qSharpy/misc

misc

Fedora core-os full installation

FEDORA COREOS PODMAN CONTAINER IMAGE https://docs.rs/crate/coreos-installer/0.1.2

make a directory for all fikes mkdir coreos-files cd coreos-files and use podman to download the coreos iso

podman run --privileged --pull=always --rm -v .:/data -w /data \
    quay.io/coreos/coreos-installer:release download -s stable -p metal -f iso

make a fcc file touch fcct-v0.1.fcc, and write this down (replace the ssh-rsa with your key)

variant: fcos
version: 1.3.0
passwd:
  users:
    - name: core
      ssh_authorized_keys:
        - ssh-rsa AAAAB3NzaC...

then, transpile the fcc in a ign (basically it does yaml > json)

podman run -i --rm quay.io/coreos/fcct:release --pretty --strict < fcct-v0.1.fcc > transpiled_config.ign

you can validate your ignition file as below. it only checks for bad indentation

podman run --pull=always --rm -i quay.io/coreos/ignition-validate:release - < transpiled_config.ign

if the above command doesn't return errors, it's time to burn the iso to a usb stick

write lsblk and you will get an output like:

sdc      8:16   1  14.9G  0 disk 
├─sdc1   8:17   1   1.6G  0 part /media/username/usb volume name
└─sdc2   8:18   1   2.4M  0 part 

you have to see where the USB is mounted, in this case it's /dev/sdc so the command I will write to burn the iso to USB is:

sudo dd bs=4M if=/var/home/bogdanbujor/fcos-fcct-ign/fedora-coreos-33.20210217.3.0-live.x86_64.iso of=/dev/sdc conv=fdatasync  status=progress

you will have to modify of=/dev/sdc with of=/dev/sdX, where X can be other letters as well you will also have to modify the path of the ISO file. in my case it was if=/var/home/bogdanbujor/fcos-fcct-ign/fedora-coreos-33.20210217.3.0-live.x86_64.iso. yours could be if=/var/home/$USER/coreos-files/fedora-coreos...iso. verify with pwd in the folder where you downloaded the ISO and append with the ISO name

after the dd command finishes (which will take some time), you will have to boot from the USB thumb drive on the PC you want fedora installed

then, at the command line, you have to

sudo coreos-installer install /dev/sda --insecure-ignition \
    --ignition-url http://10.1.1.188/transpiled_config.ign

This

--ignition-url http://10.1.1.188/transpiled_config.ign

will change in your case. put your transpiled ignition file on an accesible web server.

Read more below

https://docs.fedoraproject.org/en-US/fedora-coreos/bare-metal/ https://coreos.github.io/coreos-installer/customizing-install/ https://github.com/coreos/ignition#config-validation https://docs.fedoraproject.org/en-US/fedora-coreos/authentication/

Problems with /dev/sda in use?

basically I wanted to install coreos on top of of fedora but /dev/sda was in use, and coreos-installer wouldn't launch so a solution I found was to erase all data from /dev/sda

1. lsblk
2. sudo dd if=/dev/zero of=/dev/sda bs=512 count=1
3. sudo blkdiscard /dev/sda After blkdiscard (which does a TRIM on the SSD), I gave the PC around 1min rest for the blkdiscard command to propagate (some people say it's necessary, others say it's bs)
4. systemctl reboot