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
On your local workstation, in the
recipessubdirectory in the
opsworks_cookbook_demodirectory, create a file named
run_script.rbwith 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
At the terminal or command prompt, use the tar command create a new version of the
opsworks_cookbook_demo.tar.gzfile, which contains the
opsworks_cookbook_demodirectory and its updated contents.
Upload the updated
opsworks_cookbook_demo.tar.gzfile to your S3 bucket.
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
To test the recipe
Log in to the instance, if you have not done so already.
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:
In the next step, you will update the cookbook to manage a service on the instance.