Articles tagged with TeamCity

  1. God object
    07 Feb 2016
    1. A year ago we had an issue using Git from TeamCity “JSchException: Algorithm negotiation fail” due to diffie-hellman-group-exchange-sha256 wasn’t supported. (see Git connection fails due to unsupported key exchange algorithm on JetBrains issue tracker)

      Today we had a similar issue with using the TeamCity plugin for RubyMine.
      Our TeamCity installation is served through a reverse proxy by an Apache web server. The only common algorithm between Java and our TLS configuration is TLS_DHE_RSA_WITH_AES_128_CBC_SHA.

      Due to Java’s JCE provider having a key size upper limit of 1024, since Java 8 it is 2048, the connection fails because we require at least 4096. In RubyMine you get the Message “Login error: Prime size must be multiple of 64, and can only range from 512 to 2048 (inclusive)”.

    2. To fix this on a Debian “Jessie” 8 system with OpenJDK 8 installed follow these steps.

      Install the Bouncy Castle Provider:

      sudo aptitude install libbcprov-java

      Link the JAR in your JRE:

      sudo ln -s /usr/share/java/bcprov.jar /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/bcprov.jar 

      Modify the configuration /etc/java-8-openjdk/security/

  2. God object
    05 Feb 2013
    1. I just upgraded our continuous integration server to TeamCity 8 EAP.
      I am really excited about the new functionality to group projects and create subprojects which will be introduced in 8.0. It will greatly help organizing related projects.

      If you never heard of TeamCity and are looking for a great CI server, I can only encourage you to give it a try. The reason for us to choose TeamCity was the great support for Ruby. It supports rvm, gemsets, bundler, rspec and integrates nicely in RubyMine through a plugin. It also has support for feature branches which is really great if you use Git with such a branching model.