Testing server response with timeout using ansible

Question

I have 2 servers hosting a website. I want to do a rolling upgrade with Ansible like the following:

I want roll out updates to my two servers with ansible. I want them to upgrade one at a time-> then take the building node off the load balancer-> run the tasks. Over here I want to wait it for server start up and send a request to a test URL 5 seconds periodically till there's a valid response. Here it fails the tasks because a timeout occurs after 3 minutes. I want these tasks to complete successfully and then build the next node.

I can do the timeout part with a custom script but isn't there some ansible functionality that does it automatically.

Answer 1

Got it working using wait_for and until statement together:

 - name: "wait for port to be available"
    wait_for:
      host: "127.0.0.1"
      port: "{{port}}"
      timeout: 30
  - name: "wait for web app to start up"
    shell: curl -XGET --head --silent http://127.0.0.1:{{port}}/test
    register: result
    until: result.stdout.find("200 OK") != -1
    retries: 60
    delay: 3