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--- diy_rfc2136_dyndns_with_bind [29.10.2013 14:01] – Pascal Suter
+++ diy_rfc2136_dyndns_with_bind [29.10.2013 14:27] – Pascal Suter
@@ Line 79: / Line 79: @@
 </code>
   * now use the script to add your first hostname. <code>./add_new_host myhost</code>if you did everything correctly (and if i described it all correctly) your client should now be able to update it's own dns entry with the key you received back from the script.
+===== script to remove hosts =====
+optionally you can also create a little script to remove hosts just as easily. create a file called remove_hosts.sh with the following contents<code>
+#!/bin/bash
+if [ -z "$1" -o "$1" == " " ]; then
+        echo "usage: remove_host.sh <hostname>"
+        echo "EXAMPLE: remove_host.sh myhost will remove myhost.dyn.mydomain.ch"
+        exit 1
+fi
+cd /etc/bind/dyn/
+hostname=${1}.dyn.mydomain.ch.
+echo "old keys.conf entry: "
+grep ${hostname} keys.conf
+echo "remove key for ${hostname}"
+cat named.conf | sed -e "/^\t\tkey ${hostname}.*$/d" | tee named.conf > /dev/null
+cat keys.conf | sed -e "/^key ${hostname}.*$/d" | tee keys.conf > /dev/null
+echo "reload bind";
+/etc/init.d/bind9 reload
+echo "currently active hosts:"
+grep "key " named.conf | awk '{ print $2; }' | tr -d ";"
+</code>
+make it executable and run it to remove hotsts. **warning** make a backup of your keys.conf and your named.conf file before testing this :)
+  ./remove_host.sh myhost