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# Copyright 1999-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
DESCRIPTION="This is a meta ebuild that pulls in the packages and some config scripts/files for building the Gentoo Clustering Master node"
HOMEPAGE="http://git.overlays.gentoo.org/gitweb/"
SRC_URI=""
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="amd64 ~x86"
IUSE="autofs nonfsv4"
DEPEND=""
RDEPEND="net-nds/ldap-auth
sys-boot/syslinux
net-dns/dnsmasq
net-misc/sipcalc
net-fs/nfs-utils
sys-cluster/c3"
CONFPATH="/etc/gentoo"
CONFIG_FILE="cluster.conf"
inherit confutils
get_ip_config()
{
CLUSTER_ETH_IP="$(sipcalc ${CLUSTER_ETH} | egrep 'Host address\W*-' | cut -d- -f2)"
RANGE_START="$(sipcalc ${CLUSTER_ETH} | egrep 'Host address\W*-' | cut -d- -f2)"
IPSTART="${RANGE_START%.*}.$(( ${RANGE_START##*.} +1 ))"
IPSTOP="$(sipcalc ${CLUSTER_ETH} | egrep 'Usable range\W*-' | cut -d- -f3)"
SUBNET="$(sipcalc ${CLUSTER_ETH} | egrep 'Network mask\W*-' | cut -d- -f2)"
NETADDR="$(sipcalc ${CLUSTER_ETH} | egrep 'Network address' | cut -d- -f2)"
# We have to clean up the vars from spaces:
CLUSTER_ETH_IP=${CLUSTER_ETH_IP// }
RANGE_START=${RANGE_START// }
IPSTART=${IPSTART// }
IPSTOP=${IPSTOP// }
SUBNET=${SUBNET// }
NETADDR=${NETADDR// }
}
dnsmasq_conf()
{
cat > ${ROOT}/etc/dnsmasq.conf <<-EOF
# Public interface
except-interface=$PUBETH
# Set up the local-only domain
local=/${LOCALDOMAINNAME}/
domain=$LOCALDOMAINNAME
expand-hosts
# Some netiquette:
domain-needed
bogus-priv
# Send RFC-3397 DNS domain search DHCP option. WARNING: Your DHCP client
# probably doesn't support this...... (option 119)
dhcp-option=119,$LOCALDOMAINNAME
# Domain DNS name
dhcp-option=15,$LOCALDOMAINNAME
enable-tftp
tftp-root=${TFTPROOT}
### Node definitions, this could be in a separate file
# Turn on the DHCP server, pass out addresses from $IPSTART to $IPSTOP
# with subnet mask of $SUBNET with a 12-hour lease
dhcp-range=nodes,$IPSTART,$IPSTOP,$SUBNET,12h
# Override the default route supplied by dnsmasq, which assumes the
# router is the same machine as the one running dnsmasq.
dhcp-option=3,$CLUSTER_ETH_IP
# This tells the clients the hostname and IP of the TFTP server
dhcp-boot=${PXELINUX},$(hostname),$CLUSTER_ETH_IP
# We are the authoritative DHCP server for this network
dhcp-authoritative
# address and root path of NFS server
dhcp-option=17,$CLUSTER_ETH_IP:${NFSROOT}
EOF
}
pxe_conf()
{
PROFNAME="$(uname -m)_node"
BOOTPATH="${NFSROOT##$TFTPROOT}"
BOOTPATH="${BOOTPATH#/}/boot"
mkdir -p ${TFTPROOT}/pxelinux.cfg
cat > ${TFTPROOT}/pxelinux.cfg/default <<-EOF
#prompt 1
#timeout 50
#say Press F1 for boot profiles, default is $PROFNAME in 5 seconds...
F1 BootProfiles
default $PROFNAME
label $PROFNAME
kernel ${BOOTPATH}/kernel
#important: AuFS only supports NFSv3
append ip=dhcp nfsroot=${CLUSTER_ETH_IP}:${NFSROOT},hard,intr,nfsvers=3 init=/boot/stateless.sh unionmod=aufs
label local
localboot 0
EOF
cat > ${TFTPROOT}/BootProfiles <<-EOF
Type $PROFNAME for regular bootup (default after 5 seconds)
Type local to boot on the local HDD
EOF
ln -s "${ROOT}/usr/lib/syslinux/pxelinux.0" "${TFTPROOT}/pxelinux.0"
}
nfs_root_conf()
{
[ -d ${NFSROOT} ] || die "${NFSROOT} is missing! Either create your own of find one ;)"
if [ ! -f ${NFSROOT}/boot/kernel ]; then
ewarn "Couldn't find ${NFSROOT}/boot/kernel !"
ewarn "This is what we built the config files to expect."
ewarn "You might have to perform"
fi
echo "${NFSROOT} $NETADDR/$SUBNET(ro,$NFSEPORTOPTS,fsid=0)" > ${ROOT}/etc/exports
# Yes, this could be looped on RO and RW...but that wouldn't be more redable
for I in $ROEXPORTS
do
if use nonfs4 ; then
echo "${I} $NETADDR/$SUBNET(ro,$NFSEPORTOPTS)" >> ${ROOT}/etc/exports
else
mkdir -p ${NFSROOT}/${I}
mount -o bind ${I} ${NFSROOT}/${I}
fi
use autofs && echo "${I/\/} -ro,$NFSMOUNTOPTS $CLUSTER_ETH_Ir:${I}" >> ${NFSROOT}/etc/autofs/auto.nfs
done
for I in $RWEXPORTS
do
if use nonfs4 ; then
echo "${I} $NETADDR/$SUBNET(rw,$NFSEPORTOPTS)" >> ${ROOT}/etc/exports
else
mkdir -p ${NFSROOT}/${I}
mount -o bind ${I} ${NFSROOT}/${I}
fi
use autofs && echo "${I/\/} -ro,$NFSMOUNTOPTS $CLUSTER_ETH_Ir:${I}" >> ${NFSROOT}/etc/autofs/auto.nfs
done
}
parse_config()
{
[[ -f ${1} ]] || die "${1} missing!!! re-emerge ${PF}"
. ${1}
[[ $CONFIG_OK != "yes" ]] && die "You need to edit ${CONFIG_FILE} and set CONFIG_OK=\"yes\""
}
pkg_setup() {
if ! built_with_use net-dns/dnsmasq tftp ; then
die "net-dns/dnsmasq must be built with USE=tftp to be used with ${P}!"
fi
use autofs && die "We're not there yet ;)"
}
src_install()
{
dodir ${CONFPATH}
insinto ${CONFPATH}
doins ${FILESDIR}/${CONFIG_FILE}
elog "You need to edit ${CONFPATH}/${CONFIG_FILE} to your likings"
elog "Once you are done, set CONFIG_OK=\"yes\" in there and"
elog "call emerge --config =${CATEGORY}/${PF}"
}
pkg_config()
{
parse_config "${CONFPATH}/${CONFIG_FILE}"
get_ip_config
dnsmasq_conf
pxe_conf
nfs_root_conf
for I in dnsmasq netmount nfs
do
rc-update add $I default
/etc/init.d/$I start
done
}
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