Knowledge Base for IT Professionals, Teachers and Astronauts
When you create a class to be used as the model in a .NET MVC application, the class has to have a parameterless constructor. It is called during the POST when the user clicks the submit button of the form. If the class does not have a parameterless constructor, we will get the following generic …
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All laptops today feature a touchpad, that enables you to move the pointer on the screen. It can be very annoying when your thumb accidentally moves the cursor when you type, even if an external mouse is connected to the computer. Windows 10 provides a checkbox to automatically disable the internal pointing device when you …
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You can verify the checksum of a file with the built-in features of the operating systems On Macintosh and Linux Open the terminal window and execute the commands SHA-256 shasum -a 256 FILE_NAME On Windows CRC32, CRC64, SHA256, SHA1, BLAKE2sp Right-click the file in Windows Explorer and select CRC SHA > * (star) The popup window will …
Upgrade TeamCity to version 10 Create a backup of the database and the server before the upgrade Disable the Chef-Client scheduled task and Chef-Client service to make sure Chef does not alter the server during the upgrade. Disable the authorized agents to stop them picking new jobs. Stop the TeamCity process on the server, If …
To secure Artifactory repositories follow the steps below Log into Artifactory as an administrator On the left select Admin Add users In the Security menu select Users In the upper right select New Create users for admin, writer, and reader. Make sure the Can Update Profile checkbox is NOT checked, so if someone logs in with the service …
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When you try to start a remote desktop connection to a Windows computer on the domain you may get the error message: The User Profile Service failed the sign-in. User profile cannot be loaded. To enable the User Profile update Remote into the computer with a local administrator account, In Windows Explorer open the C:\Users\Default\AppData folder, …
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To access a Git repository Jenkins can use an SSH key. To add the SSH key to the Jenkins server use the following Chef script Store the SSH key in an encrypted data bag called “keys”. { “id”: “ci_private_keys”, “ci_github_key”: “—–BEGIN RSA PRIVATE KEY—–\n…\n—–END RSA PRIVATE KEY—–“, } Add the following to the Jenkins …
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 …
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 …
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