# diskimage Published articles for diskimage. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## CentOS8 images published in Pouta as a tech preview DevFeed: [CentOS8 images published in Pouta as a tech preview]() Original publisher: [Read original article]() Author: Unknown (noreply@blogger.com) Published: 2020-02-17T05:48:00Z Content type: release Language: en Sources: [CSC - IT Center For Science - Cloud Team]() Topics: [Cloud]() Tags: [centos](), [centos8](), [cloud-data](), [diskimage](), [glance](), [image](), [openstack](), [pouta](), [preview](), [published](), [tech](), [ubuntu]() ### AI overview CentOS 8 images are available in Pouta as a tech preview. The article notes minor upstream issues, including a resolv.conf nameserver issue, and describes temporary image modifications to address one issue. ### Source excerpt There are now CentOS-8 images available in Pouta! There are some minor issues with the upstream CentOS8 images, so, for now, they are considered to be in "tech preview". We have solved the one we have found so far by temporarily modifying the image to use "cloud-user" and remove the resolv.conf leftovers. Basic information about our images can be found on docs.csc.fi One issue is that /etc/resolv.conf sometimes has a nameserver defined from the build of the image. There is an open CentOS bug report about this: https://bugs.centos.org/view.php?id=16948 ## Ubuntu 18.04 images published in cPouta and ePouta DevFeed: [Ubuntu 18.04 images published in cPouta and ePouta]() Original publisher: [Read original article]() Author: Unknown (noreply@blogger.com) Published: 2018-10-17T07:30:00Z Content type: release Language: en Sources: [CSC - IT Center For Science - Cloud Team]() Topics: [Ubuntu](), [Cloud](), [ssh](), [Command-line interface](), [releases]() Tags: [cli](), [cloud](), [cpouta](), [diskimage](), [ed25519](), [epouta](), [horizon](), [image](), [lts](), [openstack](), [release](), [ssh](), [ubuntu]() ### AI overview Ubuntu 18.04 LTS images are available in the cPouta and ePouta cloud environments. The article explains that the images use Canonical's unmodified image, the default SSH user is ubuntu, and users can upload other Ubuntu cloud images or configure users with cloud-init and the OpenStack CLI. ### Source excerpt Hello Ubuntu fan boys and girls! An image containing latest LTS Ubuntu release (18.04 Bionic Beaver) is now available in c and ePouta! This time we opted to use the image provided by Canonical without any modifications. This means the user used to ssh in is now "ubuntu" instead of "cloud-user". In any case, trying to ssh in as root will tell you which user to ssh in as In case you want to try even newer versions of Ubuntu, say the "in-between" releases like 18.10 Cosmic Cuttlefish - head over to http://cloud-images.ubuntu.com/ , select the release and fetch the "cloudimg-amd64.img" - for example "cosmic-server-cloudimg-amd64.img" - which is a QCOW2 image. This you can then upload as an image in your c/ePouta project. Our user guide has some pictures and instructions how to work with and upload new images: https://research.csc.fi/pouta-adding-images To add your ssh key under a new "cloud-user" (in case you don't want to use ubuntu user) you can do something like below. First create a file that has the cloud-init user data. Then use that file as input to the openstack CLI tool. $ cat cloud-init.cfg #cloud-config users: - default: - default_user: name: cloud-user gecos: Cloud User sudo: ["ALL=(ALL) NOPASSWD:ALL"] ssh_authorized_keys: - ssh-ed25519 AAAAMYKEYQ user@email.example.org And then the openstack CLI command : $ openstack server create ubuntu1804 --flavor standard.small --image Ubuntu-18.04 --key mykey --security-group default --security-group ssh-group --user-data cloud-init.cfg It is if course possible to use horizon to supply the user data as well. p.s. Yes, ed25519 keys works this way! The web interface openstack horizon still does not support them yet.