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esh-pfi-infrastructure/stacks/beszel/README.md
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vh e376d0aec9 Initial commit: PFI fleet inventory, stacks, tooling, and backup pipeline
Captures the full workspace state built up to this point:

  - CLAUDE.md + README.md describing conventions and the four-host fleet
    (ana-ml2, ana-docker, nh3-docker, esh-docker-vm).
  - Per-host notes under servers/<host>/ with ssh-target fallback files
    and latest system-details snapshots (two in-compose credential leaks
    scrubbed; the upstream compose files still need to move those to .env).
  - scripts/: server_inspect.sh (read-only remote diagnostic),
    refresh-server-info.sh (dir-driven discovery + snapshot capture with
    validation warnings), add-host.sh, sync-stacks.sh (pull
    compose/conf trees), deploy-stack.sh (push with per-file diff + prompt).
  - stacks/: canonical compose for backrest, beszel, dozzle, llama-swap,
    rest-server-ana, rest-server-nh3, vllm-qwen3, plus the retired
    infinity reference. All use the .env-driven + traefik-net + homepage
    label pattern.
  - configs/restic/ana-docker/: first resticprofile config + pre-backup
    hook (Synapse pg_dump, Seafile mysqldump, Vaultwarden SQLite); templates
    for the other three hosts to come.
  - docs/pfi/: general infrastructure reference carried over.
  - .gitignore excludes .env, stacks-mirror/, and assorted secret/state
    filenames to prevent re-leaks on later commits.
2026-04-20 14:29:48 -07:00

3.2 KiB

beszel

Lightweight monitoring — CPU, memory, disk, network, and per-container stats for every Docker host, with alerts over email/webhook. Pairs with Dozzle (logs) on the same server.

Deploys to:

  • ana-docker (hub + local agent) — UI at http://10.250.50.70:8090
  • ana-ml2 (agent only) — listens on 10.250.50.54:45876
  • nh3-docker (agent only, cross-site) — listens on 10.100.50.40:45876

Same compose.yaml on each host. Per-host .env sets COMPOSE_PROFILES to bring up the right combination. Each agent host is added individually in the hub UI.

How hub ↔ agent auth works

Beszel uses SSH-key-based auth: the hub generates its own keypair on first boot, and each agent must be seeded with the hub's public key via the KEY env var. Agents listen on a port (default 45876); the hub pulls metrics by connecting to them with that key.

Operator flow on first deploy:

  1. Bring up the hub on ana-docker with BESZEL_HUB_KEY= blank and the agent profile disabled.
  2. Open the UI, create the admin account, click Add System — Beszel shows the public key.
  3. Copy the key into BESZEL_HUB_KEY in the .env on both hosts.
  4. Re-deploy the hub with COMPOSE_PROFILES=hub,agent to add the local agent; deploy the agent on ana-ml2.
  5. Back in the UI, Add System with host=127.0.0.1 port=45876 (local) and host=10.250.50.54 port=45876 (ana-ml2).

Deploy — hub + local agent (ana-docker)

ssh ana-docker
sudo mkdir -p /opt/docker/compose/beszel
sudo chown $USER /opt/docker/compose/beszel
cd /opt/docker/compose/beszel

# scp compose.yaml + .env.example, then:
cp .env.example .env
# First pass — hub only, no key yet:
#   COMPOSE_PROFILES=hub
#   BESZEL_PORT=8090
docker compose up -d

# Open http://10.250.50.70:8090 → create admin → click "Add System" →
# copy the displayed public key into BESZEL_HUB_KEY.

# Second pass — add the local agent:
#   COMPOSE_PROFILES=hub,agent
#   BESZEL_EXTRA_FS=/mnt/backup,/mnt/compose
docker compose up -d

Deploy — agent (ana-ml2)

ssh ana-ml2
sudo mkdir -p /opt/docker/compose/beszel
sudo chown $USER /opt/docker/compose/beszel
cd /opt/docker/compose/beszel

# scp the same compose.yaml + .env.example, then:
cp .env.example .env
# Edit to:
#   COMPOSE_PROFILES=agent
#   BESZEL_HUB_KEY=<same key as the hub>
#   BESZEL_EXTRA_FS=/tank

docker compose up -d
docker compose logs -f

Then in the hub UI, Add System with host=10.250.50.54, port=45876.

Verify

# Hub health
curl -s http://10.250.50.70:8090/api/health

# Agent reachable
ssh ana-docker 'nc -zv 10.250.50.54 45876'

# Local agent reachable from hub container
docker exec beszel nc -zv host.docker.internal 45876

Sizing / impact

The agent is ~10 MB RAM and negligible CPU — runs fine alongside anything on ana-ml2 including GPU workloads. Host-mode networking means it has no port conflicts with other stacks as long as BESZEL_AGENT_PORT stays unique.

Alerts

Configured inside the hub UI (Settings → Notifications). Supports email (SMTP), Gotify, ntfy, Discord, Slack, and generic webhooks. Alert rules attach to per-system or global thresholds (CPU, memory, disk, container down, etc.).