You can either build a release from sources or download a pre-built release. If you don't plan on developing Kubernetes itself, we suggest a pre-built release.
You can either build a release from sources or download a pre-built release. If you do not plan on developing Kubernetes itself, we suggest a pre-built release.
Note: this example includes curl statements to exercise the app.
Note: this example includes curl statements to exercise the app, which automatically generates "petstore" transactions written to redis, and allows you to visualize the throughput in your browswer.
@@ -69,7 +69,7 @@ cluster/kubectl.sh get replicationcontrollers
Note the difference between a [container](http://docs.k8s.io/containers.md)
and a [pod](http://docs.k8s.io/pods.md). Since you only asked for the former, kubernetes will create a wrapper pod for you.
However you can't view the nginx start page on localhost. To verify that nginx is running you need to run `curl` within the docker container (try `docker exec`).
However you cannot view the nginx start page on localhost. To verify that nginx is running you need to run `curl` within the docker container (try `docker exec`).
You can control the specifications of a pod via a user defined manifest, and reach nginx through your browser on the port specified therein:
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@@ -81,11 +81,12 @@ Congratulations!
### Troubleshooting
#### I can't reach service IPs on the network.
#### I cannot reach service IPs on the network.
Some firewall software that uses iptables may not interact well with
kubernetes. If you're having trouble around networking, try disabling any
firewall or other iptables-using systems, first.
kubernetes. If you have trouble around networking, try disabling any
firewall or other iptables-using systems, first. Also, you can check
if SELinux is blocking anything by running a command such as `journalctl --since yesterday | grep avc`.
By default the IP range for service cluster IPs is 10.0.*.* - depending on your
docker installation, this may conflict with IPs for containers. If you find
@@ -33,7 +33,7 @@ The current cluster design is inspired by:
There is a specific `cluster/rackspace` directory with the scripts for the following steps:
1. A cloud network will be created and all instances will be attached to this network.
- flanneld uses this network for next hop routing. These routes allow the containers running on each node to communicate with one another on this private network.
2. A SSH key will be created and uploaded if needed. This key must be used to ssh into the machines since we won't capture the password.
2. A SSH key will be created and uploaded if needed. This key must be used to ssh into the machines (we do not capture the password).
3. The master server and additional nodes will be created via the `nova` CLI. A `cloud-config.yaml` is generated and provided as user-data with the entire configuration for the systems.
4. We then boot as many nodes as defined via `$NUM_MINIONS`.
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
dbe79bf6e25b nginx:latest "nginx" 21 seconds ago Up 19 seconds k8s--mynginx.8c5b8a3a--7813c8bd_-_3ffe_-_11e4_-_9036_-_0800279696e1.etcd--7813c8bd_-_3ffe_-_11e4_-_9036_-_0800279696e1--fcfa837f
fa0e29c94501 kubernetes/pause:latest "/pause" 8 minutes ago Up 8 minutes 0.0.0.0:8080->80/tcp k8s--net.a90e7ce4--7813c8bd_-_3ffe_-_11e4_-_9036_-_0800279696e1.etcd--7813c8bd_-_3ffe_-_11e4_-_9036_-_0800279696e1--baf5b21b
aa2ee3ed844a google/cadvisor:latest "/usr/bin/cadvisor - 38 minutes ago Up 38 minutes k8s--cadvisor.9e90d182--cadvisor_-_agent.file--4626b3a2
aa2ee3ed844a google/cadvisor:latest "/usr/bin/cadvisor" 38 minutes ago Up 38 minutes k8s--cadvisor.9e90d182--cadvisor_-_agent.file--4626b3a2
65a3a926f357 kubernetes/pause:latest "/pause" 39 minutes ago Up 39 minutes 0.0.0.0:4194->8080/tcp k8s--net.c5ba7f0e--cadvisor_-_agent.file--342fd561
```
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@@ -270,7 +270,7 @@ If this is your first time creating the cluster, the kubelet on each minion sche
To set up a vagrant cluster for hacking, follow the [vagrant developer guide](../devel/developer-guides/vagrant.md).
#### I have brought Vagrant up but the nodes won't validate!
#### I have brought Vagrant up but the nodes cannot validate!
Log on to one of the nodes (`vagrant ssh minion-1`) and inspect the salt minion log (`sudo cat /var/log/salt/minion`).
