /var/run/docker.sock:/var/run/docker.sock gcr.io/google_containers/hyperkube:v0.21.2 /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-multi
```
### Also run the service proxy
```sh
sudo docker run -d --net=host --privileged gcr.io/google_containers/hyperkube:v0.18.2 /hyperkube proxy --master=http://127.0.0.1:8080 --v=2
sudo docker run -d --net=host --privileged gcr.io/google_containers/hyperkube:v0.21.2 /hyperkube proxy --master=http://127.0.0.1:8080 --v=2
```
### Test it out
At this point, you should have a functioning 1-node cluster. Let's test it out!
Download the kubectl binary
([OS X](http://storage.googleapis.com/kubernetes-release/release/v0.18.2/bin/darwin/amd64/kubectl))
([linux](http://storage.googleapis.com/kubernetes-release/release/v0.18.2/bin/linux/amd64/kubectl))
([OS X](http://storage.googleapis.com/kubernetes-release/release/v0.21.2/bin/darwin/amd64/kubectl))
([linux](http://storage.googleapis.com/kubernetes-release/release/v0.21.2/bin/linux/amd64/kubectl))
List the nodes