Merge #129 README.md: point to Silverblue docs
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Dusty Mabe
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Installing *inside* an existing system
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---------------------------------------
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A really neat feature of OSTree is that you can
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*parallel install* inside your existing OS. Let's try that, we
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first make sure we have the ostree packages:
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```
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yum -y install ostree ostree-grub2
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```
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Before proceeding further, make sure that you have enough space in your root filesystem.
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The recommended minimum is 10GB (the F27 repo we are going to pull takes ~7GB on disk).
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Note that ostree will refuse to continue if you go below 3% of free space, so there's
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no risk of actually running out of space.
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Next, we add `/ostree/repo` to the filesystem:
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```
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ostree admin init-fs /
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```
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Add a remote which points to the Fedora 27 content:
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```
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ostree remote add --set=gpgkeypath=/etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-27-primary fedora-ws-27 https://dl.fedoraproject.org/ostree/27/
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```
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If you do not have the Fedora 27 GPG primary key, you can get it from
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https://getfedora.org/keys/. Alternatively, if you really need to, you can turn
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off GPG verification using the `--no-gpg-verify` option.
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Pull down the content (you can interrupt and restart this):
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```
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ostree --repo=/ostree/repo pull fedora-ws-27:fedora/27/x86_64/workstation
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```
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Initialize an "os" for this, which acts as a state root.
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```
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ostree admin os-init fedora
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```
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**For EFI systems**: currently ostree uses the presence of /boot/grub2/grub.cfg to detect a BIOS system,
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but that can be present on systems booted with EFI as well. If you boot with EFI
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(/sys/firmware/efi exists), then you need to move /boot/grub2/grub.cfg aside:
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```
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mv /boot/grub2/grub.cfg /boot/grub2/grub.cfg.bak
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```
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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:
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```
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cp /boot/efi/EFI/fedora/grub.cfg /boot/efi/EFI/fedora/grub.cfg.bak
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```
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And now, we can deploy the commit we just pulled down. The `--karg-proc-cmdline` switch will
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ensure that the current kernel arguments you used for the current boot will also apply to
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the OSTree boot.
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```
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ostree admin deploy --os=fedora --karg-proc-cmdline fedora-ws-27:fedora/27/x86_64/workstation
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```
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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:
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```
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for i in /etc/fstab /etc/default/grub /etc/locale.conf /etc/ostree/remotes.d/fedora-ws-27.conf ; do cp $i /ostree/deploy/fedora/deploy/$checksum.0/$i; done
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```
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where `$checksum` is whatever the checksum of the deployment is; there should only be a
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single directory there if this is your first deployment.
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If you have a separate `/home` mount point, you'll need to change
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that `fstab` copy to refer to `/var/home`. If you *don't* have a separate /home mount
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point, then you need to make sure that a symlink will be created:
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```
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echo 'L /var/home - - - - ../sysroot/home' > /ostree/deploy/fedora/deploy/$checksum.0/etc/tmpfiles.d/00rpm-ostree.conf
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```
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You'll also need to copy your user entry from `/etc/passwd`, `/etc/group`,
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and `/etc/shadow` into the new `/etc/`, and add yourself to the wheel group
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in `/etc/group`. Don't copy just copy these files literally, however, since
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the system users and groups won't be the same.
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**For BIOS systems**: while ostree regenerated the bootloader configuration,
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it writes config into `/boot/loader/grub.cfg`. On a current `grubby`
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system, you'll need to copy that version over:
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```
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cp /boot/loader/grub.cfg /boot/grub2/grub.cfg
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```
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Note that you will have to repeat this every time a new tree is created, so it
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may be more convenient to just create a symlink:
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```
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cd /boot/grub2
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rm grub.cfg
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ln -s ../loader/grub.cfg .
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```
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@ -25,9 +25,10 @@ See some [https://lists.fedoraproject.org/archives/list/desktop@lists.fedoraproj
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Installing
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------------
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There are ISOs available for [Fedora 27](https://download.fedoraproject.org/pub/fedora/linux/releases/27/WorkstationOstree/x86_64/iso/).
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Alternatively, see a guide for [installing inside an existing system](https://pagure.io/workstation-ostree-config/blob/master/f/README-install-inside.md).
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See the Silverblue documentation at
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https://docs.fedoraproject.org/en-US/fedora-silverblue/installation-guide/.
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There's also a guide for installing inside an existing system:
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https://docs.fedoraproject.org/en-US/fedora-silverblue/installation-dual-boot/.
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Important issues:
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-----------------------
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