Move topic to Tasks. (#3627)

2017-05-03 17:44:23 -07:00
parent ede2648b28
commit 1663f37f90
6 changed files with 53 additions and 1 deletions
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---
-title: Running a Stateless Application Using a Deployment
-redirect_from:
- "/docs/user-guide/simple-nginx/"
- "/docs/user-guide/simple-nginx.html"
- "/docs/user-guide/pods/single-container/"
- "/docs/user-guide/pods/single-container.html"
- "/docs/user-guide/deploying-applications/"
- "/docs/user-guide/deploying-applications.html"
---
-
-{% capture overview %}
-
-This page shows how to run an application using a Kubernetes Deployment object.
-
-{% endcapture %}
-
-
-{% capture objectives %}
-
-* Create an nginx deployment.
-* Use kubectl to list information about the deployment.
-* Update the deployment.
-
-{% endcapture %}
-
-
-{% capture prerequisites %}
-
-{% include task-tutorial-prereqs.md %}
-
-{% endcapture %}
-
-
-{% capture lessoncontent %}
-
-## Creating and exploring an nginx deployment
-
-You can run an application by creating a Kubernetes Deployment object, and you
-can describe a Deployment in a YAML file. For example, this YAML file describes
-a Deployment that runs the nginx:1.7.9 Docker image:
-
-{% include code.html language="yaml" file="deployment.yaml" ghlink="/docs/tutorials/stateless-application/deployment.yaml" %}
-
-
-1. Create a Deployment based on the YAML file:
-
-        kubectl create -f http://k8s.io/docs/tutorials/stateless-application/deployment.yaml
-
-1. Display information about the Deployment:
-
-        kubectl describe deployment nginx-deployment
-
-        user@computer:~/kubernetes.github.io$ kubectl describe deployment nginx-deployment
-        Name:     nginx-deployment
-        Namespace:    default
-        CreationTimestamp:  Tue, 30 Aug 2016 18:11:37 -0700
-        Labels:     app=nginx
-        Selector:   app=nginx
-        Replicas:   2 updated | 2 total | 2 available | 0 unavailable
-        StrategyType:   RollingUpdate
-        MinReadySeconds:  0
-        RollingUpdateStrategy:  1 max unavailable, 1 max surge
-        Conditions:
-          Type          Status  Reason
-          ----          ------  ------
-          Available     True    MinimumReplicasAvailable
-        OldReplicaSets:   <none>
-        NewReplicaSet:    nginx-deployment-1771418926 (2/2 replicas created)
-        No events.
-
-1. List the pods created by the deployment:
-
-        kubectl get pods -l app=nginx
-
-        NAME                                READY     STATUS    RESTARTS   AGE
-        nginx-deployment-1771418926-7o5ns   1/1       Running   0          16h
-        nginx-deployment-1771418926-r18az   1/1       Running   0          16h
-
-1. Display information about a pod:
-
-        kubectl describe pod <pod-name>
-
-    where `<pod-name>` is the name of one of your pods.
-
-## Updating the deployment
-
-You can update the deployment by applying a new YAML file. This YAML file
-specifies that the deployment should be updated to use nginx 1.8.
-
-{% include code.html language="yaml" file="deployment-update.yaml" ghlink="/docs/tutorials/stateless-application/deployment-update.yaml" %}
-
-1. Apply the new YAML file:
-
-        kubectl apply -f http://k8s.io/docs/tutorials/stateless-application/deployment-update.yaml
-
-1. Watch the deployment create pods with new names and delete the old pods:
-
-        kubectl get pods -l app=nginx
-
-## Scaling the application by increasing the replica count
-
-You can increase the number of pods in your Deployment by applying a new YAML
-file. This YAML file sets `replicas` to 4, which specifies that the Deployment
-should have four pods:
-
-{% include code.html language="yaml" file="deployment-scale.yaml" ghlink="/docs/tutorials/stateless-application/deployment-scale.yaml" %}
-
-1. Apply the new YAML file:
-
-        kubectl apply -f http://k8s.io/docs/tutorials/stateless-application/deployment-scale.yaml
-
-1. Verify that the Deployment has four pods:
-
-        kubectl get pods -l app=nginx
-
-    The output is similar to this:
-
-        NAME                               READY     STATUS    RESTARTS   AGE
-        nginx-deployment-148880595-4zdqq   1/1       Running   0          25s
-        nginx-deployment-148880595-6zgi1   1/1       Running   0          25s
-        nginx-deployment-148880595-fxcez   1/1       Running   0          2m
-        nginx-deployment-148880595-rwovn   1/1       Running   0          2m
-
-## Deleting a deployment
-
-Delete the deployment by name:
-
-    kubectl delete deployment nginx-deployment
-
-{% endcapture %}
-
-
-{% capture whatsnext %}
-
-* Learn more about [Deployment objects](/docs/concepts/workloads/controllers/deployment/).
-
-* Learn more about [Deploying applications](/docs/user-guide/deploying-applications/)
-
-{% endcapture %}
-
-{% include templates/tutorial.md %}