#!/bin/bash
-set -e
-
# Configuration Fallbacks. All can(must for some of them) be overwritten by /etc/default/snf-network
TTL=300
# the bind server IP/FQDN
MAC2EUI64="/usr/bin/mac2eui64"
source /etc/default/snf-network
+source /usr/lib/snf-network/common.sh
-if [ -z "$SERVER" -o -z "$FZONE" -o -z "$KEYFILE" ]; then
+if [ -z "$SERVER" -o -z "$FZONE" -o ! -e "$KEYFILE" ]; then
exit 0
fi
-update () {
- local ZONE=$1
- local action="$2"
- nsupdate -k $KEYFILE > /dev/null << EOF
- server $SERVER
- zone $ZONE
- $action
- send
-EOF
-}
-
-
-# ommit zone statement
-# nsupdate will attempt determine the correct zone to update based on the rest of the input
-send_command () {
-
- local command="$1"
- nsupdate -k $KEYFILE > /dev/null << EOF
- server $SERVER
- $command
- send
-EOF
-
-}
-
-
-addremove_arecord () {
-
- local action=$1
- local command=
- if [ -n "$IP" ]; then
- command="update $action $GANETI_INSTANCE_NAME.$FZONE $TTL A $IP"
- send_command "$command"
- fi
- if [ -n "$EUI64" ]; then
- command="update $action $GANETI_INSTANCE_NAME.$FZONE $TTL AAAA $EUI64"
- send_command "$command"
- fi
-
-}
-
-addremove_ptrrecord () {
-
- local action=$1
- local command=
- if [ -n "$IP" ]; then
- command="update $action $RLPART.$RZONE. $TTL PTR $GANETI_INSTANCE_NAME.$FZONE"
- send_command "$command"
- fi
- if [ -n "$EUI64" ]; then
- command="update $action $R6LPART.$R6ZONE. $TTL PTR $GANETI_INSTANCE_NAME.$FZONE"
- send_command "$command"
- fi
-
-}
-
-
-# first argument is an eui64 (IPv6)
-# sets GLOBAL args R6REC, R6ZONE, R6LPART
-# lets assume eui64=eui64=2001:648:2ffc:1::1
-# the following commands produce:
-# R6REC=1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.c.f.f.2.8.4.6.0.1.0.0.2.ip6.arpa
-# R6ZONE=1.0.0.0.c.f.f.2.8.4.6.0.1.0.0.2.ip6.arpa
-# R6LPART=1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
-get_rev6_info () {
-
- local eui64=$1
- if [ -z "$eui64" ]; then
- R6REC= ; R6ZONE= ; R6LPART= ;
- else
- R6REC=$(host $eui64 | egrep -o '([[:alnum:]]\.){32}ip6.arpa' )
- R6ZONE=$(echo $R6REC | awk -F. 'BEGIN{rpart="";} { for (i=32;i>16;i=i-1) rpart=$i "." rpart; } END{print rpart "ip6.arpa";}')
- R6LPART=$(echo $R6REC | awk -F. 'BEGIN{lpart="";} { for (i=16;i>0;i=i-1) lpart=$i "." lpart; } END{print lpart;}')
- fi
-
-}
-
-
-# first argument is an ipv4
-# sets args RZONE, RLPART
-# lets assume IP=203.0.113.1
-# RZONE="113.0.203.in-add.arpa"
-# RLPART="1"
-get_rev4_info () {
-
- local ip=$1
- if [ -z "$ip" ]; then
- RZONE= ; RLPART= ;
- else
- OLDIFS=$IFS
- IFS=". "
- set -- $ip
- a=$1 ; b=$2; c=$3; d=$4;
- IFS=$OLDIFS
- RZONE="$c.$b.$a.in-addr.arpa"
- RLPART="$d"
- fi
-
-}
-
-
update_dns () {
if [ "x$GANETI_OP_CODE" = "xOP_INSTANCE_CREATE" ]; then
- update_arecord add
- update_ptrrecord add
+ update_all add
elif [ "x$GANETI_OP_CODE" = "xOP_INSTANCE_REMOVE" ]; then
- update_arecord delete
- update_ptrrecord delete
+ update_all delete
elif [ "x$GANETI_OP_CODE" = "xOP_INSTANCE_RENAME" ]; then
- update_arecord delete
- update_ptrrecord delete
+ update_all delete
# Let's override a variable and add ourselves
GANETI_INSTANCE_NAME=$GANETI_INSTANCE_NEW_NAME
- update_arecord add
- update_ptrrecord add
+ update_all add
elif [ "x$GANETI_OP_CODE" = "xOP_INSTANCE_STARTUP" ]; then
- update_arecord add
- update_ptrrecord add
+ update_all add
elif [ "x$GANETI_OP_CODE" = "xOP_INSTANCE_SHUTDOWN" ]; then
- update_arecord delete
- update_ptrrecord delete
+ update_all delete
elif [ "x$GANETI_OP_CODE" = "xOP_INSTANCE_REBOOT" ]; then
- update_arecord add
- update_ptrrecord add
+ update_all add
elif [ "x$GANETI_OP_CODE" = "xOP_INSTANCE_SET_PARAMS" ]; then
- update_arecord add
- update_ptrrecord add
+ update_all add
fi
}
if [ "x$GANETI_OP_CODE" = "xOP_INSTANCE_SET_PARAMS" ]; then
query_dns
# This should remove the A, AAAA, CNAME entries
- run_action "update delete $GANETI_INSTANCE_NAME.$FZONE"
+ send_command "update delete $GANETI_INSTANCE_NAME.$FZONE"
for ip in $HOST_IP_ALL; do
get_rev4_info $ip
# This should remove the IPv4 reverse entry
- run_action "update delete $RLPART.$RZONE"
+ send_command "update delete $RLPART.$RZONE"
done
for ip6 in $HOST_IP6_ALL; do
get_rev6_info $ip6
# This should remove the IPv6 reverse entry
- run_action "update delete $R6LPART$R6ZONE."
+ send_command "update delete $R6LPART$R6ZONE."
done
fi
}
-# Because we do not have IPv6 value in our environment
-# we caclulate it based on the NIC's MAC and the IPv6 subnet (if any)
-# first argument MAC second IPv6 subnet
-# Changes global value EUI64
-get_eui64 () {
-
- local mac=$1
- local prefix=$2
-
- if [ -z "$prefix" ]; then
- EUI64=
- else
- EUI64=$($MAC2EUI64 $MAC $SUBNET6)
- fi
-
-}
-
-
# Main starts here
+
# Exit if we do not have instance name.
# It should be exported to hooks for instance related opcodes.
-if [ -z "$GANETI_INSTNACE_NAME" ]; then
+if [ -z "$GANETI_INSTANCE_NAME" ]; then
exit 0
fi
get_rev4_info "$IP"
get_eui64 "$MAC" "$SUBNET6"
get_rev6_info "$EUI64"
+ hooks-log dnshook "update dns for $GANETI_INSTANCE_NAME $IP $EUI64"
update_dns
;;
projects / snf-network / blobdiff