Я создал таблицу управления для кеш-сервера varni sh, который работает в кластере kubernetes, в то время как тестирование с «внешним IP-адресом» сгенерировало ошибку метания, делясь ниже
HTTP/1.1 503 Backend fetch failed
Date: Tue, 17 Mar 2020 08:20:52 GMT
Server: Varnish
Content-Type: text/html; charset=utf-8
Retry-After: 5
X-Varnish: 570521
Age: 0
Via: 1.1 varnish (Varnish/6.3)
X-Cache: uncached
Content-Length: 283
Connection: keep-alive
Sharing varni sh .vcl, values.yaml и deploy.yaml ниже. Любые предложения, как решить, поскольку я жестко закодировал внутренний сервер как .host = "www.varnish-cache.org" с портом: "80". Мое требование на выполнение curl -IL Я должен получить ответ с кэшированными значениями не так, как описано выше (непосредственно с внутреннего сервера) ..
varni sh .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 }}