diff options
Diffstat (limited to 'roles')
| -rwxr-xr-x | roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh | 65 |
1 files changed, 34 insertions, 31 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 4aab8f2e9..61d2a5b51 100755 --- a/roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh +++ b/roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh @@ -46,9 +46,7 @@ if [[ $2 =~ ^(up|dhcp4-change|dhcp6-change)$ ]]; 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} == ${def_route_int} && \ - -n "${IP4_NAMESERVERS}" && \ - "${IP4_NAMESERVERS}" != "${def_route_ip}" ]]; then + if [[ ${DEVICE_IFACE} == ${def_route_int} ]]; then if [ ! -f /etc/dnsmasq.d/origin-dns.conf ]; then cat << EOF > /etc/dnsmasq.d/origin-dns.conf no-resolv @@ -61,35 +59,40 @@ EOF NEEDS_RESTART=1 fi - ###################################################################### - # Write out default nameservers for /etc/dnsmasq.d/origin-upstream-dns.conf - # and /etc/origin/node/resolv.conf in their respective formats - for ns in ${IP4_NAMESERVERS}; do - if [[ ! -z $ns ]]; then - echo "server=${ns}" >> $UPSTREAM_DNS_TMP - echo "nameserver ${ns}" >> $NEW_NODE_RESOLV_CONF + # If network manager doesn't know about the nameservers then the best + # we can do is grab them from /etc/resolv.conf but only if we've got no + # watermark + if ! grep -q '99-origin-dns.sh' /etc/resolv.conf; then + if [[ -z "${IP4_NAMESERVERS}" || "${IP4_NAMESERVERS}" == "${def_route_ip}" ]]; then + IP4_NAMESERVERS=`grep '^nameserver ' /etc/resolv.conf | awk '{ print $2 }'` + fi + ###################################################################### + # Write out default nameservers for /etc/dnsmasq.d/origin-upstream-dns.conf + # and /etc/origin/node/resolv.conf in their respective formats + for ns in ${IP4_NAMESERVERS}; do + if [[ ! -z $ns ]]; then + echo "server=${ns}" >> $UPSTREAM_DNS_TMP + echo "nameserver ${ns}" >> $NEW_NODE_RESOLV_CONF + fi + done + # Sort it in case DNS servers arrived in a different order + sort $UPSTREAM_DNS_TMP > $UPSTREAM_DNS_TMP_SORTED + sort $UPSTREAM_DNS > $CURRENT_UPSTREAM_DNS_SORTED + # Compare to the current config file (sorted) + NEW_DNS_SUM=`md5sum ${UPSTREAM_DNS_TMP_SORTED} | awk '{print $1}'` + CURRENT_DNS_SUM=`md5sum ${CURRENT_UPSTREAM_DNS_SORTED} | awk '{print $1}'` + if [ "${NEW_DNS_SUM}" != "${CURRENT_DNS_SUM}" ]; then + # DNS has changed, copy the temp file to the proper location (-Z + # sets default selinux context) and set the restart flag + cp -Z $UPSTREAM_DNS_TMP $UPSTREAM_DNS + NEEDS_RESTART=1 + fi + # compare /etc/origin/node/resolv.conf checksum and replace it if different + NEW_NODE_RESOLV_CONF_MD5=`md5sum ${NEW_NODE_RESOLV_CONF}` + OLD_NODE_RESOLV_CONF_MD5=`md5sum /etc/origin/node/resolv.conf` + if [ "${NEW_NODE_RESOLV_CONF_MD5}" != "${OLD_NODE_RESOLV_CONF_MD5}" ]; then + cp -Z $NEW_NODE_RESOLV_CONF /etc/origin/node/resolv.conf fi - done - - # Sort it in case DNS servers arrived in a different order - sort $UPSTREAM_DNS_TMP > $UPSTREAM_DNS_TMP_SORTED - sort $UPSTREAM_DNS > $CURRENT_UPSTREAM_DNS_SORTED - - # Compare to the current config file (sorted) - NEW_DNS_SUM=`md5sum ${UPSTREAM_DNS_TMP_SORTED} | awk '{print $1}'` - CURRENT_DNS_SUM=`md5sum ${CURRENT_UPSTREAM_DNS_SORTED} | awk '{print $1}'` - if [ "${NEW_DNS_SUM}" != "${CURRENT_DNS_SUM}" ]; then - # DNS has changed, copy the temp file to the proper location (-Z - # sets default selinux context) and set the restart flag - cp -Z $UPSTREAM_DNS_TMP $UPSTREAM_DNS - NEEDS_RESTART=1 - fi - - # compare /etc/origin/node/resolv.conf checksum and replace it if different - NEW_NODE_RESOLV_CONF_MD5=`md5sum ${NEW_NODE_RESOLV_CONF}` - OLD_NODE_RESOLV_CONF_MD5=`md5sum /etc/origin/node/resolv.conf` - if [ "${NEW_NODE_RESOLV_CONF_MD5}" != "${OLD_NODE_RESOLV_CONF_MD5}" ]; then - cp -Z $NEW_NODE_RESOLV_CONF /etc/origin/node/resolv.conf fi if ! `systemctl -q is-active dnsmasq.service`; then |