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