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#!/bin/bash
# Copyright 2008 Eric Thibodeau <kyron@neuralbs.com>
# All rights reserved. Released under the GPL v2 license.
# This script is written so parts can be reused for liveCD mounting...eventually ;)
. /mnt/livecd/sbin/functions.sh
CONFDIR="/etc/gentoo"
CLUSTER_CONF="$CONFDIR/cluster.conf"
LDAP_CONF="$CONFDIR/ldap_auth.conf"
conf_error() {
eerror "CONFIG_OK is not set to 'yes' in $1"
eerror "Please edit ALL files in $(dirname $1)"
eerror "and re-run $0"
einfo "If there are some files in $(dirname $1)"
einfo "which don't need configuration, hid them with"
einfo "a '.' before the name of the file"
exit 1
}
aufs_mount() {
CDROOT=/mnt/livecd/
MKDIR=${CDROOT}/bin/mkdir
MODPROBE=${CDROOT}/sbin/modprobe
$MODPROBE aufs || eerror "Got $? while probing for aufs module!"
# Looping this simply because it should replace the current tmpfs mounting of the liveCD :P
for I in tftproot
do
einfo "Setting up AUFS mount for /$I"
${MKDIR} -p /mnt/aufs/$I /$I
mount -t tmpfs tmpfs_$I /mnt/aufs/$I
mount -n -t aufs -o br:/mnt/aufs/${I}=rw:/mnt/livecd/${I} aufs_mount /${I}
done
}
do_conf() {
. $1
shift
einfo "Calling $* "
$*
if [ $? != 0 ]; then
eerror "Call to $* did not return 0 errors."
ewarn "Look above this message for clues."
exit 1
fi
}
# This could have been inlined into do_conf but we would rather check configs _before_
# we do anything...we could be a little mode selective than $CONFDIR/* though
check_conf() {
einfo "Checking config files.."
for I in $CONFDIR/*.conf
do
. $I
[[ $CONFIG_OK == "yes" ]] || conf_error $I
done
}
# This function has to be called after the $CLUSTER_CONF file has been sourced
# Required external vars:
# CLUSTER_CONF:NFSROOT
config_ssh(){
KEY_NAME="node_dsa"
NETADDR="$(sipcalc ${CLUSTER_ETH} | egrep 'Network address' | cut -d- -f2)"
# The following is needed because $HOME is set to / on the livecd console for some reason
HDIR="/root"
pushd $PWD
einfo "Setting up passwordless ssh for root between master and the nodes"
mkdir -p $HDIR/.ssh/ $NFSROOT/root/.ssh/
cd $HDIR/.ssh/
ssh-keygen -t dsa -b 1024 -f $KEY_NAME -N ""
cat $KEY_NAME.pub >> $NFSROOT/root/.ssh/authorized_keys
cat >> $HDIR/.ssh/config <<-EOF
# Auto-generated by $0 to ease the use of passwordless logins for all users
# Although this approach is questionnable, it's also one of the only way
# to automate some of the master-node configuration/discovery process
# until an Avahi-style approach is implemented.
Host *.gentoo.local ${NETADDR%.[09]*}.* node*
IdentityFile $HDIR/.ssh/$KEY_NAME
StrictHostKeyChecking no
UserKnownHostsFile /dev/null
CheckHostIP no
Compression no
EOF
echo "# we don't use IPV6, the following setting removes undue delays that would be added" >> /etc/ssh/ssh_config
echo "AddressFamily inet" >> /etc/ssh/ssh_config
chmod 600 $HDIR/.ssh/* $NFSROOT/root/.ssh/*
chmod 700 $HDIR/.ssh $NFSROOT/root/.ssh
popd
}
####### Main #########
# Speed up the dev cycle by automating some tasks:
if [[ "$1" == "--test" ]]; then
ewarn
ewarn "Yeah...you know what you're doing right?"
ewarn "Warranty void if used ;)"
ewarn
cat >> /etc/conf.d/net <<-EOF
# These lines were added by 'cluster-setup --test'
config_eth1=( "10.0.0.1 broadcast 10.0.0.255 netmask 255.255.255.0" )
modules_eth1=( "!plug" )
# End of 'added by cluster-setup --test'
EOF
/etc/init.d/net.eth1 restart
echo root:test | chpasswd
/etc/init.d/sshd start
sed -i -e's:CONFIG_OK="no":CONFIG_OK="yes":' $CONFDIR/*.conf
fi
check_conf
grep -q /mnt/aufs/tftproot /proc/mounts
[ $? ] && aufs_mount
. $CLUSTER_CONF
einfo "Making sure $CLUSTER_ETH is configured correctly.."
if [[ "$CLUSTER_ETH" =~ eth.* && $1 != "--test" ]]; then
echo "The cluster's NIC is set as $CLUSTER_ETH with the following config:"
/sbin/ifconfig $CLUSTER_ETH
until [[ $ANS == "y" || $ANS == "n" ]]
do
echo -n "Do you want to change this now? [y/n]: "
read ANS
done
if [[ $ANS == "y" ]]; then
net-setup $CLUSTER_ETH
einfo "Adding modules_$CLUSTER_ETH=( \"!plug\" ) to /etc/conf.d/net (required for the system's consistency)"
echo "modules_$CLUSTER_ETH=( \"!plug\" )" >> /etc/conf.d/net
einfo "$CLUSTER_ETH will have to be restarted to be in a consistent state"
/etc/init.d/net.$CLUSTER_ETH restart
fi
[[ $ANS == "n" ]] && einfo "You know what you're doing..."
else
[[ $1 != "--test" ]] && einfo "CLUSTER_ETH is not set to an eth? device: $CLUSTER_ETH"
einfo "Hope you know what you're doing."
fi
do_conf $CLUSTER_CONF "emerge --config =sys-cluster/beowulf-head-0.1"
config_ssh
# we need to set master and master.$DOMAINNAME to a real IP address (not 127.0.0.1) for everything to work:
echo "$(LC_ALL=C ifconfig "eth1" | sed -n -e 's#.*\(inet addr:\|inet \)\([^ ]*\).*#\2#p') $(hostname).$LOCALDOMAINNAME $(hostname)" >> /etc/hosts
einfo "We need to refresh resolv.conf and dnsmasq."
einfo "Restarting both $PUBETH and dnsmasq..."
/etc/init.d/net.$PUBETH restart
/etc/init.d/dnsmasq restart
# This also has to be done with the $CLUSTER_CONF information sourced
# Setting up Torque
# Checking for pbs USE flag
portageq envvar USE | grep -q pbs
if [[ $? == 0 ]]; then
einfo "Setting up torque on $HOSTNAME and in $NFSROOT"
USE=server emerge --config =sys-cluster/torque-2.3.3
# if mom is not started on the master node, listing it in nodes doesn't hurt it and
# makes sure the file exists
echo $(hostname) >> $PBS_SERVER_HOME/server_priv/nodes
/etc/init.d/pbs_server start
USE=-server ROOT=$NFSROOT emerge --config =sys-cluster/torque-2.3.3
fi
# we want to do this last, otherwise some name resolution problems might haunt you
do_conf $LDAP_CONF "emerge --config =net-nds/ldap-auth-0.1"
/etc/init.d/slapd start || ewarn "Slapd did not start! See above for error messages...continuing"
einfo "Setting up auth on the $NFSROOT"
USE=-authmaster ROOT="$NFSROOT" emerge --config =net-nds/ldap-auth-0.1
[[ $? == 0 ]] && einfo "Once you have nodes going, restart Torque (pbs_server)"
if [[ $1 == "--test" ]]; then
echo "Using --test implies the following:"
echo '- root password is "test" and can log on (passwordless) onto nodes !!!!'
echo '- ldap admin password is "default" !!!!(again)'
echo "- eth1 is the cluster's NIC and is set to 10.0.0.1/24"
echo '- eth0 is the public nic'
echo '- all defaults in .config files get used'
fi
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