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Category: All Linux HowTo’s

All Linux HowTo's

Configure Varnish Cache for Multiple Domains – CentOS/Redhat 6

September 3, 2013 Andrew Galdes 0

This article applies to Varnish 3. This article explains how to configure the Varnish Cache to cache for multiple domains on the same backend server. I’ve used CentOS 6.2 for this example. In this example, Varnish is listening on TCP port 80. The DNS “www” “A” record for the domains

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All Linux HowTo's Security HowTo's

Specifying an SSH private key to use on the command line

July 17, 2013 Andrew Galdes 0

You can specify which private key to use when issuing the Linux “ssh” command. This allows you to use one of many different private keys depending on which server(s) you’re connecting to. ssh -l agix example1.agix.local -i id_rsa.exmaple1 -v The above assumes that you have a private key in the

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All Linux HowTo's

Configure SNMP on CentOS for use with Nagios (monitor disk space)

July 3, 2013 Andrew Galdes 0

This article explains how to configure SNMP for use with Nagios on a CentOS server. It’s assumed you already have Nagios installed but not necessarily configure to use SNMP to monitor a host. We use “Disk Space” monitoring in this article. For this article, i’ve used the following versions: 1.

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All Linux HowTo's

Interpreting ADSL SNR and Attenuation Figures

June 20, 2013 Andrew Galdes 0

This article outlines what you can expect from SNR and Attenuation figures from ADSL modems. The tables below should be used to assist you in troubleshooting ADSL quality issues – even service drop-outs. Attenuation is the loss of signal in a return trip between your ADSL modem and the exchange.

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All Linux HowTo's

Streaming Internet Music for Asterisk 10 “Music On Hold”

June 4, 2013 Andrew Galdes 0

This article explains how to add Music On Hold (or MOH) for Asterisk 10. The music will be streaming from the Internet – in this case, the “ABC News Radio” channel/station. Note that the download of Internet radio data starts when someone goes on hold. And stops when they go

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All Linux HowTo's

MySQL Database Replication Example

June 2, 2013 Andrew Galdes 0

This article explains how to install MySQL 5.1 on Redhat/CentOS and configure replication to a slave MySQL server. In this article, the master host has the IP address “192.168.122.7” and the slave has IP address “192.168.122.6”. Remember to restart the MySQL server if and when you make changes to the

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Andrew Galdes

I'm a systems engineer and security guru. I'm surrounded by experts in their fields and excited to be able to work with such talent.

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