Ansible wait_for http

wait_for_http.yml

- name: wait_for http 
  command: "curl --silent {{ url }}"
  register: result
  until: result.stdout.find("200 OK") != -1
  retries: 60
  delay: 1
  changed_when: false

As far is this gist is on top of Google search now :) the best solution is to use uri ansible module like below.

• name: "wait for ABC to come up"
  uri:
  url: "http://127.0.0.1:8080/ABC"
  status_code: 200
  register: result
  until: result.status == 200
  retries: 60
  delay: 1

@realjiktu nice workaround. But... version with curl is more reliable. uri depends on httplib2 python library which must be installed on remote host.

failed: [boomslang] => {"failed": true}
msg: httplib2 is not installed

FATAL: all hosts have already failed -- aborting

The above comment, formatted a little more nicely:

- name: "wait for ABC to come up"
  uri:
    url: "http://127.0.0.1:8080/ABC"
    status_code: 200
  register: result
  until: result.status == 200
  retries: 60
  delay: 1

This will try the URL every second for up to 60 seconds before failing.

- name: "wait for {{url}} to come up"
  uri:
    url: "{{url}}"
    method: GET
    status: 200
  register: _result
  until: _result.status == 200
  retries: 30 # retry X times  
  delay: 60 # pause for X sec b/w each call

max calls = retries + 1

TASK [URL CALL : wait for https://xxx to come up] ***
FAILED - RETRYING: wait for https://xxx to come up (30 retries left).
FAILED - RETRYING: wait for https://xxx to come up (29 retries left).
FAILED - RETRYING: wait for https://xxx to come up (28 retries left).

@realjiktu nice workaround. But... version with curl is more reliable. uri depends on httplib2 python library which must be installed on remote host.

https://docs.ansible.com/ansible/latest/modules/uri_module.html#notes

The dependency on httplib2 was removed in Ansible 2.1

The uri module doesn't work for me. I'm deploying a mucroservice on our Kubernetes cluster and have to make additional calls, after the service is reachable. The issue with the uri module is, the dns entry is created when the microservice is deployed. It take up to 2-3 minutes until it is created. The uri module failes, if the dns entry hasn't been created when it's executed. So I'll try the curl/command module thing mentioned above. Does anybody has another idea for this?

Here is a variation of the above that works. Since this constantly returns a 200 it checks content instead. Similar to the above examples you can add status_code: [200, 403] if the health check returns a 200 or a 403 as passing and check that in the until portion.

- name: wait for consul to come up
  uri:
    url: "http://127.0.0.1:8500/v1/status/leader"
    method: GET
    headers:
      Authorization: Bearer {{ consul_acl_master_token }}
    return_content: yes
  register: _result
  until: _result.content != '\"\"'
  retries: 30 # retry X times
  delay: 3 # pause for X sec b/w each call

The dependency on httplib2 was removed in Ansible 2.1

And it can be run as a local action on the ansible-host, instead of the target host.
(Unless your network setup forbids ansible to reach the target url)

- name: Wait for frontend at {{ somewhere }} to come up
  local_action:
    module: uri
    url: "{{ somewhere }}"
    status_code: 200
  register: result
[...]