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Operating Systems Linux Red Hat Different connection status between 2 servers Post 303019411 by I Made Dwi on Thursday 28th of June 2018 11:33:54 PM
Old 06-29-2018
Different connection status between 2 servers

Hello All,

Actually, We have a problem in our server (RHEL 7.1), 1st server is used for payment apps like switch card payment (passthru only), and 2nd server is used for Database transaction.
When high transaction there is different connection between Apps Server and DB server, Apps Server sends connection to DB Server, but sometimes that's connection not ESTABLISHED like low traffic (I checked thru netstat in 2 servers). I have changed value Local_port range, and fin_timeout but it wasn't solve this problem, and I think my current kernel needs to update kernel to latest or stable version to solve this.
current kernel : 3.10.0-229.e17.x86_64

Please give me suggest about our this connection problem.

Thank you
Regards
 

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Server::Relay(3pm)					User Contributed Perl Documentation					Server::Relay(3pm)

NAME
Net::SMTP::Server::Relay - A simple relay module for Net::SMTP::Server. SYNOPSIS
use Carp; use Net::SMTP::Server; use Net::SMTP::Server::Client; use Net::SMTP::Server::Relay; $server = new Net::SMTP::Server('localhost', 25) || croak("Unable to handle client connection: $! "); while($conn = $server->accept()) { # We can perform all sorts of checks here for spammers, ACLs, # and other useful stuff to check on a connection. # Handle the client's connection and spawn off a new parser. # This can/should be a fork() or a new thread, # but for simplicity... my $client = new Net::SMTP::Server::Client($conn) || croak("Unable to handle client connection: $! "); # Process the client. This command will block until # the connecting client completes the SMTP transaction. $client->process || next; # In this simple server, we're just relaying everything # to a server. If a real server were implemented, you # could save email to a file, or perform various other # actions on it here. my $relay = new Net::SMTP::Server::Relay($client->{FROM}, $client->{TO}, $client->{MSG}); } DESCRIPTION
The Net::SMTP::Server::Relay module implements simple SMTP relaying for use with the Net::SMTP::Server module. All this module does is to take a given message and iterate through the list of recipients, doing DNS lookups for the associated MX record and delivering the messages. This module makes extensive use of the plethora of other modules already implemented for Perl (specifically the DNS and Net::SMTP modules in this case), and should give but a glimpse of the potential for extending the Net::SMTP::Server's functionality to provide a full-featured SMTP server, native to Perl. The above example illustrates the use of the Net::SMTP::Server::Relay modules -- you simply have to instantiate the module, passing along the sender, recipients, and message. More formally: $relay = new Net::SMTP::Server::Relay($from, @to, $msg); Where $from is the sender, @to is an array containing the list of recipients, and $msg is the message to relay. AUTHOR AND COPYRIGHT Net::SMTP::Server / SMTP::Server is Copyright(C) 1999, MacGyver (aka Habeeb J. Dihu) <macgyver@tos.net>. ALL RIGHTS RESERVED. You may distribute this package under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file. SEE ALSO
Net::SMTP::Server::Server, Net::SMTP::Server::Client perl v5.10.1 1999-12-28 Server::Relay(3pm)
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