Set sources.list only for Ubuntu

3.New_server_deployment/3.APT_upgrade/0_setup.sh

@@ -5,21 +5,23 @@ DEBIAN_FRONTEND=noninteractive
 export DEBIAN_FRONTEND
 
 apt-get update
-apt-get install -y apt-transport-https gnupg
+apt-get install -y apt-transport-https gnupg lsb-release
 
 # move 50unattended-upgrades conf if any
-if [ -f /etc/apt/apt.conf.d/50unattended-upgrades.ucf-dist ]; then
-	mv /etc/apt/apt.conf.d/50unattended-upgrades.ucf-dist /etc/apt/apt.conf.d/50unattended-upgrades
+if [ -f '/etc/apt/apt.conf.d/50unattended-upgrades.ucf-dist' ]; then
+	mv '/etc/apt/apt.conf.d/50unattended-upgrades.ucf-dist' '/etc/apt/apt.conf.d/50unattended-upgrades'
 fi
 
 # update sources.list
 rm -f /etc/apt/sources.list~
-echo "Updating /etc/apt/sources.list file."
-cp sources.list /etc/apt/sources.list
-if ( rgrep '14.04' /etc/lsb-release >/dev/null ); then
-	sed -i 's@bionic@trusty@' /etc/apt/sources.list
-elif ( rgrep '16.04' /etc/lsb-release >/dev/null ); then
-	sed -i 's@bionic@xenial@' /etc/apt/sources.list
+if ( lsb_release -a | grep 'Ubuntu' >/dev/null 2>&1 ); then
+	echo "Updating /etc/apt/sources.list file."
+	cp sources.list /etc/apt/sources.list
+	if ( lsb_release -a | grep '14.04' >/dev/null 2>&1 ); then
+		sed -i 's@bionic@trusty@' /etc/apt/sources.list
+	elif ( lsb_release -a | grep '16.04' >/dev/null 2>&1 ); then
+		sed -i 's@bionic@xenial@' /etc/apt/sources.list
+	fi
 fi
 
 # modify sources.list to use ubicast cache
@@ -37,25 +39,6 @@ apt-get dist-upgrade -y -o Dpkg::Options::="--force-confold"
 apt-get install -y apt-transport-https
 apt-get autoremove -y
 
-# migrate to Ubuntu 16.04 if needed
-if ( rgrep '14.04' /etc/lsb-release >/dev/null ); then
-	echo "Upgrading to Ubuntu 16.04."
-	sed -i 's@trusty@xenial@' /etc/apt/sources.list
-	apt-get update
-	apt-get dist-upgrade -y -o Dpkg::Options::="--force-confold" || apt-get install -f -y -o Dpkg::Options::="--force-confold"
-	apt-get dist-upgrade -y -o Dpkg::Options::="--force-confold" || apt-get install -f -y -o Dpkg::Options::="--force-confold"
-	apt-get dist-upgrade -y -o Dpkg::Options::="--force-confold"
-	apt-get autoremove -y
-	echo "16.04 migration ok."
-	echo "The server is rebooting, please wait at least 2 minutes"
-	echo " before restarting the script to continue the configuration."
-	echo "Date: $(date)."
-	echo "Ignore the following message about reboot problem if any."
-	reboot
-	exit 1
-fi
-systemctl unmask nginx || true
-
 # APT panel
 if ( ! test -z ${SKYREACH_APT_TOKEN} ); then
 	echo "Adding skyreach.list to APT sources."