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Convert guestbook-go json to yaml 

The first step in bringing this up to a more up-to-date example.
This commit is contained in:
Justin SB 2023-01-24 13:00:51 -05:00
parent 8c357b6f7d
commit 4d12a8ba1b
13 changed files with 124 additions and 199 deletions
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28
guestbook-go/README.md
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@ -24,12 +24,12 @@ This example assumes that you have a working cluster. See the [Getting Started G
### Step One: Create the Redis master pod<a id="step-one"></a> ### Step One: Create the Redis master pod<a id="step-one"></a>
Use the `examples/guestbook-go/redis-master-controller.json` file to create a [replication controller](https://kubernetes.io/docs/concepts/workloads/controllers/replicationcontroller/) and Redis master [pod](https://kubernetes.io/docs/concepts/workloads/pods/pod-overview/). The pod runs a Redis key-value server in a container. Using a replication controller is the preferred way to launch long-running pods, even for 1 replica, so that the pod benefits from the self-healing mechanism in Kubernetes (keeps the pods alive). Use the `examples/guestbook-go/redis-master-controller.yaml` file to create a [replication controller](https://kubernetes.io/docs/concepts/workloads/controllers/replicationcontroller/) and Redis master [pod](https://kubernetes.io/docs/concepts/workloads/pods/pod-overview/). The pod runs a Redis key-value server in a container. Using a replication controller is the preferred way to launch long-running pods, even for 1 replica, so that the pod benefits from the self-healing mechanism in Kubernetes (keeps the pods alive).
1. Use the [redis-master-controller.json](redis-master-controller.json) file to create the Redis master replication controller in your Kubernetes cluster by running the `kubectl create -f` *`filename`* command: 1. Use the [redis-master-controller.yaml](redis-master-controller.yaml) file to create the Redis master replication controller in your Kubernetes cluster by running the `kubectl create -f` *`filename`* command:
```console ```console
$ kubectl create -f examples/guestbook-go/redis-master-controller.json $ kubectl create -f examples/guestbook-go/redis-master-controller.yaml
``` ```
@ -73,10 +73,10 @@ A Kubernetes [service](https://kubernetes.io/docs/concepts/services-networking/s
Services find the pods to load balance based on pod labels. The pod that you created in Step One has the label `app=redis` and `role=master`. The selector field of the service determines which pods will receive the traffic sent to the service. Services find the pods to load balance based on pod labels. The pod that you created in Step One has the label `app=redis` and `role=master`. The selector field of the service determines which pods will receive the traffic sent to the service.
1. Use the [redis-master-service.json](redis-master-service.json) file to create the service in your Kubernetes cluster by running the `kubectl create -f` *`filename`* command: 1. Use the [redis-master-service.yaml](redis-master-service.yaml) file to create the service in your Kubernetes cluster by running the `kubectl create -f` *`filename`* command:
```console ```console
$ kubectl create -f examples/guestbook-go/redis-master-service.json $ kubectl create -f examples/guestbook-go/redis-master-service.yaml
``` ```
@ -96,10 +96,10 @@ Services find the pods to load balance based on pod labels. The pod that you cre
The Redis master we created earlier is a single pod (REPLICAS = 1), while the Redis read replicas we are creating here are 'replicated' pods. In Kubernetes, a replication controller is responsible for managing the multiple instances of a replicated pod. The Redis master we created earlier is a single pod (REPLICAS = 1), while the Redis read replicas we are creating here are 'replicated' pods. In Kubernetes, a replication controller is responsible for managing the multiple instances of a replicated pod.
1. Use the file [redis-replica-controller.json](redis-replica-controller.json) to create the replication controller by running the `kubectl create -f` *`filename`* command: 1. Use the file [redis-replica-controller.yaml](redis-replica-controller.yaml) to create the replication controller by running the `kubectl create -f` *`filename`* command:
```console ```console
$ kubectl create -f examples/guestbook-go/redis-replica-controller.json $ kubectl create -f examples/guestbook-go/redis-replica-controller.yaml
``` ```
@ -139,10 +139,10 @@ The Redis master we created earlier is a single pod (REPLICAS = 1), while the Re
Just like the master, we want to have a service to proxy connections to the read replicas. In this case, in addition to discovery, the Redis replica service provides transparent load balancing to clients. Just like the master, we want to have a service to proxy connections to the read replicas. In this case, in addition to discovery, the Redis replica service provides transparent load balancing to clients.
1. Use the [redis-replica-service.json](redis-replica-service.json) file to create the Redis replica service by running the `kubectl create -f` *`filename`* command: 1. Use the [redis-replica-service.yaml](redis-replica-service.yaml) file to create the Redis replica service by running the `kubectl create -f` *`filename`* command:
```console ```console
$ kubectl create -f examples/guestbook-go/redis-replica-service.json $ kubectl create -f examples/guestbook-go/redis-replica-service.yaml
``` ```
@ -164,14 +164,14 @@ Tip: It is helpful to set labels on your services themselves--as we've done here
This is a simple Go `net/http` ([negroni](https://github.com/codegangsta/negroni) based) server that is configured to talk to either the replica or master services depending on whether the request is a read or a write. The pods we are creating expose a simple JSON interface and serves a jQuery-Ajax based UI. Like the Redis replica pods, these pods are also managed by a replication controller. This is a simple Go `net/http` ([negroni](https://github.com/codegangsta/negroni) based) server that is configured to talk to either the replica or master services depending on whether the request is a read or a write. The pods we are creating expose a simple JSON interface and serves a jQuery-Ajax based UI. Like the Redis replica pods, these pods are also managed by a replication controller.
1. Use the [guestbook-controller.json](guestbook-controller.json) file to create the guestbook replication controller by running the `kubectl create -f` *`filename`* command: 1. Use the [guestbook-controller.yaml](guestbook-controller.yaml) file to create the guestbook replication controller by running the `kubectl create -f` *`filename`* command:
```console ```console
$ kubectl create -f examples/guestbook-go/guestbook-controller.json $ kubectl create -f examples/guestbook-go/guestbook-controller.yaml
``` ```
Tip: If you want to modify the guestbook code open the `_src` of this example and read the README.md and the Makefile. If you have pushed your custom image be sure to update the `image` accordingly in the guestbook-controller.json. Tip: If you want to modify the guestbook code open the `_src` of this example and read the README.md and the Makefile. If you have pushed your custom image be sure to update the `image` accordingly in the guestbook-controller.yaml.
2. To verify that the guestbook replication controller is running, run the `kubectl get rc` command: 2. To verify that the guestbook replication controller is running, run the `kubectl get rc` command:
@ -204,10 +204,10 @@ This is a simple Go `net/http` ([negroni](https://github.com/codegangsta/negroni
Just like the others, we create a service to group the guestbook pods but this time, to make the guestbook front end externally visible, we specify `"type": "LoadBalancer"`. Just like the others, we create a service to group the guestbook pods but this time, to make the guestbook front end externally visible, we specify `"type": "LoadBalancer"`.
1. Use the [guestbook-service.json](guestbook-service.json) file to create the guestbook service by running the `kubectl create -f` *`filename`* command: 1. Use the [guestbook-service.yaml](guestbook-service.yaml) file to create the guestbook service by running the `kubectl create -f` *`filename`* command:
```console ```console
$ kubectl create -f examples/guestbook-go/guestbook-service.json $ kubectl create -f examples/guestbook-go/guestbook-service.yaml
``` ```

37
guestbook-go/guestbook-controller.json
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@ -1,37 +0,0 @@
{
"kind":"ReplicationController",
"apiVersion":"v1",
"metadata":{
"name":"guestbook",
"labels":{
"app":"guestbook"
}
},
"spec":{
"replicas":3,
"selector":{
"app":"guestbook"
},
"template":{
"metadata":{
"labels":{
"app":"guestbook"
}
},
"spec":{
"containers":[
{
"name":"guestbook",
"image":"k8s.gcr.io/guestbook:v3",
"ports":[
{
"name":"http-server",
"containerPort":3000
}
]
}
]
}
}
}
}

21
guestbook-go/guestbook-controller.yaml Normal file
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@ -0,0 +1,21 @@
kind: ReplicationController
apiVersion: v1
metadata:
name: guestbook
labels:
app: guestbook
spec:
replicas: 3
selector:
app: guestbook
template:
metadata:
labels:
app: guestbook
spec:
containers:
- name: guestbook
image: k8s.gcr.io/guestbook:v3
ports:
- name: http-server
containerPort: 3000

22
guestbook-go/guestbook-service.json
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@ -1,22 +0,0 @@
{
"kind":"Service",
"apiVersion":"v1",
"metadata":{
"name":"guestbook",
"labels":{
"app":"guestbook"
}
},
"spec":{
"ports": [
{
"port":3000,
"targetPort":"http-server"
}
],
"selector":{
"app":"guestbook"
},
"type": "LoadBalancer"
}
}

13
guestbook-go/guestbook-service.yaml Normal file
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@ -0,0 +1,13 @@
kind: Service
apiVersion: v1
metadata:
name: guestbook
labels:
app: guestbook
spec:
ports:
- port: 3000
targetPort: http-server
selector:
app: guestbook
type: LoadBalancer

40
guestbook-go/redis-master-controller.json
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@ -1,40 +0,0 @@
{
"kind":"ReplicationController",
"apiVersion":"v1",
"metadata":{
"name":"redis-master",
"labels":{
"app":"redis",
"role":"master"
}
},
"spec":{
"replicas":1,
"selector":{
"app":"redis",
"role":"master"
},
"template":{
"metadata":{
"labels":{
"app":"redis",
"role":"master"
}
},
"spec":{
"containers":[
{
"name":"redis-master",
"image":"k8s.gcr.io/redis:e2e",
"ports":[
{
"name":"redis-server",
"containerPort":6379
}
]
}
]
}
}
}
}

24
guestbook-go/redis-master-controller.yaml Normal file
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@ -0,0 +1,24 @@
kind: ReplicationController
apiVersion: v1
metadata:
name: redis-master
labels:
app: redis
role: master
spec:
replicas: 1
selector:
app: redis
role: master
template:
metadata:
labels:
app: redis
role: master
spec:
containers:
- name: redis-master
image: k8s.gcr.io/redis:e2e
ports:
- name: redis-server
containerPort: 6379

23
guestbook-go/redis-master-service.json
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@ -1,23 +0,0 @@
{
"kind":"Service",
"apiVersion":"v1",
"metadata":{
"name":"redis-master",
"labels":{
"app":"redis",
"role":"master"
}
},
"spec":{
"ports": [
{
"port":6379,
"targetPort":"redis-server"
}
],
"selector":{
"app":"redis",
"role":"master"
}
}
}

14
guestbook-go/redis-master-service.yaml Normal file
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@ -0,0 +1,14 @@
kind: Service
apiVersion: v1
metadata:
name: redis-master
labels:
app: redis
role: master
spec:
ports:
- port: 6379
targetPort: redis-server
selector:
app: redis
role: master

40
guestbook-go/redis-replica-controller.json
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@ -1,40 +0,0 @@
{
"kind":"ReplicationController",
"apiVersion":"v1",
"metadata":{
"name":"redis-replica",
"labels":{
"app":"redis",
"role":"replica"
}
},
"spec":{
"replicas":2,
"selector":{
"app":"redis",
"role":"replica"
},
"template":{
"metadata":{
"labels":{
"app":"redis",
"role":"replica"
}
},
"spec":{
"containers":[
{
"name":"redis-replica",
"image":"k8s.gcr.io/redis-slave:v2",
"ports":[
{
"name":"redis-server",
"containerPort":6379
}
]
}
]
}
}
}
}

24
guestbook-go/redis-replica-controller.yaml Normal file
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@ -0,0 +1,24 @@
kind: ReplicationController
apiVersion: v1
metadata:
name: redis-replica
labels:
app: redis
role: replica
spec:
replicas: 2
selector:
app: redis
role: replica
template:
metadata:
labels:
app: redis
role: replica
spec:
containers:
- name: redis-replica
image: k8s.gcr.io/redis-slave:v2
ports:
- name: redis-server
containerPort: 6379

23
guestbook-go/redis-replica-service.json
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@ -1,23 +0,0 @@
{
"kind":"Service",
"apiVersion":"v1",
"metadata":{
"name":"redis-replica",
"labels":{
"app":"redis",
"role":"replica"
}
},
"spec":{
"ports": [
{
"port":6379,
"targetPort":"redis-server"
}
],
"selector":{
"app":"redis",
"role":"replica"
}
}
}

14
guestbook-go/redis-replica-service.yaml Normal file
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@ -0,0 +1,14 @@
kind: Service
apiVersion: v1
metadata:
name: redis-replica
labels:
app: redis
role: replica
spec:
ports:
- port: 6379
targetPort: redis-server
selector:
app: redis
role: replica