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Red Hat OpenShift installation using the assisted installer

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Assisted Installer for Red Hat OpenShift

This example provides the steps to deploy a single node bare metal Red Hat OpenShift to test the Virtualization capabilities.

Requirements

The hardware requirements are:

  • 4 cores (+ the cores required to run your workloads)
  • 16 GB (+ the RAM required to run your workloads)
  • one disk of 120GB for RHCOS installation
  • one disk of 50GB+ for Red Hat OpenShift Virtualization

The infrastructure requirements:

  • a static IP address or reserved in a DHCP
  • A or CNAME record for api.... pointing to the IP axdress
  • A or CNAME record for api-int.... pointing to the IP axdress
  • A or CNAME record for *.apps.... pointing to the IP axdress

Recover the pull secret for the Red Hat Container Registries:

  • The pullSecret is linked to your customer account and can be restrieved here.

In this example, our DNS parameters are:

  • -> pocvirt1
  • -> test
  • -> org
  • -> int
  • or pocvirt1.test.org.int

Tooling

OCP CLIs

Grab the OC CLI:

curl -k https://mirror.openshift.com/pub/openshift-v4/clients/ocp/latest/openshift-client-linux.tar.gz -o oc.tar.gz

Grab the OC installer:

curl -k https://mirror.openshift.com/pub/openshift-v4/clients/ocp/latest/openshift-install-linux.tar.gz -o openshift-install-linux.tar.gz

Decompress the archives:

tar xfv oc.tar.gz
tar xfv openshift-install-linux.tar.gz

Deploy the binaries in /usr/local/bin:

sudo install kubectl /usr/local/bin/
sudo install oc /usr/local/bin/
sudo install openshift-install /usr/local/bin/

Full disconnected deployment

When deploying Red Hat OpenShift, images will be fetched on container registeries. If a disconnected environment is required, the followings are required:

  • A or CNAME record for registry... pointing to the IP where the registry will be hosted.
  • Those images needs to be mirrored locally using oc mirror.

In this example, our DNS parameters are:

  • registry.test.org.int

Grab the OC mirror:

curl -k https://mirror.openshift.com/pub/openshift-v4/x86_64/clients/ocp/latest/oc-mirror.tar.gz -o oc-mirror.tar.gz

Grab the mirror registry:

curl -k https://developers.redhat.com/content-gateway/file/pub/openshift-v4/clients/mirror-registry/1.3.10/mirror-registry.tar.gz -o mirror-registry.tar.gz

Decompress the archive:

tar xfv oc-mirror.tar.gz
tar xfv mirror-registry.tar.gz

Deploy the binaries in /usr/local/bin:

sudo install oc-mirror /usr/local/bin/

Create the registry directory and change ownership to current user:

sudo mkdir /opt/ocp-registry
sudo chown -R rovandep:rovandep /opt/ocp-registry

Start the registry service installation:

./mirror-registry install --quayHostname registry.test.org.int --quayRoot /opt/ocp-registry --initUser admin --initPassword redhat123

Expected output:


   __   __
  /  \ /  \     ______   _    _     __   __   __
 / /\ / /\ \   /  __  \ | |  | |   /  \  \ \ / /
/ /  / /  \ \  | |  | | | |  | |  / /\ \  \   /
\ \  \ \  / /  | |__| | | |__| | / ____ \  | |
 \ \/ \ \/ /   \_  ___/  \____/ /_/    \_\ |_|
  \__/ \__/      \ \__
                  \___\ by Red Hat
 Build, Store, and Distribute your Containers

INFO[2024-05-19 12:20:33] Install has begun                            
INFO[2024-05-19 12:20:33] Found execution environment at /home/rovandep/Downloads/dev/redhat/execution-environment.tar 
INFO[2024-05-19 12:20:33] Loading execution environment from execution-environment.tar 
INFO[2024-05-19 12:20:34] Detected an installation to localhost        
INFO[2024-05-19 12:20:34] Found SSH key at /home/rovandep/.ssh/quay_installer 
INFO[2024-05-19 12:20:34] Attempting to set SELinux rules on /home/rovandep/.ssh/quay_installer 
INFO[2024-05-19 12:20:34] Found image archive at /home/rovandep/Downloads/dev/redhat/image-archive.tar 
INFO[2024-05-19 12:20:34] Detected an installation to localhost        
INFO[2024-05-19 12:20:34] Unpacking image archive from /home/rovandep/Downloads/dev/redhat/image-archive.tar 
INFO[2024-05-19 12:20:37] Loading pause image archive from pause.tar   
INFO[2024-05-19 12:20:38] Loading redis image archive from redis.tar   
INFO[2024-05-19 12:20:38] Loading postgres image archive from postgres.tar 
INFO[2024-05-19 12:20:39] Loading Quay image archive from quay.tar     
INFO[2024-05-19 12:20:43] Attempting to set SELinux rules on image archive 
INFO[2024-05-19 12:20:43] Running install playbook. This may take some time. To see playbook output run the installer with -v (verbose) flag. 
INFO[2024-05-19 12:20:43] Detected an installation to localhost        

PLAY [Install Mirror Appliance] **********************************************************************

TASK [Gathering Facts] *******************************************************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Expand variables] ***********************************************************
included: /runner/project/roles/mirror_appliance/tasks/expand-vars.yaml for rovandep@spectre

TASK [mirror_appliance : Expand pg_storage] **********************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Expand quay_root] ***********************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Expand quay_storage] ********************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Set expanded variables] *****************************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Install Dependencies] *******************************************************
included: /runner/project/roles/mirror_appliance/tasks/install-deps.yaml for rovandep@spectre

TASK [mirror_appliance : Create user service directory] **********************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Set SELinux Rules] **********************************************************
included: /runner/project/roles/mirror_appliance/tasks/set-selinux-rules.yaml for rovandep@spectre

TASK [mirror_appliance : Set container_manage_cgroup flag on and keep it persistent across reboots] ***
skipping: [rovandep@spectre]

TASK [mirror_appliance : Install Quay Pod Service] ***************************************************
included: /runner/project/roles/mirror_appliance/tasks/install-pod-service.yaml for rovandep@spectre

TASK [mirror_appliance : Copy Quay Pod systemd service file] *****************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Check if pod pause image is loaded] *****************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Pull Infra image] ***********************************************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Start Quay Pod service] *****************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Autodetect Image Archive] ***************************************************
included: /runner/project/roles/mirror_appliance/tasks/autodetect-image-archive.yaml for rovandep@spectre

TASK [mirror_appliance : Checking for Image Archive] *************************************************
ok: [rovandep@spectre -> localhost]

TASK [mirror_appliance : Create install directory for image-archive.tar dest] ************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Copy Images if /runner/image-archive.tar exists] ****************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Unpack Images if /runner/image-archive.tar exists] **************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Loading Redis if redis.tar exists] ******************************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Loading Quay if quay.tar exists] ********************************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Loading Postgres if postgres.tar exists] ************************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Install Postgres Service] ***************************************************
included: /runner/project/roles/mirror_appliance/tasks/install-postgres-service.yaml for rovandep@spectre

TASK [mirror_appliance : Create necessary directory for Postgres persistent data] ********************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Set permissions on local storage directory] *********************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Copy Postgres systemd service file] *****************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Check if Postgres image is loaded] ******************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Pull Postgres image] ********************************************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Create Postgres Storage named volume] ***************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Start Postgres service] *****************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Wait for pg_trgm to be installed] *******************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Install Redis Service] ******************************************************
included: /runner/project/roles/mirror_appliance/tasks/install-redis-service.yaml for rovandep@spectre

TASK [mirror_appliance : Copy Redis systemd service file] ********************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Check if Redis image is loaded] *********************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Pull Redis image] ***********************************************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Start Redis service] ********************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Install Quay Service] *******************************************************
included: /runner/project/roles/mirror_appliance/tasks/install-quay-service.yaml for rovandep@spectre

TASK [mirror_appliance : Create necessary directory for Quay local storage] **************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Set permissions on local storage directory] *********************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Create necessary directory for Quay config bundle] **************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Copy Quay config.yaml file] *************************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Check if SSL Cert exists] ***************************************************
ok: [rovandep@spectre -> localhost]

TASK [mirror_appliance : Check if SSL Key exists] ****************************************************
ok: [rovandep@spectre -> localhost]

TASK [mirror_appliance : Create necessary directory for Quay rootCA files] ***************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Create OpenSSL Config] ******************************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Create root CA key] *********************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Create root CA pem] *********************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Create ssl key] *************************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Create CSR] *****************************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Create self-signed cert] ****************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Create chain cert] **********************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Replace ssl cert with chain cert] *******************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Copy SSL certificate] *******************************************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Copy SSL key] ***************************************************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Set permissions for key] ****************************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Set permissions for cert] ***************************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Copy Quay systemd service file] *********************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Check if Quay image is loaded] **********************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Pull Quay image] ************************************************************
skipping: [rovandep@spectre]

TASK [mirror_appliance : Create Quay Storage named volume] *******************************************
ok: [rovandep@spectre]

TASK [mirror_appliance : Start Quay service] *********************************************************
changed: [rovandep@spectre]

TASK [mirror_appliance : Wait for Quay] **************************************************************
included: /runner/project/roles/mirror_appliance/tasks/wait-for-quay.yaml for rovandep@spectre

TASK [mirror_appliance : Waiting up to 3 minutes for Quay to become alive at https://registry.test.org.int:8443/health/instance] ***
FAILED - RETRYING: [rovandep@spectre]: Waiting up to 3 minutes for Quay to become alive at https://registry.test.org.int:8443/health/instance (10 retries left).
FAILED - RETRYING: [rovandep@spectre]: Waiting up to 3 minutes for Quay to become alive at https://registry.test.org.int:8443/health/instance (9 retries left).

Configure the pull secret:

cat pull-secret.json | jq . > pull-mirror.json

Generate local credentials for your mirror:

echo -n 'admin:redhat123' | base64

Expected output:

YWRtaW46cmVkaGF0MTIz

Edit your pull-mirror.json file to add your local registry;

  "auths": {
    "registry.test.org.int": {
      "auth": "YWRtaW46cmVkaGF0MTIz",
      "email": "[email protected]",
    },

MIND THE SYNTAX!

Authenticate with the Red Hat registries:

podman login registry.redhat.io
podman login registry.connect.redhat.com

Create an initial template:

oc mirror init --registry example.com/mirror/oc-mirror-metadata > imageset-config.yaml

Expected output:



ISO


Get the latest RHCOS ISO version:


openshift-install coreos print-stream-json | grep location |grep x86|grep iso



Expected similar output:


"location": "https://rhcos.mirror.openshift.com/art/storage/prod/streams/4.15-9.2/builds/415.92.202402201450-0/x86_64/rhcos-415.92.202402201450-0-live.x86_64.iso",



Grab the ISO:


curl -k https://rhcos.mirror.openshift.com/art/storage/prod/streams/4.15-9.2/builds/415.92.202402201450-0/x86_64/rhcos-415.92.202402201450-0-live.x86_64.iso -o rhcos-live.iso



Configuration files


The basic template out of the documentation provides the followings:


apiVersion: v1
baseDomain: <domain> 
compute:
- name: worker
  replicas: 0 
controlPlane:
  name: master
  replicas: 1 
metadata:
  name: <name> 
networking: 
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  machineNetwork:
  - cidr: 10.0.0.0/16 
  networkType: OVNKubernetes
  serviceNetwork:
  - 172.30.0.0/16
platform:
  none: {}
bootstrapInPlace:
  installationDisk: /dev/disk/by-id/<disk_id> 
pullSecret: '<pull_secret>' 
sshKey: |
  <ssh_key> 


A working example is:


apiVersion: v1
baseDomain: test.org.int 
compute:
- name: worker
  replicas: 0 
controlPlane:
  name: master
  replicas: 1 
metadata:
  name: pocvirt1 
networking: 
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23
  machineNetwork:
  - cidr: 10.0.0.0/16 
  networkType: OVNKubernetes
  serviceNetwork:
  - 172.30.0.0/16
platform:
  none: {}
bootstrapInPlace:
  installationDisk: /dev/disk/by-id/<disk_id> 
pullSecret: '<pull_secret>' 
sshKey: |
  <ssh_key> 


Notes:


    

  • The installationDisk parameter has to be set to your first local disk that you want to use. The second disk will be assigned to the LVM Manager to provide local storage.
    • 

  • The pullSecret is linked to your customer account and can be restrieved here.
    • 

  • The sshKey parameter is linked to the root account on the RHCOS, if access is required.
    • 

  • If you require a proxy to access the internet, this can be configured by adding the followings:
    • 



proxy:
  httpProxy: http://USERNAME:[email protected]:PORT
  httpsProxy: https://USERNAME:[email protected]:PORT
  noProxy: <WILDCARD_OF_DOMAIN>,<PROVISIONING_NETWORK/CIDR>,<BMC_ADDRESS_RANGE/CIDR>


   



      


  
      

      

        

          

            

  
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