70 lines
2.8 KiB
Markdown
70 lines
2.8 KiB
Markdown
Installing *inside* an existing system
|
|
---------------------------------------
|
|
|
|
A really neat feature of OSTree is that you can
|
|
*parallel install* inside your existing OS. Let's try that, we
|
|
first make sure we have the ostree packages:
|
|
|
|
```
|
|
yum -y install ostree ostree-grub2
|
|
```
|
|
|
|
Next, we add `/ostree/repo` to the filesystem:
|
|
```
|
|
ostree admin init-fs /
|
|
```
|
|
|
|
Add a remote which points to the Fedora Rawhide content:
|
|
```
|
|
ostree remote add --set=gpg-verify=false fedora-ws-rawhide https://kojipkgs.fedoraproject.org/compose/ostree/rawhide/
|
|
```
|
|
|
|
Pull down the content (you can interrupt and restart this):
|
|
```
|
|
ostree --repo=/ostree/repo pull fedora-ws-rawhide:fedora/rawhide/x86_64/workstation
|
|
```
|
|
|
|
Initialize an "os" for this, which acts as a state root.
|
|
```
|
|
ostree admin os-init fedora
|
|
```
|
|
|
|
**For EFI systems**: currently ostree uses the presence of /boot/grub2/grub.cfg to detect a BIOS system,
|
|
but that can be present on systems booted with EFI as well. If you boot with EFI
|
|
(/sys/firmware/efi exists), then you need to move /boot/grub2/grub.cfg aside:
|
|
```
|
|
mv /boot/grub2/grub.cfg /boot/grub2/grub.cfg.bak
|
|
```
|
|
Since this file is not used on a EFI system, this won't break the operation of your current system. While you are at it, back up your existing grub config:
|
|
```
|
|
cp /boot/efi/EFI/fedora/grub.cfg /boot/efi/EFI/fedora/grub.cfg.bak
|
|
```
|
|
|
|
Deploy; we use `enforcing=0` to avoid SELinux issues for now, and --karg=rghb=0 to avoid a hang with Plymouth (these aren't needed if deploying Fedora 26 currently).
|
|
```
|
|
ostree admin deploy --os=fedora --karg-proc-cmdline --karg=enforcing=0 --karg=rhgb=0 fedora-ws-rawhide:fedora/rawhide/x86_64/workstation
|
|
```
|
|
|
|
To initialize this root, you'll need to copy over your `/etc/fstab`, `/etc/locale.conf`, `/etc/default/grub` at least, along with the ostree remote that we added:
|
|
```
|
|
for i in /etc/fstab /etc/default/grub /etc/locale.conf /etc/ostree/remotes.d/fedora-ws-rawhide.conf ; do cp $i /ostree/deploy/fedora/deploy/$checksum.0/$i; done
|
|
```
|
|
If you have a separate `/home` mount point, you'll need to change
|
|
that `fstab` copy to refer to `/var/home`. If you *don't* have a separate /home mount
|
|
point, then you need to make sure that a symlink will be created:
|
|
```
|
|
echo 'L /var/home - - - - ../sysroot/home' > /ostree/deploy/fedora/deploy/$checksum.0/etc/tmpfiles.d/00rpm-ostree.conf
|
|
```
|
|
|
|
You'll also need to copy your user entry from `/etc/passwd`, `/etc/group`,
|
|
and `/etc/shadow` into the new `/etc/`, and add yourself to the wheel group
|
|
in `/etc/group`. Don't copy just copy these files literally, however, since
|
|
the system users and groups won't be the same.
|
|
|
|
**For BIOS systems**: while ostree regenerated the bootloader configuration,
|
|
it writes config into `/boot/loader/grub.cfg`. On a current `grubby`
|
|
system, you'll need to copy that version over:
|
|
|
|
```
|
|
cp /boot/loader/grub.cfg /boot/grub2/grub.cfg
|
|
```
|