# Add host using add\_host not taking effect **URL:** \ **Category:** Ansible Project\ **Created:** [January 22, 2020, 4:02pm UTC](https://forum.ansible.com/t/add-host-using-add-host-not-taking-effect/32026 "2020-01-22T16:02:54Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Punit\_Jain](https://avatars.discourse-cdn.com/v4/letter/p/e56c9b/32.png) [@Punit\_Jain](https://forum.ansible.com/u/Punit_Jain)\ **Post date:** [January 22, 2020, 4:02pm UTC](https://forum.ansible.com/t/add-host-using-add-host-not-taking-effect/32026/1 "2020-01-22T16:02:54Z")
Hi, I am doing a very straight forward testing of adding a new host dynamically. ---
**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:** [January 22, 2020, 4:15pm UTC](https://forum.ansible.com/t/add-host-using-add-host-not-taking-effect/32026/2 "2020-01-22T16:15:50Z")
Split the playbook to 2 plays. Add the host in the first play, and use it the second. - hosts: all    connection: local    gather\_facts: no    tasks:      - name: add host        add\_host:          name: 'testserver'          groups: all        run\_once: true - hosts: all    connection: local    gather\_facts: no    tasks:      - name: print        debug:          msg: "hello" HTH,   -vlado ---
**Author:** ![Punit\_Jain](https://avatars.discourse-cdn.com/v4/letter/p/e56c9b/32.png) [@Punit\_Jain](https://forum.ansible.com/u/Punit_Jain)\ **Post date:** [January 22, 2020, 5:46pm UTC](https://forum.ansible.com/t/add-host-using-add-host-not-taking-effect/32026/3 "2020-01-22T17:46:05Z")
In below usecase it is not working: run.yml ---
**Author:** ![Kai\_Stian\_Olstad](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@Kai\_Stian\_Olstad](https://forum.ansible.com/u/Kai_Stian_Olstad)\ **Post date:** [January 22, 2020, 6:15pm UTC](https://forum.ansible.com/t/add-host-using-add-host-not-taking-effect/32026/4 "2020-01-22T18:15:27Z")
> run.yml > ---------- > --- > - hosts: all >   connection: local >   gather\_facts: no > >   tasks: >     - name: include role task >       include\_role: >         name: role1 >         tasks\_from: hello > > - hosts: all >   connection: local >   gather\_facts: no > >   tasks: >     - name: include role task >       include\_role: >         name: role1 >         tasks\_from: bye > > then inside role tasks: > ------------------------ > hello.yml > > - name: add host >   add\_host: >     name: 'test' >     groups: all There is no point in adding a host to all, the all group are a special group that all hosts is a member of. > - name: refresh >   meta: refresh\_inventory Here you say, purge my inventory and read it in again. Then all your dynamic hosts get purged and your inventory is read again which don't have the dynamic ones. So just remove this task and it should work. ---
**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:** [January 22, 2020, 6:55pm UTC](https://forum.ansible.com/t/add-host-using-add-host-not-taking-effect/32026/5 "2020-01-22T18:55:57Z")
The point is to add a host that hasn't been declared in any inventory yet.   -vlado ---
**Author:** ![Kai\_Stian\_Olstad](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@Kai\_Stian\_Olstad](https://forum.ansible.com/u/Kai_Stian_Olstad)\ **Post date:** [January 22, 2020, 8:09pm UTC](https://forum.ansible.com/t/add-host-using-add-host-not-taking-effect/32026/6 "2020-01-22T20:09:06Z")
I understand that, it wasn't that I commented on, I can rephrase Using "groups: all" in add\_host is pointless since all hosts is automatically added to the group all anyway.