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Support /etc/sysctl.d/ in xcatconfig #7509

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Merged
merged 1 commit into from
Nov 14, 2025
Merged

Support /etc/sysctl.d/ in xcatconfig #7509

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38 changes: 29 additions & 9 deletions xCAT-server/sbin/xcatconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -867,23 +867,43 @@ sub settunables
}

# set for after reboot
if (!(-f "/etc/sysctl.conf.xcatbackup")) { # not already backed up
$cmd = "cp /etc/sysctl.conf /etc/sysctl.conf.xcatbackup";
my $sysctl_file;
if (-d "/etc/sysctl.d") {
$sysctl_file = "/etc/sysctl.d/99-xcat.conf";
if (!(-f "$sysctl_file")) {
$cmd = "touch $sysctl_file";
my $outref = xCAT::Utils->runcmd("$cmd", 0);
if ($::RUNCMD_RC != 0)
{
xCAT::MsgUtils->message('E', "Could not create $sysctl_file.");
exit 1;
}
}
} elsif (-f "/etc/sysctl.conf") {
$sysctl_file = "/etc/sysctl.conf";
} else {
xCAT::MsgUtils->message('E', "Could not find /etc/sysctl.d directory or /etc/sysctl.conf.");
exit 1;
}

my $sysctl_backup = "$sysctl_file.xcatbackup";
if (!(-f "$sysctl_backup")) {
$cmd = "cp $sysctl_file $sysctl_backup";
my $outref = xCAT::Utils->runcmd("$cmd", 0);
if ($::RUNCMD_RC != 0)
{
xCAT::MsgUtils->message('E', "Could not backup /etc/sysctl.conf.");
xCAT::MsgUtils->message('E', "Could not backup $sysctl_file.");
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`;
`sed -i '/net.ipv4.neigh.default.gc_thresh1 /'d $sysctl_file`;
`echo "net.ipv4.neigh.default.gc_thresh1 = 1024" >>$sysctl_file`;
`sed -i '/net.ipv4.neigh.default.gc_thresh2 /'d $sysctl_file`;
`echo "net.ipv4.neigh.default.gc_thresh2 = 4096" >>$sysctl_file`;
`sed -i '/net.ipv4.neigh.default.gc_thresh3 /'d $sysctl_file`;
`echo "net.ipv4.neigh.default.gc_thresh3 = 8192" >>$sysctl_file`;

}

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