• DoT for RPZ distribution

      Just a few months ago there were a lot of buzz because IETF in expedited time frame (about one year) accepted DNS over HTTPS (DoH) as a standard (RFC-8484). The discussions about that are still going on because of its controversy. My personal opinion is that DoH is good for personal privacy (if you know how to use it and trust your DNS provider) but it is a security risk for enterprises. DNS over TLS (DoT) is a better alternative for enterprise customers only because it uses a well-defined TCP port but for personal privacy it is not good because of the same reason (easy to block).
      Read more →
    • How to vendor a git into another git

        Discovering git vendor extension.


        Cross-post from my medium blog: https://medium.com/opsops/git-vendor-295db4bcec3a


        I would like to introduce the proper way to handle vendoring of git repositories.


        What is is ‘vendoring’?


        Vendoring is a way to integrate other’s work into your own. It’s the opposite of ‘linking’ against third-party library. Instead of having that library as a dependency, application uses this library as a part of own source code and keep that code ‘inside’ itself.


        Normally, vendoring is done by language tooling: bundler, cargo, pip, etc. But sometimes you need to vendor something not covered by any existing toolset, or something multi-language, that it’s impossible to find the ‘core’ language tool for that.


        The solution for this situation is vendoring on a git level. You have your own git repository (I call it ‘destination repo’), and you want to incorporate some other repository (I call it ‘source repo’) as a directory into your (destination repo).


        The things you expect from a well-designed vendoring system (regardless of Git it is or not):


        • Visibility. You want to know that some code is vendored, means it wasn’t written by committer.
        Read more →
      • Monitoring System for Windows servers on pure SQL, and how I had secretly dragged it into the Production

          A long time ago in a galaxy far, far away there was a company grown from a startup to something much bigger, but for a while the IT department was still compact and very efficient. That company hosted on prem hundreds of virtual Windows servers, and of course these servers were monitored. Even before I joined the company, NetIQ had been chosen as a monitoring solution.

          One of my new tasks was to support NetIQ. The person, who worked with NetIQ before, said a lot about his experience with NetIQ, unfortunately, if I try to put it here it would be just a long line of ‘****’ characters. Soon I realized why. Steve Jobs is probably spinning in his grave looking at the interface like this:

          image
          Read more →