If you work in the AWS environment and launch and terminate servers frequently the same IP is reused many times. When you try to connect to a new server with SSH and the IP address is already in the known_hosts file you will get the following error message. @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! …
Author Archives: Laszlo Pinter
SSL certificate is missing after installing ChefDK
When you install a new version of ChefDK and try to run Test Kitchen converge you may get the following error message >>>>>> ——Exception——- >>>>>> Class: Kitchen::ActionFailed >>>>>> Message: Failed to complete #create action: [SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed To solve the problem add the following to the Windows …
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Winrm is missing after installing ChefDK
When you install the new version of ChefDK you may get the following error message when you try to run Test Kitchen !!!!!! The `winrm` gem is missing and must be installed or cannot be properly activated. Run `gem install winrm –version ‘[“~> 1.6”]’` or add the following to your Gemfile if you are using …
Berkshelf is missing after installing ChefDK
When you install a new version of ChefDK and try to run Test Kitchen the following error message may appear !!!!!! The `berkshelf’ gem is missing and must be installed or cannot be properly activated. Run `gem install berkshelf` or add the following to your Gemfile if you are using Bundler: `gem ‘berkshelf’`. To reinstall …
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EC2 driver is missing after installing ChefDK
After installing a new version of ChefDK you may get the following error message when you try to run Test Kitchen: Message: Could not load the ‘ec2’ driver from the load path. Please ensure that your driver is installed as a gem or included in your Gemfile if using Bundler. To install the EC2 driver …
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Error in Test Kitchen after installing ChefDK
You may get the following error when you try to run Test Kitchen after installing the latest version of ChefDK: $ kitchen C:/Ruby22/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require’: cannot load such file — dl/import (LoadError) from C:/Ruby22/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require’ from C:/Ruby22/lib/ruby/gems/2.2.0/gems/net-ssh-2.9.2/lib/net/ssh/authentication/pageant.rb:1:in `<top (required)>’ from C:/Ruby22/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require’ from C:/Ruby22/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require’ from C:/Ruby22/lib/ruby/gems/2.2.0/gems/net-ssh-2.9.2/lib/net/ssh/authentication/agent/socket.rb:5:in `<top (required)>’ from C:/Ruby22/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require’ from C:/Ruby22/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require’ from …
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DevOps interview questions
When you are interviewing candidates for a DevOps position this collection of resources can help to ask the right questions. Wide variety of questions on the broad spectrum of tasks needed for the DevOps work. https://github.com/spikenode/DevOps-Interview-Questions
Extract data from JSON with Ruby
Chef uses Ruby as the scripting language. If you need to extract data out from a JSON string you can use the following script # Save the JSON values instance_data_drive_config = ‘{“size”:”500″,”type”:”io1″,”iops”:”15000″}’ # Parse the JSON to a hash data = JSON.parse(instance_data_drive_config) # Declare the variables size = ” type = ” iops = ” …
DJI Phantom 4 firmware update stops at 92%
When I update the DJI Phantom 4 firmware with DJI Assistant 2 most of the times the update stops at 92%. If I turn off the DJI Phantom 4 and turn it on again the rear lights blink fast yellow (or fast white), and the DJI Assistant 2 application cannot recognize the DJI Phantom 4 anymore …
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Git configuration
If you use 2-factor authentication in GitHub, generate a 40 character Personal Access Token that you can use as a password to access GitHub repositories. Create a Personal Access Token to use it as password in the Git client Log into GitHub and in the pull down at the upper right select Settings, On the left …