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olix0r/strest-blue-green.yml

Last active August 29, 2020 19:05
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traffic split rotator
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strest-blue-green.yml
---
kind: Namespace
apiVersion: v1
metadata:
name: strest
labels:
app: strest
# target.strest.svc.cluster.local receives all strest traffic.
---
kind: Service
apiVersion: v1
metadata:
name: target
namespace: strest
labels:
app: strest
strest-role: server
spec:
type: ClusterIP
selector:
app: strest
strest-role: server
ports:
- name: strest-grpc
port: 8888
targetPort: 8888
# blue.strest.svc.cluster.local sends traffic to blue pods
---
kind: Service
apiVersion: v1
metadata:
name: blue
namespace: strest
labels:
app: strest
strest-role: server
strest-color: blue
spec:
type: ClusterIP
selector:
app: strest
strest-role: server
strest-color: blue
ports:
- name: strest-grpc
port: 8888
targetPort: 8888
# green.strest.svc.cluster.local sends traffic to green pods
---
kind: Service
apiVersion: v1
metadata:
name: green
namespace: strest
labels:
app: strest
strest-role: server
strest-color: green
spec:
type: ClusterIP
selector:
app: strest
strest-role: server
strest-color: green
ports:
- name: strest-grpc
port: 8888
targetPort: 8888
---
kind: Deployment
apiVersion: apps/v1
metadata:
name: strest-server-blue
namespace: strest
labels:
app: strest
strest-role: server
strest-color: blue
spec:
replicas: 1
selector:
matchLabels:
app: strest
strest-role: server
strest-color: blue
template:
metadata:
labels:
app: strest
strest-role: server
strest-color: blue
spec:
containers:
- name: main
image: buoyantio/strest-grpc:0.0.6
imagePullPolicy: IfNotPresent
ports:
- name: strest-grpc
containerPort: 8888
- name: admin-http
containerPort: 9999
args: ["server", "--address=:8888", "--metricAddr=:9999"]
---
kind: Deployment
apiVersion: apps/v1
metadata:
name: strest-server-green
namespace: strest
labels:
app: strest
strest-role: server
strest-color: green
spec:
replicas: 1
selector:
matchLabels:
app: strest
strest-role: server
strest-color: green
template:
metadata:
labels:
app: strest
strest-role: server
strest-color: green
spec:
containers:
- name: main
image: buoyantio/strest-grpc:0.0.6
imagePullPolicy: IfNotPresent
ports:
- name: strest-grpc
containerPort: 8888
- name: admin-http
containerPort: 9999
args: ["server", "--address=:8888", "--metricAddr=:9999"]
---
kind: Deployment
apiVersion: apps/v1
metadata:
name: strest-client
namespace: strest
labels:
app: strest
strest-role: client
spec:
replicas: 1
selector:
matchLabels:
app: strest
strest-role: client
template:
metadata:
labels:
app: strest
strest-role: client
spec:
containers:
- name: main
image: buoyantio/strest-grpc:0.0.6
imagePullPolicy: IfNotPresent
ports:
- name: admin-http
containerPort: 9999
args:
[
"client",
"--address",
"target:8888",
"--metricAddr",
":9999",
"--streams",
"1",
]
---
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: split-updater
name: split-updater
namespace: strest
spec:
replicas: 1
selector:
matchLabels:
app: split-updater
template:
metadata:
labels:
app: split-updater
annotations:
linkerd.io/inject: disabled
spec:
serviceAccount: split-updater
volumes:
- name: ts
configMap:
name: trafficsplits
containers:
- image: lachlanevenson/k8s-kubectl:v1.18.0
name: split-updater
env:
- name: NS
valueFrom:
fieldRef:
fieldPath: metadata.namespace
volumeMounts:
- name: ts
mountPath: /ts
command:
- /bin/sh
args:
- -c
- |-
set -x
echo "namespace=$NS"
while true; do
sleep 10
kubectl -n "$NS" apply -f /ts/blue-green.yml
sleep 120
kubectl -n "$NS" apply -f /ts/green-blue.yml
sleep 120
kubectl -n "$NS" delete -f /ts/green-blue.yml
sleep 110
done
---
apiVersion: v1
kind: ConfigMap
metadata:
namespace: strest
name: trafficsplits
data:
blue-green.yml: |-
apiVersion: split.smi-spec.io/v1alpha1
kind: TrafficSplit
metadata:
namespace: strest
name: blue-green
spec:
service: target
backends:
- service: blue
weight: 90m
- service: green
weight: 10m
green-blue.yml: |-
apiVersion: split.smi-spec.io/v1alpha1
kind: TrafficSplit
metadata:
namespace: strest
name: blue-green
spec:
service: target
backends:
- service: blue
weight: 10m
- service: green
weight: 90m
---
kind: ServiceAccount
apiVersion: v1
metadata:
name: split-updater
namespace: strest
labels:
app: split-updater
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: strest:split-updater
namespace: strest
labels:
app: split-updater
rules:
- apiGroups: ["split.smi-spec.io"]
resources: ["trafficsplits"]
verbs: ["create", "delete", "get", "update", "patch"]
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: strest:split-updater
namespace: strest
labels:
app: split-updater
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: strest:split-updater
subjects:
- kind: ServiceAccount
name: split-updater
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