This stack is derived from Ubuntu 24.04 LTS (Noble Numbat)

Dependencies

• GNU make
• Docker >= 20.10.9

Creating a rootfs tarball

To create a rootfs for the cflinuxfs5 stack:

make

This will create the cflinuxfs5.tar.gz file, which is the artifact used as the rootfs in Cloud Foundry deployments.

Creating a BOSH release from the rootfs tarball

To start, clone the repository containing the cflinuxfs5-rootfs BOSH release:

git clone git@github.com:cloudfoundry/cflinuxfs5-release.git
cd cflinuxfs5-release

Replace the old cflinuxfs5 tarball with the new tarball created above:

rm -f config/blobs.yml
mkdir -p blobs/rootfs
cp <path-to-new-tarball>/cflinuxfs5.tar.gz blobs/rootfs/cflinuxfs5-new.tar.gz

Create a dev release and upload it to your BOSH deployment:

bosh create release --force --with-tarball --name cflinuxfs5-rootfs
bosh upload release <generated-dev-release-tar-file>

If your Diego deployment manifest has version: latest indicated for the cflinuxfs5 release, then redeploying Diego will enable this new rootfs.

Release pipeline

The generation and release of a new rootfs happens on the cflinuxfs5 CI pipeline.