文章目录
- ①. Service服务发现ClusterIP方式
- ②. Service服务暴露NodePort方式
- ③. Ingress的概述以安装
- ④. Ingress的域名访问
- ⑤. Ingress的路径重写
- ⑥. Ingress的限流操作
①. Service服务发现ClusterIP方式
- ①. Service:Pod的服务发现与负载均衡
- ②. 有三个pods实例的nginx,进入到容器内部,对默认页面进行如下操作
cd /usr/share/nginx
echo "hello 111"->index.html
echo "hello 222"->index.html
echo "hello 333"->index.html
- ③. 隐藏pod的端口和ip,暴露serviceip和端口,在集群内部进行访问
# 和下面命令等价kubectl expose deploy my-dep-01 --port=8000 --target-port=80 --type=ClusterIP
[root@k8smaster ~]# kubectl expose deployment my-dep-01 --port=8000 --target-port=80
[root@k8smaster ~]# kubectl get service
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 7d15h
my-dep-01 ClusterIP 10.96.170.26 <none> 8000/TCP 2m12s
[root@k8smaster ~]# curl 10.96.170.26:8000
hello 111-
[root@k8smaster ~]# curl 10.96.170.26:8000
hello 222-
[root@k8smaster ~]# curl 10.96.170.26:8000
hello 111-
[root@k8smaster ~]# curl 10.96.170.26:8000
hello 333-
[root@k8smaster ~]# curl 10.96.170.26:8000
- ④. 如果说这个时候我们创部署一个前端的项目,前端项目可以通过域名的方式进行访问
curl my-dep-01.default.svc:8000 (注意不能在浏览器中访问,也不能在集群不进入容器的方式进行访问) - ⑤. 通过yaml文件配置Service
app: my-dep-01通过如下命令查询到的
[root@k8smaster ~]# kubectl get pod --show-labels
NAME READY STATUS RESTARTS AGE LABELS
my-dep-01-686cfb7bf-b2vbl 1/1 Running 0 55m k8s-app=my-dep-01,pod-template-hash=686cfb7bf
my-dep-01-686cfb7bf-f9wdc 1/1 Running 0 55m k8s-app=my-dep-01,pod-template-hash=686cfb7bf
my-dep-01-686cfb7bf-jdhqh 1/1 Running 0 55m k8s-app=my-dep-01,pod-template-hash=686cfb7bfapiVersion: v1
kind: Service
metadata:
labels:
app: my-dep
name: my-dep
spec:
selector:
app: my-dep-01
ports:
- port: 8000
protocol: TCP
targetPort: 80②. Service服务暴露NodePort方式
- ①. NodePort命令行的方式
kubectl expose deployment my-dep --port=8000 --target-port=80 --type=NodePort
NodePort范围在 30000-32767之间
[root@k8smaster ~]# kubectl get deploy
NAME READY UP-TO-DATE AVAILABLE AGE
my-dep-01 3/3 3 3 21m
[root@k8smaster ~]# kubectl expose deploy my-dep-01 --port=8000 --target-port=80 --type=NodePort
service/my-dep-01 exposed
[root@k8smaster ~]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 12d
my-dep-01 NodePort 10.96.235.249 <none> 8000:30267/TCP 5s
[root@k8smaster ~]# curl 10.96.235.249:8000
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
html { color-scheme: light dark; }
body { width: 35em; margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif; }
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
[root@k8smaster ~]#
- ②. yaml文件的方式
apiVersion: v1
kind: Service
metadata:
labels:
app: my-dep-01
name: my-dep-01
spec:
ports:
- port: 8000
protocol: TCP
targetPort: 80
selector:
app: my-dep-01
type: NodePort③. Ingress的概述以安装
- ①. Ingress是Service的统一网关入口,Service又是Pod统一的入口
- ②. 安装Ingress
kubect apply -f ingreess.yaml
apiVersion: v1
kind: Namespace
metadata:
name: ingress-nginx
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
---
# Source: ingress-nginx/templates/controller-serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx
namespace: ingress-nginx
automountServiceAccountToken: true
---
# Source: ingress-nginx/templates/controller-configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller
namespace: ingress-nginx
data:
---
# Source: ingress-nginx/templates/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
name: ingress-nginx
rules:
- apiGroups:
- ''
resources:
- configmaps
- endpoints
- nodes
- pods
- secrets
verbs:
- list
- watch
- apiGroups:
- ''
resources:
- nodes
verbs:
- get
- apiGroups:
- ''
resources:
- services
verbs:
- get
- list
- watch
- apiGroups:
- extensions
- networking.k8s.io # k8s 1.14+
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- ''
resources:
- events
verbs:
- create
- patch
- apiGroups:
- extensions
- networking.k8s.io # k8s 1.14+
resources:
- ingresses/status
verbs:
- update
- apiGroups:
- networking.k8s.io # k8s 1.14+
resources:
- ingressclasses
verbs:
- get
- list
- watch
---
# Source: ingress-nginx/templates/clusterrolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
name: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: ingress-nginx
subjects:
- kind: ServiceAccount
name: ingress-nginx
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/controller-role.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx
namespace: ingress-nginx
rules:
- apiGroups:
- ''
resources:
- namespaces
verbs:
- get
- apiGroups:
- ''
resources:
- configmaps
- pods
- secrets
- endpoints
verbs:
- get
- list
- watch
- apiGroups:
- ''
resources:
- services
verbs:
- get
- list
- watch
- apiGroups:
- extensions
- networking.k8s.io # k8s 1.14+
resources:
- ingresses
verbs:
- get
- list
- watch
- apiGroups:
- extensions
- networking.k8s.io # k8s 1.14+
resources:
- ingresses/status
verbs:
- update
- apiGroups:
- networking.k8s.io # k8s 1.14+
resources:
- ingressclasses
verbs:
- get
- list
- watch
- apiGroups:
- ''
resources:
- configmaps
resourceNames:
- ingress-controller-leader-nginx
verbs:
- get
- update
- apiGroups:
- ''
resources:
- configmaps
verbs:
- create
- apiGroups:
- ''
resources:
- events
verbs:
- create
- patch
---
# Source: ingress-nginx/templates/controller-rolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx
namespace: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: ingress-nginx
subjects:
- kind: ServiceAccount
name: ingress-nginx
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/controller-service-webhook.yaml
apiVersion: v1
kind: Service
metadata:
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller-admission
namespace: ingress-nginx
spec:
type: ClusterIP
ports:
- name: https-webhook
port: 443
targetPort: webhook
selector:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
---
# Source: ingress-nginx/templates/controller-service.yaml
apiVersion: v1
kind: Service
metadata:
annotations:
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller
namespace: ingress-nginx
spec:
type: NodePort
ports:
- name: http
port: 80
protocol: TCP
targetPort: http
- name: https
port: 443
protocol: TCP
targetPort: https
selector:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
---
# Source: ingress-nginx/templates/controller-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: controller
name: ingress-nginx-controller
namespace: ingress-nginx
spec:
selector:
matchLabels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
revisionHistoryLimit: 10
minReadySeconds: 0
template:
metadata:
labels:
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/component: controller
spec:
dnsPolicy: ClusterFirst
containers:
- name: controller
image: registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/ingress-nginx-controller:v0.46.0
imagePullPolicy: IfNotPresent
lifecycle:
preStop:
exec:
command:
- /wait-shutdown
args:
- /nginx-ingress-controller
- --election-id=ingress-controller-leader
- --ingress-class=nginx
- --configmap=$(POD_NAMESPACE)/ingress-nginx-controller
- --validating-webhook=:8443
- --validating-webhook-certificate=/usr/local/certificates/cert
- --validating-webhook-key=/usr/local/certificates/key
securityContext:
capabilities:
drop:
- ALL
add:
- NET_BIND_SERVICE
runAsUser: 101
allowPrivilegeEscalation: true
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: LD_PRELOAD
value: /usr/local/lib/libmimalloc.so
livenessProbe:
failureThreshold: 5
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
readinessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10254
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
ports:
- name: http
containerPort: 80
protocol: TCP
- name: https
containerPort: 443
protocol: TCP
- name: webhook
containerPort: 8443
protocol: TCP
volumeMounts:
- name: webhook-cert
mountPath: /usr/local/certificates/
readOnly: true
resources:
requests:
cpu: 100m
memory: 90Mi
nodeSelector:
kubernetes.io/os: linux
serviceAccountName: ingress-nginx
terminationGracePeriodSeconds: 300
volumes:
- name: webhook-cert
secret:
secretName: ingress-nginx-admission
---
# Source: ingress-nginx/templates/admission-webhooks/validating-webhook.yaml
# before changing this value, check the required kubernetes version
# https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/#prerequisites
apiVersion: admissionregistration.k8s.io/v1
kind: ValidatingWebhookConfiguration
metadata:
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
name: ingress-nginx-admission
webhooks:
- name: validate.nginx.ingress.kubernetes.io
matchPolicy: Equivalent
rules:
- apiGroups:
- networking.k8s.io
apiVersions:
- v1beta1
operations:
- CREATE
- UPDATE
resources:
- ingresses
failurePolicy: Fail
sideEffects: None
admissionReviewVersions:
- v1
- v1beta1
clientConfig:
service:
namespace: ingress-nginx
name: ingress-nginx-controller-admission
path: /networking/v1beta1/ingresses
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: ingress-nginx-admission
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/clusterrole.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: ingress-nginx-admission
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
rules:
- apiGroups:
- admissionregistration.k8s.io
resources:
- validatingwebhookconfigurations
verbs:
- get
- update
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/clusterrolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: ingress-nginx-admission
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: ingress-nginx-admission
subjects:
- kind: ServiceAccount
name: ingress-nginx-admission
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/role.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: ingress-nginx-admission
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
namespace: ingress-nginx
rules:
- apiGroups:
- ''
resources:
- secrets
verbs:
- get
- create
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/rolebinding.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: ingress-nginx-admission
annotations:
helm.sh/hook: pre-install,pre-upgrade,post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
namespace: ingress-nginx
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: Role
name: ingress-nginx-admission
subjects:
- kind: ServiceAccount
name: ingress-nginx-admission
namespace: ingress-nginx
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/job-createSecret.yaml
apiVersion: batch/v1
kind: Job
metadata:
name: ingress-nginx-admission-create
annotations:
helm.sh/hook: pre-install,pre-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
namespace: ingress-nginx
spec:
template:
metadata:
name: ingress-nginx-admission-create
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
spec:
containers:
- name: create
image: docker.io/jettech/kube-webhook-certgen:v1.5.1
imagePullPolicy: IfNotPresent
args:
- create
- --host=ingress-nginx-controller-admission,ingress-nginx-controller-admission.$(POD_NAMESPACE).svc
- --namespace=$(POD_NAMESPACE)
- --secret-name=ingress-nginx-admission
env:
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
restartPolicy: OnFailure
serviceAccountName: ingress-nginx-admission
securityContext:
runAsNonRoot: true
runAsUser: 2000
---
# Source: ingress-nginx/templates/admission-webhooks/job-patch/job-patchWebhook.yaml
apiVersion: batch/v1
kind: Job
metadata:
name: ingress-nginx-admission-patch
annotations:
helm.sh/hook: post-install,post-upgrade
helm.sh/hook-delete-policy: before-hook-creation,hook-succeeded
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
namespace: ingress-nginx
spec:
template:
metadata:
name: ingress-nginx-admission-patch
labels:
helm.sh/chart: ingress-nginx-3.33.0
app.kubernetes.io/name: ingress-nginx
app.kubernetes.io/instance: ingress-nginx
app.kubernetes.io/version: 0.47.0
app.kubernetes.io/managed-by: Helm
app.kubernetes.io/component: admission-webhook
spec:
containers:
- name: patch
image: docker.io/jettech/kube-webhook-certgen:v1.5.1
imagePullPolicy: IfNotPresent
args:
- patch
- --webhook-name=ingress-nginx-admission
- --namespace=$(POD_NAMESPACE)
- --patch-mutating=false
- --secret-name=ingress-nginx-admission
- --patch-failure-policy=Fail
env:
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
restartPolicy: OnFailure
serviceAccountName: ingress-nginx-admission
securityContext:
runAsNonRoot: true
runAsUser: 2000
④. Ingress的域名访问
- ①. 在master主节点进行如下的命令操作
[root@k8smaster ~]# kubectl apply -f ingress-rule.yaml
ingress.networking.k8s.io/ingress-host-bar created
[root@k8smaster ~]# kubectl get ingress
NAME CLASS HOSTS ADDRESS PORTS AGE
ingress-host-bar nginx hello.xiaozhi.com,demo.xiaozhi.com 80 5s
[root@k8smaster ~]# kubectl get service -A
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
default hello-server ClusterIP 10.96.179.231 <none> 8000/TCP 8m35s
default kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 12d
default my-dep-01 NodePort 10.96.235.249 <none> 8000:30267/TCP 44m
default nginx-demo ClusterIP 10.96.221.252 <none> 8000/TCP 8m35s
ingress-nginx ingress-nginx-controller NodePort 10.96.183.241 <none> 80:32128/TCP,443:31148/TCP 26m
ingress-nginx ingress-nginx-controller-admission ClusterIP 10.96.31.69 <none> 443/TCP 26m
kube-system kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 12d
kubernetes-dashboard dashboard-metrics-scraper ClusterIP 10.96.219.52 <none> 8000/TCP 12d
kubernetes-dashboard kubernetes-dashboard NodePort 10.96.235.195 <none> 443:32476/TCP 12d
[root@k8smaster ~]#apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-host-bar
spec:
ingressClassName: nginx
rules:
- host: "hello.xiaozhi.com"
http:
paths:
- pathType: Prefix
path: "/"
backend:
service:
name: hello-server
port:
number: 8000
- host: "demo.xiaozhi.com"
http:
paths:
- pathType: Prefix
path: "/" # 把请求会转给下面的服务,下面的服务一定要能处理这个路径,不能处理就是404
backend:
service:
name: nginx-demo ## java,比如使用路径重写,去掉前缀nginx
port:
number: 8000- ②. 配置本地的hosts
- ③. 页面访问
⑤. Ingress的路径重写
- ①. 使用命令重新启动ingress
[root@k8smaster ~]# kubectl apply -f ingress-rule.yaml
[root@k8smaster ~]# kubectl get ing
NAME CLASS HOSTS ADDRESS PORTS AGE
ingress-host-bar nginx hello.xiaozhi.com,demo.xiaozhi.com 192.168.68.145 80 12m
[root@k8smaster ~]# kubectl get service -A
NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
default hello-server ClusterIP 10.96.179.231 <none> 8000/TCP 142m
default kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 12d
default my-dep-01 NodePort 10.96.235.249 <none> 8000:30267/TCP 178m
default nginx-demo ClusterIP 10.96.221.252 <none> 8000/TCP 142m
ingress-nginx ingress-nginx-controller NodePort 10.96.183.241 <none> 80:32128/TCP,443:31148/TCP 160m
ingress-nginx ingress-nginx-controller-admission ClusterIP 10.96.31.69 <none> 443/TCP 160m
kube-system kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 12d
kubernetes-dashboard dashboard-metrics-scraper ClusterIP 10.96.219.52 <none> 8000/TCP 12d
kubernetes-dashboard kubernetes-dashboard NodePort 10.96.235.195 <none> 443:32476/TCP 12d
[root@k8smaster ~]#apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$2
name: ingress-host-bar
spec:
ingressClassName: nginx
rules:
- host: "hello.atguigu.com"
http:
paths:
- pathType: Prefix
path: "/"
backend:
service:
name: hello-server
port:
number: 8000
- host: "demo.atguigu.com"
http:
paths:
- pathType: Prefix
path: "/nginx(/|$)(.*)" # 把请求会转给下面的服务,下面的服务一定要能处理这个路径,不能处理就是404
backend:
service:
name: nginx-demo ## java,比如使用路径重写,去掉前缀nginx
port:
number: 8000
⑥. Ingress的限流操作
- ①. 在master进行如下的命令操作
[root@k8smaster ~]# kubectl apply -f ingress-limit-rule.yaml
ingress.networking.k8s.io/ingress-limit-rate created
[root@k8smaster ~]# kubectl get ingress
NAME CLASS HOSTS ADDRESS PORTS AGE
ingress-host-bar nginx hello.xiaozhi.com,demo.xiaozhi.com 192.168.68.145 80 21m
ingress-limit-rate nginx haha.xiaozhi.com 80 8s
[root@k8smaster ~]# kubectl get svc -A |grep ingress
ingress-nginx ingress-nginx-controller NodePort 10.96.183.241 <none> 80:32128/TCP,443:31148/TCP 169m
ingress-nginx ingress-nginx-controller-admission ClusterIP 10.96.31.69 <none> 443/TCP 169mapiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-limit-rate
annotations:
nginx.ingress.kubernetes.io/limit-rps: "1"
spec:
ingressClassName: nginx
rules:
- host: "haha.xiaozhi.com"
http:
paths:
- pathType: Exact
path: "/"
backend:
service:
name: nginx-demo
port:
number: 8000
- ②. 上面的yaml文件是精准匹配,流量限制1s一个请求进来,如果这个时候我们大量的刷新浏览器,就会出现503
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