arif/xcat-core
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defect 3618

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This commit is contained in:
lissav 2013-09-23 12:02:52 -04:00
parent 5f0bc62131
commit 4a1260201d
1 changed files with 42 additions and 3 deletions
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45
xCAT-server/sbin/xcatconfig
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@ -241,6 +241,11 @@ if (xCAT::Utils->isMN()) {
# Set tunables
#
#
if (($::settunables) && ( $::osname eq 'AIX')) { # not supported on AIX
xCAT::MsgUtils->message('E', "Setting tunables (-t) is not supported on AIX.");
exit 1;
}
if ($::FORCE || $::settunables || $::INITIALINSTALL )
{
if ($::osname eq 'Linux') {
@ -848,9 +853,43 @@ sub genSSHRootKeys
sub settunables
{
xCAT::MsgUtils->message(
'I',
"The set of tunables that will be initialized is TBD.");
# tuning ARP on Linux
# set for right now
my $cmd = "/bin/echo '1024' >/proc/sys/net/ipv4/neigh/default/gc_thresh1";
my $outref = xCAT::Utils->runcmd("$cmd", 0);
if ($::RUNCMD_RC != 0)
{
xCAT::MsgUtils->message( 'E', "Could not run $cmd.");
}
$cmd = "/bin/echo '4096' >/proc/sys/net/ipv4/neigh/default/gc_thresh2";
my $outref = xCAT::Utils->runcmd("$cmd", 0);
if ($::RUNCMD_RC != 0)
{
xCAT::MsgUtils->message( 'E', "Could not run $cmd.");
}
$cmd = "/bin/echo '8192' >/proc/sys/net/ipv4/neigh/default/gc_thresh3";
my $outref = xCAT::Utils->runcmd("$cmd", 0);
if ($::RUNCMD_RC != 0)
{
xCAT::MsgUtils->message( 'E', "Could not run $cmd.");
}
# set for after reboot
if (!( -f "/etc/sysctl.conf.xcatbackup")){ # not already backed up
$cmd = "cp /etc/sysctl.conf /etc/sysctl.conf.xcatbackup";
my $outref = xCAT::Utils->runcmd("$cmd", 0);
if ($::RUNCMD_RC != 0)
{
xCAT::MsgUtils->message( 'E', "Could not backup /etc/sysctl.conf.");
exit 1;
}
}
#delete all occurance of the attribute and then add xCAT settings
`sed -i '/net.ipv4.neigh.default.gc_thresh1 /'d /etc/sysctl.conf`;
`echo "net.ipv4.neigh.default.gc_thresh1 = 1024" >>/etc/sysctl.conf`;
`sed -i '/net.ipv4.neigh.default.gc_thresh2 /'d /etc/sysctl.conf`;
`echo "net.ipv4.neigh.default.gc_thresh2 = 4096" >>/etc/sysctl.conf`;
`sed -i '/net.ipv4.neigh.default.gc_thresh3 /'d /etc/sysctl.conf`;
`echo "net.ipv4.neigh.default.gc_thresh3 = 8192" >>/etc/sysctl.conf`;
}
#-----------------------------------------------------------------------------