diff options
Diffstat (limited to 'server/bin/setserveraddr3')
-rwxr-xr-x | server/bin/setserveraddr3 | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/server/bin/setserveraddr3 b/server/bin/setserveraddr3 new file mode 100755 index 00000000..a979595f --- /dev/null +++ b/server/bin/setserveraddr3 @@ -0,0 +1,115 @@ +#!/bin/bash + +#/** +# setserveraddr {str_ipaddress | str_netiface} +#@file setserveraddr +#@brief Command the modifies configuration files to assign the default network interface. +#@param str_ipaddress IP address assigned to a network interface +#@param str_netiface network interface name defined by the operating system. +#@version Initial version. +#@author Ramón M. Gómez - ETSII Univ. Sevilla +#@date 2011-01-25 +#@version 1.0.5 - Regenerate configuration files. +#@author Ramón M. Gómez - ETSII Univ. Sevilla +#@date 2014-06-06 +#@version 1.1.1 - Updating menu URLs, PXE files, and repository API key. +#@author Ramón M. Gómez - ETSII Univ. Sevilla +#@date 2018-11-15 +#*/ ## + + +# Variables. +PROG="$(basename "$0")" +OPENGNSYS=/opt/opengnsys +PXEDIR=$OPENGNSYS/tftpboot/menu.lst +CONFIGFILE=$OPENGNSYS/etc/opengnsys.json + +# Checking parameters. +if [ $# -ne 1 ]; then + echo "$PROG: Incorrect operand. Format: $PROG ipaddress|netiface" >&2 + exit 1 +fi +if [ "$USER" != "root" ]; then + echo "$PROG: Need to be root." >&2 + exit 1 +fi + +# Showing warning to inform that initiated clients may hang. +read -rp "WARNING: initiated clients can hang. Continue? (y/n): " ANSWER +if [ "${ANSWER,,}" != "y" ]; then + echo "Operation canceled." + exit 0 +fi + +# Detecting network interfaces. +DEVICES=$(ip -o link show up | awk -F: '$2!~/lo/ {print $2}') +for DEV in $DEVICES; do + # If the network interface is found, get its IP address. + IP=$(ip -o addr show dev "$DEV" | awk '$3~/inet$/ {sub (/\/.*/, ""); print ($4)}') + if [ "$DEV" == "$1" ] || [ "$IP" == "$1" ]; then + SERVERIP="$IP" + SERVERDEV="$DEV" + fi +done + +# Checking if IP address has been detected. +if [ -n "$SERVERIP" ]; then + # Temporary files. + tmpfile=$(mktemp /tmp/og.XXXXX) + trap "rm -f $tmpfile" 1 2 3 6 9 15 + + # Checking whether the DHCP settings need to be changed. + CHANGE=0 + for f in /etc/{dhcp,hcp3}/dhcpd.conf; do + if [ -f $f ]; then + # Changing DHCP "next-server" parameter. + file="${f/./-$SERVERDEV.}" + sed -e "s/next-server.*/next-server $SERVERIP;/" \ + -e "s/option routers ;/option routers ${SERVERIP%.*}.1;/" $file >$tmpfile + # Copying and linking file if there are changes. + if [ ! $f -ef $file ] || ! diff -q $tmpfile $file &>/dev/null; then + mv $tmpfile $file + chmod 644 $file + ln -f $file $f + CHANGE=1 + fi + fi + done + # Restarting DHCP service if its configuration has changed. + if [ $CHANGE == 1 ]; then + for f in /etc/init.d/{isc-dhcp-server,dhcp3-server,dhcpd}; do + [ -x $f ] && $f restart + done + else + echo "DHCP configuration has not changed." + fi + + OLDSERVERIP=$(jq -r .server.ip $CONFIGFILE) + if [ "$SERVERIP" != "$OLDSERVERIP" ]; then + # Updating configuration file. + jq ".server.ip=\"$SERVERIP\"" $CONFIGFILE | sponge $CONFIGFILE + # Updating all PXE files. + find $PXEDIR -name "01-*" -exec sed -i -e "s/$OLDSERVERIP/$SERVERIP/g" {} \; + # Showing manual task to do after execution. + cat << EOT +Default server interface set to: $SERVERDEV ($SERVERIP) + +Manual tasks: +- Check DHCP configuration file and restart service, if needed. +- Check PXE files. +- Log-in as Web Console user: + - Check menu URLs. +EOT + else + # Showing message if nothing changes. + echo "Default interface has not changed: $1" + fi +else + # Error if network interface is not found. + echo "$PROG: Network device not found. Format: $PROG ipaddress|netiface" >&2 + exit 1 +fi + +# Removing temporary file. +rm -f $tmpfile + |