multinode_test.cgr

--- Multi-node orchestration test ---

set app_version = "3.0.1"
set db_host = "10.0.2.3"
set web_host = "10.0.1.5"

# ── Database target ──────────────────────────────────────────

target "db" ssh deploy@${db_host}:

  [install postgres]:
    skip if $ dpkg -l | grep -q postgresql
    run $ apt-get install -y postgresql

  [setup schema]:
    first [install postgres]
    skip if $ psql -U app -d myapp -c "SELECT 1 FROM schema_versions LIMIT 1" 2>/dev/null
    run $ psql -U postgres -c "CREATE DATABASE myapp" && psql -U postgres -d myapp -f /opt/schema.sql

  [seed data]:
    first [setup schema]
    skip if $ psql -U app -d myapp -c "SELECT count(*) FROM config" | grep -q "[1-9]"
    run $ psql -U app -d myapp -f /opt/seed.sql

# ── Cache target ─────────────────────────────────────────────

target "cache" local:

  [start redis]:
    skip if $ redis-cli ping | grep -q PONG
    run $ systemctl start redis

# ── Web target (depends on db and cache) ─────────────────────

target "web" ssh deploy@${web_host}, after "db", "cache":

  [deploy app]:
    run $ tar xzf /tmp/app-${app_version}.tar.gz -C /opt/app

  [configure app]:
    first [deploy app]
    run $ printf "DB_HOST=${db_host}\nCACHE_HOST=localhost\nAPP_VERSION=${app_version}\n" > /opt/app/config.env

  [start app]:
    first [configure app]
    skip if $ systemctl is-active --quiet myapp
    run $ systemctl start myapp

  verify "app is healthy":
    first [start app]
    run $ curl -sf http://localhost:8080/health
    retry 3x wait 5s

# ── Monitor target (cross-node step refs, no node-level after) ──

target "monitor" local:

  [register db check]:
    first [db/setup schema]
    run $ echo "monitor db at ${db_host}" >> /etc/monitors.conf

  [register web check]:
    first [web/start app]
    run $ echo "monitor web at ${web_host}" >> /etc/monitors.conf

  [reload monitors]:
    first [register db check], [register web check]
    run $ systemctl reload monitoring