CentOS

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Set Up Squid Siblings On CentOS 6.3 With WCCP

Set Up Squid Siblings On CentOS 6.3 With WCCP

This tutorial will walk you through setting up a couple of outbound Squid proxy sibling servers running on CentOS 6.3 and have them connected to your gateway using WCCP. This will not cover the tuning of Squid in terms of cache performance.

Using mod_spdy With Apache2 On CentOS 6.3

Using mod_spdy With Apache2 On CentOS 6.3

SPDY (pronounced "SPeeDY") is a new networking protocol whose goal is to speed up the web. It is Google's alternative to the HTTP protocol and a candidate for HTTP/2.0. SPDY augments HTTP with several speed-related features such as stream multiplexing and header compression. To use SPDY, you need a web server and a browser (like Google Chrome and upcoming versions of Firefox) that both support SPDY. mod_spdy is an open-source Apache module that adds support for the SPDY protocol to the Apache HTTPD server. This tutorial explains how to use mod_spdy with Apache2 on CentOS 6.3.

Installing Nagios 3.4.4 On CentOS 6.3

Installing Nagios 3.4.4 On CentOS 6.3

Nagios is a monitoring tool under GPL licence. This tool lets you monitor servers, network hardware (switches, routers, ...) and applications. A lot of plugins are available and its big community makes Nagios the biggest open source monitoring tool. This tutorial shows how to install Nagios 3.4.4 on CentOS 6.3.

Striping Across Four Storage Nodes With GlusterFS 3.2.x On CentOS 6.3

Striping Across Four Storage Nodes With GlusterFS 3.2.x On CentOS 6.3

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 6.3) with GlusterFS. The client system (CentOS 6.3 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.

Distributed Storage Across Four Storage Nodes With GlusterFS 3.2.x On CentOS 6.3

Distributed Storage Across Four Storage Nodes With GlusterFS 3.2.x On CentOS 6.3

This tutorial shows how to combine four single storage servers (running CentOS 6.3) to one large storage server (distributed storage) with GlusterFS. The client system (CentOS 6.3 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.

How To Install A Streaming Audio Server With Icecast 2.3.3 On CentOS 6.3 x86_64 Linux

How To Install A Streaming Audio Server With Icecast 2.3.3 On CentOS 6.3 x86_64 Linux

This tutorial explains creating your own streaming audio server with Icecast (OGG/MP3). Icecast was designed to stream any audio file if a appropiate streaming client is available. For OGG/Vorbis you can use ices and for MP3 icegenerator. Here is a small tutorial how to set up Icecast for streaming OGG/Vorbis and MP3.

Installing Adito/OpenVPN-ALS On CentOS

Installing Adito/OpenVPN-ALS On CentOS

OpenVPN-ALS, formerly known as Adito, is not to be confused with OpenVPN. They both brilliant tools that work in completely different things, but in a similar way. Confused? Excellent… OpenVPN-ALS (from now on known as Adito, because I find it less confusing) is a browser based SSL VPN that enables you to acess resources on your own network, even if you are behind a restrictive proxy and/or firewall.

Distributed Replicated Storage Across Four Storage Nodes With GlusterFS 3.2.x On CentOS 6.3

Distributed Replicated Storage Across Four Storage Nodes With GlusterFS 3.2.x On CentOS 6.3

This tutorial shows how to combine four single storage servers (running CentOS 6.3) 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 6.3 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.

Install Openldap From Source And Configure Multi-Master Replication

Install Openldap From Source And Configure Multi-Master Replication

Going forward to my previous document on setting up a Qmail Server with Openldap, I am now sharing a doc on how we can set up an Openldap in multi-master replication mode. So If you want more than one ldap-server for redundancy here we go.

High-Availability Storage With GlusterFS 3.2.x On CentOS 6.3 - Automatic File Replication (Mirror) Across Two Storage Servers

High-Availability Storage With GlusterFS 3.2.x On CentOS 6.3 - Automatic File Replication (Mirror) Across Two Storage Servers

This tutorial shows how to set up a high-availability storage with two storage servers (CentOS 6.3) 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 6.3 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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