diff options
Diffstat (limited to 'roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh')
-rwxr-xr-x | roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh b/roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh index 691fa32f3..5a187710b 100755 --- a/roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh +++ b/roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh @@ -8,10 +8,12 @@ # a pod would fail. # # To use this, -# Drop this script in /etc/NetworkManager/dispatcher.d/ -# systemctl restart NetworkManager -# Configure node-config.yaml to set dnsIP: to the ip address of this -# node +# - If this host is also a master, reconfigure master dnsConfig to listen on +# 8053 to avoid conflicts on port 53 and open port 8053 in the firewall +# - Drop this script in /etc/NetworkManager/dispatcher.d/ +# - systemctl restart NetworkManager +# - Configure node-config.yaml to set dnsIP: to the ip address of this +# node # # Test it: # host kubernetes.default.svc.cluster.local @@ -31,7 +33,8 @@ if [[ $2 =~ ^(up|dhcp4-change)$ ]]; then def_route=$(/sbin/ip route list match 0.0.0.0/0 | awk '{print $3 }') def_route_int=$(/sbin/ip route get to ${def_route} | awk '{print $3}') def_route_ip=$(/sbin/ip route get to ${def_route} | awk '{print $5}') - if [[ ${DEVICE_IFACE} == ${def_route_int} ]]; then + if [[ ${DEVICE_IFACE} == ${def_route_int} && \ + -n "${IP4_NAMESERVERS}" ]]; then if [ ! -f /etc/dnsmasq.d/origin-dns.conf ]; then cat << EOF > /etc/dnsmasq.d/origin-dns.conf strict-order @@ -42,13 +45,18 @@ server=/30.172.in-addr.arpa/172.30.0.1 EOF fi # zero out our upstream servers list and feed it into dnsmasq - echo '' > /etc/dnsmasq.d/origin-upstream-dns.conf - for ns in ${DHCP4_DOMAIN_NAME_SERVERS}; do - echo "server=${ns}" >> /etc/dnsmasq.d/origin-upstream-dns.conf + echo -n > /etc/dnsmasq.d/origin-upstream-dns.conf + for ns in ${IP4_NAMESERVERS}; do + if [[ ! -z $ns ]]; then + echo "server=${ns}" >> /etc/dnsmasq.d/origin-upstream-dns.conf + fi done systemctl restart dnsmasq - sed -i 's/^nameserver.*$/nameserver '"${def_route_ip}"'/g' /etc/resolv.conf - echo "# nameserver updated by /etc/NetworkManager/dispatcher.d/99-origin-dns.sh" >> /etc/resolv.conf + sed -i '0,/^nameserver/ s/^nameserver.*$/nameserver '"${def_route_ip}"'/g' /etc/resolv.conf + + if ! grep -q '99-origin-dns.sh' /etc/resolv.conf; then + echo "# nameserver updated by /etc/NetworkManager/dispatcher.d/99-origin-dns.sh" >> /etc/resolv.conf + fi fi fi |