Reboot wait for port to come available

[Chris Bidwell - NOAA Federal]

Hi all,

So I know how to do this for the most part, but I've got two servers that when I have to reboot them, one needs to be done before the other and cannot before a specific port comes available.  That port is only accessible from that second server, not the ansible server itself.  Does that make sense?

Is there a way that I can create a playbook that will do what I'm describing?  

ie

Reboot server1 

Reboot server2 when tcp/3306 comes available on server1.  tcp/3306 is only open to server2.

[Kai Stian Olstad]

> Reboot server2 when tcp/3306 comes available on server1. *tcp/3306 is only
> open to server2.*

Use the reboot module on server1, it will wait for the server to be available again.
Then in the next task you can use the wait_for module on server2 to check the port 3306.

Pseudo code for 2 play in one playbook.

- hosts: server1
tasks:
- reboot:

- hosts: server2
tasks:
- wait_for:
host: server1
port: 3306
state: started

- reboot:

or in one play

- hosts: server1,server2
tasks:
- reboot:
when: inventory_hostname == "server1"

- wait_for:
host: server1
port: 3306
state: started
when: inventory_hostname == "server2"

- reboot:
when: inventory_hostname == "server2"



--
Kai Stian Olstad

[Chris Bidwell - NOAA Federal]

Doesn't this use the ansible server running the playbook to check if the port is open?  

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--

Chris Bidwell, CISSP
Space Weather Prediction Center
National Oceanic Atmospheric Administration
email: cchris....@noaa.gov

office: 303-497-3204
mobile: 720-496-3126

[Kai Stian Olstad]

On 23.10.2019 15:52, 'Chris Bidwell - NOAA Federal' via Ansible Project
wrote:

> Doesn't this use the ansible server running the playbook to check if
> the
> port is open?

No, since host is server2 the wait_for module will run on that host.
You would need connection: local, delegate_to: localhost or hosts:
localhost to make it run on Ansible server aka Ansible controller.

--
Kai Stian Olstad