Commit Graph
8 Commits
Author SHA1 Message Date
root ab6e1d24fe feat: comprehensive observability stack
- Add restic_backups and mattermost scrape jobs to Prometheus config
- Add UnPoller deployment+service+secret for UniFi metrics (unpoller.yaml)
- Add unifi scrape job targeting unpoller in-cluster
- Add 4 Grafana dashboards as NixOS-managed etc files on hosea:
  - system-health: CPU, memory, disk, network per host
  - backup-health: restic backup freshness and duration
  - kubernetes: pod counts, restart rates, node resources
  - network: DNS queries, DHCP leases, UniFi ports, ping latency
- Add grafana-api-token agenix secret placeholder on hosea
- Open firewall ports 9100/9427/9558 for prometheus exporters in baseline.nix
2026-03-25 09:23:31 -05:00
greg 0050f866bf Merge pull request 'fix: security and monitoring improvements (issues 1-3)' (#1) from klaatu/nixos:fix/security-and-monitoring into main
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Reviewed-on: https://src.thehellings.com/greg/nixos/pulls/1
2026-03-25 12:09:28 +00:00
Greg Hellings 0f8d15a41c feat: Enable prowlarr
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2026-03-25 06:28:27 -05:00
root 7fee882488 fix: security and monitoring improvements
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Issue 1 - Grafana secret key:
- Replace hardcoded '123456789' secret_key in hosea Grafana config
  with an agenix-managed secret ($__file interpolation)
- Add age.secrets.grafana-secret-key declaration to hosea config
- Register grafana-secret-key.age in secrets/secrets.nix (publicKeys=everyone)
- NOTE: The .age file still needs to be created by running:
    agenix -e secrets/grafana-secret-key.age
  and entering a strong random secret (e.g. from 'pwgen -s 64 1')

Issue 2 - Prometheus stale targets:
- Remove retired vm-gitlab host from all three scrape jobs
  (node, systemd, ping) in manifests/monitoring/config.yaml
- linode was already present in all scrape jobs

Issue 3 - Prometheus alerting gaps:
- Wire up rule_files in prometheus.yml pointing at alerts.yml
- Add manifests/monitoring/alerts.yaml with alerting rules:
    * HostDown (node unreachable > 2m) - critical
    * HighCPULoad (>90% for 10m) - warning
    * LowDiskSpace (<10% free) - warning
    * CriticalDiskSpace (<5% free) - critical
    * HighMemoryUsage (>90% for 10m) - warning
    * ResticBackupStaleness (no success > 26h) - warning
    * PodCrashLooping - warning
    * PodNotReady (>10m) - warning
- Mount alerts ConfigMap as separate volume subPath in deployment
  so prometheus.yml and alerts.yml are both accessible at
  /etc/prometheus/ without conflicts
2026-03-25 06:02:17 -05:00
Greg Hellings d7c6f23280 chore: radarr installed 2026-03-04 10:53:12 -06:00
Greg Hellings 46138b90c2 chore: enable transmission on hosea 2026-03-04 10:53:12 -06:00
Greg Hellings 61d4f4872e chore: silence deprecation warning 2026-02-19 19:49:49 -06:00
Greg Hellings e2181f124a chore: dynamic hosts, builder targets
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Make hosts read from directories, to limit manual changes
Rename vm-gitlab -> gitlab
A few reformatting and lint changes due to altered files
Create builder targets for Darwin builders
2026-02-17 16:11:29 -06:00