jetlag

Tooling to install clusters for testing via an on-prem Assisted Installer in the Red Hat Scale/Alias Lab and bare metal servers in IBMcloud.

Three separate layouts of clusters can be deployed:

• BM - Bare Metal - 3 control-plane nodes, X number of worker nodes
• RWN - Remote Worker Node - 3 control-plane/worker nodes, X number of remote worker nodes
• SNO - Single Node OpenShift - 1 OpenShift Master/Worker Node "cluster" per available hardware resource

Each cluster layout requires a bastion machine which is the first machine out of your lab "cloud" allocation. The bastion machine will host the assisted-installer and serve as a router for clusters with a private machine network. BM and RWN layouts produce a single cluster consisting of 3 control-plane nodes and X number of worker or remote worker nodes. SNO layout creates an SNO cluster per available machine after fulfilling the bastion machine requirement. Lastly, BM/RWN cluster types will allocate any unused machines under the hv ansible group which stands for hypervisor nodes. The hv nodes can host vms for additional clusters that can be deployed from the hub cluster. (For ACM/MCE testing)

Table of Contents

• Tested Labs/Hardware
• Prerequisites
• Cluster Deployment Usage
• Quickstart guides
• Tips and Troubleshooting
• Disconnected API/Console Access
• Jetlag Hypervisors

Tested Labs/Hardware

The listed hardware has been used for cluster deployments successfully. Potentially other hardware has been tested but just not documented here.

Alias Lab

Scale Lab

IBMcloud

Prerequisites

Versions:

• Ansible 4.10+ (core >= 2.11.12) (on machine running jetlag playbooks)
• ibmcloud cli => 2.0.1 (IBMcloud environments)
• RHEL 8.6 / Rocky 8.6 (Bastion)
• podman 3 / 4 (Bastion)

Update to RHEL 8.6

[root@f31-h05-000-r640]# ./update-latest-rhel-release.sh 8.6
[root@f31-h05-000-r640]# dnf update -y
[root@f31-h05-000-r640]# reboot

Installing Ansible via bootstrap (requires python3-pip)

[root@f31-h05-000-r640 jetlag]# source bootstrap.sh
...
(.ansible) [root@f31-h05-000-r640 jetlag]#

Installing Ansible via python3

$ python3 -m venv .ansible       # Create a virtualenv if one does not already exist
$ source .ansible/bin/activate   # Activate the virtual environment
$ pip3 install --upgrade pip     # Ensure pip is updated
$ pip3 install ansible netaddr   # Install the lastest version of ansible and netaddr library
$ ansible-galaxy collection install ansible.utils

For guidance on how to order hardware on IBMcloud, see order-hardware-ibmcloud.md in docs directory.

Pre-reqs for Supermicro hardware:

• SMCIPMITool downloaded to jetlag repo, renamed to smcipmitool.tar.gz, and placed under ansible/

Cluster Deployment Usage

There are three main files to configure and one is generated but might have to be edited for specific desired scenario/hardware usage:

• ansible/vars/all.yml - An ansible vars file (Sample provided ansible/vars/all.sample.yml)
• pull_secret.txt - Your OCP pull secret, download from console.redhat.com
• ansible/inventory/$CLOUDNAME.local - The generated inventory file (Samples provided in ansible/inventory)

Start by editing the vars

cp ansible/vars/all.sample.yml ansible/vars/all.yml
vi ansible/vars/all.yml

Make sure to set/review the following vars:

• lab - either alias or scalelab
• lab_cloud - the cloud within the lab environment (Example: cloud42)
• cluster_type - either bm, rwn, or sno for the respective cluster layout
• worker_node_count - applies to bm and rwn cluster types for the desired worker count, ideal for leaving left over inventory hosts for other purposes
• public_vlan - applies to sno cluster_types, set to be true only for public routable vlan deployment
• controlplane_lab_interface - applies to bm and rwn cluster types and should map to the nodes interface in which the lab provides dhcp to and also required for public routable vlan based sno deployment(to disable this interface)
• controlplane_pub_network_cidr and controlplane_pub_network_gateway - only required for public routable vlan based sno deployment to input lab public routable vlan network and gateway
• rwn_lab_interface - applies only to rwn cluster type and should map to the nodes interface in which the lab provides dhcp to
• More customization like cluster_network, service_network, rwn_vlan and rwn_networks can be supported as extra vars, check default files for variable name.

Set your pull-secret in pull_secret.txt in repo base directory. Example:

[user@fedora jetlag]$ cat pull_secret.txt
{
  "auths": {
...

Run create-inventory playbook

ansible-playbook ansible/create-inventory.yml

Run setup-bastion playbook

ansible-playbook -i ansible/inventory/cloud42.local ansible/setup-bastion.yml

Run deploy for either bm/rwn/sno playbook with inventory created by create-inventory playbook

Bare Metal Cluster:

ansible-playbook -i ansible/inventory/cloud42.local ansible/bm-deploy.yml

See troubleshooting.md in docs directory for BM install related issues

Remote Worker Node Cluster:

ansible-playbook -i ansible/inventory/cloud42.local ansible/rwn-deploy.yml

Single Node OpenShift:

ansible-playbook -i ansible/inventory/cloud42.local ansible/sno-deploy.yml

Quickstart guides

• Deploy a Bare Metal cluster via jetlag quickstart guide
• Deploy a Bare Metal cluster on IBMcloud via jetlag quickstart
• Deploy Single Node OpenShift (SNO) clusters via jetlag quickstart guide
• Deploy Single Node OpenShift (SNO) clusters on IBMcloud via jetlag quickstart

Tips and Troubleshooting

See tips-and-vars.md in docs directory.

See troubleshooting.md in docs directory.

Disconnected API/Console Access

See disconnected-ipv6-cluster-access.md in docs directory.

Jetlag Hypervisors

See hypervisors.md in docs directory.