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#!/usr/bin/perl
# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html
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# xCAT post script for configuring additional ethernet nics. Information is
# retreieved from nics table. Environment variables are set in the postscript
# The nic (i.e. eth1, en1) is passed as the only argument.
# Environment variables are set in the postscript in the mypostscript.tmpl
# file on the management node:
#
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#
# NICNODE - the name of the node minus the NICHOSTNAMESUFFIXES
# NICIPS - the ip address for this nic
# NICTYPES - for configeth - this must be ethernet
# NICCUSTOMSCRIPTS - parsed in confignics to invoke this script if set. (not used here)
# NICNETWORKS - the network this nic is attached to. Must also verify this network is
# set in the networks table.
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use strict;
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use Socket;
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#process arguments. Currently supported arguments are:
# -c nics_to_configure,
# -u nics_to_unconfigure
# Both arguments are comma separated list of nics, i.e. eth0,eth1,ib0,ib1
# it is possible that only -u may be specified to unconfigure nics and there will be no
# nics to configure. Likewise, there may be nics to configure but not nics to unconfigure.
my $nics = '';
my $rm_nics = '';
my $a;
while ($a = shift(@ARGV)) {
if ($a eq "-c") {
$a = shift(@ARGV);
if (!$a || $a=~/^-/) {
# no arg specified for -c
system("logger -t xcat -p local4.err 'configeth: No argument specified for -c flag'");
exit 1;
}
else {
$nics = $a;
}
}
elsif ($a eq "-u") {
$a = shift(@ARGV);
if (!$a || $a=~/^-/) {
# no arg specified for -c
system("logger -t xcat -p local4.err 'configeth: No argument specified for -c flag'");
exit 1;
}
else {
$rm_nics = $a;
}
}
}
if ( !$nics && !$rm_nics ) {
system("logger -t xcat -p local4.err 'configeth: incorrect argument specified for -c flag'");
exit 1;
}
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my $nicips = $ENV{NICIPS};
my $nicnetworks = $ENV{NICNETWORKS};
my $nicnode = $ENV{NICNODE};
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my $net_cnt = $ENV{NETWORKS_LINES};
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my $cfg_nic_ref_hash = {}; # set from get_install_nic
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my $netmask ='';
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my $ipaddr = '';
my $nic_num = '';
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my $subnet = '';
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my $gateway = ''; # this is only used for ipv6, ipv4 gateway is assigned by dhcp
my $ipv4nic = 0;
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my $nic_net = '';
my $net_name = '';
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my @nic_nets_all = (); # array of all networks for this nic
my @nic_nets4 = (); # array of ipv4 networks for this nic
my @nic_nets6 = (); # array of ipv6 networks for this nic
my @nic_ips_all =(); # array of all ip addresses for this nic
my @nic_ips4 =(); # array of ipv4 addresses for this nic
my @nic_ips6 =(); # array of ipv6 addresses for this nic
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my @networks = (); # array of all networks from networks table.
# { network_name, subnet, netmask }
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system("logger -t xcat -p local4.err 'configeth: NICS: $nics'");
system("logger -t xcat -p local4.err 'configeth: REMOVE_NICS: $rm_nics'");
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system("logger -t xcat -p local4.err 'configeth: NICNETWORKS: $nicnetworks'");
system("logger -t xcat -p local4.err 'configeth: NICIPS: $nicips'");
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# First process nics that need to be removed.
if ($rm_nics) {
my $i;
my @nics_rm = split(/,/, $rm_nics);
for ($i=0; $i < (scalar @nics_rm); $i++) {
if ($^O =~ /^aix/i) {
# Still need to figure out AIX command ifconfig down and remove (chdev ?) interface
# Start by looking at the same command that configures.
}
elsif (($ENV{OSVER} && ($ENV{OSVER} =~ /sles|suse/i)) || (-f "/etc/SuSE-release")) {
# on suse/sles ip aliases go in the same file as the base. Need to remove lines
# specific to the aliases after taking the interface down.
runcmd("ifdown $nics_rm[$i]");
# update or remove config file.
my $dir = "/etc/sysconfig/network";
# just move nic file to file.old
`mv $dir/ifcfg-$nics_rm[$i] $dir/ifcfg-$nics_rm[$i].old`;
}
else {
# OS is redhat.
# Note that the ifdown command will fail if the configuration file does not exist
# in the /etc/sysconfig/network-scripts directory. Therefore check that the
# nic config file exists prior to ifdown. Otherwise the nic is already deconfigured.
my $dir = "/etc/sysconfig/network-scripts";
if (-e "$dir/ifcfg-$nics_rm[$i]") {
runcmd("ifdown $nics_rm[$i]");
# For now remove all aliased files - i.e. nic_name:1)
my $aliases = "$dir/ifcfg-$nics_rm[$i]:*";
my @files = glob($aliases);
unlink @files;
# Remove base config file.
$aliases = "$dir/ifcfg-$nics_rm[$i]";
@files = glob($aliases);
unlink @files;
}
}
}
}
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# create array of network info. Needed in case where there are
# more than one ip address per nic and shouldn't be many networks.
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my $net_info;
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my $cnt = 1;
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while ( $cnt <= $net_cnt ) {
$net_info = $ENV{"NETWORKS_LINE$cnt"};
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$net_info =~ /^netname=([^\|]*)\|\|/;
$net_name = $1;
$net_info =~ /net=([^\|]*)\|\|/;
$subnet = $1;
$net_info =~ /mask=([^\|]*)\|\|/;
$netmask = $1;
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$net_info =~ /gateway=([^\|]*)\|\|/;
$gateway = $1;
push @{ $networks[$cnt-1] }, ($net_name, $subnet, $netmask, $gateway);
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$cnt +=1;
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}
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# Start processing of nics to install here.
my $j;
my @nics_to_install = split(/,/, $nics);
for ($j=0; $j < (scalar @nics_to_install); $j++) {
my $nic = $nics_to_install[$j];
# reset some variables inside this loop
@nic_ips4 = ();
@nic_ips6 = ();
@nic_nets4 = ();
@nic_nets6 = ();
# get network or networks for this nic from NICNETWORKS:
# eth0:1_0_0_0-255_255_0_0|network2,eth1:1_1_0_0
# create array of networks for this nic
foreach my $nic_networks (split(/,/,$nicnetworks)) {
my @net = ();
if ( $nic_networks =~ /!/ ) {
@net = split(/!/,$nic_networks);
} else {
@net = split(/:/,$nic_networks);
}
if ($net[0] eq $nic) {
@nic_nets_all = split(/\|/,$net[1]);
last;
}
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}
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# Put all ipv4 nets into nic_nets4,
# put all ipv6 nets into nic_nets6.
my $i = 0;
for ($i=0; $i < (scalar @nic_nets_all) ; $i++ ) {
# The network name itself does not indicate ipv4 or ipv6
# should use the subnet to determine.
# Do not use foreach (@networks), needs to keep the order of nets and ips
my $net = $nic_nets_all[$i];
foreach my $netinfo (@networks)
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{
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if ($netinfo->[0] eq $net)
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{
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if ($netinfo->[1] =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/)
{
push @nic_nets4, $net;
} elsif ($netinfo->[1] =~ /:/) {
push @nic_nets6, $net;
} else {
system("logger -t xcat -p local4.err 'The subnet $net is not valid.'");
}
last;
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}
}
}
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# get all nic ipaddress from $nicips: i.e. eth0:1.0.0.1|2.0.0.1,eth1:1.1.1.1
# Then get all ips for this specific nic, i.e. eth0.
foreach my $ips (split(/,/,$nicips)) {
my @ip = ();
if ( $ips =~ /!/ ) {
@ip = split(/!/,$ips);
} else {
@ip = split(/:/,$ips);
}
if ($ip[0] eq $nic ) {
@nic_ips_all = split(/\|/,$ip[1]);
}
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}
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# Put all ipv4 addresses in @nic_ips4,
# put all ipv6 addresses in @nic_ips6.
# Do not use forach, needs to keep the order of networks and ips
for ($i=0; $i < (scalar @nic_ips_all) ; $i++ ) {
my $ip = $nic_ips_all[$i];
# ipv4 address
if ($ip =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/) {
push @nic_ips4, $ip;
} elsif ($ip =~ /:/) { # ipv6
push @nic_ips6, $ip;
} else {
system("logger -t xcat -p local4.err 'configeth: The ip address $ip is not valid.'");
}
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}
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for ($i=0; $i < (scalar @nic_ips4) ; $i++ ) {
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# ipv6 configuration needs to know if this nic as ipv4 configured
$ipv4nic = 1;
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# Time to create the interfaces.
# loop through the nic networks, find the matching networks to get the
# subnet and netmask and then create the appropriate ifcfg file for linux
# or invoke correct AIX command.
my $specific_nic = $nic;
if ($i > 0) {
$specific_nic = $nic . ":" . ($i);
}
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$cnt = 0;
$subnet = "";
$netmask = "";
$net_name = "";
while ( $cnt < $net_cnt ) {
if ( $networks[$cnt][0] eq $nic_nets4[$i] ) {
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$subnet = $networks[$cnt][1];
$netmask = $networks[$cnt][2];
$cnt = $net_cnt; # found match - get out.
}
else {
$cnt++;
}
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}
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# check that there is a subnet and netmask set
if ( !(length($subnet) > 0) || !(length($netmask) > 0) ) {
system("logger -t xcat -p local4.err 'configeth: network subnet or netmask not set.'");
exit 1;
}
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if ($^O =~ /^aix/i) {
if ($i == 0) {
if ($nic_ips4[$i] =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/) {
runcmd("chdev -l '$nic' -a netaddr=$nic_ips4[$i] -a netmask=$netmask -a state='up'");
# } else { #ipv6
# runcmd("autoconf6 -6i en$nic_num");
}
} else {
if ($nic_ips4[$i] =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/) {
runcmd("chdev -l '$nic' -a alias4=$nic_ips4[$i],$netmask");
# } else { #ipv6
# runcmd("autoconf6 -6i en$nic_num");
}
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}
}
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elsif (($ENV{OSVER} && ($ENV{OSVER} =~ /sles|suse/i)) || (-f "/etc/SuSE-release")) {
# Write the info to the ifcfg file
my $dir = "/etc/sysconfig/network";
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if ($i == 0 ) {
if (!open(FILE, ">$dir/ifcfg-$nic")) { system("logger -t xcat -p local4.err 'configeth: cannot open $dir/ifcfg-$nic.'"); exit 1; }
# Not sure what is really REQUIRED from below -- copied the eth file from
# the system
print FILE "DEVICE=\'$nic\'\n";
print FILE "BOOTPROTO=\'static\'\n";
print FILE "NM_CONTROLLED=\'no\'\n";
print FILE "BROADCAST=\'\'\n";
print FILE "ETHTOOL_OPTIONS=\'\'\n";
print FILE "IPADDR=\'".$nic_ips4[$i]."\'\n";
print FILE "MTU=\'\'\n";
print FILE "NAME=\'\'\n";
print FILE "NETMASK=\'".$netmask."\'\n";
print FILE "NETWORK=\'".$subnet."\'\n";
print FILE "REMOTE_IPADDR=\'\'\n";
print FILE "STARTMODE=\'onboot\'\n";
print FILE "UNIQUE=\'\'\n";
print FILE "USERCONTROL=\'no\'\n";
print FILE "_nm_name=\'static-0\'\n";
} else {
# on suse/sles the ip alias info goes into the same file as the base ip info.
# open ifconfig-eth file and append additional info.
if (!open(FILE, ">>$dir/ifcfg-$nic")) { system("logger -t xcat -p local4.err 'configeth: cannot open $dir/ifcfg-$nic for appending ip alias info'"); exit 1; }
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print FILE "IPADDR_$i=\'".$nic_ips4[$i]."\'\n";
print FILE "NETMASK_$i=\'".$netmask."\'\n";
print FILE "NETWORK_$i=\'".$subnet."\'\n";
print FILE "LABEL_$i=\'".$i."\'\n";
}
close FILE;
runcmd("ifup $nic");
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}
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else {
# Write the info to the ifcfg file for redhat
my $dir = "/etc/sysconfig/network-scripts";
if (!open(FILE, ">$dir/ifcfg-$specific_nic")) { system("logger -t xcat -p local4.err 'configeth: cannot open $dir/ifcfg-$specific_nic.'"); exit 1; }
print FILE "DEVICE=$specific_nic\n";
print FILE "BOOTPROTO=none\n";
print FILE "NM_CONTROLLED=no\n";
print FILE "IPADDR=$nic_ips4[$i]\n";
print FILE "NETMASK=$netmask\n";
#if (defined($gateway)) { print FILE "GATEWAY=$gateway\n"; }
print FILE "ONBOOT=yes\n";
close FILE;
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runcmd("$dir/ifup $specific_nic");
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}
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# system("logger -t xcat -p local4.info 'configeth: successfully configured $specific_nic.'");
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}
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# ipv6 configuration
# ipv6 address does not use the nic alias like eth0:1,
# should use the main nic like eth0
my $configured = 0;
for ($i=0; $i < (scalar @nic_ips6) ; $i++ )
{
# Get the network information: netname, subnet, netmask
my $found = 0;
my $subnet;
my $prefixlen;
my $ipv6gateway;
my $ip6addr = $nic_ips6[$i];
my $net = $nic_nets6[$i];
foreach my $netinfo (@networks)
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{
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if ($netinfo->[0] eq $net)
{
$found = 1;
$subnet = $netinfo->[1];
$prefixlen = $netinfo->[2];
$ipv6gateway = $netinfo->[3];
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}
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# Remove the postfix like /64 from subnet
if ($subnet && ($subnet =~ /\//)) {
$subnet =~ s/\/.*$//;
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}
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# Remove the "/" from prefixlen
if ($prefixlen && ($prefixlen =~ /^\//))
{
$prefixlen =~ s/^\///;
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}
}
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if ($found == 0)
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{
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system("logger -t xcat -p local4.err 'configeth: Could not find network entry for ip address $ip6addr'");
next;
}
if ($^O =~ /^aix/i) {
if (!$configured)
{
runcmd("chdev -l en0 -a netaddr6=$ip6addr -a prefixlen=$prefixlen -a state=up");
$configured = 1;
} else {
runcmd("chdev -l en0 -a alias6=$ip6addr/$prefixlen");
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}
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} elsif (($ENV{OSVER} && ($ENV{OSVER} =~ /sles|suse/i)) || (-f "/etc/SuSE-release")) {
my $dir = "/etc/sysconfig/network";
# If there are only ipv6 addresses on this nic,
# needs to flush the ifcfg-$nic file when configuring the first ipv6 addr,
# to avoid duplicate entries when run confignics/configeth multiple times.
if (!$ipv4nic && !$configured)
{
if (!open(FILE, ">$dir/ifcfg-$nic")) {
system("logger -t xcat -p local4.err 'configeth: cannot open $dir/ifcfg-$nic.'");
exit 1;
}
print FILE "DEVICE=$nic\n";
print FILE "BOOTPROTO=static\n";
print FILE "NM_CONTROLLED=no\n";
print FILE "STARTMODE=onboot\n";
} else {
if (!open(FILE, ">>$dir/ifcfg-$nic")) {
system("logger -t xcat -p local4.err 'configeth: cannot open $dir/ifcfg-$nic.'");
exit 1;
}
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}
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# Use the label=ipv6$i in ifcfg-ethx file, like ipv60, ipv61
print FILE "LABEL_ipv6$i=ipv6$i\n";
print FILE "IPADDR_ipv6$i=$ip6addr\n";
print FILE "PREFIXLEN_ipv6$i=$prefixlen\n";
close FILE;
if ($ipv6gateway && $ipv6gateway !~ /xcatmaster/) {
# Do not add duplicate entries
`grep -E "default\\s+$ipv6gateway\\s+" /etc/sysconfig/network/routes 2>&1 1>/dev/null`;
if ($? != 0) {
`echo "default $ipv6gateway - -" >> /etc/sysconfig/network/routes`;
}
}
runcmd("ifup $nic");
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} else {
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# Ubuntu TODO
my $dir = "/etc/sysconfig/network-scripts";
# If there are only ipv6 addresses on this nic,
# needs to flush the ifcfg-$nic file when configuring the first ipv6 addr,
# to avoid duplicate entries when run confignics/configeth multiple times.
if (!$ipv4nic && !$configured)
{
if (!open(FILE, ">$dir/ifcfg-$nic")) {
system("logger -t xcat -p local4.err 'configeth: cannot open $dir/ifcfg-$nic.'");
exit 1;
}
print FILE "DEVICE=$nic\n";
print FILE "BOOTPROTO=none\n";
print FILE "NM_CONTROLLED=no\n";
print FILE "ONBOOT=yes\n";
} else {
if (!open(FILE, ">>$dir/ifcfg-$nic")) {
system("logger -t xcat -p local4.err 'configeth: cannot open $dir/ifcfg-$nic.'");
exit 1;
}
}
if (!$configured) {
print FILE "IPV6INIT=yes\n";
print FILE "IPV6ADDR=$ip6addr/$prefixlen\n";
$configured = 1;
} else {
print FILE "IPV6ADDR_SECONDARIES=$ip6addr/$prefixlen\n";
}
if ($ipv6gateway && $ipv6gateway !~ /xcatmaster/) {
print FILE "IPV6_DEFAULTGW=$ipv6gateway\n";
}
close FILE;
runcmd("$dir/ifup-ipv6 $nic");
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}
}
}
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exit 0;
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sub runcmd {
my $cmd = shift @_;
$cmd .= ' 2>&1';
my @output = `$cmd`;
my $rc = $? >> 8;
if ($rc) {
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system("logger -t xcat -p local4.err 'configeth: command $cmd failed with rc $rc: " . join('',@output) . "'");
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my $errout= "configeth: command $cmd failed with rc $rc.";
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`echo $errout`;
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exit $rc;
}
}
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sub get_current_nics {
my @ip_addr_array = `ip addr show`;
my $nic_name;
my $nic_type;
my $nic_state;
my $nic_slave;
my $nic_mac;
my $bridgednics;
my $a_len = scalar(@ip_addr_array);
my %nics;
my $i = 0;
while ( $i < scalar(@ip_addr_array)) {
#print "array index $i: @ip_addr_array[$i]\n";
# check if line starts with "number: text:"
# if so then it is the start of a nic stanza which looks like:
# 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
# link/ether 5c:f3:fc:a8:bb:93 brd ff:ff:ff:ff:ff:ff
# inet 9.114.34.232/24 brd 9.114.34.255 scope global eth1
# inet6 fd55:faaf:e1ab:336:5ef3:fcff:fea8:bb93/64 scope global dynamic
# valid_lft 2591627sec preferred_lft 604427sec
# inet6 fd56::214:5eff:fe15:849b/64 scope global
# valid_lft forever preferred_lft forever
# inet6 fe80::5ef3:fcff:fea8:bb93/64 scope link
# valid_lft forever preferred_lft forever
if ( $ip_addr_array[$i] =~ /^(\d+): / ) {
# get nic name
$ip_addr_array[$i] =~ /^\d+: ([^:].*):/;
$nic_name = $1;
# get state of nic either "UP" if different, such as DOWN, not configured
# then assume state is DOWN.
if ($ip_addr_array[$i] =~ /,UP/ ) {
$nic_state = "UP";
}
else {
$nic_state = "DOWN";
}
# Check if this nic is part of a bridge or bonded interface. If bonded on
# redhat then "SLAVE" or "MASTER" will be in the first line of stanza
# inside <>.
#
# A bridged interface is a little different. The command, "brctl show", is used
# to show information about bridged interfaces. The subroutine get_bridged_nics()
# writes out $bridgednics which is a comma separated strings of bridged nics.
# If $nic_name matches a bridgednic then set nic_slave=1 for now to lump them
# with bonded nics for now since we will not unconfigure bridged or bonded nics.
#
$nic_slave = 0; # default to 0
if ($ip_addr_array[$i] =~ /SLAVE/ ) {
$nic_slave = 1;
}
if ($ip_addr_array[$i] =~ /MASTER/ ) {
$nic_slave = 1;
}
if ($nic_name =~ /$bridgednics/) {
$nic_slave = 1;
}
# example output shows type is "link/ether" for ethernet or
# "link/infiniband" for ib. Look ahead to next line for this.
$ip_addr_array[$i+1] =~ /^\s+link\/([a-z]+) /;
$nic_type = $1;
$i++;
# CHECK: it looks like there could be a usb nic ethernet adapter. Need to investigate
# if more needs to be done for that such as it is handled differently.
# If value is not "ether" or "infiniband" then continue on to next stanza
if ($nic_type ne "ether" && $nic_type ne "infiniband") {
next;
}
my @line = split(' ', $ip_addr_array[$i]);
$nic_mac = $line[1];
# move on to next line and loop through all lines for additional information or
# and until the line is the start of a new stanza.
# This is where things get dicey and may need enhancements:
# inet 70.0.0.182/24 brd 70.0.0.255 scope global eth5
# indicates an ipv4 address with a netmask of /24, a broadcast address,
# scope global nicname (eth5). If this was an aliased ip then nicname would be eth5:1 or such.
# inet6 fd55:faaf:e1ab:336:3640:b5ff:fe89:66c4/64 scope global dynamic
# it appears that valid ips have "scope global"
$i++;
# print "NIC: $nic_name, TYPE: $nic_type, MAC: $nic_mac SLAVE: $nic_slave, STATE: $nic_state \n";
$nics{$nic_name} = {};
$nics{$nic_name}->{state} = $nic_state;
$nics{$nic_name}->{mac} = $nic_mac;
$nics{$nic_name}->{slave} = $nic_slave;
$nics{$nic_name}->{type} = $nic_type;
$nics{$nic_name}->{ips} = [];
while ($i < scalar(@ip_addr_array) && !($ip_addr_array[$i] =~ /^(\d+): / ) ) {
# $ip_proto - is either inet or inet6
# $ip_mask is "ipaddr or ipv6addr"/netmask and possibly "brd broadcastip"
# $scope has the scope (global, link, site, host) if global or site then
# only data after scope is the nic "label", i.e. eth0, eth5:1.
# note that "tentative" may appear but is not a label.
# On RH for an ip alias with same netmask/subnet then line will be:
# inet 11.0.0.80/16 brd 11.0.255.255 scope global secondary eth2:1
my ($ip_proto, $ip_mask, $scope) =
$ip_addr_array[$i]=~/\s+(inet|inet6)\s+(.+)\s+scope\s+(.+)$/;
if ( $ip_proto =~ /inet/ ) { # line contains inet or inet6. Process info
my ($nic_ip_mask, $junk) = split(' ', $ip_mask);
my ($nic_ip, $nic_mask) = split('\/', $nic_ip_mask);
my ($sc, $label, $more_label) = split(' ', $scope);
if ( $sc ne "link" ) { # this is a valid one to keep
if ($label eq "secondary") {
$label = $more_label;
}
#print "\tPROTO: $ip_proto, IP: $nic_ip, MASK: $nic_mask, SCOPE: $sc, LABEL:$label\n";
push @{$nics{$nic_name}->{ips}},{ip => $nic_ip, netmask => $nic_mask, label => $label };
}
}
$i++;
}
next; # next nic stanza or end of file.
}
$i++;
}
return \%nics;
}
2008-04-24 13:04:01 +00:00
