6. nhn클라우드- nks-은행 계좌 조회
재테스트 필요
은행 계좌 조회
<1> ns 생성
<2> 구성
<3> 정리
<1> ns 생성
watch -d 'kubectl get all '
or
watch -d 'kubectl get ns,deploy,svc,pods -o wide'
kubectl create namespace yaobank
(⎈|default:default) [root@2048game-nhn-web01 ~]# k ns yaobank
<2> 구성
1
은행 시스템에 자신의 계좌에 잔고 조회를 할 수 있는 시스템 - Flask 로 웹 애플리케이션 구성, etcd 로 데이터베이스 구성
https://github.com/tigera/ccol1/blob/main/yaobank.yaml
2
# 생성
curl -s -O https://raw.githubusercontent.com/tigera/ccol1/main/yaobank.yaml
sed -i 's/nodeSelector/#nodeSelector/g' yaobank.yaml && sed -i 's/kubernetes.io/#kubernetes.io/g' yaobank.yaml
sed -i 's/istio-injection: disabled/istio-injection: enabled/g' yaobank.yaml
# (옵션) istio 사용 시 Auto Injection with namespace label
3
vi yaobank.yaml
Node -> LoadBalancer
kubectl apply -f yaobank.yaml
4
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
service/customer LoadBalancer 10.254.68.219 133.186.203.188 80:30180/TCP 2m15s app=customer
service/database ClusterIP 10.254.42.199 <none> 2379/TCP 5m31s app=database
service/summary ClusterIP 10.254.57.208 <none> 80/TCP 5m31s app=summary
NAME READY UP-TO-DATE AVAILABLE AGE CONTAINERS IMAGES SELECTOR
deployment.apps/customer 1/1 1 1 5m31s customer calico/yaobank-customer:multiarch app=customer,version=v1
deployment.apps/database 1/1 1 1 5m31s database calico/yaobank-database:multiarch app=database,version=v1
deployment.apps/summary 2/2 2 2 5m31s summary calico/yaobank-summary:multiarch app=summary,version=v1
NAME DESIRED CURRENT READY AGE CONTAINERS IMAGES SELECTOR
replicaset.apps/customer-5dd6b8478 1 1 1 5m31s customer calico/yaobank-customer:multiarch app=customer,pod-template-hash=5dd6b8478,version=v1
replicaset.apps/database-57567d4c44 1 1 1 5m31s database calico/yaobank-database:multiarch app=database,pod-template-hash=57567d4c44,version=v1
replicaset.apps/summary-56c666dc9d 2 2 2 5m31s summary calico/yaobank-summary:multiarch app=summary,pod-template-hash=56c666dc9d,version=v1
133.186.203.188
5
# 확인
kubectl get all -n yaobank
# customer 파드 웹 접속 확인
CUSTOMER=$(kubectl get pods -n yaobank -l app=customer -o jsonpath={.items[0].status.podIP})
echo $CUSTOMER
curl $CUSTOMER
혹은
curl <노드IP>:>NodePort>
6
// centos
yum install -y lynx
(⎈|default:yaobank) [root@2048game-nhn-web01 ~]# lynx -dump 133.186.203.188:80
Welcome to YAO Bank
Name: Spike Curtis
Balance: 2389.45
[1]Log Out >>
References
1. http://133.186.203.188/logout
apt install -y lynx
lynx -dump <노드IP>:<NodePort>
[root@k8s-m:~ (DKOS-K8S:yaobank)]# lynx -dump 192.168.100.10:30180
Welcome to YAO Bank
Name: Spike Curtis
Balance: 2389.45
[1]Log Out >>
References
1. http://192.168.100.10:30180/logout
7
# customer 파드 Shell 접속 후 데이터베이스(etcd) 파드 접속 확인
CUSTOMER_POD=$(kubectl get pods -n yaobank -l app=customer -o name)
kubectl exec -it $CUSTOMER_POD -n yaobank -c customer -- /bin/bash
root@customer-5dd6b8478-ld525:/app#
-----------------------------------------
curl -s http://database:2379/v2/keys?recursive=true | python -m json.tool
exit
-----------------------------------------
8
# 혹은 직접 데이터베이스(etcd) 파드 접속 확인 : 5명의 account(고객) 정보 출력
// 안됨
DATABASE=$(kubectl get pods -n yaobank -l app=database -o jsonpath={.items[0].status.podIP})
curl -s $DATABASE:2379/v2/keys | jq curl -s $DATABASE:2379/v2/keys?recursive=true | jq
curl -s $DATABASE:2379/v2/keys?recursive=true | jq
9
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
service/customer LoadBalancer 10.254.68.219 133.186.203.188 80:30180/TCP 14m app=customer
service/database ClusterIP 10.254.42.199 <none> 2379/TCP 17m app=database
service/summary ClusterIP 10.254.57.208 <none> 80/TCP 17m app=summary
NAME READY UP-TO-DATE AVAILABLE AGE CONTAINERS IMAGES SELECTOR
deployment.apps/customer 1/1 1 1 17m customer calico/yaobank-customer:multiarch app=customer,version=v1
deployment.apps/database 1/1 1 1 17m database calico/yaobank-database:multiarch app=database,version=v1
deployment.apps/summary 2/2 2 2 17m summary calico/yaobank-summary:multiarch app=summary,version=v1
NAME DESIRED CURRENT READY AGE CONTAINERS IMAGES SELECTOR
replicaset.apps/customer-5dd6b8478 1 1 1 17m customer calico/yaobank-customer:multiarch app=customer,pod-template-hash=5dd6b8478,version=v1
replicaset.apps/database-57567d4c44 1 1 1 17m database calico/yaobank-database:multiarch app=database,pod-template-hash=57567d4c44,version=v1
replicaset.apps/summary-56c666dc9d 2 2 2 17m summary calico/yaobank-summary:multiarch app=summary,pod-template-hash=56c666dc9d,version=v1
10
# 삭제
kubectl delete -f yaobank.yaml
<3> 정리
type: LoadBalancer
변경후 접속 됨
감사합니다.
