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2020-08-31 22:55:17 -07:00
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README.md Normal file
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# Fleet Examples
This repository contains examples of how to use Fleet using different approaches.
| Example | Description |
|-------------|-------------|
| [simple](simple/) | The minimally viable repo to deploy raw Kubernetes resources |
| [manifest](manifest/) | A full example of using raw Kubernetes YAML and customizing it per target cluster |
| [helm](helm/) | A full example of using Helm and customizing it per target cluster |
| [kustomize](kustomize/) | A full example of using Kustomize and customizing it per target cluster |

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# Helm Example
This example will deploy the [Kubernetes sample guestbook](https://github.com/kubernetes/examples/tree/master/guestbook/) application as
packaged as a Helm chart.
The app will be deployed into the `fleet-helm-example` namespace.
The application will be customized as follows per environment:
* Dev clusters: Only the redis leader is deployed and not the followers.
* Test clusters: Scale the front deployment to 3
* Prod clusters: Scale the front deployment to 3 and set the service type to LoadBalancer

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apiVersion: v2
name: guestbook
description: Sample application
version: 0.0.0
appVersion: 0.0.0

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apiVersion: apps/v1
kind: Deployment
metadata:
name: frontend
spec:
selector:
matchLabels:
app: guestbook
tier: frontend
replicas: {{ .Values.replicas }}
template:
metadata:
labels:
app: guestbook
tier: frontend
spec:
containers:
- name: php-redis
image: gcr.io/google-samples/gb-frontend:v4
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 80

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helm/chart/templates/frontend-service.yaml Normal file
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apiVersion: v1
kind: Service
metadata:
name: frontend
labels:
app: guestbook
tier: frontend
spec:
type: "{{ .Values.serviceType }}"
ports:
- port: 80
selector:
app: guestbook
tier: frontend

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helm/chart/templates/redis-master-deployment.yaml Normal file
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apiVersion: apps/v1
kind: Deployment
metadata:
name: redis-master
spec:
selector:
matchLabels:
app: redis
role: master
tier: backend
replicas: 1
template:
metadata:
labels:
app: redis
role: master
tier: backend
spec:
containers:
- name: master
image: redis
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379

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apiVersion: v1
kind: Service
metadata:
name: redis-master
labels:
app: redis
role: master
tier: backend
spec:
ports:
- port: 6379
targetPort: 6379
selector:
app: redis
role: master
tier: backend

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helm/chart/templates/redis-slave-deployment.yaml Normal file
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{{ if .Values.replication }}
apiVersion: apps/v1
kind: Deployment
metadata:
name: redis-slave
spec:
selector:
matchLabels:
app: redis
role: slave
tier: backend
replicas: 2
template:
metadata:
labels:
app: redis
role: slave
tier: backend
spec:
containers:
- name: slave
image: gcr.io/google_samples/gb-redisslave:v1
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379
{{ end }}

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apiVersion: v1
kind: Service
metadata:
name: redis-slave
labels:
app: redis
role: slave
tier: backend
spec:
ports:
- port: 6379
selector:
app: redis
{{ if .Values.replication }}
role: slave
{{ else }}
role: master
{{ end }}
tier: backend

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replication: true
replicas: 1
serviceType: NodePort

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helm/fleet.yaml Normal file
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namespace: fleet-helm-example
targets:
- name: dev
values:
replication: false
clusterSelector:
matchLabels:
env: dev
- name: test
values:
replicas: 3
clusterSelector:
matchLabels:
env: test
- name: prod
values:
serviceType: LoadBalancer
replicas: 3
clusterSelector:
matchLabels:
env: prod

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kustomize/README.md Normal file
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# Helm Example
This example will deploy the [Kubernetes sample guestbook](https://github.com/kubernetes/examples/tree/master/guestbook/) application
using kustomize. The app will be deployed into the `fleet-kustomize-example` namespace.
The application will be customized as follows per environment:
* Dev clusters: Only the redis leader is deployed and not the followers.
* Test clusters: Scale the front deployment to 3
* Prod clusters: Scale the front deployment to 3 and set the service type to LoadBalancer

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namespace: fleet-kustomize-example
targets:
- name: dev
clusterSelector:
matchLabels:
env: dev
# NOTE: This directory is always relative to ./kustomize
kustomizeDir: overlays/dev
- name: test
clusterSelector:
matchLabels:
env: test
# NOTE: This directory is always relative to ./kustomize
kustomizeDir: overlays/test
- name: prod
clusterSelector:
matchLabels:
env: prod
# NOTE: This directory is always relative to ./kustomize
kustomizeDir: overlays/prod

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kustomize/kustomize/base/frontend-deployment.yaml Normal file
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apiVersion: apps/v1
kind: Deployment
metadata:
name: frontend
spec:
selector:
matchLabels:
app: guestbook
tier: frontend
replicas: 1
template:
metadata:
labels:
app: guestbook
tier: frontend
spec:
containers:
- name: php-redis
image: gcr.io/google-samples/gb-frontend:v4
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 80

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kustomize/kustomize/base/frontend-service.yaml Normal file
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apiVersion: v1
kind: Service
metadata:
name: frontend
labels:
app: guestbook
tier: frontend
spec:
type: NodePort
ports:
- port: 80
selector:
app: guestbook
tier: frontend

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kustomize/kustomize/base/kustomization.yaml Normal file
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resources:
- frontend-deployment.yaml
- frontend-service.yaml
- redis-master-deployment.yaml
- redis-master-service.yaml
- redis-slave-deployment.yaml
- redis-slave-service.yaml

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kustomize/kustomize/base/redis-master-deployment.yaml Normal file
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apiVersion: apps/v1
kind: Deployment
metadata:
name: redis-master
spec:
selector:
matchLabels:
app: redis
role: master
tier: backend
replicas: 1
template:
metadata:
labels:
app: redis
role: master
tier: backend
spec:
containers:
- name: master
image: redis
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379

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kustomize/kustomize/base/redis-master-service.yaml Normal file
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apiVersion: v1
kind: Service
metadata:
name: redis-master
labels:
app: redis
role: master
tier: backend
spec:
ports:
- port: 6379
targetPort: 6379
selector:
app: redis
role: master
tier: backend

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kustomize/kustomize/base/redis-slave-deployment.yaml Normal file
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apiVersion: apps/v1
kind: Deployment
metadata:
name: redis-slave
spec:
selector:
matchLabels:
app: redis
role: slave
tier: backend
replicas: 2
template:
metadata:
labels:
app: redis
role: slave
tier: backend
spec:
containers:
- name: slave
image: gcr.io/google_samples/gb-redisslave:v1
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379

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kustomize/kustomize/base/redis-slave-service.yaml Normal file
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apiVersion: v1
kind: Service
metadata:
name: redis-slave
labels:
app: redis
role: slave
tier: backend
spec:
ports:
- port: 6379
selector:
app: redis
role: slave
tier: backend

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resources:
- overlays/dev

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resources:
- ../../base
patches:
- redis-slave-deployment.yaml
- redis-slave-service.yaml

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kustomize/kustomize/overlays/dev/redis-slave-deployment.yaml Normal file
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kind: Deployment
apiVersion: apps/v1
metadata:
name: redis-slave
spec:
replicas: 0

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kind: Service
apiVersion: v1
metadata:
name: redis-slave
spec:
selector:
role: master

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apiVersion: apps/v1
kind: Deployment
metadata:
name: frontend
spec:
replicas: 3

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kustomize/kustomize/overlays/prod/frontend-service.yaml Normal file
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kind: Service
apiVersion: v1
metadata:
name: frontend
spec:
type: LoadBalancer

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kustomize/kustomize/overlays/prod/kustomization.yaml Normal file
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resources:
- ../../base
patches:
- frontend-deployment.yaml
- frontend-service.yaml

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kustomize/kustomize/overlays/test/frontend-deployment.yaml Normal file
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apiVersion: apps/v1
kind: Deployment
metadata:
name: frontend
spec:
replicas: 3

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resources:
- ../../base
patches:
- frontend-deployment.yaml

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manifests/README.md Normal file
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# Manifests Example
This example will deploy the [Kubernetes sample guestbook](https://github.com/kubernetes/examples/tree/master/guestbook/) application.
The app will be deployed into the `fleet-manifest-example` namespace.
The application will be customized as follows per environment:
* Dev clusters: Only the redis leader is deployed and not the followers.
* Test clusters: Scale the front deployment to 3
* Prod clusters: Scale the front deployment to 3 and set the service type to LoadBalancer

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namespace: fleet-manifest-example
targets:
- name: dev
clusterSelector:
matchLabels:
env: dev
overlays:
- noreplication
- name: test
clusterSelector:
matchLabels:
env: test
overlays:
- scale3
- name: prod
clusterSelector:
matchLabels:
env: prod
overlays:
- servicelb
- scale3

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apiVersion: apps/v1
kind: Deployment
metadata:
name: frontend
spec:
selector:
matchLabels:
app: guestbook
tier: frontend
replicas: 1
template:
metadata:
labels:
app: guestbook
tier: frontend
spec:
containers:
- name: php-redis
image: gcr.io/google-samples/gb-frontend:v4
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 80

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apiVersion: v1
kind: Service
metadata:
name: frontend
labels:
app: guestbook
tier: frontend
spec:
type: NodePort
ports:
- port: 80
selector:
app: guestbook
tier: frontend

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apiVersion: apps/v1
kind: Deployment
metadata:
name: redis-master
spec:
selector:
matchLabels:
app: redis
role: master
tier: backend
replicas: 1
template:
metadata:
labels:
app: redis
role: master
tier: backend
spec:
containers:
- name: master
image: redis
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379

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apiVersion: v1
kind: Service
metadata:
name: redis-master
labels:
app: redis
role: master
tier: backend
spec:
ports:
- port: 6379
targetPort: 6379
selector:
app: redis
role: master
tier: backend

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apiVersion: apps/v1
kind: Deployment
metadata:
name: redis-slave
spec:
selector:
matchLabels:
app: redis
role: slave
tier: backend
replicas: 2
template:
metadata:
labels:
app: redis
role: slave
tier: backend
spec:
containers:
- name: slave
image: gcr.io/google_samples/gb-redisslave:v1
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379

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apiVersion: v1
kind: Service
metadata:
name: redis-slave
labels:
app: redis
role: slave
tier: backend
spec:
ports:
- port: 6379
selector:
app: redis
role: slave
tier: backend

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manifests/overlays/noreplication/manifests/redis-slave-deployment.yaml Normal file
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spec:
selector:
role: master

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spec:
replicas: 3

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manifests/overlays/servicelb/manifests/frontend-service_patch.yaml Normal file
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spec:
type: LoadBalancer

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# Simple Example
This example will deploy the [Kubernetes sample guestbook](https://github.com/kubernetes/examples/tree/master/guestbook/) application.
The app will be deployed into the `default` namespace.

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apiVersion: apps/v1
kind: Deployment
metadata:
name: frontend
spec:
selector:
matchLabels:
app: guestbook
tier: frontend
replicas: 3
template:
metadata:
labels:
app: guestbook
tier: frontend
spec:
containers:
- name: php-redis
image: gcr.io/google-samples/gb-frontend:v4
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 80

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apiVersion: v1
kind: Service
metadata:
name: frontend
labels:
app: guestbook
tier: frontend
spec:
type: NodePort
ports:
- port: 80
selector:
app: guestbook
tier: frontend

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apiVersion: apps/v1
kind: Deployment
metadata:
name: redis-master
spec:
selector:
matchLabels:
app: redis
role: master
tier: backend
replicas: 1
template:
metadata:
labels:
app: redis
role: master
tier: backend
spec:
containers:
- name: master
image: redis
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379

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apiVersion: v1
kind: Service
metadata:
name: redis-master
labels:
app: redis
role: master
tier: backend
spec:
ports:
- port: 6379
targetPort: 6379
selector:
app: redis
role: master
tier: backend

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simple/manifests/redis-slave-deployment.yaml Normal file
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apiVersion: apps/v1
kind: Deployment
metadata:
name: redis-slave
spec:
selector:
matchLabels:
app: redis
role: slave
tier: backend
replicas: 2
template:
metadata:
labels:
app: redis
role: slave
tier: backend
spec:
containers:
- name: slave
image: gcr.io/google_samples/gb-redisslave:v1
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379

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apiVersion: v1
kind: Service
metadata:
name: redis-slave
labels:
app: redis
role: slave
tier: backend
spec:
ports:
- port: 6379
selector:
app: redis
role: slave
tier: backend