使用yaml来实现ingress-nginx

创建一个ingress-nginx

[root@k8s-master ingress]# cat ingress-nginx.yaml

apiVersion: v1

kind: Namespace

metadata:

name: ingress-nginx

---

kind: ConfigMap

apiVersion: v1

metadata:

name: nginx-configuration

namespace: ingress-nginx

labels:

app.kubernetes.io/name: ingress-nginx

app.kubernetes.io/part-of: ingress-nginx

---

apiVersion: v1

kind: ServiceAccount

metadata:

name: nginx-ingress-serviceaccount

namespace: ingress-nginx

labels:

app.kubernetes.io/name: ingress-nginx

app.kubernetes.io/part-of: ingress-nginx

---

apiVersion: rbac.authorization.k8s.io/v1beta1

kind: ClusterRole

metadata:

name: nginx-ingress-clusterrole

labels:

app.kubernetes.io/name: ingress-nginx

app.kubernetes.io/part-of: 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"

resources:

- ingresses

verbs:

- get

- list

- watch

- apiGroups:

- ""

resources:

- events

verbs:

- create

- patch

- apiGroups:

- "extensions"

resources:

- ingresses/status

verbs:

- update

---

apiVersion: rbac.authorization.k8s.io/v1beta1

kind: Role

metadata:

name: nginx-ingress-role

namespace: ingress-nginx

labels:

app.kubernetes.io/name: ingress-nginx

app.kubernetes.io/part-of: ingress-nginx

rules:

- apiGroups:

- ""

resources:

- configmaps

- pods

- secrets

- namespaces

verbs:

- get

- apiGroups:

- ""

resources:

- configmaps

resourceNames:

# Defaults to "<election-id>-<ingress-class>"

# Here: "<ingress-controller-leader>-<nginx>"

# This has to be adapted if you change either parameter

# when launching the nginx-ingress-controller.

- "ingress-controller-leader-nginx"

verbs:

- get

- update

- apiGroups:

- ""

resources:

- configmaps

verbs:

- create

- apiGroups:

- ""

resources:

- endpoints

verbs:

- get

---

apiVersion: rbac.authorization.k8s.io/v1beta1

kind: RoleBinding

metadata:

name: nginx-ingress-role-nisa-binding

namespace: ingress-nginx

labels:

app.kubernetes.io/name: ingress-nginx

app.kubernetes.io/part-of: ingress-nginx

roleRef:

apiGroup: rbac.authorization.k8s.io

kind: Role

name: nginx-ingress-role

subjects:

- kind: ServiceAccount

name: nginx-ingress-serviceaccount

namespace: ingress-nginx

---

apiVersion: rbac.authorization.k8s.io/v1beta1

kind: ClusterRoleBinding

metadata:

name: nginx-ingress-clusterrole-nisa-binding

labels:

app.kubernetes.io/name: ingress-nginx

app.kubernetes.io/part-of: ingress-nginx

roleRef:

apiGroup: rbac.authorization.k8s.io

kind: ClusterRole

name: nginx-ingress-clusterrole

subjects:

- kind: ServiceAccount

name: nginx-ingress-serviceaccount

namespace: ingress-nginx

---

apiVersion: extensions/v1beta1

kind: Deployment

metadata:

name: nginx-ingress-controller

namespace: ingress-nginx

labels:

app.kubernetes.io/name: ingress-nginx

app.kubernetes.io/part-of: ingress-nginx

spec:

replicas: 1

selector:

matchLabels:

app.kubernetes.io/name: ingress-nginx

app.kubernetes.io/part-of: ingress-nginx

template:

metadata:

labels:

app.kubernetes.io/name: ingress-nginx

app.kubernetes.io/part-of: ingress-nginx

annotations:

prometheus.io/port: "10254"

prometheus.io/scrape: "true"

spec:

serviceAccountName: nginx-ingress-serviceaccount

hostNetwork: true

containers:

- name: nginx-ingress-controller

image: lizhenliang/nginx-ingress-controller:0.20.0

args:

- /nginx-ingress-controller

- --configmap=$(POD_NAMESPACE)/nginx-configuration

- --publish-service=$(POD_NAMESPACE)/ingress-nginx

- --annotations-prefix=nginx.ingress.kubernetes.io

securityContext:

capabilities:

drop:

- ALL

add:

- NET_BIND_SERVICE

# www-data -> 33

runAsUser: 33

env:

- name: POD_NAME

valueFrom:

fieldRef:

fieldPath: metadata.name

- name: POD_NAMESPACE

valueFrom:

fieldRef:

fieldPath: metadata.namespace

ports:

- name: http

containerPort: 80

- name: https

containerPort: 443

livenessProbe:

failureThreshold: 3

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

periodSeconds: 10

successThreshold: 1

timeoutSeconds: 1

---

这里有的执行完毕之后，可以ingress出现off状态，这里需要在你的kube-proxy配置文件添加--masquerade-all=true \
这里我是自己搭建的二进制k8s集群是这么添加的，其他的环境这里不做太多阐述

node节点都需要重启并添加参数

[root@k8s-node1 ~]# vim /opt/kubernetes/cfg/kube-proxy
KUBE_PROXY_OPTS="--logtostderr=true \
--v=4 \
--hostname-override=192.168.30.22 \
--cluster-cidr=10.0.0.0/24 \
--masquerade-all=true \
--kubeconfig=/opt/kubernetes/cfg/kube-proxy.kubeconfig"

重启kube-proxy和kube-apiserver就可以了，查看ingress

[root@k8s-master ~]# kubectl get pod -n ingress-nginx

NAME                                       READY   STATUS    RESTARTS   AGE

nginx-ingress-controller-bbb66b76b-2jszm   1/1     Running   0          48m