vh
6d901c0e8d
nh3-ml1's first Temperature alert (2026-09-25 2105, 88.8 C) was nh3-pve's CPU
package during the nightly vzdump; the GPU sat at 47 C. hwmon is not namespaced,
so an LXC's agent reports its host's coretemp sensors under the LXC's name.
- hosts/{nh3,esh}-ml1.yaml: SENSORS=-coretemp_*,acpitz (blacklist); GPU and
NVMe temperatures verified still reported.
- Hub: Temperature >95 C / 5 m on nh3-pve and esh-pve for the CPUs (i9-13900H
TjMax 100 C; nh3-pve 2-hour averages reach 88 C on busy days).
- nh3-pve README: runs warmer than esh-pve; workload confounds it, check
airflow on the next visit.
Beszel fleet monitoring
Priority 2 completed 2026-09-11: pfi-postgres, esh-vm-db, pbs-ana and pbs-nh3
added with 16 alerts. Live samples verified, including both PBS datastores.
Fleet 17/18 up (known fv-ml1 outage). See configs/beszel-agent/PRIORITY2.md.
Hub: http://10.250.50.70:8090 (ana-docker), version 0.18.7 at the 2026-09-10 wiring. The hub also retains corviduo-dev's existing registration.
2026-09-11: five native agents added (ana-nas plus pfi-pve, nh3-pve,
esh-pve and esh-pve-nas); 13 systems total and 20 additional alert rules.
See configs/beszel-agent/README.md. Subsequently nh3-nas was installed via
DSM Docker and registered with four alerts (14 registrations total). Recovery
verification at 2026-09-12 01:51Z: all six priority-1 hosts up, Synology live
filesystem samples verified; fleet 13/14 up with known fv-ml1 outage.
| Host | Compose directory under /opt/docker/compose/ |
Additional filesystems |
|---|---|---|
| ana-docker | beszel | /mnt/backup |
| fv-ml1 | beszel-agent-ana | /tank, /home |
| nh3-docker | beszel-agent-nh3 | none |
| esh-docker-vm (hub name esh-vm-docker) | beszel-agent-esh | /mnt/backup, /mnt/books |
| irv-ml1 | beszel-agent-irv | /worktank, /storetank, /mnt/smithy |
| vm-esh-nas | beszel-agent-esh-nas | /mnt/books, /mnt/share, /mnt/music, /mnt/media |
| nh3-dev | beszel | none since 2026-09-25 (was /mnt/backup, /mnt/smithy — see below) |
| esh-ml1 (added 2026-09-25) | beszel | none — NVIDIA image (hosts/esh-ml1.yaml) for the RTX 2000E Ada |
| nh3-ml1 (added 2026-09-25) | beszel | none — NVIDIA image (hosts/nh3-ml1.yaml) for the RTX 2000E Ada; hub system 1feeeq61g4mkqre, same 5 alerts as esh-ml1 |
⚠ nh3-dev's agent was DOWN from the 2026-09-24 NH3 power recovery until
2026-09-25. Docker could not bind /mnt/smithy at boot ("no such device"): since
1cbde50 the NAS shares are automounted, and nh3-nas was not up yet. Docker does not
retry a container that fails to create, so unless-stopped never brought it back.
Started by hand, then fixed the same day: hosts/nh3-dev.yaml no longer binds
the NAS shares and BESZEL_EXTRA_FS is empty. Their capacity is nh3-nas's own
volume, which nh3-nas's agent reports.
Use infra-ops@<ip> with passwordless sudo, except vm-esh-nas:
lkraven@10.0.50.154 has Docker access. Irvine's hub address is
100.64.0.6; its retired 10.100.79.3 address caused silent loss of monitoring.
Filesystems and deployment
The canonical source is stacks/beszel/. Keep existing Compose project
names/directories and named volumes to preserve agent identity and history.
The deployment helper supports DEPLOY_DEST_STACK for legacy stack names
and DEPLOY_SUDO=1 for root-owned directories. Example:
DEPLOY_SUDO=1 DEPLOY_DEST_STACK=beszel-agent-ana \
scripts/deploy-stack.sh infra-ops@10.251.50.54 beszel --compose
Agents use host-specific overrides selected by live .env:
COMPOSE_PROFILES=agent
COMPOSE_FILE=compose.yaml:hosts/fv-ml1.yaml
BESZEL_EXTRA_FS=/extra-filesystems/tank,/extra-filesystems/home
Docker agents need actual read-only bind mounts under /extra-filesystems.
EXTRA_FILESYSTEMS=/tank alone does not expose the host filesystem. The
overrides provide those mounts; the environment refers to the container paths.
Mounts are observed before deployment. Network filesystems provide usage, not
block-device I/O counters. Shared ZFS datasets expose their available quota,
which differs from raw pool allocation and snapshot-inclusive usage.
After deployment, validate with docker compose config --quiet, then
docker compose up -d beszel-agent; restart alone does not apply env or mounts.
The reusable playbook is playbooks/beszel-filesystems.yaml with stack_dir,
host_name, and extra_fs variables. Environment backups are kept in
.env.before-fleet-wiring-20260910 on each host.
nh3-dev now has the docker compose plugin (v5.5.1, 2026-09-25); the old docker-compose binary is gone. It also
requires the external traefik-net network to exist even for the agent profile.
Only the Beszel agent is started there. On other hosts, use docker compose.
Auth supports a hub SSH public key (BESZEL_HUB_KEY) or outbound token mode
(BESZEL_TOKEN and HUB_URL). Existing auth was preserved; nh3-dev uses the
hub public key. Never copy live tokens into version control.
GPU telemetry
fv-ml1 and irv-ml1 use henrygd/beszel-agent-nvidia:0.18.7 with NVIDIA
utility access to all GPUs. Both hosts already have NVIDIA Container Toolkit.
This collects per-card utilization, VRAM, temperature, and power draw without
changing the serving containers or GPU power limits. Verified hub samples
include both RTX PRO 6000 Blackwell cards, the RTX 3090, and the RTX A6000.
⚠ A GPU LXC reads its hypervisor's CPU sensors. hwmon is not namespaced, so
esh-ml1 and nh3-ml1 would report esh-pve's / nh3-pve's coretemp_*, and their
Temperature alert fired on the HOST CPU under the GPU box's name (nh3-ml1,
2026-09-25 2105: 88.8 °C = nh3-pve's package during the 2100 vzdump, GPU at 47 °C).
Their overrides set SENSORS=-coretemp_*,acpitz (blacklist mode), which keeps
the GPU and NVMe temperatures. The CPU alert lives on the hypervisor's own system
at >95 °C: the i9-13900H's TjMax is 100 °C, and nh3-pve's 2-hour averages have
reached 88 °C on busy days, so 85 °C would fire on normal work.
Power charts are actual GPU watts, not total wall power or a PSU/circuit sizing recommendation. Other system components and workload peaks still matter.
Homepage
The existing Docker-discovered Monitoring card carries the native Beszel
widget, version 2. No manual Beszel entry is added to services.yaml.
Leaving systemId unset gives the fleet overview (systems/up).
The dedicated PocketBase superuser is beszel-monitoring@phasefinal.com.
Its credential is stored in Vaultwarden as ana-docker/beszel-monitoring and
in Homepage's live .env as HOMEPAGE_VAR_BESZEL_USERNAME and
HOMEPAGE_VAR_BESZEL_PASSWORD. Labels contain only Homepage placeholders.
The operator's existing account was not reset.
Verify one card and its real widget response:
curl -fsS http://10.0.50.45:5100/api/services |
jq '[.[] | .services[]? | select(.name=="Beszel")] | length'
curl -fsS 'http://10.0.50.45:5100/api/services/proxy?group=Monitoring&service=Beszel&endpoint=systems&index=0' |
jq '{totalItems, systems: [.items[] | {name,status}]}'
Alerts
Thirty rules cover the seven hosts above under the existing operator user:
| Condition | Threshold | Duration |
|---|---|---|
| Disk (root or any extra filesystem) | >85% | 5 minutes |
| CPU | >95% | 15 minutes |
| Memory | >90% | 10 minutes |
| Offline | down | 2 minutes |
| Temperature (fv-ml1, irv-ml1, esh-ml1, nh3-ml1) | >85 C | 5 minutes |
| Temperature, hypervisor CPU (nh3-pve, esh-pve; added 2026-09-25) | >95 C | 5 minutes |
CPU thresholds are sustained-load warnings; expected long-running compute may need tuning. GPU utilization alone is not an alarm because busy GPUs are normal. corviduo-dev remains monitored but its alert policy was not changed.
Notification URL:
generic://10.100.10.50:8096/beszel?disabletls=yes&template=json
The bridge at services/althing-alert-bridge/ forwards through postbox to the
infra-ops inbox, as the operator requested. Existing unused email delivery
was replaced with this verified route. Miranda is a later cutover, not enabled.
See that service's README for operation and recipient changes.
Acceptance on 2026-09-10: fv-ml1 Disk was temporarily lowered to 1%/1 minute;
the real alert reached althing at 15:29:45Z, thread
01M25Z0WFDJM92GPTJQF769HJ7. The threshold was then restored to 85%/5 minutes.
Verification uses postbox thread, which does not consume the inbox.
This installed configuration monitors filesystem capacity. It does not yet wire ZFS pool degradation, SMART, scrubs, or an independent hub-down watchdog. Those require separate follow-up; a green usage chart does not attest to pool health.
References: additional disks, GPU telemetry, Homepage widget.