# AlmaLinux OS Generic Cloud (Cloud-init) image

The Generic Cloud image is a general purpose virtual machine image that contains the Cloud-init (opens new window) package. During boot, cloud-init will take configuration options from cloud metadata and initialize a system accordingly. This may include network configuration, user's SSH key pair installation, attaching storage devices, etc.

# Download images

The AlmaLinux OS Generic Cloud image is available from our mirrors (opens new window) and from the main AlmaLinux OS repositories:

AlmaLinux 8	x86_64	aarch64	ppc64le	s390x
AlmaLinux 9	x86_64	aarch64	ppc64le	s390x

# Verify AlmaLinux 8 images

# Import the AlmaLinux OS PGP public key

In order to verify a downloaded image you need to import the AlmaLinux OS PGP public key first.

TIP

If you are using an AlmaLinux OS-powered system, you may skip the command below because you already have the key stored in the /etc/pki/rpm-gpg/RPM-GPG-KEY-AlmaLinux file. Run the following command instead to import the key:

gpg --import /etc/pki/rpm-gpg/RPM-GPG-KEY-AlmaLinux

$ curl -O -s https://repo.almalinux.org/almalinux/RPM-GPG-KEY-AlmaLinux

Print the key fingerprint:

$ gpg --with-subkey-fingerprints RPM-GPG-KEY-AlmaLinux
gpg: WARNING: no command supplied.  Trying to guess what you mean ...
pub   rsa4096 2021-01-12 [C] [expires: 2024-01-12]
      5E9B8F5617B5066CE92057C3488FCF7C3ABB34F8
uid           AlmaLinux <packager@almalinux.org>
sub   rsa3072 2021-01-12 [S] [expires: 2024-01-12]

The fingerprint is 5E9B8F5617B5066CE92057C3488FCF7C3ABB34F8. If you see a different fingerprint, it means you downloaded a compromised file. Please, let us know a mirror from which you downloaded the file, remove the file and retry the download from another mirror.

Next you need to import the key:

$ gpg --import RPM-GPG-KEY-AlmaLinux
gpg: key 488FCF7C3ABB34F8: public key "AlmaLinux <packager@almalinux.org>" imported
gpg: Total number processed: 1
gpg:               imported: 1

# Download and verify the image

Download checksum file and its signature first:

$ curl -O -s https://repo.almalinux.org/almalinux/8/cloud/x86_64/images/CHECKSUM
$ curl -O -s https://repo.almalinux.org/almalinux/8/cloud/x86_64/images/CHECKSUM.asc

Verify the checksum file signature:

$ gpg --verify CHECKSUM.asc CHECKSUM
gpg: Signature made Sat 12 Nov 00:13:38 CET
gpg:                using RSA key E53CF5EF91CEB0AD1812ECB851D6647EC21AD6EA
gpg: Good signature from "AlmaLinux <packager@almalinux.org>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 5E9B 8F56 17B5 066C E920  57C3 488F CF7C 3ABB 34F8
     Subkey fingerprint: E53C F5EF 91CE B0AD 1812  ECB8 51D6 647E C21A D6EA

Make sure that you see the Good signature from "AlmaLinux <packager@almalinux.org>" message in the output.

Download the latest image version:

$ curl -O -s https://repo.almalinux.org/almalinux/8/cloud/x86_64/images/AlmaLinux-8-GenericCloud-latest.x86_64.qcow2

and verify its checksum:

$ sha256sum -c CHECKSUM 2>&1 | grep OK
AlmaLinux-8-GenericCloud-latest.x86_64.qcow2: OK

If the output is different, you should download the image again. Trying another mirror may be a good idea.

# Verify AlmaLinux 9 images