# check connectivity (telnet \ \ **URL:** \ **Category:** Ansible Project\ **Created:** [June 4, 2023, 10:06am UTC](https://forum.ansible.com/t/check-connectivity-telnet-ip-address-port/38054 "2023-06-04T10:06:39Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![dulhaver](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/dulhaver/32/1061_2.png) [@dulhaver](https://forum.ansible.com/u/dulhaver)\ **Post date:** [June 4, 2023, 10:06am UTC](https://forum.ansible.com/t/check-connectivity-telnet-ip-address-port/38054/1 "2023-06-04T10:06:39Z")
hi, I am running a playbook og a couple of postgres-remotes who play different roles in a complex server landscape. Now I want to check to check whether i.e. postgres1 has a connection via port 5432 to a specific IP address. The true/false like result of such a check should be saved into a variable. Manually I could i.e. do this with something like ‘telnet \ 5432’ what would be the right approach (aka module) for such in an Ansible TASK? ---
**Author:** ![dnmvisser](https://avatars.discourse-cdn.com/v4/letter/d/8e8cbc/32.png) [@dnmvisser](https://forum.ansible.com/u/dnmvisser)\ **Post date:** [June 4, 2023, 11:21am UTC](https://forum.ansible.com/t/check-connectivity-telnet-ip-address-port/38054/2 "2023-06-04T11:21:54Z")
Do you want to check if the server has an established connection to an IP address? Or if it is listening on a specific port? There are perhaps better ways of finding out if a server is running at some socket ---
**Author:** ![vbotka](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/vbotka/32/359_2.png) [@vbotka](https://forum.ansible.com/u/vbotka)\ **Post date:** [June 4, 2023, 11:38am UTC](https://forum.ansible.com/t/check-connectivity-telnet-ip-address-port/38054/3 "2023-06-04T11:38:22Z")
Use the module \*wait\_for\*. See [https://docs.ansible.com/ansible/latest/collections/ansible/builtin/wait\_for\_module.html](https://docs.ansible.com/ansible/latest/collections/ansible/builtin/wait_for_module.html) If you run the play on \*postgres1\* the task is simple   - hosts: postgres1     tasks:       - wait\_for:           host: \           port: 5432 If you run the play on multiple hosts you might want to run once and delegate the task   - hosts: all     tasks:       - wait\_for:           host: \           port: 5432         delegate\_to: postgres1         run\_once: true See: pg\_isready [https://www.postgresql.org/docs/current/app-pg-isready.html](https://www.postgresql.org/docs/current/app-pg-isready.html) ---
**Author:** ![dulhaver](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/dulhaver/32/1061_2.png) [@dulhaver](https://forum.ansible.com/u/dulhaver)\ **Post date:** [June 5, 2023, 9:53am UTC](https://forum.ansible.com/t/check-connectivity-telnet-ip-address-port/38054/4 "2023-06-05T09:53:44Z")
probably I did not make myself clear enough >   - hosts: postgres1 >     tasks: >       - wait\_for: >           host: \ >           port: 5432 I guess this would check whether 'postgres1' can connect to \:5432. What I wanted to check (without waiting for a connection to be ready actually, just gathering information) was the other way around ... ... whether 'postgres1' would be ready to accept connections from \:5432 ---
**Author:** ![vbotka](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/vbotka/32/359_2.png) [@vbotka](https://forum.ansible.com/u/vbotka)\ **Post date:** [June 5, 2023, 11:07am UTC](https://forum.ansible.com/t/check-connectivity-telnet-ip-address-port/38054/5 "2023-06-05T11:07:52Z")
> probably I did not make myself clear enough No. Your statement can't be clearer: "to check whether postgres1 has a connection via port 5432 to a specific IP address" [https://groups.google.com/g/ansible-project/c/dkR80nKr25Q/m/rVRrMlTbBAAJ](https://groups.google.com/g/ansible-project/c/dkR80nKr25Q/m/rVRrMlTbBAAJ) ---
**Author:** ![dulhaver](https://sea1.discourse-cdn.com/ansible/user_avatar/forum.ansible.com/dulhaver/32/1061_2.png) [@dulhaver](https://forum.ansible.com/u/dulhaver)\ **Post date:** [June 5, 2023, 11:37am UTC](https://forum.ansible.com/t/check-connectivity-telnet-ip-address-port/38054/6 "2023-06-05T11:37:09Z")
right. It was clear, but not correct I am afraid. Apologies. I meant it the other way around. Checking whether postgres1 can be connected to FROM another machine. Still the hint to the wait module was real value for me, thanks for that.