错误503后端获取失败,大师冥想:XID:45654清漆缓存服务器

问题描述 投票:1回答:1

[我为在kubernetes集群中运行的清漆缓存服务器创建了舵图,同时使用“外部IP”进行测试时产生了抛出错误,请在下面共享

在下面共享varnish.vcl,values.yaml和deployment.yaml。我将后端/ Web服务器硬编码为端口为“ 80”的.host =“ www.varnish-cache.org”时,有关如何解决的任何建议。我的要求是在执行curl -IL时,我应该使用不如上所述的缓存值(直接从后端服务器)获取响应。.

欢迎任何解决方案/方法。

varnish.vcl:

# VCL version 5.0 is not supported so it should be 4.0 or 4.1 even though actually used Varnish version is 6
vcl 4.1;

import std;
# The minimal Varnish version is 5.0
# For SSL offloading, pass the following header in your proxy server or load balancer: 'X-Forwarded-Proto: https'



{{  .Values.varnishconfigData | indent 2 }}







sub vcl_recv {
  if(req.url == "/healthcheck") {
    return(synth(200,"OK"));
  }
}


sub vcl_deliver {
    if (obj.hits > 0) {
        set resp.http.X-Cache = "cached";
    } else {
        set resp.http.X-Cache = "uncached";
    }
}

values.yaml:

# Default values for tt.
# This is a YAML-formatted file.
# Declare variables to be passed into your templates.

replicaCount: 1



#varnishBackendService: "www.varnish-cache.org"
#varnishBackendServicePort: "80"

image:
  repository: varnish
  tag: 6.3
  pullPolicy: IfNotPresent

nameOverride: ""
fullnameOverride: ""

service:
#  type: ClusterIP
  type: LoadBalancer
  port: 80
#  externalIPs: 192.168.0.10




varnishconfigData: |- 
      backend default {
         .host = "www.varnish-cache.org";
         .host = "100.68.38.132"
         .port = "80";
         .first_byte_timeout = 60s;
         .connect_timeout = 300s ;
         .probe = {
                .url = "/";
                .timeout = 1s;
                .interval = 5s;
                .window = 5;
                .threshold = 3;
           }
          }
         sub vcl_backend_response {
          set beresp.ttl = 5m;
         }




ingress:
  enabled: false
  annotations: {}
    # kubernetes.io/ingress.class: nginx
    # kubernetes.io/tls-acme: "true"
  path: /
  hosts:
    - chart-example.local
  tls: []
  #  - secretName: chart-example-tls
  #    hosts:
  #      - chart-example.local

resources:
  limits:
    memory: 128Mi
  requests:
    memory: 64Mi

#resources: {}
  # We usually recommend not to specify default resources and to leave this as a conscious
  # choice for the user. This also increases chances charts run on environments with little
  # resources, such as Minikube. If you do want to specify resources, uncomment the following
  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
  # limits:
  #  cpu: 100m
  #  memory: 128Mi
  # requests:
  #  cpu: 100m
  #  memory: 128Mi

nodeSelector: {}

tolerations: []

affinity: {}

Deployment.yaml:

apiVersion: apps/v1beta2
kind: Deployment
metadata:
  name: {{ include "varnish.fullname" . }}
  labels:
    app: {{ include "varnish.name" . }}
    chart: {{ include "varnish.chart" . }}
    release: {{ .Release.Name }}
    heritage: {{ .Release.Service }}
spec:
  replicas: {{ .Values.replicaCount }}
  selector:
    matchLabels:
      app: {{ include "varnish.name" . }}
      release: {{ .Release.Name }}
  template:
    metadata:
      labels:
        app: {{ include "varnish.name" . }}
        release: {{ .Release.Name }}
    spec:
      volumes: 
        - name: varnish-config
          configMap:
             name: {{ include "varnish.fullname" . }}-varnish-config
             items:
               - key: default.vcl
                 path: default.vcl
      containers:
        - name: {{ .Chart.Name }}
          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
          imagePullPolicy: {{ .Values.image.pullPolicy }} 
         # command: ["/bin/sh"]
         # args: ["-c", "while true; do service varnishd status, varnishlog;  sleep 10;done"]   
          env:
          - name: VARNISH_VCL
            value: /etc/varnish/default.vcl
          volumeMounts: 
            - name: varnish-config
              mountPath : /etc/varnish/
          ports:
            - name: http
              containerPort: 80
              protocol: TCP
              targetPort: 80
          livenessProbe: 
            httpGet:
              path: /healthcheck
              port: http
              port: 80
            failureThreshold: 3
            initialDelaySeconds: 45
            timeoutSeconds: 10
            periodSeconds: 20
          readinessProbe:
            httpGet:
              path: /healthcheck
              port: http
              port: 80
            initialDelaySeconds: 10
            timeoutSeconds: 15
            periodSeconds: 5
          restartPolicy: "Always"
          resources:
{{ toYaml .Values.resources | indent 12 }}
    {{- with .Values.nodeSelector }}
      nodeSelector:
{{ toYaml . | indent 8 }}
    {{- end }}
    {{- with .Values.affinity }}
      affinity:
{{ toYaml . | indent 8 }}
    {{- end }}
    {{- with .Values.tolerations }}
      tolerations:
{{ toYaml . | indent 8 }}
    {{- end }}

已用清漆日志检查过,执行了varnishlog -c并得到以下输出

*   << Request  >> 556807    
-   Begin          req 556806 rxreq
-   Timestamp      Start: 1584534974.251924 0.000000 0.000000
-   Timestamp      Req: 1584534974.251924 0.000000 0.000000
-   VCL_use        boot
-   ReqStart       100.115.128.0 26466 a0
-   ReqMethod      GET
-   ReqURL         /healthcheck
-   ReqProtocol    HTTP/1.1
-   ReqHeader      Host: 100.115.128.11:80
-   ReqHeader      User-Agent: kube-probe/1.14
-   ReqHeader      Accept-Encoding: gzip
-   ReqHeader      Connection: close
-   ReqHeader      X-Forwarded-For: 100.115.128.0
-   VCL_call       RECV
-   VCL_return     synth
-   VCL_call       HASH
-   VCL_return     lookup
-   Timestamp      Process: 1584534974.251966 0.000042 0.000042
-   RespHeader     Date: Wed, 18 Mar 2020 12:36:14 GMT
-   RespHeader     Server: Varnish
-   RespHeader     X-Varnish: 556807
-   RespProtocol   HTTP/1.1
-   RespStatus     200
-   RespReason     OK
-   RespReason     OK
-   VCL_call       SYNTH
-   RespHeader     Content-Type: text/html; charset=utf-8
-   RespHeader     Retry-After: 5
-   VCL_return     deliver
-   RespHeader     Content-Length: 229
-   Storage        malloc Transient
-   Filters        
-   RespHeader     Accept-Ranges: bytes
-   RespHeader     Connection: close
-   Timestamp      Resp: 1584534974.252121 0.000197 0.000155
-   ReqAcct        125 0 125 210 229 439
-   End      
kubernetes kubernetes-helm varnish
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