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Jetlag

Tooling to install clusters for testing via an on-prem Assisted Installer in the Red Hat Scale Lab, Red Hat Performance Lab, and IBMcloud (Bare Metal).

Two types of clusters can be deployed:

Layout Meaning Description
MNO Multi Node OpenShift 3 control-plane nodes, X number of worker nodes
SNO Single Node OpenShift 1 OpenShift Master/Worker Node "cluster" per available hardware resource

Both cluster layouts require a bastion machine which is the first machine out of your lab "cloud" allocation. The bastion machine will host the assisted-installer service and serve as a router for clusters with a private machine network. MNO layout produces a single cluster consisting of 3 control-plane nodes and X number of worker nodes. The worker node count can also be 0 such that your multi node cluster is a compact 3 node cluster with schedulable control-plane nodes. SNO layout creates an SNO cluster per available machine after fulfilling the bastion machine requirement. Lastly, MNO cluster type 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

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

Performance Lab

Hardware MNO SNO
740xd Yes Yes
Dell r750 Yes Yes

Scale Lab

Hardware MNO SNO
Dell r660 Yes Yes
Dell r650 Yes Yes
Dell r640 Yes Yes
Dell fc640 Yes Yes
Supermicro 1029p Yes No
Supermicro 1029U Yes Yes
Supermicro 5039ms Yes Yes

IBMcloud

Hardware MNO SNO
Supermicro E5-2620 Yes Yes
Lenovo ThinkSystem SR630 Yes Yes

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

Prerequisites

Versions:

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

Update to RHEL 8.9

[root@<bastion> ~]# cat /etc/redhat-release
Red Hat Enterprise Linux release 8.2 (Ootpa)

[root@<bastion> ~]# ./update-latest-rhel-release.sh 8.9
...
[root@<bastion> ~]# dnf update -y
...
[root@<bastion> ~]# reboot
...
[root@<bastion> ~]# cat /etc/redhat-release
Red Hat Enterprise Linux release 8.9 (Ootpa)

Installing Ansible via bootstrap (requires python3-pip)

[root@<bastion> jetlag]# source bootstrap.sh
...
(.ansible) [root@<bastion> jetlag]#

Pre-reqs for Supermicro hardware:

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

Cluster Deployment Usage

We recommend that you set up Jetlag on the bastion machine and run playbooks from there. This will give faster access to the machines being configured, and it also provides an environment that can easily be shared for debugging if necessary. However you can run Jetlag playbooks from a remote host (for example, your laptop) as long as you can connect to the bastion machine in your cloud allocation.

There are three main files to configure. The inventory file is generated and can be edited for specific scenario/hardware usage. You can also manually create a "Bring Your Own Lab" inventory file.

File Description
ansible/vars/all.yml An Ansible vars file used for Red Hat performance labs (sample provided at ansible/vars/all.sample.yml)
ansible/vars/ibmcloud.yml An Ansible vars file used for IBM Cloud (sample provided at ansible/vars/ibmcloud.sample.yml)
pull_secret.txt Your OCP pull secret, download from console.redhat.com/openshift/downloads
ansible/inventory/$CLOUDNAME.local The generated inventory file (Samples provided in ansible/inventory)

Start by editing the vars

Red Hat performance labs

(.ansible) [root@<bastion> jetlag]# cp ansible/vars/all.sample.yml ansible/vars/all.yml
(.ansible) [root@<bastion> jetlag]# vi ansible/vars/all.yml

IBM Cloud

(.ansible) [root@<bastion> jetlag]# cp ansible/vars/ibmcloud.sample.yml ansible/vars/ibmcloud.yml
(.ansible) [root@<bastion> jetlag]# vi ansible/vars/ibmcloud.yml

Make sure to set/review the following vars:

Variable Meaning
lab performancelab, scalelab, or ibmcloud
lab_cloud the cloud within the lab environment for Red Hat Performance labs (Example: cloud42)
cluster_type either mno, or sno for the respective cluster layout
worker_node_count applies to mno cluster type for the desired worker count, ideal for leaving left over inventory hosts for other purposes
bastion_lab_interface set to the bastion machine's lab accessible interface
bastion_controlplane_interface set to the interface in which the bastion will be networked to the deployed ocp cluster
controlplane_lab_interface applies to mno cluster type 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)

More customization such as cluster_network and service_network are available as extra vars, check each ansible role default vars file for variable names and options.

Save your pull-secret from console.redhat.com/openshift/downloads in pull_secret.txt in the Jetlag repo base directory, for example by using the "Copy" button on the web page, and then pasting the clipboard text into a cat > pull_secret.txt command like this:

(.ansible) [root@<bastion> jetlag]# cat >pull_secret.txt
{
  "auths": {
    "quay.io": {
      "auth": "XXXXXXX",
      "email": "XXXXXXX"
    },
    "registry.connect.redhat.com": {
      "auth": "XXXXXXX",
      "email": "XXXXXXX"
    },
    "registry.redhat.io": {
      "auth": "XXXXXXX",
      "email": "XXXXXXX"
    }
  }
}

Run create-inventory playbook

(.ansible) [root@<bastion> jetlag]# ansible-playbook ansible/create-inventory.yml

Run setup-bastion playbook

(.ansible) [root@<bastion> jetlag]# ansible-playbook -i ansible/inventory/cloud99.local ansible/setup-bastion.yml

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

Multi Node OpenShift Cluster:

(.ansible) [root@<bastion> jetlag]# ansible-playbook -i ansible/inventory/cloud99.local ansible/mno-deploy.yml

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

Single Node OpenShift:

(.ansible) [root@<bastion> jetlag]# ansible-playbook -i ansible/inventory/cloud99.local ansible/sno-deploy.yml

Interact with your cluster from your bastion machine:

(.ansible) [root@<bastion> jetlag]# export KUBECONFIG=/root/mno/kubeconfig
(.ansible) [root@<bastion> jetlag]# oc get no
NAME               STATUS   ROLES                         AGE    VERSION
xxx-h02-000-r650   Ready    control-plane,master,worker   73m    v1.25.7+eab9cc9
xxx-h03-000-r650   Ready    control-plane,master,worker   103m   v1.25.7+eab9cc9
xxx-h05-000-r650   Ready    control-plane,master,worker   105m   v1.25.7+eab9cc9
(.ansible) [root@<bastion> jetlag]# cat /root/mno/kubeadmin-password
xxxxx-xxxxx-xxxxx-xxxxx

And for SNO

(.ansible) [root@<bastion> jetlag]# export KUBECONFIG=/root/sno/xxx-h02-000-r650/kubeconfig
(.ansible) [root@<bastion> jetlag]# oc get no
NAME      STATUS   ROLES                         AGE   VERSION
xxx-h02-000-r650   Ready    control-plane,master,worker   30h   v1.28.6+0fb4726
(.ansible) [root@<bastion> jetlag]# cat /root/sno/xxx-h02-000-r650/kubeadmin-password
xxxxx-xxxxx-xxxxx-xxxxx

Quickstart guides

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.