OpenStack is not a single app — it’s a collection of services:

Nova → compute / VMs
Neutron → networking
Cinder → block storage
Swift → object storage
Keystone → authentication
Glance → VM images
Horizon → web UI

Best homelab learning path

Install:

MicroStack

Good because:

Runs on one decent server
Quick install
Gives real OpenStack APIs
Less pain than full enterprise deployment

Use this to learn:

Create networks
Upload VM images
Launch instances
Floating IPs
Security groups
Volumes
Snapshots

Learning projects to do (practical)

These are what actually teach OpenStack:

Project 1 — Build a private cloud

Do:

Create tenant/project
Create private network
Create subnet
Create router
Launch VM
Assign floating IP
SSH into VM

This teaches Nova + Neutron.

Project 2 — Persistent storage

Do:

Create Cinder volume
Attach to VM
Snapshot volume
Restore from snapshot

This teaches storage lifecycle.

Project 3 — Multi-tenant isolation

Create:

Tenant A
Tenant B

Verify:

Networks isolated
Security groups separate
Quotas enforced

This teaches cloud governance.

Project 4 — Failure injection

Break things:

Stop Neutron
Fill disk
Break RabbitMQ
Kill database service

Then debug:

Logs
API failures
scheduler failures

This teaches operational troubleshooting (valuable for SRE/observability roles).

Project 5 — Observe OpenStack

Since you’re focused on observability engineering, add:

Prometheus
Grafana
OpenTelemetry
Loki

Monitor:

Nova API latency
RabbitMQ queues
MySQL/Galera health
Neutron agents
Hypervisor CPU
Scheduler failures
VM spawn times

Learn the architecture (important)

Understand these dependencies:

User/API
|
Keystone (auth)
|
Nova API
|
RabbitMQ ---- Database
|
Scheduler
|
Compute Node (KVM/libvirt)

Neutron -> OVS/Linux bridge
Cinder -> backend storage
Glance -> image repo

If you understand this flow, troubleshooting becomes much easier.

Command-line skills to practice

Use:

openstack server list
openstack network list
openstack image list
openstack volume list
openstack hypervisor list
openstack quota show

And inspect services underneath:

virsh
ovs-vsctl
ip netns
systemctl
database queries
RabbitMQ queues

MicroStack on Proxmox VM Objectives

Strong observability/SRE focus:

Start with MicroStack
Learn core OpenStack operations
Move to Kolla-Ansible
Instrument it with Prometheus/Grafana
Practice failure debugging

That gives you OpenStack + observability + troubleshooting, which is much more valuable than just learning the dashboard UI.

Terraform Provisioning: MicroStack VM

main.tf

#########################################
# MicroStack VM Definition
#########################################

resource "proxmox_vm_qemu" "microstack" {
  vmid        = var.microstack_vmid
  name        = "microstack"
  target_node = var.proxmox_node

  clone      = var.vm_template
  full_clone = true

  #########################################
  # VM Type
  #########################################

  os_type = "cloud-init"
  bios    = "ovmf"
  machine = "q35"
  scsihw  = "virtio-scsi-pci"

  #########################################
  # CPU
  #########################################

  cpu {
    cores   = 10
    sockets = 1
    type    = "host"
    numa    = false
  }

  #########################################
  # Memory
  #########################################

  memory  = 49152
  balloon = 0

  #########################################
  # Disks
  #########################################

  disks {
    ide {
      ide2 {
        cloudinit {
          storage = "local-lvm"
        }
      }
    }

    scsi {
      #########################################
      # Ubuntu OS Disk
      #########################################
      scsi0 {
        disk {
          storage  = "zfs-local"
          size     = "120G"
          cache    = "writeback"
          iothread = true
          discard  = true
        }
      }

      #########################################
      # OpenStack / MicroCeph Disk
      #########################################
      scsi1 {
        disk {
          storage  = "zfs-local"
          size     = "750G"
          cache    = "writeback"
          iothread = true
          discard  = true
        }
      }
    }
  }

  #########################################
  # Network
  #########################################

  network {
    id       = 0
    model    = "virtio"
    bridge   = var.vm_bridge
    firewall = false
  }

  #########################################
  # Cloud-init Networking
  #########################################

  ipconfig0 = "ip=${var.microstack_ip}/24,gw=${var.vm_gateway}"

  nameserver = var.dns_server

  #########################################
  # Cloud-init User
  #########################################

  ciuser     = var.vm_user
  cipassword = var.vm_password
  sshkeys    = file(var.ssh_public_key_path)

  #########################################
  # Boot / Runtime
  #########################################

  onboot = true
  agent  = 1

  #########################################
  # Proxmox Features
  #########################################

  kvm    = true

  #########################################
  # Boot Order
  #########################################

  boot = "order=scsi0"

  #########################################
  # Tags
  #########################################

  tags = "openstack,microstack,lab"

  lifecycle {
    ignore_changes = [tags]
  }
}

variables.tf

#########################################
# Proxmox API
#########################################

variable "pm_api_url" {
  description = "Proxmox API URL"
  type        = string
}

variable "pm_api_token_id" {
  description = "Proxmox API Token ID (user@realm!token)"
  type        = string
}

variable "pm_api_token_secret" {
  description = "Proxmox API Token Secret"
  type        = string
  sensitive   = true
}

#########################################
# Proxmox Node / Template
#########################################

variable "proxmox_node" {
  description = "Target Proxmox node"
  type        = string
}

variable "vm_template" {
  description = "Cloud-init template name"
  type        = string
}

#########################################
# VM Access
#########################################

variable "vm_user" {
  description = "Cloud-init username"
  type        = string
}

variable "vm_password" {
  description = "Cloud-init password"
  type        = string
  sensitive   = true
}

#########################################
# Network
#########################################

variable "vm_bridge" {
  description = "Proxmox network bridge"
  type        = string
}

variable "vm_gateway" {
  description = "Default gateway"
  type        = string
}

variable "dns_server" {
  description = "DNS server"
  type        = string
  default     = "1.1.1.1"
}

#########################################
# SSH
#########################################

variable "ssh_public_key_path" {
  description = "Path to SSH public key"
  type        = string

  validation {
    condition     = can(file(var.ssh_public_key_path))
    error_message = "ssh_public_key_path must point to a valid file."
  }
}

variable "ssh_private_key_path" {
  description = "Path to SSH private key (for Ansible)"
  type        = string

  validation {
    condition     = can(file(var.ssh_private_key_path))
    error_message = "ssh_private_key_path must point to a valid file."
  }
}

#########################################
# MicroStack VM Variables
#########################################

variable "microstack_ip" {
  description = "Static IP for MicroStack VM"
  type        = string
}

variable "microstack_vmid" {
  description = "VM ID for MicroStack"
  type        = number
  default     = 200
}

terraform.tfvars

#########################################
# Proxmox API
#########################################

pm_api_url          = "https://<proxmox-ve-node>:8006/api2/json"
pm_api_token_id     = "root@pam!terraform"
pm_api_token_secret = "<api-token>"

proxmox_node   = "<proxmox-node-name>"
vm_template    = "ubuntu-24-template"

vm_bridge      = "vmbr0"
vm_gateway     = "<gw>"
dns_server     = "<dns>"

vm_user        = "<user>"
vm_password    = "<passwd>"

ssh_public_key_path  = "id_rsa.pub"
ssh_private_key_path = "id_rsa"

#########################################
# MicroStack-specific
#########################################

microstack_ip   = "<ms_ip>"
microstack_vmid = 200

MicroStack VM Provisioning & Preparation Checklist

Step	Phase	Action	Command / Setting	Expected Result	Notes
1	Proxmox	Enable nested virtualization on host	`cat /sys/module/kvm_intel/parameters/nested`	`Y`	Already confirmed
2	Proxmox	Check host CPU topology	`lscpu`	24 CPUs / 2 sockets / 12 cores	Confirms sizing
3	Terraform	Create MicroStack VM	`terraform apply`	VM provisioned	Ubuntu VM created
4	VM Config	CPU topology	`10 vCPU`, `type=host`	CPU passthrough	Avoid overcommitting
5	VM Config	RAM	`48GB fixed`	Memory available	Ballooning OFF
6	VM Config	Disk 1	`120GB`	Ubuntu OS disk	Root filesystem
7	VM Config	Disk 2	`750GB`	Data disk	For MicroCeph/OpenStack
8	VM Config	BIOS	`OVMF`	UEFI boot	Preferred
9	VM Config	Machine	`q35`	Modern chipset	Required for better virtualization
10	VM Config	NIC	`VirtIO`	Fast paravirtualized network	Firewall OFF initially
11	VM Config	KVM	Enabled	Nested virtualization available	Required

After First Boot into Ubuntu VM

Step	Phase	Action	Command	Expected Result	Notes
12	Validate CPU	Check CPU topology	`lscpu`	10 CPUs visible	Confirm guest topology
13	Validate Memory	Check RAM	`free -h`	~47GB visible	Good
14	Validate Disk	Check disks	`lsblk`	`sda` + `sdb`	Two-disk layout
15	Validate KVM	Install checker	`sudo apt install cpu-checker -y`	Package installed
16	Validate KVM	Verify acceleration	`kvm-ok`	`KVM acceleration can be used`	Critical check
17	Validate OS	Confirm Ubuntu version	`lsb_release -a`	Ubuntu 24.04 LTS	Recommended version
18	Validate Network	Check interfaces	`ip a`	NIC visible
19	Validate Internet	Ping test	`ping -c 3 8.8.8.8`	Replies	Needed for package installs
20	Validate Internet	Repo reachability	`ping -c 3 archive.ubuntu.com`	Replies	Confirms package access

System Preparation Before OpenStack Install

Step	Phase	Action	Command	Expected Result	Notes
21	Swap	Create swap file	`sudo fallocate -l 8G /swapfile`	File created	Prevents memory pressure issues
22	Swap	Secure permissions	`sudo chmod 600 /swapfile`	Permission set	Required
23	Swap	Format swap	`sudo mkswap /swapfile`	Swap signature created
24	Swap	Enable swap	`sudo swapon /swapfile`	Swap active
25	Swap	Persist across reboot	`echo '/swapfile none swap sw 0 0' \| sudo tee -a /etc/fstab`	Added to fstab	Permanent
26	Verify Swap	Confirm swap active	`free -h`	`Swap: 8Gi`	Final check

Package Preparation Before OpenStack Install

Step	Phase	Action	Command	Expected Result	Notes
27	Update package metadata	Refresh package index	`sudo apt update`	Repo metadata refreshed
28	Upgrade system	Install all updates	`sudo apt upgrade -y`	182 packages upgraded	Important before snaps
29	General tools	Install utilities	`sudo apt install curl jq net-tools cpu-checker -y`	Packages installed	Useful tooling
30	Reboot	Reboot after updates	`sudo reboot`	Clean system restart	End point of this checklist

Validation Commands (after reboot, before OpenStack install)

Step	Action	Command	Expected Result
31	Verify CPU	`lscpu`	10 vCPU
32	Verify RAM	`free -h`	~47GB + swap
33	Verify disks	`lsblk`	`sda` + `sdb`
34	Verify KVM	`kvm-ok`	KVM acceleration available
35	Verify network	`ping -c 3 archive.ubuntu.com`	Internet reachable

OpenStack vs MicroStack — Components, Architecture, and Commands

Area	OpenStack	MicroStack
What it is	Full enterprise cloud platform	Lightweight packaged OpenStack distribution
Maintainer	OpenInfra Foundation	Canonical
Deployment Style	Multi-node enterprise architecture	Single-node or small-cluster deployment
Complexity	High	Low-to-medium
Installation	Manual / Ansible / Helm / Kolla / Juju	Snap-based installer
Best For	Enterprises, telcos, service providers	Labs, edge, dev/test, PoC
Operations Model	Deep infrastructure engineering	Simplified operations
HA Design	Full HA clusters	Limited/simple HA
Networking	Fully customizable SDN	Opinionated/simple defaults
Storage	Enterprise Ceph/SAN integrations	Simpler integrated storage
Kubernetes Integration	Magnum/Kolla/OpenStack-Helm	External K8s or lightweight integration
Scale	Thousands of nodes	Small-to-medium deployments

Architectural Difference

Full OpenStack

Controllers
 ├── Keystone
 ├── Nova API
 ├── Neutron API
 ├── Glance
 ├── RabbitMQ
 ├── MariaDB
 └── Horizon

Compute Nodes
 ├── nova-compute
 ├── KVM/libvirt
 └── OVS/OVN

Storage Nodes
 └── Ceph/Swift

MicroStack

Single Host or Small Cluster
 ├── Keystone
 ├── Nova
 ├── Neutron
 ├── Glance
 ├── OVN
 ├── RabbitMQ
 ├── MySQL
 ├── Horizon
 └── KVM/libvirt

MicroStack packages most services together in a simplified deployment model.

Core Components Comparison

Function	OpenStack Service	MicroStack Equivalent	Notes
Identity	Keystone	Keystone	Same service
Compute	Nova	Nova	Same
Networking	Neutron	Neutron + OVN	Simplified networking
Images	Glance	Glance	Same
Dashboard	Horizon	Horizon	Same
Block Storage	Cinder	Cinder	Usually simpler backend
Object Storage	Swift	Optional/not typical	Often omitted
Telemetry	Ceilometer/Gnocchi	Usually absent	Reduced complexity
Orchestration	Heat	Optional	Not always enabled
Bare Metal	Ironic	Usually absent	Labs rarely need it
Kubernetes	Magnum	Rarely deployed	External K8s preferred
Database	MariaDB Galera	MySQL/MariaDB	Packaged internally
Messaging	RabbitMQ	RabbitMQ	Internalized
SDN	OVN/OVS/ML2	OVN default	Opinionated defaults

Installation Comparison

Traditional OpenStack Deployment

Usually uses:

Kolla-Ansible
OpenStack-Ansible
Juju
TripleO (legacy)
Helm/Kubernetes

Example:

kolla-ansible deploy

Requires:

Networking design
HA planning
Storage architecture
DB clustering
Message queue clustering

MicroStack Installation

Very simple:

sudo snap install openstack

Bootstrap:

sunbeam cluster bootstrap

Add node:

sunbeam cluster join

Command Comparison

1. Authentication

Task	OpenStack	MicroStack
Load credentials	`source admin-openrc`	`sunbeam openrc > admin-openrc`
Authenticate	`openstack token issue`	`openstack token issue`

Example:

source admin-openrc
openstack token issue

2. VM Management

Task	OpenStack	MicroStack
List VMs	`openstack server list`	Same
Create VM	`openstack server create`	Same
Delete VM	`openstack server delete`	Same

Example:

openstack server list

3. Images

Task	OpenStack	MicroStack
List images	`openstack image list`	Same
Upload image	`openstack image create`	Same

Example:

openstack image list

4. Networking

Task	OpenStack	MicroStack
List networks	`openstack network list`	Same
List routers	`openstack router list`	Same
Floating IPs	`openstack floating ip list`	Same

Example:

openstack network list

5. Storage

Task	OpenStack	MicroStack
List volumes	`openstack volume list`	Same
Create volume	`openstack volume create`	Same

Example:

openstack volume create --size 20 my-volume

6. Cluster Management

This is where MicroStack differs significantly.

Task	Enterprise OpenStack	MicroStack
Cluster bootstrap	External tooling	`sunbeam cluster bootstrap`
Add nodes	Ansible/Juju/manual	`sunbeam cluster add`
Generate join token	Manual automation	`sunbeam cluster join-token`
Inspect cluster	Multiple tools	`sunbeam cluster list`

Example:

sunbeam cluster list

7. Service Management

OpenStack

Usually:

systemctl status nova-api
systemctl status neutron-server

Or containerized:

docker ps
podman ps

MicroStack

Snap-managed:

sudo snap services openstack

Restart services:

sudo snap restart openstack

8. Logs

OpenStack

journalctl -u nova-api
journalctl -u neutron-server

Or:

/var/log/nova/
/var/log/neutron/

MicroStack

sudo journalctl -u snap.openstack.*

Or:

sudo snap logs openstack

9. Networking Backends

Feature	OpenStack	MicroStack
OVS	Supported	Supported
OVN	Supported	Default
SR-IOV	Common	Limited
VLAN/VXLAN	Fully configurable	Simpler
DPDK	Enterprise use	Rare

10. Storage Backends

Backend	OpenStack	MicroStack
Ceph	Full enterprise integration	Optional/simpler
LVM	Supported	Common
NFS	Supported	Possible
Swift	Common large-scale	Rare

Operational Complexity Comparison

Area	OpenStack	MicroStack
Deployment	Complex	Easy
Upgrades	Careful orchestration	Simpler
HA	Advanced clustering	Basic
Scaling	Massive	Moderate
Debugging	Distributed systems expertise	Easier
Resource Usage	High	Lower
Learning Curve	Steep	Gentle

Best Use Cases

OpenStack

Best for:

Telco NFV
Enterprise private cloud
Sovereign cloud
HPC
Large-scale virtualization
VMware replacement

MicroStack

Best for:

Home labs
CI/CD labs
Edge computing
OpenStack learning
Development/testing
Lightweight private cloud

Operational Philosophy

OpenStack	MicroStack
“Build a cloud platform”	“Run OpenStack quickly”
Deep customization	Opinionated defaults
Infrastructure engineering heavy	Developer/operator friendly
Large-scale production	Small/medium environments

Practical Mental Model

MicroStack = Opinionated lightweight OpenStack distribution

OpenStack = Full enterprise cloud framework

MicroStack gives you:

The SAME APIs
The SAME core services
The SAME CLI

…but packaged and automated for simpler deployment and operations.

That makes it excellent for:

Learning OpenStack
Home labs
Edge infrastructure
Lightweight production clouds
Rapid PoCs and demos

Best homelab learning path

Learning projects to do (practical)

Project 1 — Build a private cloud

Project 2 — Persistent storage

Project 3 — Multi-tenant isolation

Project 4 — Failure injection

Project 5 — Observe OpenStack

Learn the architecture (important)

Command-line skills to practice

MicroStack on Proxmox VM Objectives

Terraform Provisioning: MicroStack VM

MicroStack VM Provisioning & Preparation Checklist

After First Boot into Ubuntu VM

System Preparation Before OpenStack Install

Package Preparation Before OpenStack Install

Validation Commands (after reboot, before OpenStack install)

OpenStack vs MicroStack — Components, Architecture, and Commands

Architectural Difference

Full OpenStack

MicroStack

Core Components Comparison

Installation Comparison

Traditional OpenStack Deployment

MicroStack Installation

Command Comparison

1. Authentication

2. VM Management

3. Images

4. Networking

5. Storage

6. Cluster Management

7. Service Management

OpenStack

MicroStack

8. Logs

OpenStack

MicroStack

9. Networking Backends

10. Storage Backends

Operational Complexity Comparison

Best Use Cases

OpenStack

MicroStack

Operational Philosophy

Practical Mental Model

Bristol Linux Unix Systems Automation Security