Install RancherOs on FreeNas 11.3
- The automated RancherOs installation aka Docker VM has been removed in
11.3
- RancherOs doesn’t support EFI boot out of the box
- Thanks to MKinney howto
- This howto is provided without warranty
- TODO the proper way of doing it is somewhere here
- Some stuff about losetup
1. Make a EFI bootable RancherOs image
wget https://releases.rancher.com/os/v1.5.5/rancheros.iso
wget http://releases.ubuntu.com/18.04/ubuntu-18.04.4-live-server-amd64.iso
mkdir tmpubuntu tmprancheros tmprancheros_dest
sudo mount ubuntuserverlive.iso tmpubuntu
sudo mount rancheros.iso tmprancheros
fallocate -l 150M rancheros.img
gdisk rancheros.img
o,y,n,enter,enter,ef00,w,Y
sudo losetup --partscan --show --find rancheros.img
sudo mkfs.fat /dev/loop2p1
sudo mount /dev/loop2p1 rancheros_dest
sudo cp -r tmprancheros/* tmprancheros_dest/
sudo cp -r tmpubuntu/EFI tmprancheros_dest/
- Replace the content of
tmprancheros_dest/boot/grub/grub.cfg
with:
set timeout=5
menuentry "Install Rancher" {
linux /boot/vmlinuz-4.14.138-rancher rancher.autologin=tty1 rancher.autologin=ttyS0 rancher.autologin=ttyS1 console=tty1 console=ttyS0 console=ttyS1 printk.devkmsg=on panic=10 ---
initrd /boot/initrd-v1.5.5
}
sudo umount tmprancheros_dest
sudo losetup -d /dev/loop2
sudo umount tmpubuntu tmprancheros
2. Installation in FreeNas as Vm
- Create a VM with EFI boot 2GB RAM choose virtio for all the driver
better performance with linux
- Add a
RAW
device and select your rancheros.img
- Start the VM
- Go to serial and in the shell
cu -l /dev/nmdmXX
at this point you should
have a rancher shell
sudo fdisk /dev/vda
then g,n,1,+200M,t,1,n,enter,enter,w
you
should something like at the end
Disk /dev/vda: 10 GiB, 10737418240 bytes, 20971520 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes
Disklabel type: gpt
Disk identifier: 2B56EE14-44BF-6443-A197-EF73723B715F
Device Start End Sectors Size Type
/dev/vda1 2048 411647 409600 200M EFI System
/dev/vda2 411648 20971486 20559839 9.8G Linux filesystem
- Format the boot partition
sudo mkdosfs -n RANCHER -F 32 /dev/vda1
- Format the main filesystem
sudo mkfs.ext4 -L RANCHER_STATE /dev/vda2
- Create a
cloud-config.yml
see https://rancher.com/docs/os/v1.x/en/installation/running-rancheros/server/install-to-disk/ for minimum content
sudo mkdir /dev/sr0
for installer checking about iso mounted before
install
- Install ros with
sudo ros install -t gptsyslinux -c cloud-config.yml -d /dev/vda -p /dev/vda2
mkdir /mnt/efipart && sudo mount /dev/vda1 /mnt/efipart
mkdir /mnt/installer && sudo mount /dev/vdb1 /mnt/installer
sudo cp -r /mnt/installer/EFI /mnt/efipart
- Add a grub.cfg in
/mnt/efipart/EFI/BOOT/grub.cfg
with in it:
You might want to add/remove autologin as you wish below
- tty0 I think is VNC but I havent tested it
- ttyS0 is serial (I have autologin enable in serial see below)
set timeout=1
menuentry "Rancher from GPT" {
search --no-floppy --set=root --label RANCHER_STATE
linux /boot/vmlinuz-4.14.138-rancher printk.devkmsg=on rancher.state.dev=LABEL=RANCHER_STATE rancher.state.wait panic=10 console=tty0 console=ttyS0 rancher.autologin=ttyS0
initrd /boot/initrd-v1.5.5
}
sudo umount /mnt/*
sudo reboot
- You are good to go
- You can remove the RAW device in the VM config in FreeNas
12 commentaires
Rudi Pittman · 18 mars 2020 à 17 h 46 min
Can I or can I not use my existing rancher img that was previously being used by freenas? ie
-rw-r–r– 1 root wheel 21474836480 Mar 18 02:13 rancher.img_docker1
I have around 10 different docker containers defined inside and I really don’t want to have to redo all of them.
HugoPoi · 11 avril 2020 à 16 h 32 min
If the image is a VM image like a zvol, I think it will work, but I’m not sure, it will only work if the 11.2 behavior is EFI compatible.
You may patch your existing image/snapshot by justing installing the efi bootloader aka grub in it.
Rob RD · 4 avril 2020 à 19 h 36 min
Parfait – Merci Beaucoup! :)
dario · 12 avril 2020 à 14 h 07 min
Thanks for this guide. I am stuck at Step 12:
> sudo mount /dev/vdb1 /mnt/installer
ther is no /dev/vdb1, regardingless if I choose to boot at step 10 or not
HugoPoi · 22 avril 2020 à 23 h 34 min
Your installer may be on a different disk if you choose SCSI in place of virtio when you add the raw image device in Freenas, you can identified with
cat /proc/partitions
and
mount
it should be /dev/sda1 maybe
somebody · 19 avril 2020 à 13 h 07 min
Thank you so much for the step by step guide, it was very helpful. With this I can finally transition from my old Docker VM inherited from FreeNAS 11.1.
Going to state the obvious (for some) and mention that when new version gets released and you run
sudo ros os upgrade
to upgrade you’ll also need to update initrd command in your grub.cfg file on EFI partition, otherwise you’re just going to boot into the same version.
Rudi Pittman · 1 juin 2020 à 1 h 58 min
The problem I have is even though grub is specifying 4.14.138 and initird-v1.5.5 on reboot it tells me those don’t exist. Doing a grub edit and using autocomplete the files it ACTUALLY find are /boot/vmlinuz-4.14.73-rancher and /boot/initrd-v1.4.2. Where the heck are those coming from? When I look on /dev/vda2/boot I see the 4.14.138 and initrd-v1.5.5 as the grub reflects. /mnt/efipart/EFI/BOOT has:
-rwxr-xr-x 1 root root 1334816 May 30 15:13 BOOTx64.EFI
-rwxr-xr-x 1 root root 316 May 30 15:15 grub.cfg
-rwxr-xr-x 1 root root 1146744 May 30 15:13 grubx64.efi
Max · 3 mai 2020 à 16 h 40 min
The image i downloaded does not start. Stuck at step4 in the bhyve shell. Any idea how to proceed from there?
HugoPoi · 10 mai 2020 à 14 h 53 min
Try to change the device order to a lower or higher number to be sure it try to load the good bootloader.
Rudi Pittman · 1 juin 2020 à 18 h 28 min
If you do a « ros os version » on your efi image it’s NOT v1.5.5. It’s v1.4.2 and running the command although it MAY download the files does nothing to actually make the grub.cfg FIND those new files. It’s still looking for vmlinuz-4.14.73 and initrd-v1.4.2.
Johnny Z · 25 juin 2020 à 8 h 49 min
I found them. The guide doesn’t necessarily state where or when to get the files. You should be able to do this to find and copy the files
cd /mnt/installer/boot/
ls -asl
(here you will find the two files)
cp vmlinuz-4.14.138-rancher ../../efipart/efi/boot/
cp initrd-v1.5.5.5 ../../efipart/efi/boot
Double check my paths here but that should basically get you the files so the kernel can load proper
Toohai · 16 septembre 2020 à 8 h 18 min
Missing step after 12 in part 1?
sudo cp -r tmpubuntu/boot/grub tmprancheros_dest/boot/