Complete Ansible playbook for exit scanner (check-01) deployment

This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records done
2. Add cron job for check service to reload done
3. Integrate DNS zone script into Ansible done
4. rm everything, re-deploy, check it still works done

Trac:
Parent Ticket: #33507 (moved)

added component::metrics/exit scanner owner::irl parent::33507 priority::very high resolution::fixed severity::normal status::closed type::task labels

Trac:
Parent: N/A to #33507 (moved)

DNS zone handling is now part of exitscan.py, which is what is running as a systemd service for the exit scanner.

Trac:
Description: This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records
2. Add cron job for check service to reload
3. Integrate DNS zone script into Ansible
4. rm everything, re-deploy, check it still works
5. Send service announcement, can consider the new DNS service functional at this point (best effort)
6. Write up ops doc for deployment and disaster recovery

to

This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records
2. Add cron job for check service to reload
3. Integrate DNS zone script into Ansible done
4. rm everything, re-deploy, check it still works
5. Send service announcement, can consider the new DNS service functional at this point (best effort)
6. Write up ops doc for deployment and disaster recovery

Tor client for check updater added in de49f2d.

Trac:
Description: This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records
2. Add cron job for check service to reload
3. Integrate DNS zone script into Ansible done
4. rm everything, re-deploy, check it still works
5. Send service announcement, can consider the new DNS service functional at this point (best effort)
6. Write up ops doc for deployment and disaster recovery

to

This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records
2. Add cron job for check service to reload
3. Integrate DNS zone script into Ansible done
4. rm everything, re-deploy, check it still works
5. Send service announcement, can consider the new DNS service functional at this point (best effort)
6. Write up ops doc for deployment and disaster recovery
   Status: new to accepted
   Owner: metrics-team to irl

Trac:
Description: This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records
2. Add cron job for check service to reload
3. Integrate DNS zone script into Ansible done
4. rm everything, re-deploy, check it still works
5. Send service announcement, can consider the new DNS service functional at this point (best effort)
6. Write up ops doc for deployment and disaster recovery

to

This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records done
2. Add cron job for check service to reload
3. Integrate DNS zone script into Ansible done
4. rm everything, re-deploy, check it still works
5. Send service announcement, can consider the new DNS service functional at this point (best effort)
6. Write up ops doc for deployment and disaster recovery

not sure i need to follow all the changes here, but thanks for your work! :)

Trac:
Cc: anarcat, phw to phw

Check data updater added in ff0412f.

Trac:
Description: This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records done
2. Add cron job for check service to reload
3. Integrate DNS zone script into Ansible done
4. rm everything, re-deploy, check it still works
5. Send service announcement, can consider the new DNS service functional at this point (best effort)
6. Write up ops doc for deployment and disaster recovery

to

This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records done
2. Add cron job for check service to reload done
3. Integrate DNS zone script into Ansible done
4. rm everything, re-deploy, check it still works
5. Send service announcement, can consider the new DNS service functional at this point (best effort)
6. Write up ops doc for deployment and disaster recovery

After initial deployment, it seems necessary to run make start in check directory, ctrl+c when you see "Listening on port: 8000" then restart the check service.

Everything will redeploy OK, except for the "make start" step. I think this is just something we will live with because this has already dragged on too long. It's sufficient that we can quickly recover the service if needed.

Step 5 will happen in #33508 (moved) and step 6 in #33510 (moved), so removing from the scope of this ticket.

Trac:
Description: This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records done
2. Add cron job for check service to reload done
3. Integrate DNS zone script into Ansible done
4. rm everything, re-deploy, check it still works
5. Send service announcement, can consider the new DNS service functional at this point (best effort)
6. Write up ops doc for deployment and disaster recovery

to

This ticket contains the final tasks that need to be integrated into the Ansible playbook for the managed deployment of check-01 (aka the exit scanner service):

1. Run tor service for check to have up to date records done
2. Add cron job for check service to reload done
3. Integrate DNS zone script into Ansible done
4. rm everything, re-deploy, check it still works done
   Resolution: N/A to fixed
   Status: accepted to closed

closed

mentioned in issue #33510 (moved)

mentioned in issue #33507 (moved)