Answers "what's the best way to see CPU/RAM/disk usage on this box"
(IONOS's own dashboard doesn't expose it) and "does Gatus cover this" —
it doesn't, Gatus is a black-box HTTP check (is the site responding
from the outside), Beszel is white-box host/process monitoring (is the
box under memory/disk pressure, is a container actually running vs.
crash-looping). Complements Gatus rather than replacing it.
Mirrors the hub+agent same-system layout from beszel's own
supplemental/docker/same-system/docker-compose.yml (fetched from the
actual upstream repo, not reconstructed from memory) — hub is the web
dashboard, agent reads /var/run/docker.sock (read-only) to report every
currently-running container automatically, no per-service config
needed as containers get added or removed.
Genuinely a two-phase install: the hub's SSH keypair and universal
token only exist after logging into its web UI once, so this starts
the hub, walks through where to find both values, and finishes wiring
the agent once provided — skipping is fine, a rerun in "update" mode
detects the agent was never connected and offers to finish it.
Verified the generated docker-compose.yml/.env by running the actual
file-writing code path with docker/configure_caddy_for_service mocked
out — confirmed TOKEN/KEY are correctly left as literal
${AGENT_TOKEN:-}/${AGENT_KEY:-} for Docker Compose's own substitution
at "up" time, not prematurely expanded by the heredoc itself.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H4k6J1qXXyYxhGEgnJaMvn
Claude
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