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|
#!/bin/bash
#
# Do a system upgrade, from a version to the next.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program. If not, see
# <http://www.gnu.org/licenses/>.
# Load
source $APP_BASE/lib/hydra/functions || exit 1
hydra_config_load
# Parameters
TMP="/tmp"
STATE="$TMP/system-upgrade"
ENV="$TMP/system-upgrade-env"
# Command line arguments
BASENAME="`basename $0`"
NEXTRELEASE="$1"
# Proceed to the next upgrade stage
function hydra_system_upgrade_stage {
STAGE="$1"
echo $STAGE > $STATE
hydra_system_upgrade_$STAGE
}
# Set and check upgrade environment
function hydra_system_upgrade_env {
# Available releases
#release="`facter lsbdistcodename`" # this doesn't work on squeeze
release="`facter 2> /dev/null | grep lsbdistcodename | sed -e 's/lsbdistcodename => //'`"
nextrelease="`hydra_next_debian_release $release`"
# Is a virtual machine?
virtual="`facter 2> /dev/null | grep virtual | grep -v '^is_virtual' | sed -e 's/virtual => //'`"
# Save environment
echo "release=$release" > $ENV
echo "nextrelease=$nextrelease" >> $ENV
echo "nextrelease=$nextrelease" >> $ENV
echo "virtual=$virtual" >> $ENV
# Check release
if [ "$?" != "0" ]; then
echo "Unsupported release"
exit 1
fi
# Check optional parameter
if [ ! -z "$NEXTRELEASE" ]; then
if [ "$NEXTRELEASE" == "$release" ]; then
echo "System is already upgraded to $NEXTRELEASE"
exit 1
fi
if [ "$NEXTRELEASE" != "$nextrelease" ]; then
echo "Cannot upgrade: next release for this system is $nextrelease"
exit 1
fi
fi
# Set next state
hydra_system_upgrade_stage prepare
}
# Prepare the environment for a system upgrade
function hydra_system_upgrade_prepare {
# Ensure puppet is stopped during the process
echo "Disabling puppet during the upgrade..."
hydractl puppet-disable
# Configure apt for the next debian release
echo ""
echo "Updating apt configuration..."
sed -i -e "s/$release/$nextrelease/g" /etc/apt/sources.list
sed -i -e 's|^deb http://backports.debian.org/debian-backports|#deb http://backports.debian.org/debian-backports|' /etc/apt/sources.list
if [ -e "/etc/apt/preferences" ]; then
sed -i -e "s/$release/$nextrelease/g" /etc/apt/preferences
fi
# These will be generated by puppet and can be safely removed
rm -f /etc/apt/sources.list.d/*
rm -f /etc/apt/preferences.d/*
# These might lead in upgrade errors
if [ "$virtual" == "vserver" ] && [ "$nextrelease" == "wheezy" ]; then
apt-get remove makedev -y
apt-get remove colord -y
fi
# Set next state
hydra_system_upgrade_stage download
}
# Update package listing and download new packages
function hydra_system_upgrade_download {
echo ""
echo "Updating package listing..."
apt-get update
echo ""
echo "Downloading packages..."
apt-get dist-upgrade -d -y
hydra_system_upgrade_stage upgrade
}
# Proceed with the actual upgrade
function hydra_system_upgrade_upgrade {
echo ""
echo "Upgrading the system..."
DEBIAN_FRONTEND=noninteractive apt-get dist-upgrade
if [ "$?" != "0" ]; then
echo "Upgrade failed. Please fix it manually and run this command again."
exit 1
fi
hydra_system_upgrade_stage custom
}
# Custom upgrade procedures
function hydra_system_upgrade_custom {
# Custom jessie stuff
if [ "$nextrelease" == "jessie" ]; then
# We're going masterless, so no puppet and old services
apt-get purge puppet libapache2-mod-passenger 'munin*' 'nagios*' -y
rm -rf /etc/munin/plugins /etc/munin/plugin-conf.d /usr/local/sbin/check-puppetd.sh
fi
hydractl trac-upgrade
hydra_system_upgrade_stage cleanup
}
# Cleanup procedures
function hydra_system_upgrade_cleanup {
apt-get autoremove -y --purge
apt-get clean
#hydra_system_upgrade_stage puppet
}
# Enable puppet again
#function hydra_system_upgrade_puppet {
# echo ""
# echo "Starting puppet again..."
# hydractl puppet-enable
#}
# Initialize
if [ ! -e "$STATE" ]; then
hydra_system_upgrade_stage env
else
# Resume from the previous state
STAGE="`cat $STATE`"
# Restore environment
if [ -e "$ENV" ]; then
source $ENV
fi
if [ ! -z "$STAGE" ]; then
hydra_system_upgrade_stage $STAGE
fi
fi
# Teardown
rm -f $STATE
rm -f $ENV
|
