How do I make it work ?

Do the following on a machine that is different from the machine you are going to upgrade and has your ssh key on it (your normal dev PC works)

1. apt-get install ansible or brew install ansible
2. Set your machine details in machine-description.yml
3. run bash deploy.sh or ansible-playbook -v -i machine-description.yml deploy.yml
4. If you did an initial deployment, the user you use to SSH into the box may have changed during the above step depending on what you have set for ansible_user and ssh_user, so you may need to adjust the ansible_user var.
5. ensure all is looking fine, and then finally run bash reboot.sh, wait up to 20 minutes for the machine to be accessible via ssh again

NOTE for OVH ADVANCE class devices: When doing an initial deployment with OLA (OVH Cloud Link Aggregation, see https://www.notion.so/litprotocol/Datil-test-Testnet-Node-Provisioning-Guide-6c78bd5e7ebd4b0f8cec1ad78e130be2?pvs=4#22de9bba0e7e49108509a5d60b8f6aaa), what you entered for host_ip becomes the IP you need to use to access your machine via SSH after you reboot. After executing reboot.sh your machine may not be reachable (and the reboot.sh will time out waiting) until you change ansible_host to be equal to the host_ip (you can also just SSH into host_ip manually after reboot as that is the final step anyway)

If you encounter errors during this process:

1. save a copy of the deploy.log file and send it to someone from Lit Protocol for debugging
2. You may attempt to rerun the deploy.sh script, it will simply skip the already completed steps