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xcat-core/xCAT-server/share/xcat/scripts/xHRM

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#!/bin/bash
#written in bash for fewest prerequisites
function get_def_interface {
#gethostbyname on `hostname` would be helpful, but since we
#are in bash, the best alternative is to use ping to get at it
#don't want to grep in /etc/hosts or presume DNS
#we are, however, presuming ipv4 for the moment
retval=$(ping -c 1 `hostname`|head -n 1|cut -d\( -f 2|cut -d\) -f 1)
if [ -z "$retval" -o "127.0.0.1" = "$retval" ]; then #ok, that didn't pan out, now we grab the first address that looks sane
retval=`ifconfig|grep inet" " |grep -v addr:127.0.0.1|grep -v 'addr:169.254'|head -n 1|cut -d: -f 2|cut -d' ' -f 1`
fi
if [ -z "$retval" ]; then
echo "ERROR: Unable to reasonably guess the 'default' interface" >&2
exit 1
fi
iface=`ifconfig|grep -v inet6|egrep '(Link|inet)'|grep -B1 'addr:'$retval |head -n 1|awk '{print $1}'`
if [ -z "$iface" ]; then
echo "ERROR: Unable to reasonably guess the default interface" >&2
exit 1
fi
if brctl show | grep ^$iface >& /dev/null; then #
OIFS=$IFS
IFS=$'\n'
INMATCH=0
for brline in $(brctl show); do
IFS=$OIFS
if [ $(expr match "$brline" $iface) == $(expr length $iface) ]; then
INMATCH=1
elif [ $(expr match "$brline" " ") != 1 ]; then
INMATCH=0
fi
if [ "$INMATCH" == 1 ]; then
if ! ethtool -i `echo $brline|awk '{print $NF}'`|grep "driver: tun" >& /dev/null; then
iface=`echo $brline|awk '{print $NF}'`
echo "$iface"
IFS=$OFIS
return
fi
fi
done
IFS=$OFIS
else
echo "$iface"
fi
}
#before modify the configuration on ubuntu/debian, should preparse the interface file
#By default, All nics configuration are saved into /etc/network/interfaces, it is difficult for xcat to configure nic
#So only use source /etc/network/interfaces.d/* in "/etc/network/interfaces"
#create files under /etc/network/interfaces.d/ for each nic, then it is similar with the readhat and sles
function debianpreconf(){
#create the config sub dir
if [ ! -d "/etc/network/interfaces.d" ];then
mkdir -p "/etc/network/interfaces.d"
fi
#search xcat flag
XCATFLAG=`grep "#XCAT_CONFIG" /etc/network/interfaces`
if [ -n "$XCATFLAG" ];then
return
fi
#back up the old interface configure
if [ ! -e "/etc/network/interfaces.bak" ];then
mv /etc/network/interfaces /etc/network/interfaces.bak
fi
#create the new config file
echo "#XCAT_CONFIG" > /etc/network/interfaces
echo "source /etc/network/interfaces.d/*" >> /etc/network/interfaces
CONFFILE=''
#read the backfile
cat /etc/network/interfaces.bak | while read LINE
do
if [ ! "$LINE" ];then
continue
fi
FIRSTCHAR=${LINE:0:1}
if [ $FIRSTCHAR = '#' ];then
continue
fi
CONFTYPE=`echo $LINE | cut -d" " -f1`
if [ $CONFTYPE = 'auto' -o $CONFTYPE = 'allow-hotplug' ];then
LINE=${LINE#$CONFTYPE}
for NICNAME in $LINE; do
echo "$CONFTYPE $NICNAME" > "/etc/network/interfaces.d/$NICNAME"
done
elif [ $CONFTYPE = 'iface' -o $CONFTYPE = 'mapping' ];then
#find out the nic name, should think about the eth0:1
NICNAME=`echo $LINE | cut -d" " -f 2 | cut -d":" -f 1`
CONFFILE="/etc/network/interfaces.d/$NICNAME"
if [ ! -e $CONFFILE ];then
echo "auto $NICNAME" > $CONFFILE
fi
#write lines into the conffile
echo $LINE >> $CONFFILE
else
echo $LINE >> $CONFFILE
fi
done
}
if [ "storageprereq" = "$1" ]; then
MOUNTURI="$2"
DIRNAME=`echo $MOUNTURI|sed -e 's!nfs://!nfs_!'`
MOUNTPATH=`echo $DIRNAME|sed -e 's!nfs_!!'|sed -e 's!/!:/!'`
if mount|grep $MOUNTPATH > /dev/null; then
exit 0;
fi
mkdir -p /var/lib/xcat/vmnt/$DIRNAME
mount $MOUNTPATH /var/lib/xcat/vmnt/$DIRNAME
elif [ "bridgeprereq" = "$1" ]; then
NETDESC="$2"
# get the port for installation
if [ -n "$INSTALLNIC" ]; then
if [[ "$INSTALLNIC" = mac ]] || [[ "$INSTALLNIC" = MAC ]]; then
INSPORT=`ifconfig -a|grep -v inet6| grep -i 'HWaddr '$MACADDRESS|head -n 1|awk '{print $1}'`
else
INSPORT=$INSTALLNIC
fi
fi
if [ -z "$NETDESC" ]; then
if [ -n "$INSTALLNIC" ]; then
NETDESC=$INSPORT:default
else
echo "Incorrect usage"
exit 1
fi
fi
if echo "$NETDESC"|grep ':'> /dev/null; then
PORTS=`echo "$NETDESC"|cut -d: -f 1`
BNAME=`echo "$NETDESC"|cut -d: -f 2`
else
if [ -n "$INSTALLNIC" ]; then
PORTS=$INSPORT
fi
BNAME=$NETDESC
fi
if brctl showstp "$BNAME" > /dev/null; then
echo "$BNAME"
exit 0
fi
#Still here, that means we must build a bridge
if [ -z "$PORTS" ]; then #No ports specified, default to whatever looks up
PORTS=$(get_def_interface)
fi
if [ -z "$PORTS" ]; then #This has been checked many times before in theory, check again just in case
exit 1
fi
#For now, we only support bridge name==network name. This precludes
#the config of the same vlan number on multiple fabrics, but
#will cover that flexibility later if demanded (with 4k vlan ids,
#I think it would be unwise to reuse them as it could confuse anyway)
if echo "$PORTS"|grep '&'; then #we have bonding... fun to be had
#To be slack, going to just support one bond for now..
modprobe bonding miimon=100 mode=4
PORTS=`echo $PORTS |sed -e 's/&/ /'`
ip link set bond0 up
for p in $PORTS; do
#TODO: we are only going to manage the default
#route for now
saveroutes=`ip route | grep default| grep "dev $p"|grep via|sed -e 's/dev .*//'`
OIFS=$IFS
IFS=$'\n'
saveip=`ip addr show dev $p scope global|grep inet|grep -v dynamic|sed -e 's/inet.//'|sed -e 's/[^ ]*$//'`
if [ ! -z "$saveip" ]; then
for line in $saveip; do
ip addr add dev bond0 $line
done
fi
IFS=$OIFS
ifenslave bond0 $p
if [ ! -z "$saveroutes" ]; then
ip route add $saveroutes
fi
done
PORTS=bond0
fi
if echo "$BNAME"|egrep '^vl(an)?[0123456789]' > /dev/null; then
vlan="yes"
TNAME=${BNAME##vl}
TNAME=${TNAME##an}
#We have a vlan... more fun
modprobe 8021q
vconfig add $PORTS $TNAME
vconfig set_flag $PORTS.$TNAME 2 1 #Turn on GVRP where supported
ip link set $PORTS.$TNAME up
PORTORG=$PORTS
PORTS=$PORTS.$TNAME
fi
#Now, $PORTS is 'the' physical device to participate in a bridge
#TODO: we are only going to manage the default
#route for now
brctl addbr $BNAME
brctl setfd $BNAME 0 #fast forwarding
ip link set $BNAME up
saveroutes=`ip route | grep default| grep "dev $PORTS"|grep via|sed -e 's/dev .*//'`
OIFS=$IFS
IFS=$'\n'
saveip=`ip addr show dev $PORTS scope global|grep inet|grep -v dynamic|sed -e 's/inet.//'|sed -e 's/[^ ]*$//'`
#saveip=`ip addr show dev $PORTS scope global|grep inet|sed -e 's/inet.//'|sed -e 's/[^ ]*$//'`
if [ ! -z "$saveip" ]; then
for line in $saveip; do
IFS=$OIFS
ip addr add dev $BNAME $line
done
else
if [ ! -z "$3" ]; then
ip addr add dev $BNAME $3
fi
fi
brctl addif $BNAME $PORTS
if [ ! -z "$saveip" ]; then
OIFS=$IFS
IFS=$'\n'
for line in $saveip; do
IFS=$OIFS
ip addr del dev $PORTS $line
done
IFS=$OIFS
fi
IFS=$OIFS
if [ ! -z "$saveroutes" ]; then
ip route add $saveroutes
fi
#now save the settings into the config files so that they will be persistent among reboots
if [[ $OSVER = sles* ]] || [[ $OSVER = suse* ]] || [[ -f /etc/SuSE-release ]]; then
nwdir="/etc/sysconfig/network"
isSLES=1
elif [ -f "/etc/debian_version" ];then
debianpreconf
nwdir="/etc/network/interfaces.d"
isDebian=1
getcap /usr/bin/qemu-system-x86_64 | grep cap_net_admin
if [ $? ne 0 ];then
setcap cap_net_admin=ei /usr/bin/qemu-system-x86_64
fi
else
nwdir="/etc/sysconfig/network-scripts"
fi
#write into the network configuration file
if [[ $isSLES -eq 1 ]]; then
cat >$nwdir/ifcfg-$PORTS <<EOF
DEVICE='$PORTS'
ONBOOT='yes'
BRIDGE='$BNAME'
EOF
mac=`ip addr show dev $PORTS scope global|grep link|sed -e 's/link\/ether//'|sed -e 's/brd.*$//'|sed -e 's/[ ]*//'`
if [ ! -z "$mac" ]; then
echo "HWADDR='$mac'" >> $nwdir/ifcfg-$PORTS
fi
if [ ! -z "$vlan" ]; then
echo "VLAN='yes'" >> $nwdir/ifcfg-$PORTS
fi
cat >$nwdir/ifcfg-$BNAME <<EOF
DEVICE='$BNAME'
TYPE='Bridge'
ONBOOT='yes'
PEERDNS='yes'
DELAY='0'
EOF
if [ ! -z "$3" ]; then
echo "IPADDR='$3'" >> $nwdir/ifcfg-$BNAME
if [ ! -z "$4" ]; then
echo "NETMASK='$4'" >> $nwdir/ifcfg-$BNAME
fi
else
echo "BOOTPROTO=dhcp" >> $nwdir/ifcfg-$BNAME
fi
elif [ $isDebian ];then
#ubuntu/debian
echo "auto $PORTS" >$nwdir/$PORTS
echo "iface $PORTS inet manual" >> $nwdir/$PORTS
if [ ! -z "$vlan" ];then
echo " vlan-raw-device $PORTORG"
fi
echo "auto $BNAME" > $nwdir/$BNAME
if [ ! -z "$3" ];then
echo "iface $BNAME inet static" >> $nwdir/$BNAME
echo " address $3" >> $nwdir/$BNAME
if [ ! -z "$4" ];then
echo " netmask $4" >> $nwdir/$BNAME
else
echo " netmask 255.255.255.0" >> $nwdir/$BNAME
fi
else
echo "iface $BNAME inet dhcp" >> $nwdir/$BNAME
fi
echo " bridge_ports $PORTS" >> $nwdir/$BNAME
echo " bridge_stp off" >> $nwdir/$BNAME
echo " bridge_fd 0" >> $nwdir/$BNAME
echo " bridge_maxwait 0" >> $nwdir/$BNAME
else
cat >$nwdir/ifcfg-$PORTS <<EOF
DEVICE=$PORTS
ONBOOT=yes
BRIDGE=$BNAME
EOF
mac=`ip addr show dev $PORTS scope global|grep link|sed -e 's/link\/ether//'|sed -e 's/brd.*$//'|sed -e 's/[ ]*//'`
if [ ! -z "$mac" ]; then
echo "HWADDR=$mac" >> $nwdir/ifcfg-$PORTS
fi
if [ ! -z "$vlan" ]; then
echo "VLAN=yes" >> $nwdir/ifcfg-$PORTS
fi
cat >$nwdir/ifcfg-$BNAME <<EOF
DEVICE=$BNAME
TYPE=Bridge
ONBOOT=yes
PEERDNS=yes
DELAY=0
EOF
if [ ! -z "$3" ]; then
echo "IPADDR=$3" >> $nwdir/ifcfg-$BNAME
if [ ! -z "$4" ]; then
echo "NETMASK=$4" >> $nwdir/ifcfg-$BNAME
fi
else
echo "BOOTPROTO=dhcp" >> $nwdir/ifcfg-$BNAME
fi
fi
ifup $BNAME
fi #END bridge config.
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