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Distributed Replicated Storage Across Four Storage Nodes With GlusterFS On Debian Lenny

Distributed Replicated Storage Across Four Storage Nodes With GlusterFS On Debian Lenny

This tutorial shows how to combine four single storage servers (running Debian Lenny) 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 (Debian Lenny 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 On Debian Lenny

Distributed Storage Across Four Storage Nodes With GlusterFS On Debian Lenny

This tutorial shows how to combine four single storage servers (running Debian Lenny) to one large storage server (distributed storage) with GlusterFS. The client system (Debian Lenny 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 Set Up Journaled Quota On Debian Lenny

How To Set Up Journaled Quota On Debian Lenny

This tutorial shows how you can set up journaled quota on a Debian Lenny system. With journaled quota, you don't need to run quotacheck after an unclean shutdown. Journaled quota works on ext3 and ext4 file systems.

Setting Up A High-Availability Load Balancer With HAProxy/Keepalived On Debian Lenny

Setting Up A High-Availability Load Balancer (With Failover And Session Support) With HAProxy/Keepalived On Debian Lenny

This article explains how to set up a two-node load balancer in an active/passive configuration with HAProxy and keepalived on Debian Lenny. The load balancer sits between the user and two (or more) backend Apache web servers that hold the same content. Not only does the load balancer distribute the requests to the two backend Apache servers, it also checks the health of the backend servers. If one of them is down, all requests will automatically be redirected to the remaining backend server. In addition to that, the two load balancer nodes monitor each other using keepalived, and if the master fails, the slave becomes the master, which means the users will not notice any disruption of the service. HAProxy is session-aware, which means you can use it with any web application that makes use of sessions (such as forums, shopping carts, etc.).

High-Availability Storage With GlusterFS On Debian Lenny - Automatic File Replication Across Two Storage Servers

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

This tutorial shows how to set up a high-availability storage with two storage servers (Debian Lenny) 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 (Debian Lenny 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.

iRedMail: Mail Server With LDAP, Postfix, RoundCube, Dovecot, ClamAV, SpamAssassin, Amavisd (Debian 5.0.1)

iRedMail: Mail Server With LDAP, Postfix, RoundCube/SquirrelMail, Dovecot, ClamAV, SpamAssassin, Amavisd, DKIM, SPF On Debian 5 (Lenny)

iRedMail is a shell script that lets you quickly deploy a full-featured mail solution in less than 2 minutes. Since iRedMail 0.5, it supports Debian 5.0.1 (it supports both i386 and x86_64). Its object is to make a Linux mail server installation and configuration simple and easy to use. iRedMail supports both OpenLDAP and MySQL as backends for storing virtual domains and users.This tutorial shows how to use OpenLDAP as the backend.

Creating An NFS-Like Standalone Storage Server With GlusterFS On Debian Lenny

Creating An NFS-Like Standalone Storage Server With GlusterFS On Debian Lenny

This tutorial shows how to set up a standalone storage server on Debian Lenny. Instead of NFS, I will use GlusterFS here. The client system 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 Compile virt-df, virt-top, virt-mem & virt-ctrl On Debian Lenny

How To Compile virt-df, virt-top, virt-mem & virt-ctrl On Debian Lenny

This short guide explains how you can build virt-df, virt-top, virt-mem and virt-ctrl from the sources on a Debian Lenny system. These tools are currently available for Fedora in binary format.

Integrating eAccelerator Into PHP5 And Lighttpd (Debian Lenny)

Integrating eAccelerator Into PHP5 And Lighttpd (Debian Lenny)

This guide explains how to integrate eAccelerator into PHP5 and lighttpd on a Debian Lenny system. From the eAccelerator project page: "eAccelerator is a free open-source PHP accelerator, optimizer, and dynamic content cache. It increases the performance of PHP scripts by caching them in their compiled state, so that the overhead of compiling is almost completely eliminated. It also optimizes scripts to speed up their execution. eAccelerator typically reduces server load and increases the speed of your PHP code by 1-10 times."

Setting Up A PXE Install Server For Multiple Linux Distributions On Debian Lenny

Setting Up A PXE Install Server For Multiple Linux Distributions On Debian Lenny

This tutorial shows how to set up a PXE (short for preboot execution environment) install server on Debian Lenny. A PXE install server allows your client computers to boot and install a Linux distribution over the network, without the need of burning Linux iso images onto a CD/DVD, boot floppy images, etc. This is handy if your client computers don't have CD or floppy drives, or if you want to set up multiple computers at the same time (e.g. in a large enterprise), or simply because you want to save the money for the CDs/DVDs. In this article I show how to configure a PXE server that allows you to boot multiple distributions (i386 and x86_64): Debian Lenny, Ubuntu 9.04, Fedora 10, CentOS 5.3, OpenSuSE 11.1, and Mandriva 2009.1.

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