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fix: configure Kubernetes DNS search domains in mesh #539

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fix: configure Kubernetes DNS search domains in mesh #539

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bf584e2
fix: configure Kubernetes DNS search domains in mesh
Sam6734 Jul 13, 2026
dd91db1
fix: retain mesh host DNS resolvers
Sam6734 Jul 14, 2026
5e20665
Merge branch 'main' into mesh-dns
dciangot Jul 29, 2026
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17 changes: 9 additions & 8 deletions pkg/virtualkubelet/templates/mesh.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -88,13 +88,18 @@ export WG_SOCKET_DIR="$TMPDIR"
# Not all environments support this; ignore errors
set -euo pipefail

HOST_DNS=$(grep "^nameserver" /etc/resolv.conf | head -1 | awk '{print $2}')
HOST_DNS_SERVERS=$(awk '/^nameserver/ {print $2}' /etc/resolv.conf)

{
mkdir -p /tmp/etc-override
echo "search default.svc.cluster.local svc.cluster.local cluster.local" > /tmp/etc-override/resolv.conf
echo "nameserver {{.DNSServiceIP}}" >> /tmp/etc-override/resolv.conf
echo "nameserver $HOST_DNS" >> /tmp/etc-override/resolv.conf
for dns in $HOST_DNS_SERVERS; do
case "$dns" in
"{{.DNSServiceIP}}"|"1.1.1.1"|"8.8.8.8") continue ;;
esac
echo "nameserver $dns" >> /tmp/etc-override/resolv.conf
done
echo "nameserver 1.1.1.1" >> /tmp/etc-override/resolv.conf
echo "nameserver 8.8.8.8" >> /tmp/etc-override/resolv.conf
Comment on lines 94 to 104
mount --bind /tmp/etc-override/resolv.conf /etc/resolv.conf
Expand All @@ -111,12 +116,8 @@ mount --make-rprivate / 2>/dev/null || true
mkdir -p $TMPDIR/var-run/wireguard
mount --bind $TMPDIR/var-run /var/run

cat > $TMPDIR/resolv.conf <<EOF
search default.svc.cluster.local svc.cluster.local cluster.local
nameserver {{.DNSServiceIP}}
nameserver 1.1.1.1
EOF
export LOCALDOMAIN=$TMPDIR/resolv.conf

export LOCALDOMAIN=/tmp/etc-override/resolv.conf


wait_for_wstunnel_server() {
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