14. 오라클 클라우드-쿠버네티스-카나리 업그레이드
<1> 카나리 업그레이드
<2> 인그레스 생성과 카나리 배포 조정
<1> 카나리 업그레이드
1
파드 생성
topasvga@cloudshell:~ (ap-seoul-1)$ cat << EOF > canary-svc1-pod.yaml
> apiVersion: apps/v1
> kind: Deployment
> metadata:
> name: dp-v1
> spec:
> replicas: 3
> selector:
> matchLabels:
> app: svc-v1
> template:
> metadata:
> labels:
> app: svc-v1
> spec:
> containers:
> - name: pod-v1
> image: k8s.gcr.io/echoserver:1.5
> ports:
> - containerPort: 8080
> ---
> apiVersion: v1
> kind: Service
> metadata:
> name: svc-v1
> spec:
> ports:
> - name: web-port
> port: 9001
> targetPort: 8080
> selector:
> app: svc-v1
> EOF
topasvga@cloudshell:~ (ap-seoul-1)$ cat << EOF > canary-svc2-pod.yaml
> apiVersion: apps/v1
> kind: Deployment
> metadata:
> name: dp-v2
> spec:
> replicas: 3
> selector:
> matchLabels:
> app: svc-v2
> template:
> metadata:
> labels:
> app: svc-v2
> spec:
> containers:
> - name: pod-v2
> image: k8s.gcr.io/echoserver:1.6
> ports:
> - containerPort: 8080
> ---
> apiVersion: v1
> kind: Service
> metadata:
> name: svc-v2
> spec:
> ports:
> - name: web-port
> port: 9001
> targetPort: 8080
> selector:
> app: svc-v2
> EOF
2
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl apply -f canary-svc1-pod.yaml
deployment.apps/dp-v1 created
service/svc-v1 created
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl apply -f canary-svc2-pod.yaml
deployment.apps/dp-v2 created
service/svc-v2 created
3
생성 확인
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 88s
svc-v1 ClusterIP 10.96.99.120 <none> 9001/TCP 19s
svc-v2 ClusterIP 10.96.191.129 <none> 9001/TCP 15s
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl get endpoints
NAME ENDPOINTS AGE
oracle.com-oci <none> 15h
svc-v1 10.244.0.173:8080,10.244.0.72:8080,10.244.0.73:8080 23s
svc-v2 10.244.0.174:8080,10.244.0.175:8080,10.244.0.74:8080 18s
4
파드 버전 확인 ?
현재 버전은 1.13.0
topasvga@cloudshell:~ (ap-seoul-1)$ for pod in $(kubectl get pod -o wide -l app=svc-v1 |awk 'NR>1 {print $6}'); do curl -s $pod:8080 | egrep '(Hostname|nginx)'; done
^C
현재 버전은 1.13.1
topasvga@cloudshell:~ (ap-seoul-1)$ for pod in $(kubectl get pod -o wide -l app=svc-v2 |awk 'NR>1 {print $6}'); do curl -s $pod:8080 | egrep '(Hostname|nginx)'; done
^C
5
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl get pod,ingress,ep,svc,deploy
NAME READY STATUS RESTARTS AGE
pod/dp-v1-66cbf74c56-5n2h9 1/1 Running 0 3m49s
pod/dp-v1-66cbf74c56-mkmld 1/1 Running 0 3m49s
pod/dp-v1-66cbf74c56-thxg2 1/1 Running 0 3m49s
pod/dp-v2-94cb4ffc7-2rncn 1/1 Running 0 3m45s
pod/dp-v2-94cb4ffc7-6clrf 1/1 Running 0 3m45s
pod/dp-v2-94cb4ffc7-c5qvf 1/1 Running 0 3m45s
NAME ENDPOINTS AGE
endpoints/oracle.com-oci <none> 15h
endpoints/svc-v1 10.244.0.173:8080,10.244.0.72:8080,10.244.0.73:8080 3m49s
endpoints/svc-v2 10.244.0.174:8080,10.244.0.175:8080,10.244.0.74:8080 3m44s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 4m58s
service/svc-v1 ClusterIP 10.96.99.120 <none> 9001/TCP 3m49s
service/svc-v2 ClusterIP 10.96.191.129 <none> 9001/TCP 3m45s
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/dp-v1 3/3 3 3 3m49s
deployment.apps/dp-v2 3/3 3 3 3m45s
<2> 인그레스 생성과 카나리 배포 조정
1
topasvga@cloudshell:~ (ap-seoul-1)$ cat << EOF > canary-ingress1.yaml
> apiVersion: networking.k8s.io/v1beta1
> kind: Ingress
> metadata:
> name: ingress-canary-v1
> annotations:
> kubernetes.io/ingress.class: "nginx"
> spec:
> rules:
> - host: dkos.com
> http:
> paths:
> - backend:
> serviceName: svc-v1
> servicePort: 8080
> EOF
2
topasvga@cloudshell:~ (ap-seoul-1)$ cat << EOF > canary-ingress2.yaml
> apiVersion: networking.k8s.io/v1beta1
> kind: Ingress
> metadata:
> name: ingress-canary-v2
> annotations:
> kubernetes.io/ingress.class: "nginx"
> nginx.ingress.kubernetes.io/canary: "true"
> nginx.ingress.kubernetes.io/canary-weight: "10"
> spec:
> rules:
> - host: dkos.com
> http:
> paths:
> - backend:
> serviceName: svc-v2
> servicePort: 8080
> EOF
3
topasvga@cloudshell:~ (ap-seoul-1)$ sed -i 's/dkos.com/masterseo.com/g' canary-ingress1.yaml
topasvga@cloudshell:~ (ap-seoul-1)$ sed -i 's/dkos.com/masterseo.com/g' canary-ingress2.yaml
4
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl apply -f canary-ingress1.yaml
error: resource mapping not found for name: "ingress-canary-v1" namespace: "" from "canary-ingress1.yaml": no matches for kind "Ingress" in version "networking.k8s.io/v1beta1"
ensure CRDs are installed first
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl apply -f canary-ingress2.yaml
error: resource mapping not found for name: "ingress-canary-v2" namespace: "" from "canary-ingress2.yaml": no matches for kind "Ingress" in version "networking.k8s.io/v1beta1"
ensure CRDs are installed first
5
카나리 배포 확인
접속 테스트
echo $MYDOMAIN1
echo $IngHttp
curl -s $MYDOMAIN1:$IngHttp
curl -s $MYDOMAIN1:$IngHttp | grep nginx
for i in {1..100}; do curl -s $MYDOMAIN1:$IngHttp | grep nginx ; done | sort | uniq -c | sort -nr
for i in {1..1000}; do curl -s $MYDOMAIN1:$IngHttp | grep nginx ; done | sort | uniq -c | sort -nr
9 대 1
for i in {1..100}; do curl -s $MYDOMAIN1:$IngHttp | grep nginx ; done | sort | uniq -c | sort -nr
92 server_version=nginx: 1.13.0 - lua: 10008
8 server_version=nginx: 1.13.1 - lua: 10008
10
비율 조정
10 % 를 50%로 변경
kubectl get ingress ingress-canary-v2 -o yaml | sed -e "s/weight: \"10\"/weight: \"50\"/" | kubectl apply -f -
접속 테스트
for i in {1..100}; do curl -s $MYDOMAIN1:$IngHttp | grep nginx ; done | sort | uniq -c | sort -nr
for i in {1..1000}; do curl -s $MYDOMAIN1:$IngHttp | grep nginx ; done | sort | uniq -c | sort -nr
58 server_version=nginx: 1.13.1 - lua: 10008
42 server_version=nginx: 1.13.0 - lua: 10008
11
kubectl delete deployments,svc,ingress --all
감사합니다.
