This tutorial demonstrates how to create a Pod and manually schedule it to a node using cURL. This guide assumes you don't have a scheduler running in your Kubernetes cluster.
The following pod will run version 1.10.0 of nginx with a 100m CPU limit.
Create the nginx pod manifest and name it pod.json:
| { | |
| "apiVersion":"v1", | |
| "kind":"Binding", | |
| "metadata": { | |
| "name":"nginx" | |
| }, | |
| "target": { | |
| "apiVersion":"v1", | |
| "kind":"Node", | |
| "name":"node1" |
| $ curl -H "Content-Type: application/merge-patch+json" -X PATCH http://127.0.0.1:8080/api/v1/namespaces/default/pods/nginx -d @pod-patch.json | |
| { | |
| "kind": "Status", | |
| "apiVersion": "v1", | |
| "metadata": {}, | |
| "status": "Failure", | |
| "message": "Pod \"nginx\" is invalid: spec: Forbidden: pod updates may not change fields other than `containers[*].image` or `spec.activeDeadlineSeconds`", | |
| "reason": "Invalid", | |
| "details": { | |
| "name": "nginx", |
| ackage main | |
| import ( | |
| "log" | |
| "net" | |
| pb "github.com/kelseyhightower/helloworld/helloworld" | |
| "golang.org/x/net/context" | |
| "google.golang.org/grpc" | |
| ) |
| [Unit] | |
| Description=Kubernetes Kubelet | |
| Documentation=https://github.com/GoogleCloudPlatform/kubernetes | |
| [Service] | |
| ExecStart=/usr/bin/kubelet \ | |
| --hostname-override=<node-ip> \ | |
| --api-servers=http://<api-server-ip>:8080 \ | |
| --v=2 | |
| Restart=on-failure |
| [Unit] | |
| Description=Kubernetes Kubelet | |
| Documentation=https://github.com/GoogleCloudPlatform/kubernetes | |
| [Service] | |
| ExecStart=/usr/bin/kubelet \ | |
| --api-servers=http://<api-server-ip>:8080 \ | |
| --v=2 | |
| Restart=on-failure | |
| RestartSec=5 |
| [Unit] | |
| Description=Docker Application Container Engine | |
| Documentation=http://docs.docker.io | |
| [Service] | |
| ExecStart=/usr/bin/docker \ | |
| daemon \ | |
| --bip=10.200.0.1/24 \ | |
| --iptables=false \ | |
| --ip-masq=false \ |
| [Unit] | |
| Description=Kubernetes Proxy | |
| Documentation=https://github.com/GoogleCloudPlatform/kubernetes | |
| [Service] | |
| ExecStart=/usr/bin/kube-proxy \ | |
| --master=http://127.0.0.1:8080 \ | |
| --v=2 | |
| Restart=on-failure | |
| RestartSec=5 |
| [Unit] | |
| Description=Kubernetes Scheduler | |
| Documentation=https://github.com/GoogleCloudPlatform/kubernetes | |
| [Service] | |
| ExecStart=/usr/bin/kube-scheduler \ | |
| --master=http://127.0.0.1:8080 \ | |
| --v=2 | |
| Restart=on-failure | |
| RestartSec=5 |
| [Unit] | |
| Description=Kubernetes Controller Manager | |
| Documentation=https://github.com/GoogleCloudPlatform/kubernetes | |
| [Service] | |
| ExecStart=/usr/bin/kube-controller-manager \ | |
| --master=http://127.0.0.1:8080 \ | |
| --v=2 | |
| Restart=on-failure | |
| RestartSec=5 |