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Graham McIntire d7741cdc0e
feat: implement unified checks system (Phase 1-4)
This commit implements the unified checks architecture that consolidates
SNMP monitoring with HTTP/TCP/DNS checks under a single "check" abstraction,
enabling consistent graphing, alerting, and management across all check types.

Database Changes:
- Add source_type and source_id to checks table for tracking auto-discovered
  vs manually created checks
- Add value field to check_results for storing numeric sensor readings
- Maintain backward compatibility with existing check_results data

New SNMP Executors:
- SnmpSensorExecutor: Poll sensor OIDs and return formatted values with
  status determination (OK/WARNING/CRITICAL based on limits)
- SnmpInterfaceExecutor: Poll interface stats (bandwidth, packets, errors)
- SnmpProcessorExecutor: Poll CPU/processor usage
- SnmpStorageExecutor: Poll disk/memory usage with percentage calculations

Check Execution Worker:
- CheckExecutorWorker: Unified Oban worker that dispatches to appropriate
  executor based on check_type (snmp_sensor, snmp_interface, http, tcp, etc.)
- Self-schedules next execution with distributed polling offsets
- Records results in check_results TimescaleDB hypertable
- Updates check state (OK/WARNING/CRITICAL/UNKNOWN)

Discovery Integration:
- Auto-creates checks during SNMP discovery for sensors, interfaces,
  processors, and storage
- Links checks to source entities via source_id for data lookup
- Enables/disables checks based on discovery results

UI Enhancements:
- Checks tab on device detail page with grouped display
- FormComponent for adding manual HTTP/TCP/DNS checks
- Empty state with "Run Discovery" prompt
- Check status badges and last checked times

Graphing:
- Update GraphLive to accept check_id parameter
- Query check_results table for time-series data
- Support all check types (SNMP, HTTP response times, etc.)

Testing:
- Comprehensive test suite for SnmpSensorExecutor (5 tests)
- Test suite for CheckExecutorWorker (7 tests)
- Test coverage for discovery check creation (6 tests)
- Remove deprecated monitoring_test.exs testing old API

Bug Fixes:
- Fix SNMP executors reading credentials from correct Device schema fields
  (device.snmp_version instead of device.snmp_device.version)
- Update agent channel test to query MonitoringCheck table directly

Code Quality:
- Extract add_snmp_credentials helper to reduce cyclomatic complexity
- Use map-based lookups for sensor formatting and check type grouping
- Apply pattern matching in dispatcher to reduce complexity
- All credo checks passing with no issues

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-02-12 16:58:40 -06:00
.claude fix: complete Nix Docker image build and untrack .claude/settings.local.json 2026-02-07 14:14:26 -06:00
.forgejo change runner for forgejo 2026-02-03 14:06:24 -06:00
.gitlab/agents Add aprs.me project to home-cluster-agent configuration 2026-01-14 13:31:23 -06:00
assets feat: add automatic network topology inference 2026-02-12 13:28:01 -06:00
c_src fix: correct library linking order in Makefile 2026-01-30 13:24:25 -06:00
config fix: cloud poller automatic rebalancing 2026-02-12 15:32:33 -06:00
docs feat: add automatic network topology inference 2026-02-12 13:28:01 -06:00
k8s back up to 2 replicas 2026-02-11 16:04:47 -06:00
lib feat: implement unified checks system (Phase 1-4) 2026-02-12 16:58:40 -06:00
mibs handle mib uploading 2026-01-18 16:29:24 -06:00
nix fix: complete Nix Docker image build and untrack .claude/settings.local.json 2026-02-07 14:14:26 -06:00
priv feat: implement unified checks system (Phase 1-4) 2026-02-12 16:58:40 -06:00
rel/overlays/bin add release 2026-01-02 14:36:38 -06:00
scripts complete overhaul of snmp engine 2026-01-30 10:41:07 -06:00
test feat: implement unified checks system (Phase 1-4) 2026-02-12 16:58:40 -06:00
towerops Add towerops/gitlab-agent-helm-release.yaml via glab file sync 2026-01-02 14:22:22 -06:00
vendor update oban_web 2026-02-08 10:11:53 -06:00
.credo.exs no cluster unless in k8s, fix credo issues 2026-02-09 13:08:51 -06:00
.dialyzer_ignore.exs Mikrotik backup and gettext start 2026-02-02 09:11:22 -06:00
.dockerignore nif ci fix complie in ci 2026-01-30 12:47:18 -06:00
.envrc.example feat: Add comprehensive Nix flakes integration 2026-02-07 12:26:54 -06:00
.formatter.exs format 2025-12-21 11:31:08 -06:00
.gitignore fix: complete Nix Docker image build and untrack .claude/settings.local.json 2026-02-07 14:14:26 -06:00
.gitlab-ci.yml restore normal gitlab ci 2026-02-08 10:56:06 -06:00
.gitlab-ci.yml.nix feat: Add comprehensive Nix flakes integration 2026-02-07 12:26:54 -06:00
.pre-commit-config.yaml update 2026-02-07 12:40:40 -06:00
.sobelow-skips Add firmware version tracking system 2026-02-01 10:46:27 -06:00
.sourceignore Add .sourceignore to exclude non-k8s files from Flux 2026-01-02 14:43:57 -06:00
.test-watch.exs add test watch 2026-01-03 12:35:26 -06:00
.tool-versions test cleanup 2026-01-19 13:29:38 -06:00
AGENTS.md 1. User Authentication 2025-12-21 13:31:59 -06:00
CHANGELOG.txt feat: implement unified checks system (Phase 1-4) 2026-02-12 16:58:40 -06:00
CLAUDE.md docs: update user-facing changelog and document changelog maintenance 2026-02-12 10:38:27 -06:00
Dockerfile fix: compile C NIF explicitly in Docker build 2026-01-30 13:04:06 -06:00
flake.lock fix: Make Nix flake compatible with macOS 2026-02-07 12:30:48 -06:00
flake.nix fix: complete Nix Docker image build and untrack .claude/settings.local.json 2026-02-07 14:14:26 -06:00
GETTEXT_MIGRATION_NOTES.md docs: mark gettext migration as complete 2026-02-02 13:24:27 -06:00
IMPLEMENTATION_SUMMARY.md Add 404-based brute force protection system 2026-02-10 16:31:48 -06:00
Makefile complete overhaul of snmp engine 2026-01-30 10:41:07 -06:00
mix.exs Add 404-based brute force protection system 2026-02-10 16:31:48 -06:00
mix.lock feat: add checks tab to device detail page (TDD cycle 1) 2026-02-12 14:50:14 -06:00
NIX-IMPLEMENTATION-SUMMARY.md feat: Add comprehensive Nix flakes integration 2026-02-07 12:26:54 -06:00
package-lock.json fix: resolve critical data loss and protobuf schema bugs (Phase 1) 2026-02-09 09:16:03 -06:00
package.json fix: resolve critical data loss and protobuf schema bugs (Phase 1) 2026-02-09 09:16:03 -06:00
README.md encryption updates 2026-02-01 17:05:55 -06:00
REFACTOR.md refactor 2026-01-31 09:35:07 -06:00
SECURITY.md security: add session inactivity timeout and comprehensive security documentation 2026-02-08 10:47:44 -06:00
SENSOR_PIPELINE_FIXES.md fix: resolve critical sensor discovery pipeline data loss 2026-02-09 08:32:24 -06:00
shell.nix feat: Add comprehensive Nix flakes integration 2026-02-07 12:26:54 -06:00
tail_logs.sh add logs helper script 2026-01-11 15:45:02 -06:00

TowerOps

Network monitoring and alerting platform built with Phoenix LiveView.

Features

  • Multi-tenant architecture - Organizations with role-based permissions
  • Site hierarchy - Organize equipment across multiple sites
  • Automated monitoring - Real-time ping monitoring with configurable intervals
  • Time-series data - Efficient storage with TimescaleDB (optional)
  • Real-time updates - LiveView dashboard with PubSub
  • Equipment tracking - Monitor network devices by IP address

Quick Start

Prerequisites

  • Elixir 1.14+
  • PostgreSQL 14+
  • (Optional) TimescaleDB for production-grade time-series performance

Setup

# Install dependencies
mix setup

# Start the server
mix phx.server

Visit localhost:4000 from your browser.

TimescaleDB (Production Only)

Development: Uses standard PostgreSQL (no TimescaleDB required).

Production: TimescaleDB is automatically enabled for optimal performance with time-series data.

# Production deployment - install TimescaleDB first
brew tap timescale/tap && brew install timescaledb  # macOS
# Then run migrations with MIX_ENV=prod
MIX_ENV=prod mix ecto.migrate

See TIMESCALEDB.md for detailed installation and configuration.

How it works: Migrations detect the environment (MIX_ENV) and only enable TimescaleDB features (hypertables, compression, retention policies, continuous aggregates) in production.

Encryption Setup (Production)

TowerOps uses AES-256-GCM encryption for sensitive data (SNMP communities, MikroTik API passwords, etc.).

Development/Test

Encryption keys are pre-configured in config/dev.exs and config/test.exs. No action required.

Production

Set the CLOAK_KEY environment variable with a base64-encoded 32-byte key:

# Generate encryption key
openssl rand -base64 32

Important:

  • Store the generated key securely in 1Password or your secrets manager
  • Never commit the production key to version control
  • Losing the encryption key makes encrypted data unrecoverable

Kubernetes Deployment

If secret doesn't exist yet (new deployment):

# Generate CLOAK_KEY (store in 1Password first!)
CLOAK_KEY=$(openssl rand -base64 32)

# Create towerops-secrets with all required keys
kubectl create secret generic towerops-secrets \
  --from-literal=RELEASE_COOKIE=$(openssl rand -base64 32) \
  --from-literal=SECRET_KEY_BASE=$(mix phx.gen.secret) \
  --from-literal=CLOAK_KEY="$CLOAK_KEY" \
  -n towerops

If secret already exists (add CLOAK_KEY to existing secret):

# Store new key in 1Password first!
# Bash/Zsh:
CLOAK_KEY=$(openssl rand -base64 32)

# Fish shell:
set CLOAK_KEY (openssl rand -base64 32)

# Method 1: Using kubectl create with dry-run and apply
kubectl create secret generic towerops-secrets \
  --from-literal=CLOAK_KEY="$CLOAK_KEY" \
  --dry-run=client -o yaml | \
  kubectl apply -f - -n towerops

# Method 2: Direct inline generation (works in all shells)
kubectl create secret generic towerops-secrets \
  --from-literal=CLOAK_KEY="$(openssl rand -base64 32)" \
  --dry-run=client -o yaml | \
  kubectl apply -f - -n towerops

# Restart pods to pick up new key
kubectl rollout restart deployment/towerops -n towerops

Development

Database

mix ecto.create       # Create database
mix ecto.migrate      # Run migrations
mix ecto.reset        # Drop, create, and migrate

Testing

mix test              # Run all tests
mix test --trace      # Run with detailed output

Code Quality

mix format            # Format code with Styler
mix compile --warnings-as-errors

Firmware Version Tracking

The system automatically checks for latest firmware versions daily (2 AM dev, 4 AM prod). To manually trigger a firmware check:

# Start IEx console
iex -S mix phx.server

# Manually trigger firmware version fetch
Oban.insert(Towerops.Workers.FirmwareVersionFetcherWorker.new(%{}))

The worker will:

  1. Fetch the latest MikroTik RouterOS version from RSS feed
  2. Store version information in the database
  3. Enable firmware update indicators on device detail pages

Check the logs for fetch results:

# View recent Oban jobs
Towerops.Repo.all(Oban.Job) |> Enum.take(5)

Learn more