CentOS

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Using iRedMail And OpenVPN For Virtual Email Hosting And VPN Services (CentOS 5.4)

Using iRedMail And OpenVPN For Virtual Email Hosting And VPN Services, With Central Authentication Against OpenLDAP (CentOS 5.4)

iRedMail is a shell script that lets you quickly deploy a full-featured mail solution in less than 2 minutes. iRedMail supports both OpenLDAP and MySQL as backends for storing virtual domains and users. This tutorial shows you how to integrate OpenVPN into iredmail's ldap backend on CentOS 5.x, passwords will be stored in ldap and you can change the password though webmail.

Striping Across Four Storage Nodes With GlusterFS On CentOS 5.4

Striping Across Four Storage Nodes With GlusterFS On CentOS 5.4

This tutorial shows how to do data striping (segmentation of logically sequential data, such as a single file, so that segments can be assigned to multiple physical devices in a round-robin fashion and thus written concurrently) across four single storage servers (running CentOS 5.4) with GlusterFS. The client system (CentOS 5.4 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86_64 servers with SATA-II RAID and Infiniband HBA.

Installing Nictool On CentOS 5

Installing Nictool On CentOS 5

Nictool is a free software for managing DNS, but for download we have to register at www.nictool.com; Nictool can export from djbdns, BIND, PowerDNS. All data is stored in MySQL and can be managed over the web using a browser. This tutorial shows how to install Nictool on CentOS 5.2.

Distributed Storage Across Four Storage Nodes With GlusterFS On CentOS 5.4

Distributed Storage Across Four Storage Nodes With GlusterFS On CentOS 5.4

This tutorial shows how to combine four single storage servers (running CentOS 5.4) to one large storage server (distributed storage) with GlusterFS. The client system (CentOS 5.4 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86_64 servers with SATA-II RAID and Infiniband HBA.

Installing Lighttpd With PHP5 And MySQL On CentOS 5.2

Installing Lighttpd With PHP5 And MySQL On CentOS 5.2

Lighttpd is a webserver designed to be secure, fast, standards-compliant, and flexible while being optimized for speed-critical environments. This post shows how to install it with PHP5 and MySQL support on Centos 5.2.

VBoxHeadless - Running Virtual Machines With VirtualBox 3.1.x On A Headless CentOS 5.4 Server

VBoxHeadless - Running Virtual Machines With VirtualBox 3.1.x On A Headless CentOS 5.4 Server

This guide explains how you can run virtual machines with Sun VirtualBox 3.1.x on a headless CentOS 5.4 server. Normally you use the VirtualBox GUI to manage your virtual machines, but a server does not have a desktop environment. Fortunately, VirtualBox comes with a tool called VBoxHeadless that allows you to connect to the virtual machines over a remote desktop connection, so there's no need for the VirtualBox GUI.

Installing PowerDNS With MySQL On CentOS

Installing PowerDNS With MySQL On CentOS

PowerDNS is a MySQL-based DNS server, written in C++ and licensed under the GPL. PowerDNS can be managed through a web interface (PowerAdmin). This guide shows how to install it on CentOS.

Distributed Replicated Storage Across Four Storage Nodes With GlusterFS On CentOS 5.4

Distributed Replicated Storage Across Four Storage Nodes With GlusterFS On CentOS 5.4

This tutorial shows how to combine four single storage servers (running CentOS 5.4) to a distributed replicated storage with GlusterFS. Nodes 1 and 2 (replication1) as well as 3 and 4 (replication2) will mirror each other, and replication1 and replication2 will be combined to one larger storage server (distribution). Basically, this is RAID10 over network. If you lose one server from replication1 and one from replication2, the distributed volume continues to work. The client system (CentOS 5.4 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86_64 servers with SATA-II RAID and Infiniband HBA.

Installation Of BIND As A Secondary (Slave) DNS Server On CentOS

Installation Of BIND As A Secondary (Slave) DNS Server On CentOS

After we have installed BIND as a master DNS server (NS1), we can now try to set up a secondary DNS server (NS2) with BIND on CentOS. NS2 acts as a backup if there are problems with NS1.

High-Availability Storage With GlusterFS On CentOS 5.4 - Automatic File Replication (Mirror) Across Two Storage Servers

High-Availability Storage With GlusterFS On CentOS 5.4 - Automatic File Replication (Mirror) Across Two Storage Servers

This tutorial shows how to set up a high-availability storage with two storage servers (CentOS 5.4) that use GlusterFS. Each storage server will be a mirror of the other storage server, and files will be replicated automatically across both storage servers. The client system (CentOS 5.4 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86_64 servers with SATA-II RAID and Infiniband HBA.

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