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The Nagios network monitoring and alerting framework lets you easily keep track of a wide variety of hosts and services, and generate reports and alerts targeted to specific teams or individuals. By using plugins, you can further enhance Nagios’s functionality, giving it capabilities not available in the core product. One such plugin lets you monitor the health of your cluster instead of that...

Someday your server will need more disk space. Rather than purchase new hardware, you may be able to take advantage of disk space you already own by using NFS (Network File System), a distributed filesystem for which support is integrated in the Linux kernel. Any machine can host NFS server software to share its disk space, or use an NFS client to make use of that space. NAS is not SANYou...

Stop sending .DOC files as mail attachments! There is a better way!One of the scourges of e-mail is file attachments, and particularly those from people sending files made by their new word-processor or presentation programme that half the people receiving it can't open. While proprietary software vendors love this errant behaviour (it keeps up the pressure for people to re-purchase software they...

This app is very helpful for those that DirecTV. This app can search for your favorite program and set it up to you DirecTV DVR. You must have DirecTV installed and its DvR. The app works really well but fall short on one thing that's you can't look at TV shows on your android device. Hopefully DirecTV can get it right and update the app to do this feature. It a real quick set up and then you are...

This guide explains how you can set up an AoE target and an AoE initiator (client), both running Debian Squeeze. AoE stands for "ATA over Ethernet" and is a storage area network (SAN) protocol which allows AoE initiators to use storage devices on the (remote) AoE target using normal ethernet cabling. "Remote" in this case means "inside the same LAN" because AoE is not routable outside a LAN (this...

Display Current Config for all NIC’s: ifconfigDisplay Current Config for eth0: ifconfig eth0Assign IP: ifconfig eth0 192.168.1.2Ping: ping -c 3 192.168.1.1Assign multiple IP’s: ifconfig eth0:0 192.168.1.2Assign second IP: ifconfig eth0:1 192.168.1.3Disable network card: ifconfig eth0 downEnable network card: ifconfig eth0 upView current routing table: route...

FTP is a very insecure protocol because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure. This article explains how to configure PureFTPd to accept TLS sessions on a CentOS 6.2 server. I do not issue any guarantee that this will work for you!1 Preliminary NoteYou should have a working PureFTPd setup...

A 2011 Gartner survey found that more than half of all enterprises surveyed had adopted some open source software. However, many businesses also need professional support and related services to make open source software viable for their organizations. Commercial open source software vendors fill in the gap for these businesses by providing those additional services while keeping overall...

This document describes how to install a PureFTPd server that uses virtual users from a MySQL database instead of real system users. This is much more performant and allows to have thousands of ftp users on a single machine. In addition to that I will show the use of quota and upload/download bandwidth limits with this setup. Passwords will be stored encrypted as MD5 strings in the database.For...