Using Puppet, what is the correct syntax to declare a variable?

In Puppet, the correct syntax for declaring a variable begins with a dollar sign followed by the variable name. This convention indicates to Puppet that the item is a variable, enabling it to be used later in manifests or modules.

The syntax $var = "value" correctly assigns the string "value" to the variable named var. This allows the variable to store data that can be referenced later in the Puppet code. This syntax helps in managing configurations efficiently, ensuring that repeated values can be easily modified by changing them in only one location.

Other options do not adhere to Puppet's variable declaration syntax. For example, using just var = "value" lacks the necessary dollar sign and would result in an error. Similarly, using declare or define is related to creating resources or defined types rather than simply declaring a variable. As such, understanding the structure of variable declarations is crucial for effective Puppet code writing and management.