Generic Kubernetes

Kubernetes Cluster requirements

OpenServerless installs in any Kubernetes cluster which satisfies the following requirements:

• cluster-admin access

• at least 3 worker nodes with 4GB of memory each

• support for block storage configured as default storage class

• support for LoadBalancer services

• the nginx ingress already installed

• the cert manager already installed

Once you have such a cluster, you need to retrieve the IP address of the Load Balancer associated with the Nginx Ingress. In the default installation, it is installed in the namespace nginx-ingress and it is called ingress-nginx-controller.

In the default installation you can read the IP address with the following command:

kubectl -n ingress-nginx get svc ingress-nginx-controller

If you have installed it in some other namespace or with another name, change the command accordingly.

The result should be something like this:

NAME                       TYPE           CLUSTER-IP   EXTERNAL-IP    PORT(S)                      AGE
ingress-nginx-controller   LoadBalancer   10.0.9.99    20.62.156.19   80:30898/TCP,443:31451/TCP   4d1h

Take note of the value under EXTERNAL-IP as you need it in the next step of installation, configuring DNS.