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#!/bin/bash
#-----------------------------------------------------------------------------
#
# /usr/local/sbin/adcn
# ftp://ftp.sci.usq.edu.au/pub/jacek/beowulf-utils
#
# Add Disk-less Client Node
#
# Version : 0.0.5
#
# Date : 5 September 1998
#
# Author : Jacek Radajewski
# jacek@usq.edu.au
#
# Purpose : This script adds a new node to a disk-less-client Beowulf cluster.
# adcn assumes Red Hat 5.0 or 5.1 and might not work on other versions
# of Red Hat or other distributions of Linux . adcn uses the /tftpboot/Template
# directory to create NFS root file system for the client node.
# /tftpboot/Template should be created with the setup_template script,
# which can be found at ftp://ftp.sci.usq.edu.au/pub/jacek/beowulf-utils
#
# Command line options :
#
# -f
# Force installation even if unknown Linux release. adcn normally checks for
# for version of Red Hat Linux, and if the version number is not 5.0 or 5.1
# then adcn will give up. adcn will also give up if the Linux distribution
# is not Red Hat. This option ignores release and version checking.
#
# -i ip address
# IP address of the new disk-less client node.
#
# -m hardware address
# MAC (hardware) address of the new disk-less client node. -m is ignored when
# used together with the -l option.
#
# -l interface
# listen to RARP requests on interface and use the 'sniffed' address
# as the hardware address of the new disk-less client node.
# This overides -m option
#
# -c client name
# hostname of the new disk-less client node.
# You must specify first name only, not the FQDN.
# For example node1 and NOT node1.beowulf.my.domain
#
# -d domain name
# This is optional and if not specified
# the DNS domain of the server will be used.
#
# -n netmask address of the new node. Default value is used if this is not specified
#
# -g gateway address. Server's IP is used as the default value if gateway is not
# specified. Using
#
# -N network address
#
# -b broadcast address
#
# -s list supported distributions and version of Linux
#
# -h help
#
#-----------------------------------------------------------------------------
show_help () {
echo -e "adcn options\n"
echo "[-f] : force installation even if adcn does not support this"
echo " distribution of Linux or version of Red Hat Linux"
echo " -i ip_address : IP Addrees of the disk-less client node"
echo "[-m mac_address] : MAC or hardware address of the disk-less client node"
echo " -l interface : Listen for RARP request on the interface and use the sniffed"
echo " hardware address as the hardware address of client node"
echo " If -m is specified with this option, given MAC address is"
echo " ignored. (not implemented)"
echo " -c client_name : Host name of the disk-less client node. This must the first"
echo " name of the node and not the fully qualified domain name"
echo "[-d domain_name] : Domain name. If not specified servers domain will be used."
echo "[-n netmask] : Netmask address. If not specified the default netmask"
echo " 255.255.255.0 will be used. For clusters with more than 255"
echo " nodes this should be changed to 255.255.0.0"
echo "[-g gateway] : Default gateway for the disk-less client node. If not"
echo " specified, server node is used as the default gateway"
echo "[-N net_address] : Network address"
echo "[-b broadcast] : Broadcast address"
echo "[-h] : This help message"
echo "[-s] : List supported distributions and versions of Linux"
exit 0
}
# set few default values before processing command line arguments
export FORCE=false
export LISTEN=false
export SERVER=$(/bin/hostname)
export DOMAIN=$(/bin/dnsdomainname)
export HOST=none
export IPADDR=none
export MACADDR=none
export NETMASK=255.255.255.0
export BROADCAST=10.0.0.255
export NETWORK=10.0.0.0
export GATEWAY=10.0.0.1
# process command line options
while getopts ":fhd:i:m:c:n:g:N:b:l:" opt; do
case $opt in
f ) export FORCE=true;;
d ) export DOMAIN=$OPTARG;;
i ) export IPADDR=$OPTARG;;
m ) export MACADDR=$OPTARG;;
c ) export HOST=$OPTARG;;
n ) export NETMASK=$OPTARG;;
g ) export GATEWAY=$OPTARG;;
N ) export NETWORK=$OPTARG;;
b ) export BROADCAST=$OPTARG;;
l ) export L_INTERFACE=$OPTARG
export LISTEN=true;;
h ) show_help;;
\? ) echo 'adcn -h for help'
exit 1
esac
done
# check if everything is set
if [ $HOST = 'none' ] || [ $IPADDR = 'none' ] || [ $MACADDR = 'none' ] ; then
echo 'adcn -h for help'
exit 1
fi
# make sure that the host name is not a FQDN
echo $HOST | grep "\." > /dev/null 2>&1
if [ $? = 0 ] ; then
echo "Host name cannot be a fully qualified domain name. Use -d to set domain."
exit 1
fi
# simple and incomplete check of the MAC address
if [ $(echo $MACADDR | cut -f 6 -d ":")test = "test" ] ; then
echo "$MACADDR is not a valid MAC address"
exit 1
fi
echo "Adding $HOST.$DOMAIN - IP- $IPADDR - MAC- $MACADDR to the cluster ... "
# check linux release but not if forced install
# at this stage only check for Red Hat 5.0
if [ $FORCE = 'false' ] ; then
if [ -f /etc/redhat-release ] ; then
cat /etc/redhat-release | grep "Hurricane" > /dev/null 2>&1
if [ $? = 0 ] ; then
export REDHAT=Hurricane
else
echo "This script might not work with Red Hat Linux $(cat /etc/redhat-release)"
echo "Use -f to force installation"
exit 1
fi
else
echo "Can't find /etc/redhat-release file."
echo "Not a Red Hat Linux distribution. Giving up"
echo "Use -f to force installation. Good luck."
exit 1
fi
fi
# the location of our template
# you must create template before you run this script !!!
# use the setup_template script to create the template
# and then customize it for your needs
export TEMPLATE_DIR=/tftpboot/Template
export DEST_DIR=/tftpboot/$IPADDR
#umask 022
#-----------------------------------------------------------------------------
# check if this IP address already exists
if [ -f $DEST_DIR ] ; then
echo "$DEST_DIR entry exists. Giving up."
exit 1
fi
# do few other checks before going ahead
if [ ! -d $TEMPLATE_DIR ] ; then
echo "Cannot find Template directory $TEMPLATE_DIR. Giving up."
exit 1
fi
#--------------------------------------------------------------------
# create the root directory for new node
/bin/mkdir /tftpboot/$IPADDR
# we also want the name of the new node to be a link to the real (IP address)
# directory
/bin/ln -sf /tftpboot/$IPADDR /tftpboot/$HOST
/bin/ln -sf /tftpboot/$IPADDR /tftpboot/$HOST.$DOMAIN
# create sub directories
/bin/mkdir $DEST_DIR/bin
/bin/mkdir $DEST_DIR/boot
/bin/mkdir $DEST_DIR/dev
/bin/mkdir $DEST_DIR/etc
/bin/mkdir $DEST_DIR/home
/bin/mkdir $DEST_DIR/lib
/bin/mkdir $DEST_DIR/mnt
/bin/mkdir $DEST_DIR/proc
/bin/mkdir $DEST_DIR/root
/bin/mkdir $DEST_DIR/sbin
/bin/mkdir $DEST_DIR/tmp
/bin/mkdir $DEST_DIR/usr
/bin/mkdir $DEST_DIR/var
/bin/chmod 777 $DEST_DIR/tmp
echo "Building NFS root file system ..."
#-----------------------------------------------------------------------------
# we now create the files in all of the directories
# we make hard links to files in our Template directory
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# /bin
echo -n " /bin "
cd $TEMPLATE_DIR/bin
for directory in $(/usr/bin/find . -not -name '.' -type d) ; do
/bin/mkdir $DEST_DIR/bin/$directory
done
for file in $(/usr/bin/find . -type f -maxdepth 1 -follow) ; do
/bin/ln $TEMPLATE_DIR/bin/$file $DEST_DIR/bin/$file
done
#-----------------------------------------------------------------------------
# /boot
echo -n " /boot "
cd $TEMPLATE_DIR/boot
for directory in $(/usr/bin/find . -not -name '.' -type d) ; do
/bin/mkdir $DEST_DIR/boot/$directory
done
for file in $(/usr/bin/find . -type f -maxdepth 1) ; do
/bin/ln $TEMPLATE_DIR/boot/$file $DEST_DIR/boot/$file
done
#-----------------------------------------------------------------------------
# /dev
#-----------------------------------------------------------------------------
echo -n " /dev "
cd $TEMPLATE_DIR/dev
# Linking of devices is still very shaky. There are problems
# with linking /dev/fd, /dev/stdin, /dev/stderr, and /dev/stdout
# directories. These are done manually.
/bin/ln -sf ../proc/self/fd $DEST_DIR/dev/fd
/bin/ln -f $TEMPLATE_DIR/dev/stdin $DEST_DIR/dev/stdin
/bin/ln -f $TEMPLATE_DIR/dev/stdout $DEST_DIR/dev/stdout
/bin/ln -f $TEMPLATE_DIR/dev/stderr $DEST_DIR/dev/stderr
for directory in $(/usr/bin/find . -not -name '.' -type d) ; do
/bin/mkdir $DEST_DIR/dev/$directory
done
# link files block, character, then normal files (e.g. MAKEDEV)
for file in $(/usr/bin/find . -type c -follow -mount) ; do
/bin/ln -fd $TEMPLATE_DIR/dev/$file $DEST_DIR/dev/$file
done
for file in $(/usr/bin/find . -type b -follow -mount) ; do
/bin/ln -fd $TEMPLATE_DIR/dev/$file $DEST_DIR/dev/$file
done
for file in $(/usr/bin/find . -type f -follow -mount) ; do
/bin/ln -fd $TEMPLATE_DIR/dev/$file $DEST_DIR/dev/$file 2>/dev/null
done
#-----------------------------------------------------------------------------
# /etc
#-----------------------------------------------------------------------------
echo -n " /etc "
cd $TEMPLATE_DIR/etc
for directory in $(/usr/bin/find . -not -name '.' -type d) ; do
/bin/mkdir $DEST_DIR/etc/$directory
done
for file in $(/usr/bin/find . -type f -follow) ; do
/bin/ln -f $TEMPLATE_DIR/etc/$file $DEST_DIR/etc/$file
done
#-----------------------------------------------------------------------------
# /lib
#-----------------------------------------------------------------------------
echo -n " /lib "
cd $TEMPLATE_DIR/lib
for file in $(/usr/bin/find . -type f -follow -maxdepth 1) ; do
/bin/ln -f $TEMPLATE_DIR/lib/$file $DEST_DIR/lib/$file
done
#-----------------------------------------------------------------------------
# /root
#-----------------------------------------------------------------------------
echo -n " /root "
cd $TEMPLATE_DIR/root
for file in $(/usr/bin/find . -type f -maxdepth 1) ; do
/bin/ln -f $TEMPLATE_DIR/root/$file $DEST_DIR/root/$file
done
#-----------------------------------------------------------------------------
# /sbin
#-----------------------------------------------------------------------------
echo -n " /sbin "
cd $TEMPLATE_DIR/sbin
for directory in $(/usr/bin/find . -not -name '.' -type d -follow) ; do
/bin/mkdir $DEST_DIR/sbin/$directory
done
for file in $(/usr/bin/find . -type f -follow) ; do
/bin/ln -f $TEMPLATE_DIR/sbin/$file $DEST_DIR/sbin/$file
done
#-----------------------------------------------------------------------------
# /var
#-----------------------------------------------------------------------------
echo -n " /var "
cd $TEMPLATE_DIR/var
for directory in $(/usr/bin/find . -not -name '.' -type d -follow) ; do
/bin/mkdir $DEST_DIR/var/$directory
done
for file in $(/usr/bin/find . -type f -follow -mount) ; do
/bin/ln $TEMPLATE_DIR/var/$file $DEST_DIR/var/$file
done
#-----------------------------------------------------------------------------
# Now we create network configuration files for the node
# First we remove all existing configuration scripts
#-----------------------------------------------------------------------------
echo -e "\nCreating network scripts ..."
# clean up ...
/bin/rm -f $DEST_DIR/etc/sysconfig/network
/bin/rm -f $DEST_DIR/etc/sysconfig/network-scripts/ifcfg-eth*
# /etc/HOSTNAME
echo "$HOST.$DOMAIN" > $DEST_DIR/etc/HOSTNAME
# create client's /etc/sysconfig/network
echo "NETWORKING=yes" \
>> $DEST_DIR/etc/sysconfig/network
echo "HOSTNAME=$HOST.$DOMAIN" \
>> $DEST_DIR/etc/sysconfig/network
echo "DOMAINNAME=$DOMAIN" \
>> $DEST_DIR/etc/sysconfig/network
echo "GATEWAY=$GATEWAY" \
>> $DEST_DIR/etc/sysconfig/network
echo "GATEWAYDEV=eth0" \
>> $DEST_DIR/etc/sysconfig/network
#-----------------------------------------------------------------------------
# create client's /etc/sysconfig/network-scripts/ifcfg-eth0
# if you have more than one interface per node you will have
# to add/change script
#-----------------------------------------------------------------------------
echo "DEVICE=eth0" \
>> $DEST_DIR/etc/sysconfig/network-scripts/ifcfg-eth0
echo "IPADDR=$IPADDR" \
>> $DEST_DIR/etc/sysconfig/network-scripts/ifcfg-eth0
echo "NETMASK=$NETMASK" \
>> $DEST_DIR/etc/sysconfig/network-scripts/ifcfg-eth0
echo "NETWORK=$NETWORK" \
>> $DEST_DIR/etc/sysconfig/network-scripts/ifcfg-eth0
echo "BROADCAST=$BROADCAST" \
>> $DEST_DIR/etc/sysconfig/network-scripts/ifcfg-eth0
echo "ONBOOT=yes" \
>> $DEST_DIR/etc/sysconfig/network-scripts/ifcfg-eth0
echo "BOOTPROTO=none" \
>> $DEST_DIR/etc/sysconfig/network-scripts/ifcfg-eth0
#-----------------------------------------------------------------------------
# add the RARP entry
# Our server will use this to anwser client's RARP request and tell it
# it's IP address
#-----------------------------------------------------------------------------
/sbin/rarp -s $HOST $MACADDR
echo "/sbin/rarp -s $HOST $MACADDR" >> /etc/rc.d/init.d/rarp
#-----------------------------------------------------------------------------
# add the new machine to /etc/exports
#-----------------------------------------------------------------------------
echo "/tftpboot/$IPADDR/ $HOST.$DOMAIN (rw,no_all_squash,no_root_squash)" >> /etc/exports
echo "/usr $HOST.$DOMAIN (rw,no_all_squash,no_root_squash)" >> /etc/exports
echo "/bin $HOST.$DOMAIN (rw,no_all_squash,no_root_squash)" >> /etc/exports
echo "/sbin $HOST.$DOMAIN (rw,no_all_squash,no_root_squash)" >> /etc/exports
echo "/lib $HOST.$DOMAIN (rw,no_all_squash,no_root_squash)" >> /etc/exports
echo "/home $HOST.$DOMAIN (rw,no_all_squash,no_root_squash)" >> /etc/exports
# restart the nfsd and mountd daemons on the server
/usr/bin/killall -HUP rpc.nfsd
/usr/bin/killall -HUP rpc.mountd
# create /etc/fstab entry
/bin/rm -f $DEST_DIR/etc/fstab
echo "$SERVER:/tftpboot/$IPADDR / nfs hard,intr,rw" >> $DEST_DIR/etc/fstab
echo "$SERVER:/usr /usr nfs soft,intr,rw" >> $DEST_DIR/etc/fstab
echo "$SERVER:/bin /bin nfs soft,intr,rw" >> $DEST_DIR/etc/fstab
echo "$SERVER:/sbin /sbin nfs soft,intr,rw" >> $DEST_DIR/etc/fstab
echo "$SERVER:/lib /lib nfs soft,intr,rw" >> $DEST_DIR/etc/fstab
echo "$SERVER:/home /home nfs hard,intr,rw" >> $DEST_DIR/etc/fstab
/bin/rm -f $DEST_DIR/etc/mtab
/bin/touch $DEST_DIR/etc/mtab
# some other files have to be unique for each client
/bin/rm -f $DEST_DIR/var/log/wtmp*
/bin/touch $DEST_DIR/var/log/wtmp
/bin/rm -f $DEST_DIR/var/log/lastlog*
/bin/touch $DEST_DIR/var/log/lastlog
echo "Done."
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