Step 9: Update the Cookbook to Run a Command
Update your cookbook by adding a recipe that runs a command that creates an SSH key on the instance.
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_command.rbwith the following code. For more information, go to execute.
execute "Create an SSH key" do command "ssh-keygen -f /tmp/my-key -N fLyC3jbY" 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 commands, one at a time, to confirm that the SSH key was created:
sudo cat /tmp/my-key sudo cat /tmp/my-key.pub
The SSH private and public key's contents are displayed:
-----BEGIN RSA PRIVATE KEY----- Proc-Type: 4,ENCRYPTED DEK-Info: AES-128-CBC,DEF7A09C...541583FA A5p9dCuo...wp0YYH1c -----END RSA PRIVATE KEY----- ssh-rsa AAAAB3N...KaNogZkT root@cookbooks-demo1
In the next step, you will update the cookbook to run a script on the instance.