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AWS OpsWorks
User Guide (API Version 2013-02-18)

Step 10: Update the Cookbook to Run a Script

Update your cookbook by adding a recipe that runs a script on the instance. This recipe creates a directory and then creates a file in that directory. Writing a recipe to run a script that contains multiple commands is easier than running those commands one at a time.

To update the cookbook on the instance and run the new recipe

  1. On your local workstation, in the recipes subdirectory in the opsworks_cookbook_demo directory, create a file named run_script.rb with the following code. For more information, go to script.

    script "Run a script" do
      interpreter "bash"
      code <<-EOH
        mkdir -m 777 /tmp/run-script-demo
        touch /tmp/run-script-demo/helloworld.txt
        echo "Hello, World!" > /tmp/run-script-demo/helloworld.txt
      EOH
    end
  2. At the terminal or command prompt, use the tar command create a new version of the opsworks_cookbook_demo.tar.gz file, which contains the opsworks_cookbook_demo directory and its updated contents.

  3. Upload the updated opsworks_cookbook_demo.tar.gz file to your S3 bucket.

  4. Follow the procedures in Step 5: Update the Cookbook on the Instance and Run the Recipe to update the cookbook on the instance and to run the recipe. In the "To run the recipe" procedure, for Recipes to execute, type opsworks_cookbook_demo::run_script.

To test the recipe

  1. Log in to the instance, if you have not done so already.

  2. From the command prompt, run the following command to confirm that the new file was added:

    sudo cat /tmp/run-script-demo/helloworld.txt

    The file's contents are displayed:

    Hello, World!

In the next step, you will update the cookbook to manage a service on the instance.