personal_infra/ansible/services/mempool/deploy_mempool_playbook.yml
counterweight 3711421af5
ansible: move the cross-host ports to host_vars, delete services_config.yml
The four ports were the only entries in services_config.yml with a real
justification: each is read twice, by the role that deploys the service on its
own box AND by a socket-proxy or Caddy play that runs on the EDGE host and
publishes it. A role default is invisible to that second play.

But the shape was wrong in two ways. The file had to be named in vars_files: by
30 plays - opt-in configuration that someone will eventually forget - and five
role defaults silently interpolated service_settings.*, so bitcoin_knots,
fulcrum, datum_gateway and mempool were not self-contained: using any of them
without that one vars_file entry broke it.

Each port now lives in host_vars/<owning box>/main.yml:

  host_vars/knots_box_local/main.yml    bitcoin_p2p_port, datum_gateway_api_port,
                                        datum_gateway_stratum_port
  host_vars/fulcrum_box_local/main.yml  fulcrum_ssl_port
  host_vars/mempool_box_local/main.yml  mempool_frontend_port

host_vars auto-loads and outranks role defaults, so the owning role picks the
value up with no vars_files at all, and the edge play reads the same single
definition as hostvars['<host>'].<name>. The role defaults keep the protocol
standard (8333, 50002, ...) so each role still works standalone, with the live
deployment's value in host_vars winning.

Also fixed a fourth copy of an inventory identity: the mempool Caddy play had
"mempool-box:{{ ... }}" hardcoded in the upstream. It now derives the host from
hostvars['mempool_box_local'].ansible_host, so inventory is the only place any
box's name is written down.

services_config.yml is deleted, with 25 more vars_files entries across 19
playbooks. Between this and the previous commit, 87 vars_files entries are gone
and every variable in the repo now comes from group_vars/all, host_vars,
inventory, a role default, or that service's own *_vars.yml.

Verification: an edge-host probe resolves all eight ports and hostnames to
byte-identical values to the ones services_config.yml used to supply. Each
owning host resolves its own port through host_vars. All 37 playbooks'
--list-tasks output is unchanged. The four edge plays that consume these values
all check-diff changed=0 - the socket-proxy and Caddy units on vipy are
byte-identical, which is the direct proof the rewiring landed on the same
values. fulcrum and datum-gateway check-diff exactly as before (ok=28/changed=1
and ok=15/changed=1, both the known timer re-arm).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-13 21:02:57 +02:00

30 lines
1.3 KiB
YAML

---
- name: Deploy Mempool Block Explorer with Docker
hosts: mempool
become: yes
vars:
# Preserves the three push URLs these checks have been reporting to all
# along, so the move to a role changes no behaviour. The role knows nothing
# about Uptime Kuma — these are just "URLs that accept a ping", and whatever
# replaces it sets the same values.
mempool_healthchecks:
- {name: mariadb, label: MariaDB, push_url: "{{ healthcheck_push_urls.mempool.mariadb | default('') }}"}
- {name: backend, label: Backend, push_url: "{{ healthcheck_push_urls.mempool.backend | default('') }}"}
- {name: frontend, label: Frontend, push_url: "{{ healthcheck_push_urls.mempool.frontend | default('') }}"}
roles:
- mempool
- name: Configure Caddy reverse proxy for Mempool on the edge host
hosts: edge
become: yes
vars:
mempool_domain: "{{ subdomains.mempool }}.{{ root_domain }}"
tasks:
- name: Publish Mempool through Caddy (via Tailscale)
ansible.builtin.include_role:
name: caddy_site
vars:
caddy_site_name: mempool
caddy_site_domain: "{{ mempool_domain }}"
caddy_site_upstream: "{{ hostvars['mempool_box_local'].ansible_host }}:{{ hostvars['mempool_box_local'].mempool_frontend_port }}"
caddy_site_resolvers: "100.100.100.100"