Try to fix DNS (privacy) issues

armbian · Aug 24, 2018 · f10acc0 · f10acc0
1 parent e358089
commit f10acc0
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Showing 3 changed files with 9 additions and 6 deletions.
diff --git a/lib/chroot-buildpackages.sh b/lib/chroot-buildpackages.sh
@@ -59,7 +59,6 @@ create_chroot()
 	printf '#!/bin/sh\nexit 101' > $target_dir/usr/sbin/policy-rc.d
 	chmod 755 $target_dir/usr/sbin/policy-rc.d
 	rm $target_dir/etc/resolv.conf 2>/dev/null
-	echo "1.1.1.1" > $target_dir/etc/resolv.conf
 	rm $target_dir/etc/hosts 2>/dev/null
 	echo "127.0.0.1 localhost" > $target_dir/etc/hosts
 	mkdir -p $target_dir/root/{build,overlay,sources} $target_dir/selinux

diff --git a/lib/distributions.sh b/lib/distributions.sh
@@ -199,7 +199,8 @@ install_common()
 
 	# DNS fix. package resolvconf is not available everywhere
 	if [ -d /etc/resolvconf/resolv.conf.d ]; then
-		echo 'nameserver 1.1.1.1' > $SDCARD/etc/resolvconf/resolv.conf.d/head
+		echo -e "# In case of DNS problems, try uncommenting this and reboot for debugging\n# nameserver 1.1.1.1" \
+		> $SDCARD/etc/resolvconf/resolv.conf.d/head
 	fi
 
 	# premit root login via SSH for the first boot
@@ -265,8 +266,6 @@ install_distribution_specific()
 		exit 0
 		EOF
 		chmod +x $SDCARD/etc/rc.local
-		# DNS fix
-		sed -i "s/#DNS=.*/DNS=1.1.1.1/g" $SDCARD/etc/systemd/resolved.conf
 		;;
 	bionic)
 		# remove doubled uname from motd
@@ -297,8 +296,6 @@ install_distribution_specific()
 		  version: 2
 		  renderer: NetworkManager
 		EOF
-		# DNS fix
-		sed -i "s/#DNS=.*/DNS=1.1.1.1/g" $SDCARD/etc/systemd/resolved.conf
 		# Journal service adjustements
 		sed -i "s/#Storage=.*/Storage=volatile/g" $SDCARD/etc/systemd/journald.conf
 		sed -i "s/#Compress=.*/Compress=yes/g" $SDCARD/etc/systemd/journald.conf

diff --git a/packages/bsp/common/usr/lib/armbian/armbian-firstrun b/packages/bsp/common/usr/lib/armbian/armbian-firstrun
@@ -56,6 +56,13 @@ case "$1" in
 		/etc/skel/.config/xfce4/xfconf/xfce-perchannel-xml/xfwm4.xml
 	fi
 
+	# check whether DNS resolution works, if not switch to Cloudflare DNS
+	fping cloudflare.com >/dev/null 2>&1
+	if [ $? -ne 0 ]; then
+		sed -i "s/#DNS=.*/DNS=1.1.1.1/" /etc/systemd/resolved.conf
+		sed -i "s/# nameserver.*/nameserver 1.1.1.1/" /etc/resolvconf/resolv.conf.d/head
+	fi
+
 	# some hardware workarounds
 	case $LINUXFAMILY in
 		sun7i|sun8i)