Photon OS 2.0 release has a different focus and while it provides full RPM-OSTree functionality (updated to 2017), it lets the user drive it, rather than provide a pre-defined solution as part of the installation.  
 
 The number of packages included in the RPMS repo in Photon OS 2.0 increased significantly, compared to 1.0. To keep the ISO at reasonable size, Photon OS 2.0 no longer includes the compressed ostree.repo file, that helped optimize both the server and host install in 1.0 or 1.0 Rev2. That decision affected the OSTree features we ship out of the box. Customer could achieve the same results by several additional simple steps, that will be explained in this chapter. In addition, there is a new way to create a host raw image at server.
 

 ### 12.1 Installing an RPM-OSTree server

 Photon OS 2.0 installer contains an option to install an OSTree server, just like Photon 1.0 OS does. It will not run, however, the server 'compose tree' as part of installation, as most users will want to start from scratch to create their own image anyway, using different package set and customized settings.

 In addition to starter photon-base.json, we provide photon-minimal.json and photon-full.json, updated with a 2.0 Refspec. We still fire up an Apache web server, that will point to an empty site initially at the repo directory. Assuming you've customized photon-base.json to you liking, all you need to do is to run the commands you are already familiar with from [[Chapter 9|Photon-RPM-OSTree:-9-Package-oriented-server-operations]].

 ```
 root [ /srv/rpm-ostree ]# ostree --repo=repo init --mode=archive-z2
 root [ /srv/rpm-ostree ]# rpm-ostree compose tree --repo=repo photon-base.json
 ```
 Now if you point a browser to http://<server_IP_address>, you should see the familiar directory structure of an OSTree repo.
 

 ### 12.2 Installing an RPM-OSTree host

 Photon OS 2.0 installer no longer includes a UI option to deploy a host manually - either against a default or a custom server repo, and also there is no official online Photon OS 2.0 OSTree repo published. This is now completely customer driven.  

 Automated host install is supported, as explained in [[Chapter 7.2 Automated install of a custom host via kickstart|Photon-RPM-OSTree:-7-Installing-a-host-against-a-custom-server-repository#72-automated-install-of-a-custom-host-via-kickstart]].  

 ### 12.3 Rebasing a host from Photon 1.0 to 2.0

 If kickstart sounds too complicated and we still want to go the UI way like in 1.0, fortunately, there is a workaround that requires an extra step. Also, if you have an installed Photon 1.0 or 1.0 Rev2 that you want to carry to 2.0, you need to rebase it. Notice that I didn't say "upgrade".   
 
 Basically the OSTree repo will switch to a different branch on a different server, following the new server's branch versioning scheme. The net result is that the lots of packages will get changed to newer versions from newer OSTree repo, that has been composed from a newer Photon OS 2.0 RPMS repo. Again, I didn't say "upgraded", neither the rebase command output, that lists "changed" packages. Some obsolete packages will be removed, new packages will be added, either because they didn't exist in 1.0 repo, or because the new config file includes them.  
 The OS name is the same (Photon), so the content in /var and /etc will be transferred over.  
 

 1. To install fresh, deploy a Photon 1.0 Rev2 host default, as described in [[Chapter 2|Photon-RPM-OSTree:-2-Installing-a-host-against-default-server-repository]]. Of course, if you already have an existing Photon OS 1.0 host that you want to move to 2.0, skip this step.
 2. Edit /ostree/repo/config and substitute the url, providing the IP address for the Photon OS 2.0 RPM-OSTree server installed above. This was explained in [[Chapter 10|Photon-RPM-OSTree:-10-Remotes#102-switching-repositories]].  

 ostree should confirm that is the updated server IP for the "photon" remote.
 ```
 root@ostree-host [ ~ ]# ostree remote show-url photon
 http://10.118.101.180
 ```
 3. Rebase your host to the new 2.0 server and Refspec.
 ```
 root@ostree-host [ ~ ]# rpm-ostree rebase photon/2.0/x86_64/minimal
 
 549 metadata, 2654 content objects fetched; 119853 KiB transferred in 17 seconds
 Copying /etc changes: 6 modified, 0 removed, 14 added
 Transaction complete; bootconfig swap: yes deployment count change: 1
 Deleting ref 'photon:photon/1.0/x86_64/minimal'
 Changed:
   Linux-PAM 1.2.1-3.ph1 -> 1.3.0-1.ph2
   attr 2.4.47-3.ph1 -> 2.4.47-4.ph2
   autogen-libopts 5.18.7-2.ph1 -> 5.18.12-2.ph2
   bash 4.3.30-4.ph1 -> 4.4-5.ph2
   bc 1.06.95-3.ph1 -> 1.06.95-3.ph2
   binutils 2.25.1-2.ph1 -> 2.29-3.ph2
   bridge-utils 1.5-3.ph1 -> 1.6-1.ph2
   bzip2 1.0.6-6.ph1 -> 1.0.6-8.ph2
   ca-certificates 20160109-5.ph1 -> 20170406-3.ph2
   coreutils 8.25-2.ph1 -> 8.27-2.ph2
   cpio 2.12-2.ph1 -> 2.12-3.ph2
   cracklib 2.9.6-2.ph1 -> 2.9.6-8.ph2
   cracklib-dicts 2.9.6-2.ph1 -> 2.9.6-8.ph2
   curl 7.51.0-2.ph1 -> 7.54.1-1.ph2
   dbus 1.8.8-5.ph1 -> 1.11.12-1.ph2
   device-mapper 2.02.141-5.ph1 -> 2.02.171-3.ph2
   device-mapper-libs 2.02.141-5.ph1 -> 2.02.171-3.ph2
   docker 1.12.1-1.ph1 -> 17.06.0-1.ph2
   dracut 044-3.ph1 -> 045-4.ph2
   dracut-tools 044-3.ph1 -> 045-4.ph2
   elfutils-libelf 0.165-2.ph1 -> 0.169-1.ph2
   expat 2.2.0-1.ph1 -> 2.2.0-2.ph2
   file 5.24-2.ph1 -> 5.30-2.ph2
   filesystem 1.0-8.ph1 -> 1.0-13.ph2
   findutils 4.6.0-2.ph1 -> 4.6.0-3.ph2
   flex 2.5.39-3.ph1 -> 2.6.4-2.ph2
   glib 2.47.6-2.ph1 -> 2.52.1-2.ph2
   glib-networking 2.46.1-2.ph1 -> 2.50.0-1.ph2
   glibc 2.22-9.ph1 -> 2.26-1.ph2
   gmp 6.0.0a-3.ph1 -> 6.1.2-2.ph2
   gnutls 3.4.11-2.ph1 -> 3.5.10-1.ph2
   gobject-introspection 1.46.0-2.ph1 -> 1.52.1-4.ph2
   gpgme 1.6.0-2.ph1 -> 1.9.0-2.ph2
   grep 2.21-2.ph1 -> 3.0-3.ph2
   grub2 2.02-5.ph1 -> 2.02-9.ph2
   gzip 1.6-2.ph1 -> 1.8-1.ph2
   iana-etc 2.30-2.ph1 -> 2.30-2.ph2
   iproute2 4.2.0-2.ph1 -> 4.10.0-3.ph2
   iptables 1.6.0-5.ph1 -> 1.6.1-4.ph2
   json-glib 1.0.4-2.ph1 -> 1.2.8-1.ph2
   kmod 21-4.ph1 -> 24-3.ph2
   krb5 1.14-4.ph1 -> 1.15.1-2.ph2
   libarchive 3.1.2-7.ph1 -> 3.3.1-1.ph2
   libassuan 2.4.2-2.ph1 -> 2.4.3-1.ph2
   libcap 2.25-2.ph1 -> 2.25-7.ph2
   libffi 3.2.1-2.ph1 -> 3.2.1-5.ph2
   libgcc 5.3.0-3.ph1 -> 6.3.0-3.ph2
   libgcrypt 1.6.5-2.ph1 -> 1.7.6-1.ph2
   libgomp 5.3.0-3.ph1 -> 6.3.0-3.ph2
   libgpg-error 1.21-2.ph1 -> 1.27-1.ph2
   libgsystem 2015.1-2.ph1 -> 2015.2-1.ph2
   librepo 1.7.17-2.ph1 -> 1.7.20-2.ph2
   libselinux 2.5-2.ph1 -> 2.6-4.ph2
   libsepol 2.5-2.ph1 -> 2.6-1.ph2
   libsolv 0.6.19-2.ph1 -> 0.6.26-3.ph2
   libsoup 2.53.90-2.ph1 -> 2.57.1-2.ph2
   libssh2 1.8.0-1.ph1 -> 1.8.0-1.ph2
   libstdc++ 5.3.0-3.ph1 -> 6.3.0-3.ph2
   libtasn1 4.7-3.ph1 -> 4.10-1.ph2
   libtool 2.4.6-2.ph1 -> 2.4.6-3.ph2
   libxml2 2.9.4-3.ph1 -> 2.9.4-11.ph2
   linux 4.4.41-1.ph1 -> 4.9.43-2.ph2
   m4 1.4.17-2.ph1 -> 1.4.18-1.ph2
   mkinitcpio 19-2.ph1 -> 23-3.ph2
   mpfr 3.1.3-2.ph1 -> 3.1.5-1.ph2
   ncurses 6.0-2.ph1 -> 6.0-10.ph2
   net-tools 1.60-7.ph1 -> 1.60-10.ph2
   nettle 3.2-2.ph1 -> 3.3-1.ph2
   nspr 4.12-2.ph1 -> 4.15-1.ph2
   nss-altfiles 2.19.1-2.ph1 -> 2.23.0-1.ph2
   openssh 7.4p1-1.ph1 -> 7.5p1-4.ph2
   openssl 1.0.2j-1.ph1 -> 1.0.2l-1.ph2
   ostree 2015.7-5.ph1 -> 2017.5-1.ph2
   pcre 8.39-1.ph1 -> 8.40-4.ph2
   photon-release 1.0-6.ph1 -> 2.0-1.ph2
   pkg-config 0.28-2.ph1 -> 0.29.2-1.ph2
   popt 1.16-2.ph1 -> 1.16-4.ph2
   procps-ng 3.3.11-3.ph1 -> 3.3.12-2.ph2
   readline 6.3-4.ph1 -> 7.0-2.ph2
   rpm-ostree 2015.7-2.ph1 -> 2017.5-1.ph2
   sed 4.2.2-2.ph1 -> 4.4-2.ph2
   shadow 4.2.1-8.ph1 -> 4.2.1-13.ph2
   systemd 228-32.ph1 -> 233-7.ph2
   util-linux 2.27.1-2.ph1 -> 2.29.2-3.ph2
   vim 7.4-6.ph1 -> 8.0.0533-3.ph2
   which 2.21-2.ph1 -> 2.21-3.ph2
   xz 5.2.2-2.ph1 -> 5.2.3-2.ph2
   zlib 1.2.8-3.ph1 -> 1.2.11-1.ph2
 Removed:
   db-6.1.26-2.ph1.x86_64
   e2fsprogs-1.42.13-2.ph1.x86_64
   gdbm-1.11-2.ph1.x86_64
   hawkey-2014.1-4.ph1.x86_64
   iputils-20151218-3.ph1.x86_64
   libhif-0.2.2-2.ph1.x86_64
   lua-5.3.2-2.ph1.x86_64
   nss-3.25-1.ph1.x86_64
   python2-2.7.11-8.ph1.x86_64
   python2-libs-2.7.11-8.ph1.x86_64
   rpm-4.11.2-11.ph1.x86_64
   sqlite-autoconf-3.11.0-2.ph1.x86_64
   tcsh-6.19.00-4.ph1.x86_64
 Added:
   bubblewrap-0.1.8-1.ph2.x86_64
   bzip2-libs-1.0.6-8.ph2.x86_64
   ca-certificates-pki-20170406-3.ph2.x86_64
   curl-libs-7.54.1-1.ph2.x86_64
   e2fsprogs-libs-1.43.4-2.ph2.x86_64
   expat-libs-2.2.0-2.ph2.x86_64
   fuse-2.9.7-2.ph2.x86_64
   gnupg-2.1.20-2.ph2.x86_64
   libdb-5.3.28-1.ph2.x86_64
   libksba-1.3.5-1.ph2.x86_64
   libltdl-2.4.6-3.ph2.x86_64
   libseccomp-2.3.2-1.ph2.x86_64
   ncurses-libs-6.0-10.ph2.x86_64
   ncurses-terminfo-6.0-10.ph2.x86_64
   npth-1.3-1.ph2.x86_64
   nss-libs-3.31-2.ph2.x86_64
   openssh-clients-7.5p1-4.ph2.x86_64
   openssh-server-7.5p1-4.ph2.x86_64
   pcre-libs-8.40-4.ph2.x86_64
   pinentry-1.0.0-2.ph2.x86_64
   rpm-libs-4.13.0.1-5.ph2.x86_64
   sqlite-libs-3.19.3-1.ph2.x86_64
   util-linux-libs-2.29.2-3.ph2.x86_64
   xz-libs-5.2.3-2.ph2.x86_64
 
 root@ostree-host [ ~ ]# rpm-ostree status
   TIMESTAMP (UTC)         VERSION           ID             OSNAME     REFSPEC                              
   2017-08-31 18:19:36     2.0_minimal       f4497b1948     photon     photon:photon/2.0/x86_64/minimal
 * 2017-01-11 02:18:42     1.0_minimal.1     4a21972b29     photon     photon:photon/1.0/x86_64/minimal
 ```
 That's it! You may now reboot to the new Photon OS 2.0 image. The updated ostree and rpm-ostree packages have a slightly changed output format:
 ```
 root@ph2-ostree-host [ ~ ]# rpm-ostree status
 State: idle
 Deployments:
 * photon:photon/2.0/x86_64/minimal
              Version: 2.0_minimal (2017-08-31 18:19:36)
               Commit: f4497b194826adb0db6e17a6867df04edd1dc1ebe796a73db9f19b973b5658df
 
   photon:photon/1.0/x86_64/minimal
              Version: 1.0_minimal.1 (2017-01-11 02:18:42)
               Commit: 4a21972b293978d39777017ccb33dde45713dd435b3cb77ee42161e7e849e5e4
 ```
 
 There are some side effects of installing Photon OS 2.0 based on the skeleton of a 1.0. For one, the custom disk partitioning is not available in 1.0. There could be others, I cannot think of now.
 

 ### 12.4 Creating a host raw image

 It is now possible to run at server a script that is part of RPM-OStree package, to create a host raw mage.
 

 [[Back to main page|Photon-RPM-OSTree:-a-simple-guide]] | [[Previous page|Photon-RPM-OSTree:-11-Running-container-applications-between-bootable-images]] | [[ Next page >|Photon-RPM-OSTree:-Appendix-A:-Known-issues]]