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Underground

A Cloud Platform developed and designed according to the Open Infrastructure principles.

Underground is based on the most recent and stable version of OpenStack. It can be expanded with additional resources and functionality based on need.

Why Underground?

With Underground as the basis for a true open infrastructure, you won’t have to worry about hardware or software constraints. Our Open Source Cloud Platform is a solution without lock-ins, including from the point of view of functionalities and services: each of them can be activated and deactivated easily to radically change the scope and shape of the infrastructure. This is something that can be defined as true infrastructure-as-code.

Support Matrix

Stein Train Ussuri Victoria Wallaby Xena
Ubuntu 18.04 Python 2.x Python 3.x
Ubuntu 20.04 Python 3.x Python 3.x Python 3.x Python 3.x Python 3.x
CentOS 7.x Python 2.x Python 3.x
CentOS 8.x Python 3.x Python 3.x Python 3.x
CentOS 8.x Stream Python 3.x Python 3.x

Deplyment Strategies

  • All-in-One [aio]: small customers, dipartimental server, edge, demo, testing, and development environment
  • All-in-One [aio] + Baremetal: baremetal management lifecycle
  • Hiper-Converged Infrastrure [hci]: edge, fog, or small/medium datacentre
  • Converged [converged]: Contro/Network + Compute/Storage linear scalability for medium/large datacentre
  • Distributed [distributed]: large deployments, Big Data, and High Performance Computing

Prerequisites for All-in-One

Software

  • Ansible 2.9.x
  • Git

Hardware (including VM)

Minimal Baremetal
  • CPU: 2x 1.8GHz x84_64
  • RAM: 16GB
  • Storage OS: 100GB HDD
  • Network: 1gbit nic dedicated for baremetal
Recommended
  • CPU: 4x 3.0GHz x84_64
  • RAM: 32GB
  • Storage OS: 128GB SSD
  • Storage Data: 1x 250GB SSD

Installation

Prerequisites

RedHat/CentOS 7

Using distro packages:

yum -y install epel-repo
yum -y install ansible git

Using Python pip:

yum -y install python-pip
pip install 'ansible<2.10'

RedHat/CentOS 8

Using distro packages:

dnf -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
dnf -y install --enablerepo epel-playground ansible git

Using Python pip:

dnf -y install python3-pip git
python3 -m pip install 'ansible<2.10'

Debian/Ubuntu

Using distro packages:

apt install -y ansible git

Using Python pip:

apt install -y python3-pip git
python3 -m pip install 'ansible<2.10'

Install

git clone https://git.cloud.e4.lan/e4/underground
python3 -m pip install underground

Or directly from Git:

python3 -m pip install git+https://git.cloud.e4.lan/e4/underground

If you want to install Underground only for development purpose:

git clone https://git.cloud.e4.lan/e4/underground
cd underground

The Underground command is available using the local path syntax tools/underground inside the code directory or using the absolute path (e.g. /path/to/underground/code/tools/underground).

Deployment

The deployment sequence follow these steps:

  1. Initialization: underground init [-f] <DEPLOYMENT>
  2. Bootstrapping: underground bootstrap <RELEASE> [-m <MODULE(S)>] [-n <NIC>]
  3. Configuration: underground configure
  4. Deployment: underground deploy
  5. Post Deployment: underground post-deploy

Initialization

underground init [-f] <DEPLOYMENT>

e.g.

# underground init aio

Underground initialization is needed to create common configuration directory and the initial inventory hosts structure:

  • Directories:
    • /etc/underground
    • /etc/underground/host_vars
  • Files:
    • /etc/underground/hosts

Also, the initialization step, execute all low level operation needed befor bootstrap (e.g. packages installation).

The -f (or --force) command line option will overwrite /etc/underground/hosts if exists.

The inventory file /etc/underground/hosts needs to be adapted with specified nodes an all scenario except All-on-One when the deployment machine is the target machine too.

Bootstrapping

underground bootstrap <RELEASE> [-m <MODULE(S)>] [-n <NIC>]

e.g.

# underground bootstrap victoria -m base,ceph -n enp0s8

After edited the inventory file /etc/underground/hosts, it is possible to procede with bootstrapping the nodes.

Atcions executed in this step are:

  • Check if node OS is suitable for selected role
  • Install required distribution packages (rpm and deb)
  • Install correct Python version related to the selected OpenStack release
  • Install required Python packages (PyPI)
  • Install Kolla, Kolla Ansible, and Ceph Ansible

As a results of execution, some files under the Underground config directory is created:

  • Write boostrap paramenters into /etc/underground/globals.yml

    ---
underground_deployment: aio
underground_enable_modules:
- base
- ceph
underground_internal_address: 127.0.0.2
underground_internal_interface: lo
underground_openstack_release: victoria
underground_public_interface: enp0s8
underground_replica_interface: enp0s8
underground_storage_interface: enp0s8

This file can be safely modified by users. Subsequent invocation of booststrap will not overwrite values inside this file.

Configuring

underground configure

e.g.

# underground configure

Configuration step will populate multiple files inside /etc/underground directory:

  • /etc/underground/globals.d/
    • ceph.yml
    • kolla.yml
    • passwords.yml
  • /etc/underground/host_vars:

Deploying Underground Baremetal

Pre-Req

  • 1 dedicated nic + subnet for baremetal
  • no ip addresss on baremetal nic
  • 2 ip address for baremetal nic

Example

# underground init aio
# underground bootstrap victoria -m baremetal -n ens3 -e underground_baremetal_interface=ens5 -e underground_baremetal_network='100.127.102.200/24' -e underground_internal_address='100.127.102.201/24' -e underground_external_interface=ens4 -e underground_public_address='100.127.103.100'
# underground build -t dib -e underground_baremetal_image="ipa"
# underground configure
# underground deploy
# underground post-deploy

Parameters

  • underground_baremetal_interface: "interface where the bridge and neutron is created"
  • underground_baremetal_network: "ip/prefix of ironic inspector and neutron baremetal network"
  • underground_internal_address: "internal VIP address on keepalived"
  • underground_external_interface: "neutron vxlan interface"
  • underground_public_address: "external VIP address on keepalived
  • underground_baremetal_image: "image to build witch DIB, default to IPA"

Bootstrap Example Vars File

# underground bootstrap victoria -m baremetal -n ens3 -e "@/usr/local/src/underground/contrib/vars/underground_baremetal_vars.yml"

Set Autodiscovery , default=enabled

# underground-autodiscovery disable

Image Deployed

  • Minimum set for image to be deployed
# underground build -t dib -e underground_baremetal_image="underground" -e baremetal_image_upload="true"
  • underground elements: "ubuntu focal gpt efi lvm"
  • underground disk layout: "green/blue rootfs , docker"