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+#!/bin/bash

+

+FROM_VERSION="$(awk '/VMware Photon OS /{print $4}' /etc/photon-release)"

+TO_VERSION='3.0'

+

+# The package list of deprecated packages from 2.0 to 3.0

+depPkgsFrom2To3='urlgrabber librepo ceph-deploy conntrack-tools libhif yum createrepo ceph ostree micro-config-drive gmock deltarpm rpm-ostree kibana docker-volume-vsphere yarn mesos yum-metadata-parser'

+

+#Some packages are deprecaed from 3.0, lets remove them before moving to 3.0

+function remove_unsupported_pkgs() {

+  local rc

+  for pkg in $depPkgsFrom2To3; do

+    if rpm -q $pkg; then

+      tdnf erase $pkg -y

+      rc=$?

+      if [ $rc -ne 0 ]; then

+        echo "Could not erase $pkg. Cannot continue."

+        exit $rc

+      fi

+    fi

+  done

+}

+

+function upgrade_photon_release() {

+   tdnf -y update photon-release --releasever=$TO_VERSION --refresh

+}

+

+function distro_upgrade() {

+   tdnf distro-sync --refresh

+}

+

+function rebuilddb() {

+   rpm --rebuilddb

+}

+

+#must reboot after an upgrade

+function ask_for_reboot() {

+  read -p "Reboot is recommended after an upgrade. Reboot now(y/n)?" yn

+  case $yn in

+    [Yy]* ) reboot;;

+    [Nn]* ) exit;;

+  esac

+}

+

+#if the current install has packages deprecated in the target version,

+#there is no clean upgrade path. confirm if it is okay to remove.

+function check_deprecated() {

+  pkgs_to_remove=''

+  for pkg in ${depPkgsFrom2To3}; do

+    installed=`rpm -q $pkg`

+    if [ $? -eq 0 ]; then

+      pkgs_to_remove="${pkgs_to_remove}${pkg}\n"

+    fi

+  done

+  if [ "$pkgs_to_remove" != "" ];then

+    echo "The following packages are deprecated and must be removed before upgrade."

+    echo -e $pkgs_to_remove

+    read -p "Proceed(y/n)?" yn

+    case $yn in

+      [Nn]* ) exit;;

+    esac

+  fi

+}

+

+#there is a chance that /var/run is a directory

+#in this case, move its contents to /run and make it a symlink

+function make_var_run_a_symlink() {

+  if [ -d '/var/run' ] && [ ! -L '/var/run' ] ; then

+    mv /var/run/* /run

+    rm -rf /var/run

+    ln -sf /run /var/run

+  fi

+}

+

+#next version of photon uses specs with dependencies

+#of the form x or y. update tdnf, libsolv and rpm to support it.

+function update_solv_to_support_complex_deps() {

+   tdnf -y update libsolv rpm tdnf --refresh

+   rebuilddb

+}

+

+function check_and_upgrade() {

+  if [ $FROM_VERSION == $TO_VERSION ]; then

+    echo "Your current version $FROM_VERSION is the latest version. Nothing to do."

+    exit

+  fi

+  check_deprecated

+  echo "You are about to upgrade PhotonOS from $FROM_VERSION to $TO_VERSION."

+  echo -n "Please backup your data before proceeding. Continue (y/n)?"

+  read

+  echo

+

+  case $REPLY in

+    [Yy]*)

+      update_solv_to_support_complex_deps

+      remove_unsupported_pkgs

+      rebuilddb

+      make_var_run_a_symlink

+      upgrade_photon_release

+      distro_upgrade

+      rebuilddb

+      ask_for_reboot

+      ;;

+    *) exit;;

+  esac

+}

+

+check_and_upgrade

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+Summary:    Photon upgrade scripts

+Name:       photon-upgrade

+Version:    1.0

+Release:    1%{?dist}

+License:    Apache License

+Group:      System Environment/Base

+Source0:    photon-upgrade.sh

+URL:        https://vmware.github.io/photon/

+Vendor:     VMware, Inc.

+Distribution:   Photon

+BuildArch:  noarch

+Requires:   tdnf

+

+%description

+Photon major upgrade scripts. Addresses 2.0 to 3.0 upgrades.

+

+%prep

+

+%build

+

+%install

+mkdir -p %{buildroot}%{_bindir}

+install -m755 %{SOURCE0} %{buildroot}%{_bindir}

+

+%post

+

+%clean

+rm -rf $RPM_BUILD_ROOT

+

+%files

+%defattr(-,root,root,-)

+%{_bindir}/*

+

+%changelog

+*       Fri Oct 19 2018 Dweep Advani <dadvani@vmware.com> 1.0-1

+-       Initial Photon 2.0 to 3.0 upgrade package