Volodymyr Vrublevskyy

IT geek, Blogger and Traveler

  • Installing Ruby 2.3.1 on Ubuntu

    We will be setting up a Ruby environment on Ubuntu. Installing Ruby 2.3.1 (or earlier). The first step is to install some dependencies for Ruby.

    vovando Avatar
  • Read-only user in PostgreSQL

    Create only read only with limited access to PostgreSQL Database. This user can only SELECT table data and also restricted by schema access. 

    vovando Avatar
    Read-only user in PostgreSQL
  • ,

    Monitor Logs in Real-Time with “Log.io” on CentOS 6/7

    Log.io is a small simple but effective application build on top of Node.js and Socket.io, which allows to monitor Linux servers log files in real time through web interface screen widgets.…

    vovando Avatar
    Monitor Logs in Real-Time with “Log.io”  on CentOS 6/7
  • How to install Python 2.7.6 on CentOS 6.3

    How to install Python 2.7.6 on CentOS 6.3 (6.2 and 6.4 okay too, probably others) CentOS 6.2 ships with Python 2.6.6 and depends on that specific version. Be careful…

    vovando Avatar
    How to install Python 2.7.6 on CentOS 6.3
  • Reserved IP | Microsoft Azure

    If you need to reserve static ip address for your VM, follow the commands below: 1. Set static ip: New-AzureReservedIP -ReservedIPName "postgresql" -Location "West US"  2. Assign static ip,…

    vovando Avatar
  • Restart Unicorn with Capistrano

    The following tasks is what I use for starting  , stopping, restarting and my unicorn server:   desc "Start unicorn" task :start, :except => { :no_release => true } do run…

    vovando Avatar
  • Adding Hyper-V VHDx in an Azure VM

    I have one task for today: to upload hyper-v vhdx image to azure and start vm. So let's try to realize this interesting thing. Do the following steps: (you can…

    vovando Avatar
  • Packer with Azure

    Yes! It's works. First of all you need to install packer. After that – Azure plugin for Packer (you could download executable package or compile proper package with GOlang placing it to directory…

    vovando Avatar
    Packer with Azure
  • Powershell: Check variable for null

    If your working a lot with parameters and inputs you need to check if variables have the right value and are not “null”. You can check that (check if…

    vovando Avatar
    Powershell: Check variable for null
  • ,

    Configuring Cisco on Mac Os through the console port

    You'll need to get a usb-serial adapter and then connect with a console cable.  Connecting to the Console Port with Mac OS X. To connect a Mac OS X system…

    vovando Avatar
    Configuring Cisco on Mac Os through the console port