[单master节点k8s部署]26.Istio流量管理（二）
bookinfo微服务
这个bookinfo微服务由四个微服务构成：
1）productpage 这个微服务会调用 details 和 reviews 两个微服务，用来生成页面；
2）details 这个微服务中包含了书籍的信息；
3）reviews 这个微服务中包含了书籍相关的评论，它还会调用 ratings 微服务；
4）ratings 这个微服务中包含了由书籍评价组成的评级信息。
但是在我们的部署中，reviews会有三个版本。可以从上图看到，Reviews-v1不会调用ratings服务。
Bookinfo 应用中的几个微服务是由不同的语言编写的。这些服务对 istio 并无依赖，但是构成了一
个有代表性的服务网格的例子：它由多个服务、多个语言构成，并且 reviews 服务具有多个版本。
部署bookinfo
运行yaml文件，可以看到生成了4个service和6个pod。
[root@master kube]# kubectl apply -f bookinfo.yaml
service/details created
serviceaccount/bookinfo-details created
deployment.apps/details-v1 created
service/ratings created
serviceaccount/bookinfo-ratings created
deployment.apps/ratings-v1 created
service/reviews created
serviceaccount/bookinfo-reviews created
deployment.apps/reviews-v1 created
deployment.apps/reviews-v2 created
deployment.apps/reviews-v3 created
service/productpage created
serviceaccount/bookinfo-productpage created
deployment.apps/productpage-v1 created
[root@master kube]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
details ClusterIP 10.104.215.136 <none> 9080/TCP 4m1s
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 68d
productpage ClusterIP 10.108.250.186 <none> 9080/TCP 4m
ratings ClusterIP 10.98.108.1 <none> 9080/TCP 4m
reviews ClusterIP 10.97.52.159 <none> 9080/TCP 4m
[root@master kube]# kubectl get pods
NAME READY STATUS RESTARTS AGE
counter 1/1 Running 0 39h
details-v1-bb75d85bd-rf7sd 2/2 Running 0 4m7s
nfs-provisioner31-7ff77966b6-99zz6 1/1 Running 0 45h
productpage-v1-65b75f6885-t5t9r 2/2 Running 0 4m7s
ratings-v1-78c878b684-qjbph 2/2 Running 0 4m7s
reviews-v1-fc556f884-qzmqd 2/2 Running 0 4m7s
reviews-v2-7b9f457b6-c9zpp 2/2 Running 0 4m7s
reviews-v3-7667fbd77b-sppg4 2/2 Running 0 4m7s
bookinfo代码
第一部分：
details，可以看到有一个service，一个ServiceAccount和一个deployment，其中这里定义了 securityContext:runAsUser: 1000，这是为了防止进程以root权限运行，这里规定进程以用户ID 1000运行。
##################################################################################################
# Details service
##################################################################################################
apiVersion: v1
kind: Service
metadata:
name: details
labels:
app: details
service: details
spec:
ports:
- port: 9080
name: http
selector:
app: details
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: bookinfo-details
labels:
account: details
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: details-v1
labels:
app: details
version: v1
spec:
replicas: 1
selector:
matchLabels:
app: details
version: v1
template:
metadata:
labels:
app: details
version: v1
spec:
serviceAccountName: bookinfo-details
containers:
- name: details
image: docker.io/istio/examples-bookinfo-details-v1:1.15.0
imagePullPolicy: IfNotPresent
ports:
- containerPort: 9080
securityContext:
runAsUser: 1000
第二部分：
##################################################################################################
# Ratings service
##################################################################################################
apiVersion: v1
kind: Service
metadata:
name: ratings
labels:
app: ratings
service: ratings
spec:
ports:
- port: 9080
name: http
selector:
app: ratings
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: bookinfo-ratings
labels:
account: ratings
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: ratings-v1
labels:
app: ratings
version: v1
spec:
replicas: 1
selector:
matchLabels:
app: ratings
version: v1
template:
metadata:
labels:
app: ratings
version: v1
spec:
serviceAccountName: bookinfo-ratings
containers:
- name: ratings
image: docker.io/istio/examples-bookinfo-ratings-v1:1.15.0
imagePullPolicy: IfNotPresent
ports:
- containerPort: 9080
securityContext:
runAsUser: 1000
第三部分：
##################################################################################################
# Reviews service
##################################################################################################
apiVersion: v1
kind: Service
metadata:
name: reviews
labels:
app: reviews
service: reviews
spec:
ports:
- port: 9080
name: http
selector:
app: reviews
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: bookinfo-reviews
labels:
account: reviews
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: reviews-v1
labels:
app: reviews
version: v1
spec:
replicas: 1
selector:
matchLabels:
app: reviews
version: v1
template:
metadata:
labels:
app: reviews
version: v1
spec:
serviceAccountName: bookinfo-reviews
containers:
- name: reviews
image: docker.io/istio/examples-bookinfo-reviews-v1:1.15.0
imagePullPolicy: IfNotPresent
env:
- name: LOG_DIR
value: "/tmp/logs"
ports:
- containerPort: 9080
volumeMounts:
- name: tmp
mountPath: /tmp
- name: wlp-output
mountPath: /opt/ibm/wlp/output
securityContext:
runAsUser: 1000
volumes:
- name: wlp-output
emptyDir: {}
- name: tmp
emptyDir: {}
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: reviews-v2
labels:
app: reviews
version: v2
spec:
replicas: 1
selector:
matchLabels:
app: reviews
version: v2
template:
metadata:
labels:
app: reviews
version: v2
spec:
serviceAccountName: bookinfo-reviews
containers:
- name: reviews
image: docker.io/istio/examples-bookinfo-reviews-v2:1.15.0
imagePullPolicy: IfNotPresent
env:
- name: LOG_DIR
value: "/tmp/logs"
ports:
- containerPort: 9080
volumeMounts:
- name: tmp
mountPath: /tmp
- name: wlp-output
mountPath: /opt/ibm/wlp/output
securityContext:
runAsUser: 1000
volumes:
- name: wlp-output
emptyDir: {}
- name: tmp
emptyDir: {}
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: reviews-v3
labels:
app: reviews
version: v3
spec:
replicas: 1
selector:
matchLabels:
app: reviews
version: v3
template:
metadata:
labels:
app: reviews
version: v3
spec:
serviceAccountName: bookinfo-reviews
containers:
- name: reviews
image: docker.io/istio/examples-bookinfo-reviews-v3:1.15.0
imagePullPolicy: IfNotPresent
env:
- name: LOG_DIR
value: "/tmp/logs"
ports:
- containerPort: 9080
volumeMounts:
- name: tmp
mountPath: /tmp
- name: wlp-output
mountPath: /opt/ibm/wlp/output
securityContext:
runAsUser: 1000
volumes:
- name: wlp-output
emptyDir: {}
- name: tmp
emptyDir: {}
第四部分：
##################################################################################################
# Productpage services
##################################################################################################
apiVersion: v1
kind: Service
metadata:
name: productpage
labels:
app: productpage
service: productpage
spec:
ports:
- port: 9080
name: http
selector:
app: productpage
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: bookinfo-productpage
labels:
account: productpage
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: productpage-v1
labels:
app: productpage
version: v1
spec:
replicas: 1
selector:
matchLabels:
app: productpage
version: v1
template:
metadata:
labels:
app: productpage
version: v1
spec:
serviceAccountName: bookinfo-productpage
containers:
- name: productpage
image: docker.io/istio/examples-bookinfo-productpage-v1:1.16.2
imagePullPolicy: IfNotPresent
ports:
- containerPort: 9080
volumeMounts:
- name: tmp
mountPath: /tmp
securityContext:
runAsUser: 1000
volumes:
- name: tmp
emptyDir: {}
设置bookinfo
确认它在运行：
kubectl exec -it $(kubectl get pod -l app=ratings -o jsonpath='{.items[0].metadata.name}') -c ratings -- curl productpage:9080/productpage | grep -o "<title>.*</title>"返回结果如下，证明bookinfo正在正常运行。
原文地址：https://blog.csdn.net/weixin_45396500/article/details/142553264
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