Recently I have been facing some issues with locales in Debian and Ubuntu based Xen based virtual servers. These typically appear while running the man command and apt-get or dpkg commands.
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Locale Problems in Debian and Ubuntu
Migrating RHEL 4.7 to CentOS 4.7
Recently I was asked by one of my clients to convert their RHEL system to CentOS after their RHEL subscription expired. At the time of migration the server was running RHEL 4 update 7. Based on the current version, I chose the target version as CentOS 4.7.
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OpenSolaris – Desktop Experience – Part 1
Installation
Few days back I installed OpenSolaris 2008.11 on my aging IBM R50e Thinkpad. My previous experience with OpenSolaris Solaris Express builds were not that great from desktop point of view. Primary problem being no support for the Intel Pro Wireless adapter IPW2200B/G and the multimedia support. This time LFY distributed a live CD of OpenSolaris 2008.11, so I thought of trying my hands on it. Immediately after booting I was impressed with the desktop which came up and reminded me of my first Ubuntu experience. A quick glance at the top-right panel and I saw two network interfaces iwi0 and iprb0. Hmmm, so it picked up both my network interfaces. Its a pity that unlike last time, I do not have a wireless network to connect to, but I was able to see the list of all networks which could be found. The overall interface looked good and quite similar to Ubuntu, so it was familiar to me.
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Balancing Traffic Across Data Centres Using LVS
The LVS (Linux Virtual Server) project was launched in 1998 and is meant to eliminate Single Point of Failures (SPOF). According to the linuxvirtualserver.org website: “LVS is a highly scalable and available server built on a cluster of real servers, with the load balancer running on Linux. The architecture of the server cluster is fully transparent to the end user, and the users interact as if it were a single high-performance virtual server. The real servers and the load balancers may be interconnected by either a high speed LAN or by a geographically dispersed WAN.”
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Adding/Removing the Resources from a Running Solaris Zone
The zonecfg command is used to configure the zone. We can add and remove a resource from the solaris zone using zonecfg. Any change to zonecfg needs a reboot, but sometimes it is a requirement to dynamically add new resources to the zone without rebooting the zone. Also, we need to make sure that the addition of new resources to the zone are persistent across reboots.
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