From 83d9cef8a932038ba661a4f70907a421feae0655 Mon Sep 17 00:00:00 2001 From: Melissa Anderson Date: Fri, 25 May 2018 14:04:32 -0700 Subject: [PATCH] Update service-access-application-cluster.md (#8699) * Update service-access-application-cluster.md Fix code snippet formatting and indentation in ordered list (#8698) * Fixes code formatting using code fences Here's a pass with code fences. It seems to work well, and I indented the code fences in the source for readability, even though it wasn't needed for proper indentation in the rendered output. I wasn't able to use code fences and get the text "The response to a successful request is a hello message:" on its own line. I can achieve that using indentation, but for consistency's sake I used the code fences and placed the text with the paragraph above it. * Adds `shell` to the code fences --- .../service-access-application-cluster.md | 115 +++++++++--------- 1 file changed, 58 insertions(+), 57 deletions(-) diff --git a/content/en/docs/tasks/access-application-cluster/service-access-application-cluster.md b/content/en/docs/tasks/access-application-cluster/service-access-application-cluster.md index 8ed6b00027..9c67c4f628 100644 --- a/content/en/docs/tasks/access-application-cluster/service-access-application-cluster.md +++ b/content/en/docs/tasks/access-application-cluster/service-access-application-cluster.md @@ -34,9 +34,9 @@ provides load balancing for an application that has two running instances. ## Creating a service for an application running in two pods 1. Run a Hello World application in your cluster: - - kubectl run hello-world --replicas=2 --labels="run=load-balancer-example" --image=gcr.io/google-samples/node-hello:1.0 --port=8080 - + ```shell + kubectl run hello-world --replicas=2 --labels="run=load-balancer-example" --image=gcr.io/google-samples/node-hello:1.0 --port=8080 + ``` The preceding command creates a [Deployment](/docs/concepts/workloads/controllers/deployment/) object and an associated @@ -46,77 +46,81 @@ provides load balancing for an application that has two running instances. each of which runs the Hello World application. 1. Display information about the Deployment: - - kubectl get deployments hello-world - kubectl describe deployments hello-world + ```shell + kubectl get deployments hello-world + kubectl describe deployments hello-world + ``` 1. Display information about your ReplicaSet objects: - - kubectl get replicasets - kubectl describe replicasets + ```shell + kubectl get replicasets + kubectl describe replicasets + ``` 1. Create a Service object that exposes the deployment: - - kubectl expose deployment hello-world --type=NodePort --name=example-service + ```shell + kubectl expose deployment hello-world --type=NodePort --name=example-service + ``` 1. Display information about the Service: - - kubectl describe services example-service - - The output is similar to this: - - Name: example-service - Namespace: default - Labels: run=load-balancer-example - Annotations: - Selector: run=load-balancer-example - Type: NodePort - IP: 10.32.0.16 - Port: 8080/TCP - TargetPort: 8080/TCP - NodePort: 31496/TCP - Endpoints: 10.200.1.4:8080,10.200.2.5:8080 - Session Affinity: None - Events: - - Make a note of the NodePort value for the service. For example, - in the preceding output, the NodePort value is 31496. + ```shell + kubectl describe services example-service + ``` + The output is similar to this: + ```shell + Name: example-service + Namespace: default + Labels: run=load-balancer-example + Annotations: + Selector: run=load-balancer-example + Type: NodePort + IP: 10.32.0.16 + Port: 8080/TCP + TargetPort: 8080/TCP + NodePort: 31496/TCP + Endpoints: 10.200.1.4:8080,10.200.2.5:8080 + Session Affinity: None + Events: + ``` + Make a note of the NodePort value for the service. For example, + in the preceding output, the NodePort value is 31496. 1. List the pods that are running the Hello World application: - - kubectl get pods --selector="run=load-balancer-example" --output=wide - - The output is similar to this: - - NAME READY STATUS ... IP NODE - hello-world-2895499144-bsbk5 1/1 Running ... 10.200.1.4 worker1 - hello-world-2895499144-m1pwt 1/1 Running ... 10.200.2.5 worker2 - + ```shell + kubectl get pods --selector="run=load-balancer-example" --output=wide + ``` + The output is similar to this: + ```shell + NAME READY STATUS ... IP NODE + hello-world-2895499144-bsbk5 1/1 Running ... 10.200.1.4 worker1 + hello-world-2895499144-m1pwt 1/1 Running ... 10.200.2.5 worker2 + ``` 1. Get the public IP address of one of your nodes that is running a Hello World pod. How you get this address depends on how you set up your cluster. For example, if you are using Minikube, you can see the node address by running `kubectl cluster-info`. If you are using Google Compute Engine instances, you can use the `gcloud compute instances list` command to see the public addresses of your - nodes. For more information about this command, see the [GCE documentation](https://cloud.google.com/sdk/gcloud/reference/compute/instances/list). + nodes. For more information about this command, see the [GCE documentation](https://cloud.google.com/sdk/gcloud/ +reference/compute/instances/list). 1. On your chosen node, create a firewall rule that allows TCP traffic on your node port. For example, if your Service has a NodePort value of - 31568, create a firewall rule that allows TCP traffic on port 31568. Different - cloud providers offer different ways of configuring firewall rules. See [the - GCE documentation on firewall rules](https://cloud.google.com/compute/docs/vpc/firewalls), + 31568, create a firewall rule that allows TCP traffic on port 31568. Different + cloud providers offer different ways of configuring firewall rules. See [the + GCE documentation on firewall rules](https://cloud.google.com/compute/docs/vpc/firewalls), for example. 1. Use the node address and node port to access the Hello World application: - - curl http://: - - where `` is the public IP address of your node, - and `` is the NodePort value for your service. - - The response to a successful request is a hello message: - - Hello Kubernetes! + ```shell + curl http://: + ``` + where `` is the public IP address of your node, + and `` is the NodePort value for your service. The + response to a successful request is a hello message: + ```shell + Hello Kubernetes! + ``` ## Using a service configuration file @@ -146,6 +150,3 @@ the Hello World application, enter this command: Learn more about [connecting applications with services](/docs/concepts/services-networking/connect-applications-service/). {{% /capture %}} - - -