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+#!/bin/sh
+# Start/stop/restart the BIND name server daemon (named).
+
+
+# Start bind. In the past it was more secure to run BIND as a non-root
+# user (for example, with '-u daemon'), but the modern version of BIND
+# knows how to use the kernel's capability mechanism to drop all root
+# privileges except the ability to bind() to a privileged port and set
+# process resource limits, so -u should not be needed. If you wish to
+# use it anyway, chown the /var/run/named and /var/named directories to
+# the non-root user. The command options can be set like this in
+# /etc/default/named :
+# NAMED_OPTIONS="-u daemon"
+# So you will not have to edit this script.
+
+# You might also consider running BIND in a "chroot jail",
+# a discussion of which may be found in
+# /usr/doc/Linux-HOWTOs/Chroot-BIND-HOWTO.
+
+# One last note: rndc has a lot of other nice features that it is not
+# within the scope of this start/stop/restart script to support.
+# For more details, see "man rndc" or just type "rndc" to see the options.
+
+# Load command defaults:
+if [ -f /etc/default/named ] ; then . /etc/default/named ; fi
+if [ -f /etc/default/rndc ] ; then . /etc/default/rndc ; fi
+
+# Sanity check. If /usr/sbin/named is missing then it
+# doesn't make much sense to try to run this script:
+if [ ! -x /usr/sbin/named ]; then
+ echo "/etc/rc.d/rc.bind: no /usr/sbin/named found (or not executable); cannot start."
+ exit 1
+fi
+
+# Start BIND. As many times as you like. ;-)
+# Seriously, don't run "rc.bind start" if BIND is already
+# running or you'll get more than one copy running.
+bind_start() {
+ if [ -x /usr/sbin/named ]; then
+ echo "Starting BIND: /usr/sbin/named $NAMED_OPTIONS"
+ /usr/sbin/named $NAMED_OPTIONS
+ sleep 1
+ fi
+ if ! ps axc | grep -q named ; then
+ echo "WARNING: named did not start."
+ echo "Attempting to start named again: /usr/sbin/named $NAMED_OPTIONS"
+ /usr/sbin/named $NAMED_OPTIONS
+ sleep 1
+ if ps axc | grep -q named ; then
+ echo "SUCCESS: named started."
+ else
+ echo "FAILED: Sorry, a second attempt to start named has also failed."
+ echo "There may be a configuration error that needs fixing. Good luck!"
+ fi
+ fi
+}
+
+# Stop all running copies of BIND (/usr/sbin/named):
+bind_stop() {
+ echo "Stopping BIND: /usr/sbin/rndc $RDNC_OPTIONS stop"
+ /usr/sbin/rndc $RDNC_OPTIONS stop
+ # A problem with using "/usr/sbin/rndc stop" is that if you
+ # managed to get multiple copies of named running it will
+ # only stop one of them and then can't stop the others even
+ # if you run it again. So, after doing things the nice way
+ # we'll do them the old-fashioned way. If you don't like
+ # it you can comment it out, but unless you have a lot of
+ # other programs you run called "named" this is unlikely
+ # to have any ill effects:
+ sleep 1
+ if ps axc | grep -q named ; then
+ echo "Using "killall named" on additional BIND processes..."
+ /bin/killall named 2> /dev/null
+ fi
+}
+
+# Reload BIND:
+bind_reload() {
+ /usr/sbin/rndc $RDNC_OPTIONS reload
+}
+
+# Restart BIND:
+bind_restart() {
+ bind_stop
+ bind_start
+}
+
+# Get BIND status:
+bind_status() {
+ /usr/sbin/rndc $RDNC_OPTIONS status
+}
+
+case "$1" in
+'start')
+ bind_start
+ ;;
+'stop')
+ bind_stop
+ ;;
+'reload')
+ bind_reload
+ ;;
+'restart')
+ bind_restart
+ ;;
+'status')
+ bind_status
+ ;;
+*)
+ echo "usage $0 start|stop|reload|restart|status"
+esac
+