add code formatting to commands in expose-external-ip-address tutorial
RA489
parent
dcd16d57fa
commit
2abce40d08
|
|
@ -9,12 +9,8 @@ weight: 10
|
|||
This page shows how to create a Kubernetes Service object that exposes an
|
||||
external IP address.
|
||||
|
||||
|
||||
|
||||
|
||||
## {{% heading "prerequisites" %}}
|
||||
|
||||
|
||||
* Install [kubectl](/docs/tasks/tools/install-kubectl/).
|
||||
|
||||
* Use a cloud provider like Google Kubernetes Engine or Amazon Web Services to
|
||||
|
|
@ -25,19 +21,12 @@ external IP address.
|
|||
* Configure `kubectl` to communicate with your Kubernetes API server. For
|
||||
instructions, see the documentation for your cloud provider.
|
||||
|
||||
|
||||
|
||||
|
||||
## {{% heading "objectives" %}}
|
||||
|
||||
|
||||
* Run five instances of a Hello World application.
|
||||
* Create a Service object that exposes an external IP address.
|
||||
* Use the Service object to access the running application.
|
||||
|
||||
|
||||
|
||||
|
||||
<!-- lessoncontent -->
|
||||
|
||||
## Creating a service for an application running in five pods
|
||||
|
|
@ -50,37 +39,46 @@ external IP address.
|
|||
kubectl apply -f https://k8s.io/examples/service/load-balancer-example.yaml
|
||||
```
|
||||
|
||||
|
||||
The preceding command creates a
|
||||
{{< glossary_tooltip text="Deployment" term_id="deployment" >}}
|
||||
and an associated
|
||||
{{< glossary_tooltip term_id="replica-set" text="ReplicaSet" >}}.
|
||||
The ReplicaSet has five
|
||||
{{< glossary_tooltip text="Pods" term_id="pod" >}}
|
||||
each of which runs the Hello World application.
|
||||
{{< glossary_tooltip text="Deployment" term_id="deployment" >}}
|
||||
and an associated
|
||||
{{< glossary_tooltip term_id="replica-set" text="ReplicaSet" >}}.
|
||||
The ReplicaSet has five
|
||||
{{< glossary_tooltip text="Pods" term_id="pod" >}}
|
||||
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=LoadBalancer --name=my-service
|
||||
```shell
|
||||
kubectl expose deployment hello-world --type=LoadBalancer --name=my-service
|
||||
```
|
||||
|
||||
1. Display information about the Service:
|
||||
|
||||
kubectl get services my-service
|
||||
```shell
|
||||
kubectl get services my-service
|
||||
```
|
||||
|
||||
The output is similar to this:
|
||||
|
||||
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
|
||||
my-service LoadBalancer 10.3.245.137 104.198.205.71 8080/TCP 54s
|
||||
```
|
||||
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
|
||||
my-service LoadBalancer 10.3.245.137 104.198.205.71 8080/TCP 54s
|
||||
```
|
||||
|
||||
{{< note >}}
|
||||
|
||||
|
|
@ -96,23 +94,27 @@ The preceding command creates a
|
|||
|
||||
1. Display detailed information about the Service:
|
||||
|
||||
kubectl describe services my-service
|
||||
```shell
|
||||
kubectl describe services my-service
|
||||
```
|
||||
|
||||
The output is similar to this:
|
||||
|
||||
Name: my-service
|
||||
Namespace: default
|
||||
Labels: app.kubernetes.io/name=load-balancer-example
|
||||
Annotations: <none>
|
||||
Selector: app.kubernetes.io/name=load-balancer-example
|
||||
Type: LoadBalancer
|
||||
IP: 10.3.245.137
|
||||
LoadBalancer Ingress: 104.198.205.71
|
||||
Port: <unset> 8080/TCP
|
||||
NodePort: <unset> 32377/TCP
|
||||
Endpoints: 10.0.0.6:8080,10.0.1.6:8080,10.0.1.7:8080 + 2 more...
|
||||
Session Affinity: None
|
||||
Events: <none>
|
||||
```
|
||||
Name: my-service
|
||||
Namespace: default
|
||||
Labels: app.kubernetes.io/name=load-balancer-example
|
||||
Annotations: <none>
|
||||
Selector: app.kubernetes.io/name=load-balancer-example
|
||||
Type: LoadBalancer
|
||||
IP: 10.3.245.137
|
||||
LoadBalancer Ingress: 104.198.205.71
|
||||
Port: <unset> 8080/TCP
|
||||
NodePort: <unset> 32377/TCP
|
||||
Endpoints: 10.0.0.6:8080,10.0.1.6:8080,10.0.1.7:8080 + 2 more...
|
||||
Session Affinity: None
|
||||
Events: <none>
|
||||
```
|
||||
|
||||
Make a note of the external IP address (`LoadBalancer Ingress`) exposed by
|
||||
your service. In this example, the external IP address is 104.198.205.71.
|
||||
|
|
@ -124,21 +126,27 @@ The preceding command creates a
|
|||
addresses of the pods that are running the Hello World application. To
|
||||
verify these are pod addresses, enter this command:
|
||||
|
||||
kubectl get pods --output=wide
|
||||
```shell
|
||||
kubectl get pods --output=wide
|
||||
```
|
||||
|
||||
The output is similar to this:
|
||||
|
||||
NAME ... IP NODE
|
||||
hello-world-2895499144-1jaz9 ... 10.0.1.6 gke-cluster-1-default-pool-e0b8d269-1afc
|
||||
hello-world-2895499144-2e5uh ... 10.0.1.8 gke-cluster-1-default-pool-e0b8d269-1afc
|
||||
hello-world-2895499144-9m4h1 ... 10.0.0.6 gke-cluster-1-default-pool-e0b8d269-5v7a
|
||||
hello-world-2895499144-o4z13 ... 10.0.1.7 gke-cluster-1-default-pool-e0b8d269-1afc
|
||||
hello-world-2895499144-segjf ... 10.0.2.5 gke-cluster-1-default-pool-e0b8d269-cpuc
|
||||
```
|
||||
NAME ... IP NODE
|
||||
hello-world-2895499144-1jaz9 ... 10.0.1.6 gke-cluster-1-default-pool-e0b8d269-1afc
|
||||
hello-world-2895499144-2e5uh ... 10.0.1.8 gke-cluster-1-default-pool-e0b8d269-1afc
|
||||
hello-world-2895499144-9m4h1 ... 10.0.0.6 gke-cluster-1-default-pool-e0b8d269-5v7a
|
||||
hello-world-2895499144-o4z13 ... 10.0.1.7 gke-cluster-1-default-pool-e0b8d269-1afc
|
||||
hello-world-2895499144-segjf ... 10.0.2.5 gke-cluster-1-default-pool-e0b8d269-cpuc
|
||||
```
|
||||
|
||||
1. Use the external IP address (`LoadBalancer Ingress`) to access the Hello
|
||||
World application:
|
||||
|
||||
curl http://<external-ip>:<port>
|
||||
```shell
|
||||
curl http://<external-ip>:<port>
|
||||
```
|
||||
|
||||
where `<external-ip>` is the external IP address (`LoadBalancer Ingress`)
|
||||
of your Service, and `<port>` is the value of `Port` in your Service
|
||||
|
|
@ -148,29 +156,27 @@ The preceding command creates a
|
|||
|
||||
The response to a successful request is a hello message:
|
||||
|
||||
Hello Kubernetes!
|
||||
|
||||
|
||||
|
||||
```shell
|
||||
Hello Kubernetes!
|
||||
```
|
||||
|
||||
## {{% heading "cleanup" %}}
|
||||
|
||||
|
||||
To delete the Service, enter this command:
|
||||
|
||||
kubectl delete services my-service
|
||||
```shell
|
||||
kubectl delete services my-service
|
||||
```
|
||||
|
||||
To delete the Deployment, the ReplicaSet, and the Pods that are running
|
||||
the Hello World application, enter this command:
|
||||
|
||||
kubectl delete deployment hello-world
|
||||
|
||||
|
||||
|
||||
```shell
|
||||
kubectl delete deployment hello-world
|
||||
```
|
||||
|
||||
## {{% heading "whatsnext" %}}
|
||||
|
||||
|
||||
Learn more about
|
||||
[connecting applications with services](/docs/concepts/services-networking/connect-applications-service/).
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue