Quick and easy way to create a personalized iso file of Fedora CoreOS that contains your public SSH key.
The bash script create-fcos-iso-with-ssh-key.sh will
- Download an official iso file into a temporary directory (created with
mktemp -d) - Embed your public SSH key on to the iso
- Print the filepath of the iso to stdout
podman or docker
$ bash ./create-fcos-iso-with-ssh-key.sh podman x86_64 stable ~/.ssh/id_rsa.pub myuser
| argument nr | value |
|---|---|
| 1 | podman or docker |
| 2 | architecture (x86_64, ...) |
| 3 | stable, testing or next |
| 4 | path to your public SSH key |
| 5 | username (choose core if you need sudo permissions) |
Download the stable release with the architecture x86_64 and create the user core and let the public SSH key ~/.ssh/id_rsa.pub be able to log in over ssh to that account. The software podman is the tool used to run the containers in the bash script.
$ bash ./create-fcos-iso-with-ssh-key.sh podman x86_64 stable ~/.ssh/id_rsa.pub core 2> /dev/null
/tmp/tmp.E6sy3HM3Ls/fedora-coreos-32.20201004.3.0-live.x86_64.iso
The same command once again, but this time without 2> /dev/null so that progress information is shown.
$ bash ./create-fcos-iso-with-ssh-key.sh podman x86_64 stable ~/.ssh/id_rsa.pub core
Trying to pull quay.io/coreos/fcct:release...
Getting image source signatures
Copying blob sha256:34dbed599d79d8b71ec20eff9d57e57d37c74a576e2e2e9eb4c1aed8aad11ad7
Copying blob sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4
Writing manifest to image destination
Storing signatures
Trying to pull quay.io/coreos/coreos-installer:release...
Getting image source signatures
Copying blob sha256:dc2be5cbf70d0fc92b67e0fc72813da304e922cd67e20d2ecf6d1f5ca79e38b6
Copying blob sha256:1b33617cbc3e97135769d6a9216e0c2d53c325ce519f8d54f8e60b2c240351e7
Copying blob sha256:4a6d7f80866db4acdc4139d978466d2367dc80b9df353dd05be478fffaf97ee8
Copying blob sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4
Writing manifest to image destination
Storing signatures
Read disk 41.1 MiB/742.0 MiB (5%)
Read disk 79.5 MiB/742.0 MiB (10%)
Read disk 122.5 MiB/742.0 MiB (16%)
Read disk 164.6 MiB/742.0 MiB (22%)
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Read disk 245.9 MiB/742.0 MiB (33%)
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Read disk 368.8 MiB/742.0 MiB (49%)
Read disk 397.8 MiB/742.0 MiB (53%)
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Read disk 460.8 MiB/742.0 MiB (62%)
Read disk 497.2 MiB/742.0 MiB (67%)
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Read disk 742.0 MiB/742.0 MiB (100%)
gpg: Signature made Mon Oct 19 19:01:03 2020 UTC
gpg: using RSA key 97A1AE57C3A2372CCA3A4ABA6C13026D12C944D0
gpg: Good signature from "Fedora (32) <fedora-32-primary@fedoraproject.org>" [ultimate]
Read disk 742.0 MiB/742.0 MiB (100%)
/tmp/tmp.5r26NLqbuF/fedora-coreos-32.20201004.3.0-live.x86_64.iso
After creating the iso file, write it to a USB stick. Some tutorials: Windows, MacOS, Ubuntu.
Assuming core is the username chosen before and 192.0.2.10 is the IP address that Fedora CoreOS got from the DHCP server while booting up, you can log in with
$ ssh core@192.0.2.10