knife:tldr:4d36f

The command "knife node edit ${node_name}" is used in the Knife tool, which is a command-line interface (CLI) provided by Chef, a popular configuration management tool. This specific command is used to edit the attributes or properties of a specific node in the Chef server.

Here is what each part of the command means:

• "knife": Refers to the Knife tool, which is used for interacting with the Chef server via the command line.
• "node": Specifies that the operation being performed is related to a node in the Chef infrastructure. A node represents a system that Chef manages, such as a virtual machine or a server.
• "edit": Instructs Knife to edit the specified node.
• "${node_name}": The placeholder "${node_name}" should be replaced with the actual name of the node you want to edit. For example, if you want to edit a node named "webserver", replace "${node_name}" with "webserver" in the command.

By running this command, you can open the attributes of the specified node in a text editor where you can make changes. Attributes define the configuration of a node, such as package versions, network settings, or any custom settings defined by the Chef recipes or cookbooks applied to the node. After making the desired changes, saving the file and closing the text editor, the edited attributes will be updated in the Chef server for that particular node.