[ic] mod_interchange and Apache MaxClients

Ron Phipps rphipps at reliant-solutions.com
Thu Nov 17 03:20:27 EST 2005

> From: interchange-users-bounces at icdevgroup.org
> bounces at icdevgroup.org] On Behalf Of John1
> Sent: Wednesday, November 16, 2005 5:03 PM
> Fantastic, thanks Ron, just implemented it!  It occurs to me that it
> be
> useful to call a few system commands before restarting interchange,
and to
> add the output from these commands to the alert e-mail sent.

Thanks for the commands.  Here is the updated script:


use LWP;

my $url = 'http://www.yoursite.com/checkic.html';

## CMD to return report values
my $REPORT_COMMAND = "/root/scripts/iccheckcommands.sh";

## CMD to restart
my $IC_COMMAND = "/root/scripts/icrestart.sh";

## Where is sendmail?
my $SENDMAIL_CMD = "/usr/sbin/sendmail";

## what should the subject be?
my $MAIL_SUBJECT="Alert!";

## who should we send from?
my $MAIL_SENDER="root\@yoursite.com";

## what mail account should we alert to?
my $MAIL_RECEIVER = "alerts\@yoursite.com";

my $browser = LWP::UserAgent->new;

my $count = 0;
my $up = 0;

while ($count <= 4) {
        my $response = $browser->get($url);
        if ($response->content =~ m/UP/) {
                $count = 5;
                $up = 1;

if ($up == 1) {
} else {
        my $output = `$REPORT_COMMAND`;
        system $IC_COMMAND;
        mail_admin("IC restarted! $output");
        print "IC restarted!";

sub mail_admin {
        my $mail = "From: $MAIL_SENDER <>\nTo: $MAIL_RECEIVER\nSubject:
$MAIL_SUBJECT\nX-Priority: 1\n\n$_[0]\n";
        print STDERR $mail if $DEBUG;
        return if $NO_MAIL;
        open SENDMAIL, "| $SENDMAIL_CMD -t" and
        print SENDMAIL $mail and
        close SENDMAIL  or
        die "Failed to send alert mail to $MAIL_SENDER: $!";

Create a file called iccheckcommands.sh with the following contents and
update $REPORT_COMMAND with the path to this file, make sure it's


echo ""
echo ""
echo ""
echo "Connections to Apache port 80"
netstat -nt | grep :80 | wc -l

echo "Connections to Apache port 443"
netstat -nt | grep :443 | wc -l

echo ""
echo "Apache processes"
ps -elf | grep -c httpd
echo ""

echo "IC processes"
ps -elf | grep -c live48
echo ""

echo "MySQL processes"
ps -elf | grep -c mysqld
echo ""

echo "Number of connections each IP has"
netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n

Please post if you add more commands that you find useful so that our
emails contain the same information.


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