lunchbox

Setup for a compact OpenShift demo node aka lunchbox.

One time router setup

1. Start up your GL-AR750S and plug in or connect to its wifi
2. Add the following to your ~/.ssh/config to allow OpenWRT's only (insecure) crypto:

Host 192.168.8.1
    PubkeyAcceptedAlgorithms +ssh-rsa
    HostkeyAlgorithms +ssh-rsa

3. ssh [email protected]
4. Effectively wildcard the entire demo.local domain to 192.168.8.10, which will be the SNO cluster's IP (we'll configure that later):

uci add_list dhcp.@dnsmasq[0].address="/apps.sno.demo.local/192.168.8.10"
uci add_list dhcp.@dnsmasq[0].address="/api.sno.demo.local/192.168.8.10"
uci commit dhcp
/etc/init.d/dnsmasq restart
exit

Prereqs

• The NVMe disk on the node must be empty. If not, LVM storage will not provision itself. If you can't format this disk before the install, you can do so after and let the LVM operator reconcile itself.

Get started

Determine the MAC address of the network interface you'll use for the node. If you don't know, just plug it in to the router, boot it up, and check the clients list in the router's web GUI.

Create a cluster using Assisted Installer at https://console.redhat.com

1. Cluster details:
   1. Cluster name: sno
   2. Base domain: demo.local
   3. Install SNO
   4. Hosts' network configuration: Static IP
2. Network-wide configurations:
   1. DNS: 192.168.8.1
   2. Machine network: 192.168.8.0 / 24
   3. Default gateway: 192.168.8.1
3. Host-specific configurations:
   1. MAC address: enter the MAC you determine for the node
   2. IP address: 192.168.8.10
4. Operators: install OpenShift Virt and LVM Storage
5. Host discovery: Add host
   1. Provisioning type: full image file
   2. SSH public key: add your ~/.ssh/id_rsa.pub here
   3. Generate Discovery ISO
6. Burn ISO to a flash drive, Belena Etcher is easy

Install the cluster

1. Insert the flash drive and boot from it one time (you can get a virtual console from the BMC web GUI, F11 launches the boot menu)
2. After a few minutes the node shows up in the Red Hat Console, click Next, Next, Next, and finally Install cluster
3. Wait until the installer is 100% complete, then copy the kubeadmin password displayed. Also download the kubeconfig file.
4. Navigate to https://console-openshift-console.apps.sno.demo.local, accept the certificates, and log in with kubeadmin and the password you just copied.

Smoke test

1. Check that all operators are Succeeded
2. Check that the LVM Storage operator's LVMCluster is Ready.

Bootstrap the cluster

1. Apply bootstrap/10-gitops.yaml (either from the command line or the + in the web console). Wait for Upgrade status to show Up to date.
2. Apply bootstrap/20-application.yaml

Currently manual VM stuff

Create Service and Route for cockpit, start cockpit.socket, subscription-manager register, dnf install -y container-tools git

Download and unzip https://mirror.openshift.com/pub/openshift-v4/x86_64/clients/ocp/stable/openshift-client-linux.tar.gz, move to /usr/local/bin

Clone https://gitlab.com/evanstoner/ocp-intro.git

Follow DEMO.md and then ocp-intro README.md

AAP: log in to controller as admin / shadowman and import your subscription