Initializing the Kubernetes cluster

Master node from scratch

• Install Kubernetes on Ubuntu 18.04. Assuming version 1.14.2 is pulled, check how to fix version.

> sudo snap install kubeadm --classic
> sudo snap install kubelet --classic
> sudo snap install kubectl --classic
> sudo apt install rand faketime

• Create cluster configuration scripts.

> cd init/templates
# edit cluster information in the following config file
> nano make_init_config.sh
> touch /home/kubernetes/.rnd
> ./make_init_config.sh

• Spin up the master node.

• Flannel daemonset (node communication)

• nVidia daemonset

• Update kubelet configuration for master node

Authentication systems

DEX with LDAP

TODO: outdated, switched to containerized DEX. Check what still needs to be done.

Set up according to this tutorial with customized install scripts in kubernetes/init/dex/

1. Create secrets for TLS connections, use certs for ccu.uni-konstanz.de
   1. Modify ca-cm.yml to contain correct ca.
   2. Run upload_ccu_tls.sh
2. Spin up login application service.
   1. Modify loginapp-cm.yml: server config
   2. Modify loginapp-ing-srv.yml: service data, mapping of ports to outside world
   3. Modify loginapp-deploy.yml: ID secret for TLS
   4. Run start-login-service.sh
3. Spin up dex
   1. Modify dex-cm.yml: server data and LDAP configuration
   2. Modify dex-ing-srv.yml: service data, mapping of ports to outside world
   3. Modify dex-deploy.yml: ID secret for TLS
   4. Run start-dex-service.sh