Base
Hardened build
minimal ports, security patches applied at build time
Ubuntu 20.04 LTS LVM
Azure
Operating Systems
Ubuntu Server 20.04 LTS with an LVM disk layout, so you can grow the root filesystem online and reshape storage without repartitioning.
Overview
Ubuntu Server 20.04 LTS LVM is the 20.04 long term support Ubuntu release cut with an LVM root layout: the root filesystem lives on a logical volume (ubuntu-vg/ubuntu-lv, the standard Ubuntu Server LVM naming) inside a volume group rather than on a fixed raw partition. There is no application layered on top: the operating system is the product. The LVM layout means you can extend the root volume onto a larger disk while the system is running, add new volumes for data or applications, and reshape storage with standard LVM tooling. Be aware before choosing it: Ubuntu 20.04 reached the end of its standard security maintenance on 31 May 2025, so it suits estates standardised on 20.04 that need the LVM layout, not new deployments starting fresh.
Why the cloudimg image
cloudimg builds the LVM layout from its own hardened Ubuntu Server 20.04 LTS base, patches it to the last packages published in the free Ubuntu archive for 20.04 as of capture, verifies the LVM layout is genuinely in place with a proven online grow, and hardens it before it ships. There is no default login: SSH access is by the key you supply at launch, password authentication is off and the root account is locked. AppArmor ships enforcing, machine identity and SSH host keys are regenerated uniquely on every instance, and the image is backed by a paired deploy guide and 24/7 support. The image contains no ESM package and no Ubuntu Pro attachment; Canonical's paid Ubuntu Pro subscription can be attached by you for continued security coverage.
Common uses
- Estates standardised on Ubuntu 20.04 that need LVM managed disks and an online root grow
- Servers where storage will be reshaped later, adding volumes for data, logs or applications
- Controlled migrations that need a reproducible 20.04 base while workloads move to a newer LTS
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