Repository signature verification issues in ubuntu are becoming annoying, I’m getting this after apt-get update : W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://archive.ubuntu.com natty-updates Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key W: [...]

According to Symantec support and many forum posts, Backupexec supports only Ubuntu 9, and nothing for the new versions. Since I have ubuntu 10 running in production and willing to upgrade to 11, I have managed to install support BackupExec agent on my servers without any issue and everything was working fine for the last [...]

If you are just curious, or looking for a way to test or develop .NET web applications under Linux, you should look at the Mono Project. Mono is an open source, cross-platform, implementation of C# and the CLR that is binary compatible with Microsoft.NET based on the ECMA standards for C# and the Common Language [...]

One of the applications that I’m working on uses archived documents, there is no NoSQL here, just plain tiff files with indexes in Oracle database. Everything related to document access, permissions, conversions, watermarking, security, encryption … is managed by the application itself. So I had to keep my cluster permanently connected to a SAN storage [...]

In an ideal system architecture using load balancers in separate nodes is preferred, however it’s also possible to have your load balancers in the same nodes with your applications. I have used in this architecture the same hardware as the previous Master/Master MySQL cluster, including Ubuntu server 10.04 x64, Apache2 as web server, two nodes [...]