# Ansible Role dependencies After Role **URL:** \ **Category:** Ansible Project\ **Created:** [February 3, 2016, 12:25pm UTC](https://forum.ansible.com/t/ansible-role-dependencies-after-role/20436 "2016-02-03T12:25:35Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![profhase85](https://avatars.discourse-cdn.com/v4/letter/p/2bfe46/32.png) [@profhase85](https://forum.ansible.com/u/profhase85)\ **Post date:** [February 3, 2016, 12:25pm UTC](https://forum.ansible.com/t/ansible-role-dependencies-after-role/20436/1 "2016-02-03T12:25:35Z")
Hello, how do I declare a role dependency which is executed after the role, e.g. : After every execution of role A, role B is executed According to this ons: [http://docs.ansible.com/ansible/playbooks\_roles.html#roles](http://docs.ansible.com/ansible/playbooks_roles.html#roles) the roles in ‘dependencies’ are executed before. The Background: My Role A starts an installer that always overrides the certificates. I also got a certificate deployment role Role B which should always be called after role A. ---
**Author:** ![profhase85](https://avatars.discourse-cdn.com/v4/letter/p/2bfe46/32.png) [@profhase85](https://forum.ansible.com/u/profhase85)\ **Post date:** [February 17, 2016, 10:14am UTC](https://forum.ansible.com/t/ansible-role-dependencies-after-role/20436/2 "2016-02-17T10:14:54Z")
As there seems to be no way to do this, would it be a feature request? ---
**Author:** ![alexey.vazhnov](https://avatars.discourse-cdn.com/v4/letter/a/b487fb/32.png) [@alexey.vazhnov](https://forum.ansible.com/u/alexey.vazhnov)\ **Post date:** [February 17, 2016, 12:38pm UTC](https://forum.ansible.com/t/ansible-role-dependencies-after-role/20436/3 "2016-02-17T12:38:45Z")
Ansible tasks and roles must be idempotent. If your role can override something, I think it’s the wrong way. ---
**Author:** ![alexey.vazhnov](https://avatars.discourse-cdn.com/v4/letter/a/b487fb/32.png) [@alexey.vazhnov](https://forum.ansible.com/u/alexey.vazhnov)\ **Post date:** [February 17, 2016, 12:40pm UTC](https://forum.ansible.com/t/ansible-role-dependencies-after-role/20436/4 "2016-02-17T12:40:34Z")
May be the better way for you is make one playbook for non-idempotent installer role and one for idempotent configuring. ---
**Author:** ![profhase85](https://avatars.discourse-cdn.com/v4/letter/p/2bfe46/32.png) [@profhase85](https://forum.ansible.com/u/profhase85)\ **Post date:** [February 18, 2016, 10:21am UTC](https://forum.ansible.com/t/ansible-role-dependencies-after-role/20436/5 "2016-02-18T10:21:56Z")
Actually everything is idempotent: The role I consider does upgrade java to a certain release. Of course the cacarts file gets overridden (since some certs might have been revoked etc.). After each call of this role I need my company certificates to be reincluded into the new cacerts file. Of course I could simply paste the tasks into this role. Unfortunately, there are some other roles (for e.g. patching some software) which also override the cacerts file. In this case I will have redundand code in multiple roles. ---
**Author:** ![Bourgeois\_Ghislain\_6](https://avatars.discourse-cdn.com/v4/letter/b/2acd7d/32.png) [@Bourgeois\_Ghislain\_6](https://forum.ansible.com/u/Bourgeois_Ghislain_6)\ **Post date:** [February 18, 2016, 2:01pm UTC](https://forum.ansible.com/t/ansible-role-dependencies-after-role/20436/6 "2016-02-18T14:01:37Z")
This looks to me like a use case for handlers, but instead of the handler being in a single role, it would apply after many roles. I am not sure this is feasible yet, but would be interested in finding out the solution. I would have to test, but I think something like this might work: Role our-cacerts - Containing handler to replace ca-certs if they were changed Role java - depending on our-cacerts and notifying the handler Role x - depending on our-cacerts and notifying the handler I will try to test this today, as we have a use case that would also be solved by this. Regards, Ghislain ---
**Author:** ![profhase85](https://avatars.discourse-cdn.com/v4/letter/p/2bfe46/32.png) [@profhase85](https://forum.ansible.com/u/profhase85)\ **Post date:** [February 20, 2016, 11:54am UTC](https://forum.ansible.com/t/ansible-role-dependencies-after-role/20436/7 "2016-02-20T11:54:06Z")
Merci Ghislain, I ve tried it and it works as you described it, here my files: ` ├── main.yml ├── role\_a │ ├── meta │ │ └── main.yml │ └── tasks │ └── main.yml └── role\_handler ├── handlers │ ├── do\_certs.yml │ └── main.yml └── tasks ├── do\_certs.yml └── main.yml ` ` # role\_a/tasks/main.yml - debug: msg=“Starting Role a” - command: /bin/false failed\_when: False changed\_when: True notify: - do certs ` ` # role\_handler/handlers/main.yml - name: do certs include: do\_certs.yml ` ` # role\_handler/ **tasks** /do\_certs.yml - name: copy certs debug: msg=“Copy Certs” - name: insert certs debug: msg=“{{ item }}” with\_items: - cert1 - cert2 ` ` # main.yml - hosts: localhost connection: local roles: - role\_a ` Yields