5779fa8525
This change: - adds a note regarding an error when building focal ubuntu-minimal images on operating systems with older versions of debootstrap - adds a reference to where the DIB_RELEASE variable definition can be found Closes-Bug: #1941831 Change-Id: Ibc1e04dba0562c4f4909a8cb8af041d9b8ac45c4
ubuntu-minimal
The ubuntu-minimal element uses debootstrap for
generating a minimal image. In contrast the ubuntu element
uses the cloud-image as the initial base.
Note
You will need to install a working debootstrap for diskimage-builder. The version you install may not support all Debian and Ubuntu releases that you want to bootstrap. Consider using the zuul/nodepool-builder docker image instead as maximum compatibility is attempted there.
By default this element creates the latest LTS release. The exact
setting can be found in the ubuntu-common
element's environment.d directory in the variable
DIB_RELEASE. If a different release of Ubuntu should be
created, the variable DIB_RELEASE can be set
appropriately.
Note that this element installs systemd-sysv as the init
system for 18.04+.
Environment Variables
- DIB_UBUNTU_KERNEL:
-
- Required
-
No
- Default
-
linux-image-generic - Description
-
Specifies the kernel meta package to install in the image.
- Example
-
DIB_UBUNTU_KERNEL=linux-image-kvm - Options
-
linux-image-generic,linux-image-kvm,linux-image-virtual - Notes
-
The element must know about the package, otherwise it will select the default.
- DIB_UBUNTU_MIRROR_DISTS:
-
- Required
-
No
- Default
-
updates,security,backports - Description
-
Allow to manage 'dists' repos
- Example
-
DIB_UBUNTU_MIRROR_DISTS=updates,security - Notes
-
For some deployment, is may be required to disable backportetc packages integration.