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Measuring Linux Latency With LatencyTOP On Ubuntu 8.10 And Debian Lenny
LatencyTOP is a tool that lets you identify where in the system latency is happening, and what kind of operation/action is causing the latency to happen. This article shows how you can use LatencyTOP on Ubuntu 8.10 and Debian Lenny.
Installing KVM Guests With virt-install On Ubuntu 8.10 Server
Unlike virt-manager, virt-install is a command line tool that allows you to create KVM guests on a headless server. You may ask yourself: "But I can use vmbuilder to do this, why do I need virt-install?" The difference between virt-install and vmbuilder is that vmbuilder is for creating Ubuntu-based guests, whereas virt-install lets you install all kinds of operating systems (e.g. Linux, Windows, Solaris, FreeBSD, OpenBSD) and distributions in a guest, just like virt-manager. This article shows how you can use it on an Ubuntu 8.10 KVM server.
How To Set Up Apache2 With mod_fcgid And PHP5 On Ubuntu 8.10
This tutorial describes how you can install Apache2 with mod_fcgid and PHP5 on Ubuntu 8.10. mod_fcgid is a compatible alternative to the older mod_fastcgi. It lets you execute PHP scripts with the permissions of their owners instead of the Apache user.
High-Availability Storage Cluster With GlusterFS On Ubuntu
In this tutorial I will show you how to install GlusterFS in a scalable way to create a storage cluster, starting with 2 servers on Ubuntu 8.04 LTS server. Files will be replicated and splitted accross all servers which is some sort of RAID 10 (raid 1 with < 4 servers). With 4 servers that have each 100GB hard drive, total storage will be 200GB and if one server fails, the data will still be intact and files on the failed server will be replicated on another working server. 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 server with SATA-II RAID and Infiniband HBA.
Virtual Hosting With Proftpd And MySQL (Incl. Quota) On Ubuntu 8.10
This document describes how to install a Proftpd 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 with this setup.
How To Set Up WebDAV With Apache2 On Ubuntu 8.10
This guide explains how to set up WebDAV with Apache2 on an Ubuntu 8.10 server. WebDAV stands for Web-based Distributed Authoring and Versioning and is a set of extensions to the HTTP protocol that allow users to directly edit files on the Apache server so that they do not need to be downloaded/uploaded via FTP. Of course, WebDAV can also be used to upload and download files.
Installing Xen 3.3 With Kernel 2.6.27 On Ubuntu 8.10 (x86_64)
This tutorial shows how you can install Xen 3.3 on an Ubuntu 8.10 host (dom0). Xen 3.3 is available from the Ubuntu 8.10 repositories, but the Ubuntu 8.10 kernels (2.6.27-x) are domU kernels, i.e., they work for Xen guests (domU), but not for the host (dom0). Therefore we need to build our own dom0 kernel. This guide explains how to do this with a 2.6.27 kernel.
Watching Hard Drive Activity With iotop On Ubuntu 8.10 And Debian Lenny
This article shows how you can watch your hard drive activity with iotop on Ubuntu 8.10 and Debian Lenny. iotop watches I/O usage information output by the Linux kernel and displays a table of current I/O usage by processes or threads on the system. iotop displays columns for the I/O bandwidth read and written by each process/thread during the sampling period. It also displays the percentage of time the thread/process spent while swapping in and while waiting on I/O. In addition the total I/O bandwidth read and written during the sampling period is displayed at the top of the interface.
Set Up Ubuntu Server With EHCP (LAMP, DNS, FTP, Mail)
This tutorial will help you setup a web server to host multiple domains. We will use EHCP, a free control panel, to manage the server. The tutorial should be easy to follow even for beginners and you'll probably need about an hour to have your server up & running. You will need a unique static ip address for your server. This can be behind your nat router as long as you set up port forwarding. You will need to know the ip address you want to assign to the server, it's subnet mask, the default gateway and the ip for the dns server.
Desktop Search In Ubuntu Intrepid (And Debian) In KDE 4.2
Ubuntu Intrepid 8.10 features an inbuilt desktop search. Unfortunately I never managed to get it to work right and I tried a lot of things. So I finally went on irc.freenode.org into the #strigi channel and asked for help. Lucky me Phreedom in there gave me a helping hand. Why Nepomuk doesn't work by default is still a mystery. I think this is related to Redland instead of Soprano. Unfortunately, as Phreedom told me, the Ubuntu and Debian maintainers don't supply Soprano with the current builds. Also his recommendation is to use KDE 4.2 (Kubuntu 8.10 comes with KDE 4.1).