0. this guide assumes that you're running this playbook from the same machine you used to make initial deployment of your node. So that you already have `python` and `ansible` installed, and you have the correct ssh keypair to root-access the node.
1. clone this repository if you haven't done so before
**NOTE**: by default playbook assumes that you are updating your SOKOL validator node. If you are updating CORE validator node, in `group_vars/all` change `SCRIPTS_VALIDATOR_BRANCH` to `"core"` as shown below: