Obfuscate the password in the TeamCity UI When a TeamCity build step needs to use a password, there is a way to obfuscate it. In the TeamCity web interface navigate to the project, On the project page open the Parameters page, Click the Add new parameter button, Enter the name of the parameter, the password …
Tag Archives: DevOps
Manage Windows Backups
To manage the Microsoft Windows Backups you can use a command line tool. Open a command prompt as administrator Show the existing backup versions Wbadmin get versions Clean up the backup disk To keep a number of latest backups and delete the rest Wbadmin delete backup -keepversions:NUMBER_OF_BACKUPS_TO_KEEP To keep the latest backup only Wbadmin delete backup …
Generate a GUID in Chef with Ruby
When you need a unique string to name a resource in your Chef scrip, generate a GUID with SecureRandom.uuid To make sure the resource always gets a unique name: log “#{SecureRandom.uuid}” do message ‘My message’ level :info end
Chef custom resource is using the same property name as the called resource
When you create a Chef custom resource, you can call other resources including custom resources you have created. For ease of use it can be convenient to use the same property name as the called resource use. property :delay_mins, Fixnum, default: 3 reboot ‘Hostname was changed’ do reason reboot_reason delay_mins delay_mins …
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How to secure Jenkins
When you install Jenkins, the default settings allow anyone to sign up and administer it. There are many ways to secure Jenkins, the simplest is to disable the user sign up and require login to administer the server. Click sign up in the upper right corner and create an account for yourself On the Jenkins …
Minimum Windows workstation setup to work with Windows servers
If you work on a Mac or Linux workstation and need to script and administer Windows servers, you need a few Windows tools. You can create a Windows Virtual Machine hosted in the free Virtual Box from Oracle or in VMware Fusion. For installation instructions see Install the DevOps development tools on Windows Notepad++ Chocolatey …
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NoMethodError: undefined method `exists?’ for Chef::Resource::File:Class
When you create a Chef custom resource and use the File class, you need to make slight a change in the syntax you use. In a Chef recipe you can use if File.exists?(“#{FileName}”) to check for the existence of a file. If we use the same line in a Chef custom resource, we get the …
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Migrate databases to and from AWS RDS instances
Amazon Web Services do not provide tools to migrate data to, from and between AWS RDS instances. There is a free utility that can do the job. SQL Server Management Studio (SSMS) Install Microsoft SQL Server Management Studio (SSMS), because the utility uses libraries from it. Download the installer for free from https://msdn.microsoft.com/en-us/library/mt238290.aspx SQL Azure Migration …
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Chef file locations
The Chef file and folder locations are different on Linux and Windows machines. This article explains the purpose of each file and the location. Summary Linux Windows Cookbook location /var/chef/cache/cookbooks C:\chef\cache\cookbooks Chef Client run log /var/log/chef.log First run only C:\chef\chef-client.log Subsequent Chef client runs C:\chef\log\client.log Error log /var/chef/cache/chef-stacktrace.out C:\chef\cache\chef-stacktrace.out Ohai output /var/chef/cache/failed-run-data.json C:\chef\cache\failed-run-data.json Recommended location for …
Keep multiple versions of applications on Macintosh
Most of the DevOps tools are still in beta versions, many times the new version is not compatible with your existing scripts or have an error that stops your scripts working. To be able to keep multiple versions of the applications and easily switch between them, create symbolic links and point to the version you …
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