nginx

Nginx Ingress DaemonSet

In some cases, the Ingress controller will be required to be run at all the nodes in cluster. Using DaemonSet can achieve this requirement.

Default Backend

The default backend is a service of handling all url paths and hosts the nginx controller doesn't understand. Deploy the default-http-backend as follow:

$ kubectl apply -f ../../deployment/nginx/default-backend.yaml 
deployment "default-http-backend" configured
service "default-http-backend" configured

$ kubectl -n kube-system get svc
NAME                   CLUSTER-IP    EXTERNAL-IP   PORT(S)   AGE
default-http-backend   192.168.3.6   <none>        80/TCP    1h

$ kubectl -n kube-system get po
NAME                                    READY     STATUS    RESTARTS   AGE
default-http-backend-2657704409-6b47n   1/1       Running   0          1h

Ingress DaemonSet

Deploy the daemonset as follows:

$ kubectl apply -f nginx-ingress-daemonset.yaml
daemonset "nginx-ingress-lb" created

$ kubectl -n kube-system get ds
NAME               DESIRED   CURRENT   READY     NODE-SELECTOR   AGE
nginx-ingress-lb   2         2         2         <none>          21s

$ kubectl -n kube-system get po
NAME                                    READY     STATUS    RESTARTS   AGE
default-http-backend-2657704409-6b47n   1/1       Running   0          2h
nginx-ingress-lb-8381i                  1/1       Running   0          56s
nginx-ingress-lb-h54gf                  1/1       Running   0          56s