Am Freitag, 5. Mai 2006 14:36 schrieb Tiago Cruz:
> Now, I'm just try find a way to monitory all the servers and discover how
> have a unsynchronized clock, but I'm not sure that what I have to do :)
I've made a script (long before I began to use nagios) which is run by cron
twice a day on every host which runs xntpd. It checks if ntpd is running, if
the host has a reference clock and if it is synchronized to it and so on. It
logs to syslog and send a Mail on failure.
Maybe it is useful to you:
-- snipp -----------------------------------------------------------------
#!/usr/bin/perl
# #!/usr/nsue/contrib/perl/bin/perl
# $Header: /usr/local/share/cvs/Tools/chktime,v 1.6 2006/03/08 14:14:36
rfertig Exp $
# (c)2001 Rene Fertig <[EMAIL PROTECTED]>
# Dieses Script prüft
# 1. ob der xntpd läuft
# 2a. ob dieser eine Reference-Clock hat
# 2b. ob eine Verbindung zu dieser aufgebaut werden kann
# 3. ob die System-Zeit von der Referenz-Zeit abweicht
# 4. ob die System-Zeit von der CMOS-Uhr abweicht
# Das Ergebnis wird an den syslog-Demon mit dem Facility local3.info
# übergeben.
# --------------------------------------------------------------------
use Getopt::Std;
use Sys::Hostname;
my $host = hostname();
$facility = "local3.info";
# Absender für die Mail
my $sender = "chktime";
# Mailprogramm:
my $mailer = "/usr/sbin/sendmail -t";
# BCC:
my $bcc = "[EMAIL PROTECTED]";
# Reply-to
my $replyto = "[EMAIL PROTECTED]";
# ---- Parameter verarbeiten ----------------------------------------
$usage = "USAGE: $0 [-d] [-m mail_to]\n\t-d\tdebug-mode\n\t-m\tsend
error-messages via mail\n";
unless(getopts("m:dh?", \%option)) {
die "$usage";
}
if(defined $option{m}) {
$mailto = $option{m};
} else {
$mailto = "";
}
if(defined $option{d}) {
$debug = 1;
} else {
$debug = 0;
}
if(defined $option{h} or defined $option{"?"}) {
die "$usage";
}
# -------------------------------------------------------------------
my $error = 0;
if($peers = `ntpq -p`) {
$_ = $peers;
/\n\*([\w-]+)[\s\.]/;
if($1 ne "") {
$refclk = $1;
} else {
$refclk = "No RefClk!";
$error = 1;
}
} else {
$refclk = "Unable to run ntpq! Is xntpd running?";
$error = 1;
}
print "Reference-Clock: $refclk\n" if($debug);
if($refclk ne "No RefClk!") {
open NDATE, "ntpdate -qd $refclk 2>/dev/null |"
or die "�ger mit ntpdate: $!\n";
while(<NDATE>) {
chomp;
# print "NDATE: $_\n";
SWITCH: {
/^originate timestamp:/ && do {
/^.+:\s+(\w+\.\w+)\s+([\w ,:.]+)$/;
if($1 eq "00000000.00000000") {
$reftime = "not available";
$error = 1;
} else {
$reftime = $2;
}
last SWITCH;
};
/^transmit timestamp:/ && do {
/^.+:\s+(\w+\.\w+)\s+([\w ,:.]+)$/;
if($1 eq "00000000.00000000") {
$systime = "not available";
$error = 1;
} else {
$systime = $2;
}
last SWITCH;
};
/^offset / && do {
/^offset\s+([\w .-]+)$/;
$offset = $1;
last SWITCH;
};
}
}
}
if($debug) {
print "Ref-Time: $reftime\n";
print "Sys-Time: $systime\n";
print "Offset : $offset sec.\n";
}
if($hwclock=`hwclock`) {
# nix
} else {
$hwclock="not available";
$error = 1;
}
print "HW-Time: $hwclock\n" if($debug);
if($refclk ne "No RefClk!") {
$logstr = "RefClk=$refclk; RefTime=$reftime; SysTime=$systime;
Offset=$offset; HWClk=$hwclock;"
} else {
$logstr = "RefClk=$refclk (cannot determine RefTime, SysTime and Offset);
HWClk=$hwclock;"
}
system("/bin/logger -p $facility -t TIMECHECK \"$logstr\"") == 0
or die "Upps, kann logger nicht ausführen! $?\n";
if($error && $mailto ne "") {
open(MAIL,"|$mailer") or die "Upps, konnte Shell für Mail nicht �öffnen!";
print MAIL "From: $sender\n";
print MAIL "To: $mail_to\n";
print MAIL "Bcc: $bcc\n";
print MAIL "Reply-To: $replyto\n";
print MAIL "Subject: chktime-failure at $host\n";
print MAIL "\n";
print MAIL $logstr;
close MAIL;
}
-- snipp -----------------------------------------------------------------
Perhaps you have to correct some linebreaks which are made by the mailer.
Bye, René
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