You can use the Ansible wait_for module which checks a specific TCP port is open.
Since in this case, all ports should be open already, we can use a minimal no. of retries, just enough to cover network issues:
- name: Check all port numbers are accessible from the current host
wait_for:
host: mywebserver.com
port: "{{ item }}"
state: started # Port should be open
delay: 0 # No wait before first check (sec)
timeout: 3 # Stop checking after timeout (sec)
ignore_errors: yes
with_items:
- 443
- 80
- 80443
By default, Ansible will check once every second (configurable in Ansible 2.3 using the sleep
attribute), so this will check 3 times per port.
Run this in a playbook against your inventory of 400+ hosts - Ansible will check in parallel that all hosts can reach mywebserver.com
on those ports.
- the parallelism is subject to the forks setting in your
ansible.cfg
.
We use ignore_errors: yes
here so that any errors are marked in red but do not stop execution.
Open ports are reported as ok
items in output and closed ports are reported as failed
(you must use -vv
flag on ansible-playbook
to see this output).
Fine-tuning output
If you want more specific output for the success and failure cases, the code must be more complex, adding a second task:
wait_for
task must register
a variable
- the second task produces output using
debug
based on success/failure condition (e.g. using Jinja2 conditional expression)
- then you need to put both these tasks in an include file (without any
with_items
loop), and write a main playbook task that uses an include
... with_items
to call the include file once per port.