Intel Container Experience Kits Setup Scripts

Intel Container Experience Kits Setup Scripts provide a simplified mechanism for installing and configuring Kubernetes clusters on Intel Architecture using Ansible.

The software provided here is for reference only and not intended for production environments.

Quickstart guide

1. Initialize git submodules to download Kubespray code.

   git submodule update --init

2. Decide which configuration profile you want to use and optionally export environmental variable. (> NOTE: It will be used only to ease execution of the steps listed below.)

   • For Kubernetes Basic Infrastructure deployment:

     export PROFILE=basic

   • For Kubernetes Access Edge Infrastructure deployment:

     export PROFILE=access

   • For Kubernetes Regional Data Center Infrastructure deployment:

     export PROFILE=regional_dc

   • For Kubernetes Remote Forwarding Platform Infrastructure deployment:

     export PROFILE=remote_fp

   • For Kubernetes Infrastructure On Customer Premises deployment:

     export PROFILE=on_prem

   • For Kubernetes Full NFV Infrastructure deployment:

     export PROFILE=full_nfv

3. Install dependencies

   pip3 install -r profiles/requirements.txt

4. Generate example host_vars, group_vars and inventory for BMRA profiles.

   make bmra-profiles

   NOTE: You can provide the optional profile argument to automatically copy files needed for deployment. Then, you can skip both the 4th and the 6th steps.

   make bmra-profiles profile=$PROFILE

5. Copy example inventory file to the project root dir.

   cp examples/${PROFILE}/inventory.ini .

6. Update inventory file with your environment details.

   NOTE: at this stage you can inspect your target environment by running:

   ansible -i inventory.ini -m setup all > all_system_facts.txt

   In all_system_facts.txt file you will find details about your hardware, operating system and network interfaces, which will help to properly configure Ansible variables in the next steps.

7. Copy group_vars and host_vars directories to the project root dir.

   cp -r examples/${PROFILE}/group_vars examples/${PROFILE}/host_vars .

8. Update group and host vars to match your desired configuration. Refer to this section for more details.

   NOTE: Please pay special attention to the http_proxy, https_proxy and additional_no_proxy vars if you're behind proxy.

9. RECOMMENDED: Apply bug fix patch for Kubespray submodule (Required for RHEL 8+).

   ansible-playbook -i inventory.ini playbooks/k8s/patch_kubespray.yml

10. Execute ansible-playbook.

    ansible-playbook -i inventory.ini playbooks/${PROFILE}.yml

Configuration

Refer to the documentation linked below to see configuration details for selected capabilities and deployment profiles.

• SRIOV Network Device Plugin and SRIOV CNI plugin

Prerequisites and Requirements

• Python present on the target servers depending on the target distribution. Python 3 is highly recommended, but Python 2 is still supported for CentOS 7.
• Ansible 2.9.20 installed on the Ansible host machine (the one you run these playbooks from).
• python-pip3 installed on the Ansible machine.
• python-netaddr installed on the Ansible machine.
• SSH keys copied to all Kubernetes cluster nodes (ssh-copy-id <user>@<host> command can be used for that).
• Internet access on all target servers is mandatory. Proxy is supported.
• At least 8GB of RAM on the target servers/VMs for minimal number of functions (some Docker image builds are memory-hungry and may cause OOM kills of Docker registry - observed with 4GB of RAM), more if you plan to run heavy workloads such as NFV applications.
• For the RHEL-like OSes SELinux must be configured prior to the BMRA deployment and required SELinux-related packages should be installed. BMRA itself is keeping initial SELinux state but SELinux-related packages might be installed during k8s cluster deployment as a dependency, for Docker engine e.g., causing OS boot failure or other inconsistencies if SELinux is not configured properly. Preferable SELinux state is permissive. For more details, please, refer to the respective OS documentation.