安装部署 Minikube 和 Istio
环境：AWS EC2, Amazon Linux 2, 16G RAM, 2 CPUs
安装 kubectl （文档）
curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl
chmod +x ./kubectl
sudo mv ./kubectl /usr/local/bin/kubectl
kubectl version --client
安装 Minikube （文档）
curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 \
&& chmod +x minikube
sudo mkdir -p /usr/local/bin/
sudo install minikube /usr/local/bin/
安装完成后，确认状态
sudo minikube start --vm-driver=none
minikube status
一切正常，会显示以下状态：
host: Running
kubelet: Running
apiserver: Running
kubeconfig: Configured
部署一个 Deployment 试试吧
sudo kubectl create deployment hello-minikube --image=k8s.gcr.io/echoserver:1.10
sudo kubectl expose deployment hello-minikube --type=NodePort --port=8080
sudo kubectl get pod
sudo minikube service hello-minikube --url
sudo kubectl delete services hello-minikube
sudo kubectl delete deployment hello-minikube
安装 istioctl
curl -L https://istio.io/downloadIstio | sh -
cd istio-1.4.5
cp bin/istioctl /usr/local/bin/
安装 Istio
sudo istioctl manifest apply --set profile=demo
验证以下 Kubernetes services 已经正常部署了。
$ sudo kubectl get svc -n istio-system
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
grafana ClusterIP 10.108.44.2 <none> 3000/TCP 35s
istio-citadel ClusterIP 10.105.146.227 <none> 8060/TCP,15014/TCP 21m
istio-egressgateway ClusterIP 10.106.189.119 <none> 80/TCP,443/TCP,15443/TCP 37s
istio-galley ClusterIP 10.107.234.119 <none> 443/TCP,15014/TCP,9901/TCP,15019/TCP 21m
istio-ingressgateway LoadBalancer 10.102.150.117 <pending> 15020:32434/TCP,80:30018/TCP,443:32092/TCP,15029:31992/TCP,15030:32662/TCP,15031:32151/TCP,15032:30452/TCP,15443:30553/TCP 21m
istio-pilot ClusterIP 10.103.255.170 <none> 15010/TCP,15011/TCP,8080/TCP,15014/TCP 21m
istio-policy ClusterIP 10.102.35.129 <none> 9091/TCP,15004/TCP,15014/TCP 21m
istio-sidecar-injector ClusterIP 10.99.167.32 <none> 443/TCP 21m
istio-telemetry ClusterIP 10.101.31.38 <none> 9091/TCP,15004/TCP,15014/TCP,42422/TCP 21m
jaeger-agent ClusterIP None <none> 5775/UDP,6831/UDP,6832/UDP 57s
jaeger-collector ClusterIP 10.111.79.159 <none> 14267/TCP,14268/TCP,14250/TCP 56s
jaeger-query ClusterIP 10.103.181.224 <none> 16686/TCP 50s
kiali ClusterIP 10.98.134.20 <none> 20001/TCP 40s
prometheus ClusterIP 10.96.136.180 <none> 9090/TCP 21m
tracing ClusterIP 10.108.234.135 <none> 80/TCP 44s
zipkin ClusterIP 10.105.219.40 <none> 9411/TCP 41s
同时，验证相应的 Kubernetes pods 已经部署了并且状态为 Running
$ sudo kubectl get pods -n istio-system
NAME READY STATUS RESTARTS AGE
grafana-6b65874977-c94qn 1/1 Running 0 3m11s
istio-citadel-7d4689c4cf-fgx9n 1/1 Running 0 24m
istio-egressgateway-679b746848-xnrtg 1/1 Running 0 3m30s
istio-galley-6b8dfcc549-vwvnv 1/1 Running 0 3m30s
istio-ingressgateway-db547d98-7zc7h 1/1 Running 0 3m31s
istio-pilot-85d8f75c4-sxzdt 1/1 Running 0 3m24s
istio-policy-6845468548-5gztc 1/1 Running 0 3m30s
istio-sidecar-injector-6fdc95467f-kxlr8 1/1 Running 0 24m
istio-telemetry-5b994fddc6-rpqpr 1/1 Running 0 3m29s
istio-tracing-c66d67cd9-fb5hw 1/1 Running 1 3m31s
kiali-8559969566-qtg57 1/1 Running 0 3m16s
prometheus-66c5887c86-kz2hv 1/1 Running 0 24m
Given two binary strings, return their sum (also a binary string).
The input strings are both non-empty and contains only characters 1 or 0.
Example 1:
Input: a = "11", b = "1"
Output: "100"
Example 1:
Input: a = "1010", b = "1011"
Output: "10101"
如何设置 sudo 命令下的默认 PATH？
编辑文件 /etc/sudoers，找到 Defaults secure_path = 行，将需要新增的路径加入的参数值中 /sbin:/bin:/usr/sbin:/usr/bin。
😷 😷 😷 😷 😷 😷 😷 😷 😷
这就是 2020 年的我们的状态了。