diff options
Diffstat (limited to 'roles')
| -rwxr-xr-x | roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh | 29 |
1 files changed, 18 insertions, 11 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 924226d09..4aab8f2e9 100755 --- a/roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh +++ b/roles/openshift_node_dnsmasq/files/networkmanager/99-origin-dns.sh @@ -37,6 +37,8 @@ if [[ $2 =~ ^(up|dhcp4-change|dhcp6-change)$ ]]; then UPSTREAM_DNS_TMP_SORTED=`mktemp` CURRENT_UPSTREAM_DNS_SORTED=`mktemp` NEW_RESOLV_CONF=`mktemp` + NEW_NODE_RESOLV_CONF=`mktemp` + ###################################################################### # couldn't find an existing method to determine if the interface owns the @@ -60,12 +62,14 @@ EOF fi ###################################################################### - # Generate a new origin dns config file + # 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}" + echo "server=${ns}" >> $UPSTREAM_DNS_TMP + echo "nameserver ${ns}" >> $NEW_NODE_RESOLV_CONF fi - done > $UPSTREAM_DNS_TMP + done # Sort it in case DNS servers arrived in a different order sort $UPSTREAM_DNS_TMP > $UPSTREAM_DNS_TMP_SORTED @@ -74,7 +78,6 @@ EOF # 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 @@ -82,6 +85,13 @@ EOF 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 NEEDS_RESTART=1 fi @@ -91,17 +101,14 @@ EOF systemctl restart dnsmasq fi - # Only if dnsmasq is running properly make it our only nameserver, copy - # original resolv.conf to /etc/origin/node/resolv.conf for node service to - # bypass dnsmasq + # Only if dnsmasq is running properly make it our only nameserver and place + # a watermark on /etc/resolv.conf if `systemctl -q is-active dnsmasq.service`; then - if ! grep -q '99-origin-dns.sh' ${NEW_RESOLV_CONF}; then + if ! grep -q '99-origin-dns.sh' /etc/resolv.conf; then echo "# nameserver updated by /etc/NetworkManager/dispatcher.d/99-origin-dns.sh" >> ${NEW_RESOLV_CONF} - cp /etc/resolv.conf /etc/origin/node/resolv.conf fi - sed -e '/^nameserver.*$/d' /etc/resolv.conf > ${NEW_RESOLV_CONF} + sed -e '/^nameserver.*$/d' /etc/resolv.conf >> ${NEW_RESOLV_CONF} echo "nameserver "${def_route_ip}"" >> ${NEW_RESOLV_CONF} - if ! grep -q 'search.*cluster.local' ${NEW_RESOLV_CONF}; then sed -i '/^search/ s/$/ cluster.local/' ${NEW_RESOLV_CONF} fi |