Year: 2016

  • Weekly notes 9

    Summer is here and mountain biking trails are calling but keeping up with what happens in the field never stops. This week Apple had their worldwide developers conference which filled up social media although didn’t present anything remarkable. In the other news there was good collection of slides for Java developers, ebook for DevOps and…

  • Docker containers and using Alpine Linux for minimal base images

    Docker containers and using Alpine Linux for minimal base images

    After using Docker for a while, you quickly realize that you spend a lot of time downloading or distributing images. This is not necessarily a bad thing for some but for others that scale their infrastructure are required to store a copy of every image that’s running on each Docker host.… Jatka lukemista →

  • Weekly notes 8

    The Spring has been quite busy at work but Summer is just around the corner and that means either holidays or having some time to learn new things and see how things could be make better. My weekly notes has turned out to be monthly notes but that’s how things sometimes work out.… Jatka lukemista…

  • Avoiding JVM delays caused by random number generation

    The library used for random number generation in Oracle’s JVM relies on /dev/random by default for UNIX platforms. This can potentially block the WebLogic Server process because on some operating systems /dev/random waits for a certain amount of “noise” to be generated on the host machine before returning a result. Although /dev/random is more secure,…

  • Weekly notes 7

    Easter and couple of days of free time is good for taking a break from the routines or finally have some time to develop your personal pet projects. At least my Highkara news reader for iOS needs some UI tests for screenshots and maybe I get to finish my imgur app for tvOS.… Jatka lukemista…

  • Container orchestration with CoreOS at Devops Finland meetup

    Container orchestration with CoreOS at Devops Finland meetup

    Development and Operations, DevOps, is one of the important things when going beyond agile. It’s boosting the agile way of working and can be seen as an incremental way to improve our development practices. And what couldn’t be a good place to improve than learning at meetups how others are doing things.… Jatka lukemista →

  • Problems with installing Oracle DB 12c EE, ORA-12547: TNS: lost contact

    Problems with installing Oracle DB 12c EE, ORA-12547: TNS: lost contact

    For development purposes I wanted to install Oracle Database 12c Enterprise Edition to Vagrant box so that I could play with it. It should’ve gone quite straight forwardly but in my case things got complicated although I had Oracle Linux and the pre-requirements fulfilled. Everything went fine until it was time to run the DBCA…

  • Using Let’s Encrypt SSL certificates on Centos 6

    Using Let’s Encrypt SSL certificates on Centos 6

    Let’s Encrypt is now in public beta, meaning, you can get valid, trusted SSL certificates for your domains for free. Free SSL certificates for everyone! As Let’s Encrypt is relatively easy to setup, there’s now no reason not to use HTTPS for your sites. The needed steps are described in the documentation and here’s short…

  • Weekly notes 6

    This year has started slowly and weekly notes has frozen to monthly notes. This time they tell us i.a. how to put Spring Boot in Docker, useful features of Java EE 7, ponder what all there’s to do to launch your mobile app, read tips how to get better with Node.js… Jatka lukemista →

  • Starting with WeeChat

    Starting with WeeChat

    I’ve been using IRC for some time and although Irssi has served me well, it’s time to try something different. WeeChat is a modular chat client with support for IRC and the interesting part is that it’s possible to use other interfaces like glowing-bear web frontend. WeeChat is similar to Irssi so switching over shouldn’t…