Chef Recipe If Condition

Therefore it ignores anything passed to it including only if or not if.

Chef recipe if condition. To log a fatal message to the logger and stderr and then stop a chef infra client run. I have a file that i want deleted when chef finds it exists. After all the recipes have been loaded and all the resources have been defined chef enters the second phase the convergence phase. Include recipe only if or not if.

File path foo do action delete end if path foo exists and the chef file documentation is not showing anything like file path foo do condition exists action delete end. All recipes are loaded in a specific order and then the actions specified within each of them are identified. This is also referred to as the compile phase. Again i m wary of the documentation that states.

Remy van elst text only version of this article. In recipe 1 i iterate through apps on the node and i want to include recipe 2 if application 2 is on the node or recipe 3 if app 3 is on the node. Chef infra client processes recipes in two phases. A recipe is basically a collection of resource definitions that will create a step by step set of instructions to be executed by the nodes.

Alternatively i d like to prevent the notifies clause of a template on the same condition. I d like to create an execute block which is only run when some specific condition is met in this case if an interface wlan0 is present. There the actual implementation of the resources which performs the changes create files and directories in stall packages is run. I am not finding any google examples of something like.

Since this behavior is 100 ruby do this in a recipe the same way here as anywhere else. Is the only way to use a. First each resource in the node object is identified and a resource collection is built. The return keyword can be used to stop processing a recipe based on a condition but continue processing a chef infra client run.

The following sections show various approaches to ending a chef infra client run. An if statement can be used to specify part of a recipe to be used when certain conditions are met. How can i describe that in a recipe. Below you can find a simple example of a recipe that will run apt get update and install vim afterwards.

Only in this phase the only if and not if conditions are checked. If i have both apps on the node i want to make sure that the first iteration that includes recipe 2 is not still included in recipe 1 when the next iteration starts to run for app 3. Chef recipes are written using ruby. Chef supports including other recipes in cookbooks for example i can include the mysql recipe from a php recipe.

Else and elsif statements can be used to handle situations where either the initial condition is not met or when there are other possible conditions that can be met.