k8s 1.23 使用 helm3部署traefik2

traefik详细说明：https://www.qikqiak.com/traefik-book/
环境说明：
k8s 1.23.4
helm3 3.8

一、添加traefik仓库

#添加 Traefik v2 helm chart
helm repo add traefik https://helm.traefik.io/traefik

# 更新下仓库
helm repo update 

#查询repo
helm repo list

二、部暑traefik2

#
mkdir -p /data/traefik2
cd /data/traefik2

#下载traefik2
helm pull traefik/traefik  --version 10.19.4

#提取values.yaml文件
tar zxvf traefik-10.19.4.tgz --strip-components 1 traefik/values.yaml 

cat > /data/traefik2/start.sh << 'EOF'
helm install traefik2 traefik-10.19.4.tgz -f values.yaml -n kube-system
EOF

bash /data/traefik2/start.sh

三、更新traefik2

#helm3 升级
cat > /data/traefik2/upgrade.sh << 'EOF'
helm upgrade traefik2 traefik-10.19.4.tgz -f values.yaml -n kube-system
cp values.yaml values.yaml.bak_`date +%F_%R`
EOF

四、配置values.yaml
选择部分配置

deployment:
  #部暑的副本数量
  replicas: 1

#let's encrypt配置
#additionalArguments:
# - "--certificatesresolvers.defalut.acme.storage=/data/acme.json"
#  - --certificatesresolvers.default.acme.tlschallenge
#  - --certificatesresolvers.default.acme.email=me@myself.com
#  - --certificatesresolvers.default.acme.caserver=https://acme-staging-v02.api.letsencrypt.org/directory

#日志相关配置
logs:
  general:
    level: ERROR
  access:
    enabled: true
    format: json
    bufferingSize: 100
    filters: 
      statuscodes: "200,300-302"
      retryattempts: true
      minduration: 10ms
    fields:
      general:
        defaultmode: keep
        names: 
          ClientUsername: drop
      headers:
        defaultmode: drop
        names: 
          User-Agent: redact
          Authorization: drop
          Content-Type: keep

#全局参数，开启dashboard,metrics等
globalArguments:
  - "--global.checknewversion"
  - "--global.sendanonymoususage"
  - "--serversTransport.insecureSkipVerify=true"
  - "--api.insecure=true"
  - "--api.dashboard=true"
  - "--metrics.prometheus=true"
  - "--metrics.prometheus.buckets=0.100000, 0.300000, 1.200000, 5.000000"
  - "--metrics.prometheus.addEntryPointsLabels=true"
  - "--metrics.prometheus.addServicesLabels=true"
  - "--metrics.prometheus.entryPoint=metrics"
  - "--metrics.prometheus.manualrouting=true"
  #- "--entryPoints.metrics.address=:8020"
  #- "--metrics.prometheus.manualrouting=true"
  # zinkin tracing 配置
  - "--tracing.zipkin=true"
  - "--tracing.zipkin.httpEndpoint=http://localhost:9411/api/v2/spans"
  - "--tracing.zipkin.sameSpan=true"
  - "--tracing.zipkin.id128Bit=false"
  - "--tracing.zipkin.sampleRate=0.2"
#端口暴露配置
ports:
  traefik:
    port: 9000
    # hostPort: 9000
    # hostIP: 192.168.100.10
    expose: true
    exposedPort: 9000
    protocol: TCP
    nodePort: 29000
  web:
    port: 8000
    # hostPort: 8000
    expose: true
    exposedPort: 80
    protocol: TCP
    nodePort: 20080
    # redirectTo: websecure
  websecure:
    port: 8443
    # hostPort: 8443
    expose: true
    exposedPort: 443
    protocol: TCP
    nodePort: 20443
  #设置tcp代理  
  mongo:
    port: 27017
    expose: true
    exposedPort: 27017
    protocol: TCP
    #hostPort: 27017
    nodePort: 27017
#资源限制
resources:
  requests:
    cpu: "100m"
    memory: "50Mi"
  limits:
    cpu: "300m"
    memory: "150Mi"

#端口暴露方式
service:
  #type: LoadBalancer
  type: NodePort

启动traefik2

bash /data/traefik2/start.sh

五、访问管理后台：
http://192.168.11.211:29000/dashboard/#/

六 、把traefik的dashboard发布到http接口上

cat > /data/traefik2/traefik_dashboard.yaml << 'EOF'
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: traefik-dashboard-route
  namespace: kube-system      #配置命名空间
spec:
  entryPoints:
    - web
#  tls:
#    secretName: cloudfe-cert-tls
  routes:
    - match: Host(`traefik.kids.cn`) && PathPrefix(`/`)  #配置域名
      kind: Rule
      services:
        - name: traefik2   #与sevicename对应
          port: 9000       #与serviceport对应
EOF

七、traefik中间件

• 7.1basicauth验证

帐号密码生成工具：http://web.chacuo.net/nethtpasswd

cat > /data/traefik2/traefik_authsecret.yaml  << 'EOF'
apiVersion: v1
kind: Secret
metadata:
  name: traefik-authsecret
  namespace: kube-system
type: Opaque
stringData:
  users: test:$apr1$XeP7Hl7a$HZggi6xLd5IlYFrOxFNpe1
EOF

配置 BasicAuth 中间件

cat > /data/traefik2/traefik_basic_auth.yaml << 'EOF'
apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
  name: traefik-basic-auth
  namespace: kube-system
spec:
  basicAuth:
    secret: traefik-authsecret
EOF

重新配置 Ingress Route

cat > /data/traefik2/traefik_dashboard.yaml << 'EOF'
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: traefik-dashboard-route
  namespace: kube-system      #配置命名空间
spec:
  entryPoints:
    - web
#  tls:
#    secretName: cloudfe-cert-tls
  routes:
    - match: Host(`traefik.kids.cn`)  #配置域名
      kind: Rule
      services:
        - name: traefik2   #与sevicename对应
          port: 9000       #与serviceport对应
      middlewares:
        - name: traefik-basic-auth
EOF
应用配置
kubectl apply -f traefik_authsecret.yaml
kubectl apply -f traefik_basic_auth.yaml
kubectl apply -f traefik_dashboard.yaml

访问地址：http://traefik.kids.cn:20080/dashboard/#/

帐号，密码： test/test

• 7.2 https

7.2.1 #自签证书

cd /data/traefik2/
#创建证书
openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout traefik-tls.key -out traefik-tls.crt -subj "/CN=*.kids.cn"

#通过 Secret 对象来引用证书文件
kubectl create secret tls traefik-tls --cert=traefik-tls.crt --key=traefik-tls.key -n kube-system

#修改 ingressroute
cat  > /data/traefik2/traefik_dashboard_https.yaml << 'EOF'
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: traefik-dashboard-route-tls
  namespace: kube-system      #配置命名空间
spec:
  entryPoints:
    - websecure
  routes:
    - match: Host(`traefik.kids.cn`)  #配置域名
      kind: Rule
      services:
        - name: traefik2   #与sevicename对应
          port: 9000       #与serviceport对应
      middlewares:
        - name: traefik-basic-auth
  tls:
    secretName: traefik-tls
EOF

7.2.2 Let’s Encrypt 来进行自动化 HTTPS

cat > /data/traefik2/certificatesresolvers.yaml << 'EOF'
certificatesresolvers:
  default:
    acme:
      tlsChallenge: {}
      email: "xbzeng@163.com"
      storage: "acme.json"
EOF

#在IngressRoute中引用
  tls:
    certResolver: default

7.2.3 traefik使用cert-manager自签证书
cert-manager 的helm3安装方法https://blog.csdn.net/u010533742/article/details/120201547

cat > /data/cert-manager/ca-sign.yaml << 'EOF'
apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: ca-issuer
  namespace: cert-manager
spec:
  selfSigned: {}
EOF

kubectl apply -f /data/cert-manager/ca-sign.yaml

#创建Certificate资源
cat >/data/cert-manager/Certificate.yaml<< EOF
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: kids-cn
  namespace: kube-system
spec:
  secretName: kids-cn-tls
  duration: 2160h # 90d
  renewBefore: 360h # 15d
  privateKey:
    algorithm: ECDSA
    size: 256
#    algorithm: RSA
#    encoding: PKCS1
#    size: 2048
  issuerRef:
    name: ca-issuer
    kind: ClusterIssuer
    group: cert-manager.io
  commonName: kids.cn
  dnsNames:
  - kids.cn
  - www.kids.cn
  - traefik.kids.cn
  ipAddresses:
    - 127.0.0.1
EOF

kubectl apply -f /data/cert-manager/Certificate.yaml

#修改 ingressroute
cat  > /data/traefik2/traefik_dashboard_https.yaml << 'EOF'
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: traefik-dashboard-route-tls
  namespace: kube-system      #配置命名空间
spec:
  entryPoints:
    - websecure
  routes:
    - match: Host(`traefik.kids.cn`)  #配置域名
      kind: Rule
      services:
        - name: traefik2   #与sevicename对应
          port: 9000       #与serviceport对应
#      middlewares:
#        - name: traefik-basic-auth
  tls:
    secretName: kids-cn-tls
EOF

kubectl apply -f /data/traefik2/traefik_dashboard_https.yaml

7.3 希望用户通过 https 来访问应用（http自动跳转到https）

cat > /data/traefik2/redirect-https.yaml << 'EOF'
apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
  name: redirect-https
  namespace: kube-system
spec:
  redirectScheme:
    scheme: https
    port: "20443"
    permanent: true
EOF

在IngressRoute中引用中间件

      middlewares:
        - name: redirect-https      #引用中间件

7.4 替换路径

apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
  name: test-replacepathregex
  namespace: kube-system
spec:
  replacePathRegex:
    regex: ^/foo/(.*)
    replacement: /bar/

在IngressRoute中引用中间件

      middlewares:
        - name: test-replacepathregex      #引用中间件

7.5 去掉路径

apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
  name: test-stripprefix
spec:
  stripPrefix:
    prefixes:
      - /foobar
      - /fiibar

在IngressRoute中引用中间件

      middlewares:
        - name: test-stripprefix      #引用中间件

7.6 TCP代理

cat > /data/traefik2/tcp_mongo.yaml << 'EOF'
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRouteTCP
metadata:
  name: mongo-route
  namespace: base      #配置命名空间
spec:
  entryPoints:
    - mongo
  routes:
    - match: Host(`*`)  # TCP 路由配置需要 SNI，而 SNI 有是依赖 TLS 的，所以我们需要配置证书才行，但是如果没有证书的话，我们可以使用通配符 *
      kind: Rule
      services:
      - name: mongo   #与sevicename对应
        port: 27017       #与serviceport对应
EOF

或者
cat > /data/traefik2/tcp_mongo_sni.yaml << 'EOF'
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRouteTCP
metadata:
  name: mongo-route
  namespace: base      #配置命名空间
spec:
  entryPoints:
    - mongo
  routes:
    - match: Host(`mongo.kids.cn`)  #配置域名
      kind: Rule
      services:
      - name: mongo   #与sevicename对应
        port: 27017       #与serviceport对应
  tls:
    secretName: traefik-tls
    passthrough: true
EOF