ISTIO环境搭建02 – Neohope's Blog

换了3个云厂商，才把最后的例子跑完。。。

1、下载示例源码

git clone https://github.com/istio/istio.git
Cloning into 'istio'...

2、生成镜像

cd istio/samples/helloworld/src
./build_service.sh
Sending build context to Docker daemon  7.168kB
Step 1/8 : FROM python:2-onbuild
2-onbuild: Pulling from library/python
......

sudo docker images
REPOSITORY                           TAG                 IMAGE ID            CREATED             SIZE
istio/examples-helloworld-v2         latest              2c7736ccfb8b        45 seconds ago      713MB
istio/examples-helloworld-v1         latest              20be3b24eab7        46 seconds ago      713MB

3、镜像发到其他节点

# 备份镜像
sudo docker save -o hello1.tar 20be3b24eab7
sudo docker save -o hello2.tar 2c7736ccfb8b

# 镜像发送到其他3个节点，并导入
# 对于每个节点做下面的操作
scp -i ~/hwk8s.pem hello1.tar root@192.168.1.229:~/
scp -i ~/hwk8s.pem hello2.tar root@192.168.1.229:~/

ssh -i 192.168.1.229

sudo docker load -i hello1.tar
sudo docker tag 20be3b24eab7 istio/examples-helloworld-v1:latest

sudo docker load -i hello2.tar
sudo docker tag 2c7736ccfb8b istio/examples-helloworld-v2:latest

exit

4、部署helloworld

kubectl apply -f helloworld.yaml
service/helloworld created
deployment.apps/helloworld-v1 created
deployment.apps/helloworld-v2 created

kubectl apply -f helloworld-gateway.yaml
gateway.networking.istio.io/helloworld-gateway created
virtualservice.networking.istio.io/helloworld created

kubectl get pods
kubectl get deployments

5、测试并生成流量

# 设置环境变量
# 这里IP要选用内网IP
export INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].nodePort}')
export GATEWAY_URL=192.168.1.124:$INGRESS_PORT

# 测试一下，会发现两次访问会用不同版本的服务
curl http://$GATEWAY_URL/hello
Hello version: v1, instance: helloworld-v1-5b75657f75-9dss5
curl http://$GATEWAY_URL/hello
Hello version: v2, instance: helloworld-v2-7855866d4f-rd2tr

# 也可以在外网，通过浏览器浏览
# 这里IP要选用外网IP
# 同样的，刷新浏览器会在不同版本服务之间切换
http://159.138.135.216:INGRESS_PORT/hello

# 生成访问流量
./loadgen.sh

6、使用kiali查看相关信息

#kiali 20001
istioctl dashboard kiali

#按上一节方法修改nginx配置内部端口
#重新加载配置
nginx -s reload

# 浏览器访问
http://159.138.135.216:8000

7、其他dashboard信息也可以用相同方法访问

#grafana 3000
istioctl dashboard grafana
#jaeger  16686
istioctl dashboard jaeger
#kiali 20001
istioctl dashboard kiali
#prometheus 9090
istioctl dashboard prometheus
#podid 9876
istioctl dashboard controlz podid
#podid 15000
istioctl dashboard envoy podid
#zipkin
istioctl dashboard zipkin

#按上一节方法修改nginx配置内部端口
#重新加载配置
nginx -s reload

# 浏览器访问
http://159.138.135.216:8000

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