controller with 4 replicas and nginx version 1.7.9. Wait for the replication controller to bring all 4 pods up: apiVersion: v1 kind: ReplicationController metadata: name: my-nginx spec: replicas: 4 4 template: metadata: labels: app: nginx spec: containers: - name: nginx image: nginx:1.7.9 ports: - containerPort: 80 Once the RC open the replication controller section in another browser tab. kubectl rolling-update my-nginx –image=nginx:1.9.1 You will notice in the logs that Kubernetes decided to deploy only one pod at a time

key--cert .crt Deploy an nginx-ingress controller: For more information, see https://kubernetes.github.io/ingress-nginx/deploy/#bare- metal . Create the nginx-ingress controller as a nodePort nodePort service according to the Ingress nginx documentation: $ kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/ controller-v0.46.0/deploy/static/provider/baremetal/deploy.yaml the port the nginx controller is redirecting HTTPS to: $ kubectl -n ingress-nginx get svc ingress-nginx-controller The output should be similar to the below: kubectl -n ingress-nginx get svc ingress-nginx-controller

cattle • Ve r i f y t h at t h e r ol e s e x i s t : kubectl get role default-psp-role -n ingress-nginx kubectl get role default-psp-role -n cattle-system kubectl get clusterrole restricted-clusterrole Ve r i f y t h e b i n d i n gs ar e s e t c or r e c t l y : kubectl get rolebinding -n ingress-nginx default-psp-rolebinding kubectl get rolebinding -n cattle-system default-psp-rolebinding kubectl get apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: name: default-psp-role namespace: ingress-nginx rules: - apiGroups: - extensions resourceNames: - default-psp resources: - podsecuritypolicies verbs:

17h 172.16.0.11 rke2-s1 kube-system helm-install-rke2-ingress-nginx-jghfq 0/1 Completed 11 17h 10.42.0.6 rke2-s1 rke2-ingress-nginx-controller-6sk9w 1/1 Running 0 11h 10.42.0.9 rke2-s1 kube-system rke2-ingress-nginx-controller-ng4hg 11h 10.42.2.3 rke2-a2 kube-system rke2-ingress-nginx-controller-rrrts 1/1 Running 0 11h 10.42.1.0 rke2-a1

metadata: name: ingress-nginx --- apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: name: default-psp-role namespace: ingress-nginx rules: - apiGroups: io/v1 kind: RoleBinding metadata: name: default-psp-rolebinding namespace: ingress-nginx roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: default-psp-role namespace: kube-system addons_include: [] system_images: etcd: "" alpine: "" nginx_proxy: "" cert_downloader: "" kubernetes_services_sidecar: "" kubedns: "" dnsmasq: ""

metadata: name: ingress-nginx --- apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: name: default-psp-role namespace: ingress-nginx rules: - apiGroups: io/v1 kind: RoleBinding metadata: name: default-psp-rolebinding namespace: ingress-nginx roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: default-psp-role kube-system addons_include: [] system_images: Hardening Guide v2.4 12 etcd: "" alpine: "" nginx_proxy: "" cert_downloader: "" kubernetes_services_sidecar: "" kubedns: "" dnsmasq: ""

-n ingress-nginx kubectl get role default-psp-role -n cattle-system kubectl get clusterrole psp:restricted Verify the bindings are set correctly: kubectl get rolebinding -n ingress-nginx default-psp-rolebinding authorization.k8s.io/v1 kind: Role metadata: name: default-psp-role namespace: ingress-nginx rules: - apiGroups: - extensions resourceNames: - default-psp resources: io/v1 kind: RoleBinding metadata: name: default-psp-rolebinding namespace: ingress-nginx roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: default-psp-role

as it can interact poorly with certain Pod Security Policies Several system services (such as nginx-ingress ) utilize SecurityContext to switch users and assign capabilities. These exceptions to default-psp : assigned to namespaces that require additional privileged access: kube- system , ingress-nginx and cattle-system . restricted : This is the cluster default PSP and follows the best practices

suspending Not supported Not supported Application catalog 17 applications available, including NGINX, Tomcat, and Redis 13 Helm applications and 492 operator applications available by default

象，典型的访问方式是HTTP和HTTPS。Ingress功能实现依赖于Ingress Controller控制器，社区有非常多不同的Ingress Controller实现，比较常用的有Ingress Nginx Controller。 注：除了通过Ingress方式进行服务对外发布以外，Service还提供了NodePort、LoadBalance两种服务类型，针对不同的 应用场景可以选择最适合的方案。