Guides | Linuxaria

Manage easyly Postfix with Postfixadmin

Mar 022013

Postfix it’s a great mailserver, but it’s not the easiest of the beast to tame if you aren’t an expert system administrator and just want to setup a mail service for your server and domain, so today I’ll show you how to install and configure PostfixAdmin a web based interface used to manage mailboxes, virtual domains and aliases. It also features support for vacation/out-of-the-office messages.

This software is compatible with different databases and IMAP/POP3 server, in the following article I’ll use Mysql as database server, on a Centos 6 Linux server.

Installation of Seafile, open source Dropbox alternative for teams

Articles, Guides 5 Responses »

Feb 252013

In the past I’ve tested ownCloud a good solution for hosting a personal solution of cloud storage for your files, or perhaps your team, but there is also an interesting alternative: Seafile another open source file synchronization tool, it comes with Dropbox-like file syncing, but is designed to be better suited to teamwork with some of the features that are oriented to this such as:

1) Users can create and join groups, then share files to the group. This makes it convenient for teamwork.
2) Files are organized into libraries, each be selectively synced to your computer. Libraries can be synced with any local folders.
3) Online file collaboration features, such as PDF and Office file preview and file commenting.

You can build a file sharing and syncing service for your team on your servers with ease.
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How to Monitor User Activity on Linux with psacct or acct

Guides No Responses »

Feb 232013

On any server it’s important to have the most information as possible on what’s going on in real time with tools as pidstat and glances, but it’s also important to collect all the activity done by all the users and processes that are running, to analyze them at a later time or in case of problems of any kind (performance, security, capacity).

psaact as well as acct are both open source application that are used for monitoring user activity on a system. They run in the background keeping track of user activity on a system and the resources consumed by services such as MySQL, Apache, FTP, SSH, et al.

Now with these applications one will be able to track not only user activity, but that of all administrators as well that is performed on a particular server. Consequently, you can make use of this program to know what your users are doing at any given point in time and know what commands they are using as well as be aware of how long it is they are spending on a server.
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dig – Linux DNS Lookup utility cheat sheet

Guides, Pills 1 Response »

Feb 182013

An interesting small and quick, cheat sheet for the command dig found on http://www.hackersgarage.com/

Dig – Domain Information Groper is a light weight Linux utility for querying DNS records. It is widely used to diagnose DNS servers, troubleshoot DNS servers, purge DNS Cache using external DNS server and dozen of great features it provides.

Here i am sharing quick cheat sheet of dig – DNS Lookup utility that every System/Network administrator should have print out at their desk.

In these examples, 8.8.8.8 is a Google Public DNS Server that you can use in /etc/resolv.conf

Open Source ERP software

Articles, Guides, Reviews 3 Responses »

Feb 172013

Recently I’ve made some researches for a good ERP software, open source of course, and so I want to share some of the product I’ve found while doing this small search. As first thing a definition for ERP:

Enterprise resource planning (ERP) systems integrate internal and external management information across an entire organization—embracing finance/accounting, manufacturing, sales and service, customer relationship management, etc. ERP systems automate this activity with an integrated software application. The purpose of ERP is to facilitate the flow of information between all business functions inside the boundaries of the organization and manage the connections to outside stakeholders

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