网站首页做很多个关键词网站前台右侧怎么做二维码

假设有如下三个节点的 K8S 集群：

​

k8s31master 是控制节点

k8s31node1、k8s31node2 是工作节点

容器运行时是 containerd

 一、场景分析

阅读本文，默认您已经安装了 K8S Gateway。

关于 AB 测试、金丝雀发布，可以看这篇文章。

 二、实验准备

• 镜像下载

# 在各个工作节点下载
[root@k8s31node1 ~]# ctr -n=k8s.io images pull swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/openresty/openresty:latest
[root@k8s31node1 ~]# ctr -n=k8s.io images tag  swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/openresty/openresty:latest  docker.io/openresty/openresty:latest[root@k8s31node2 ~]# ctr -n=k8s.io images pull swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/openresty/openresty:latest
[root@k8s31node2 ~]# ctr -n=k8s.io images tag  swr.cn-north-4.myhuaweicloud.com/ddn-k8s/docker.io/openresty/openresty:latest  docker.io/openresty/openresty:latest

•  部署 v1

apiVersion: apps/v1
kind: Deployment
metadata:name: nginx-v1
spec:replicas: 1selector:matchLabels:app: nginxversion: v1template:metadata:labels:app: nginxversion: v1spec:containers:- name: nginximage: "openresty/openresty:latest"imagePullPolicy: IfNotPresentports:- name: httpprotocol: TCPcontainerPort: 80volumeMounts:- mountPath: /usr/local/openresty/nginx/conf/nginx.confname: configsubPath: nginx.confvolumes:- name: configconfigMap:name: nginx-v1
---
apiVersion: v1
kind: ConfigMap
metadata:labels:app: nginxversion: v1name: nginx-v1
data:nginx.conf: |-worker_processes  1;events {accept_mutex on;multi_accept on;use epoll;worker_connections  1024;}http {ignore_invalid_headers off;server {listen 80;location / {access_by_lua 'local header_str = ngx.say("nginx-v1")';}}}
---
apiVersion: v1
kind: Service
metadata:name: nginx-v1
spec:type: ClusterIPports:- port: 80protocol: TCPname: httpselector:app: nginxversion: v1

该 yml 定义了三个资源 ConfigMap、Deployment、Service。

• ConfigMap 定义了一个 nginx.conf 配置文件，使用 lua 脚本输出 nginx-v1。
• Deployment 定义了一个 Pod，里面运行 openresty 它是一个封装了 nginx+lua 的 web 服务器。Pod 有两个标签 app: nginx、version: v1。
• Service 代理了 Deployment 运行的 Pod。

部署 v2

apiVersion: apps/v1
kind: Deployment
metadata:name: nginx-v2
spec:replicas: 1selector:matchLabels:app: nginxversion: v2template:metadata:labels:app: nginxversion: v2spec:containers:- name: nginximage: "openresty/openresty:latest"imagePullPolicy: IfNotPresentports:- name: httpprotocol: TCPcontainerPort: 80volumeMounts:- mountPath: /usr/local/openresty/nginx/conf/nginx.confname: configsubPath: nginx.confvolumes:- name: configconfigMap:name: nginx-v2
---
apiVersion: v1
kind: ConfigMap
metadata:labels:app: nginxversion: v2name: nginx-v2
data:nginx.conf: |-worker_processes  1;events {accept_mutex on;multi_accept on;use epoll;worker_connections  1024;}http {ignore_invalid_headers off;server {listen 80;location / {access_by_lua 'local header_str = ngx.say("nginx-v2")';}}}
---
apiVersion: v1
kind: Service
metadata:name: nginx-v2
spec:type: ClusterIPports:- port: 80protocol: TCPname: httpselector:app: nginxversion: v2

三、AB 测试

1）创建 gateway

apiVersion: gateway.networking.k8s.io/v1
kind: Gateway
metadata:name: nginx-gatewaynamespace: default
spec:gatewayClassName: nginxlisteners:- name: httpprotocol: HTTPport: 80

 2）创建 httproute

apiVersion: gateway.networking.k8s.io/v1
kind: HTTPRoute
metadata:name: abtest-routenamespace: default
spec:parentRefs:- name: nginx-gatewayhostnames:- "abtest.example.com"rules:- matches:- path:type: PathPrefixvalue: / headers:- name: "version"value: "v1"backendRefs:- name: nginx-v1kind: Serviceport: 80- matches:- path:type: PathPrefixvalue: /headers:- name: "version"value: "v2"  backendRefs:- name: nginx-v2kind: Serviceport: 80

• parentRefs：绑定我们新建的 gateway。
• hostnames：定义访问的主机名。
• rules.matches：定义路由规则，PathPrefix 表示路径前缀匹配。headers 对请求头进行匹配。
• backendRefs：定义后端服务以及服务端口。

 3）测试

curl -H "Host: abtest.example.com" -H "version: v1" http://192.168.40.20:30185/
curl -H "Host: abtest.example.com" -H "version: v2" http://192.168.40.20:30185/

 30185 为 nginx-gateway-controller 80 映射端口。

 四、金丝雀发布

 1）创建 httproute

apiVersion: gateway.networking.k8s.io/v1
kind: HTTPRoute
metadata:name: canary-routenamespace: default
spec:parentRefs:- name: nginx-gatewayhostnames:- "canary.example.com"rules:- matches:- path:type: PathPrefixvalue: / backendRefs:- name: nginx-v1kind: Serviceport: 80weight: 10- name: nginx-v2kind: Serviceport: 80weight: 90

 backendRefs.weight 定义流量分发的权重。

 2）测试

for i in {1..20}; do curl -H "Host: canary.example.com" http://192.168.40.20:30185/; done;