YDBDOCS-668: add a playbook to show node logs

[blinkov]

No description provided.

[artgromov]

You should put this playbook here https://github.com/ydb-platform/ydb-ansible/tree/main/playbooks
to avoid duplicate code and to be able to use it with any project.

[blinkov]

@artgromov then why do we have setup_playbook.yaml copy-pasted to all examples? How people are supposed to discover the playbooks in that folder?

[artgromov]

@artgromov then why do we have setup_playbook.yaml copy-pasted to all examples?

I dont know, they seem excessive to me.

How people are supposed to discover the playbooks in that folder?

Only by reading collection documentation, which is absent for now.

That is the usual way for ansible collections. By making people copy-pasting example playbooks we are loosing maintainability for user-deployed systems. If we want to guarantee service continuity while using our playbooks, we should distribute them with ydb_platform collection and should heavily use various asserts.

[blinkov]

@artgromov ok, so it sounds like a plan:

1. Here's a copy of this PR in that other repo: YDBDOCS-668: add a playbook to show node logs ydb-ansible#19
2. We'll need to update the documentation so all users end up with Ansible 2.11+ (currently, I got 2.10 by following them on Ubuntu 22.04, and the steps below don't work)
3. Recommend people to use playbooks from our collection via https://docs.ansible.com/ansible/latest/collections_guide/collections_using_playbooks.html#using-a-playbook-from-a-collection (and move setup_playbook.yaml there as well)
4. Document other available playbooks.

[blinkov]

Copy of setup_playbook.yaml ydb-platform/ydb-ansible#20

[blinkov]

Improvement of instructions to lower the chance of people accidentally ending up with an old Ansible version like I did: https://github.com/ydb-platform/ydb/pull/4394/files

[artgromov]

Discarding this PR in favor of ydb-platform/ydb-ansible#19.

Playbook from the collection could be invoked using command:

ansible-playbook -i <your-inventory> ydb_platform.ydb.logs