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Added check_linux_modules.pl which checks if required modules are loaded for the next default booted kernel

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Tómas Edwardsson 2010-05-11 13:39:28 +00:00
parent 2f5e66166f
commit 6ba2a12b32
1 changed files with 107 additions and 0 deletions
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107
check_linux_modules.pl/trunk/check_linux_modules.pl Executable file
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#!/usr/bin/perl -w
##
## Copyright 2010, Tomas Edwardsson
##
## This script is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This script is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program. If not, see <http://www.gnu.org/licenses/>.
#
use strict;
if (!@ARGV) {
print "CRITICAL usage, $0 [module module..]\n";
exit 2;
}
sub check_modules($@) {
my $kernel = shift;
my @modules = @_;
my $failed_string = '';
foreach my $mod (@modules) {
if (!-f "/lib/modules/$kernel/$mod") {
$failed_string .= "/lib/modules/$kernel/$mod, ";
}
}
chop($failed_string) for (0..1);
if ($failed_string) {
print "WARNING, missing modules for boot kernel, $failed_string\n";
exit 1;
}
print "OK, all modules in place\n";
exit 0;
}
sub get_latest_kernel() {
unless (open GRUBCONF, '</etc/grub.conf') {
print "CRITICAL, Unable to open /etc/grub.conf: $!\n";
exit 2;
};
my $line;
# Set starting default for format detection
my $default = -1;
my $titlenum = 0;
my $title = '';
my $kernel = '';
# Read through grub.conf
while (my $line = <GRUBCONF>) {
# Strip newline characters
chomp($line);
# Search for default=\d
if ($default == -1) {
if ($line =~ /^default=(\d+)$/) {
$default = ($1 + 1);
}
# Search title
} elsif (!$title) {
if ($line =~ /^title /) {
$titlenum++;
}
$title = $line if ($titlenum == $default);
# Find the kernel
} else {
if ($line =~ /kernel.\/vmlinuz-(\S+) /) {
$kernel = $1;
last;
}
}
}
if ($default == -1) {
print "WARNING, No default= found in grub.conf\n";
exit 1;
} elsif (!$title) {
print "WARNING, No title found for default=$default in grub.conf\n";
exit 1;
} elsif (!$kernel) {
print "WARNING, No kernel found for kernel title \"$title\"\n";
exit 1;
}
return $kernel;
}
my $kernel = get_latest_kernel();
check_modules($kernel, @ARGV);
__END__
title Red Hat Enterprise Linux Server (2.6.18-128.1.6.el5PAE)
root (hd0,0)
kernel /vmlinuz-2.6.18-128.1.6.el5PAE ro root=/dev/vg00/LogVolRoot