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| author | grothedev <grothedev@gmail.com> | 2025-10-26 19:10:59 -0400 |
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| committer | grothedev <grothedev@gmail.com> | 2025-10-26 19:10:59 -0400 |
| commit | 3dadb3aa1920f25a7f6d4b4775a83cabdbd8275b (patch) | |
| tree | c27772a438203706fc3c212184268bfbb2ebf6b5 /STATUS.md | |
first commit. almost all claude. now time to review
Diffstat (limited to 'STATUS.md')
| -rw-r--r-- | STATUS.md | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/STATUS.md b/STATUS.md new file mode 100644 index 0000000..371bfbd --- /dev/null +++ b/STATUS.md @@ -0,0 +1,327 @@ +# Project Status Report + +**Generated**: 2025-10-26 +**Project**: cluster-from-systemd +**Version**: 0.1.0-alpha + +## Executive Summary + +✅ **Configuration system complete and functional** +✅ **Boot-time detection system implemented** +✅ **All major service units created** +✅ **Configuration validation passing** + +## What Works Now + +### 1. Configuration Management ✅ +- Define entire cluster topology in YAML +- 5 pre-configured node types (master, workers, kafka, storage) +- 5 service configurations (Kubernetes, Ceph, Kafka, MQTT, DNS) +- Comprehensive validation tool catches errors before build + +**Test it:** +```bash +python3 tools/validate-config.py configs/ +# Output: ✓ Validation PASSED +``` + +### 2. Node Detection System ✅ +- Automatically identifies which node the system is on boot +- Detection methods: MAC address → IP address → hostname → interactive +- Creates symlink to node-specific configuration +- Generates environment files for all services + +**Components:** +- `tools/cluster-detect.sh` - Main detection logic +- `tools/generate-environment-files.sh` - Creates .env files +- `systemd/cluster-detect.service` - Runs at early boot + +### 3. Role-Based Service Activation ✅ +- Maps node roles to systemd targets +- Automatically enables and starts appropriate services +- Supports multi-role nodes (e.g., worker + kafka-broker) + +**Role mappings:** +- master → kubernetes-master.target → api-server, scheduler, controller, etcd +- worker → kubernetes-worker.target → kubelet +- kafka-broker → kafka.target → kafka.service +- ceph-osd → ceph-osd.target → ceph-osd@.service + +### 4. Systemd Service Units ✅ +**11 Service Units Created:** +1. containerd.service - Container runtime +2. kubelet.service - K8s node agent +3. kube-apiserver.service - K8s API server +4. kube-controller-manager.service - K8s controller +5. kube-scheduler.service - K8s scheduler +6. etcd.service - Distributed key-value store +7. kafka.service - Kafka broker (KRaft mode) +8. ceph-mon@.service - Ceph monitor +9. ceph-osd@.service - Ceph OSD +10. mosquitto.service - MQTT broker +11. coredns.service - DNS server + +**7 Target Units:** +- kubernetes-master.target +- kubernetes-worker.target +- kafka.target +- ceph-mon.target +- ceph-osd.target +- mqtt.target +- dns.target + +### 5. Service Configuration Generators ✅ +**8 Configuration Generator Scripts:** +- kubelet-config-generator.sh +- kube-apiserver-config-generator.sh +- etcd-config-generator.sh +- kafka-config-generator.sh +- ceph-mon-init.sh +- ceph-osd-init.sh +- mosquitto-config-generator.sh +- coredns-config-generator.sh + +These run at service startup to generate runtime configs from cluster YAML. + +## Project Statistics + +``` +Total Files: 42 +Total Lines: 2,064 +Configuration: 11 files (cluster + services + nodes) +Systemd Units: 19 files (services + targets) +Scripts: 12 files (bash + python) +Documentation: 4 files (README, spec, schema, implementation) +``` + +## Architecture Diagram + +``` +┌──────────────┐ +│ ISO Boot │ +└──────┬───────┘ + │ + ▼ +┌─────────────────────────┐ +│ cluster-detect.service │ ← Very early boot +│ - Detect node identity │ +│ - Generate env files │ +│ - Activate roles │ +└──────┬──────────────────┘ + │ + ▼ +┌──────────────────────────────────────────┐ +│ Systemd Targets │ +│ ┌────────────┐ ┌──────────┐ │ +│ │ k8s-master │ │ k8s-work │ ┌──────┐ │ +│ │ .target │ │ er.target│ │kafka │ │ +│ └─────┬──────┘ └────┬─────┘ │.tgt │ │ +└────────┼──────────────┼────────┴───┬───┘ + │ │ │ + ▼ ▼ ▼ +┌─────────────┐ ┌──────────┐ ┌────────┐ +│ API Server │ │ Kubelet │ │ Kafka │ +│ Controller │ │ │ │ Broker │ +│ Scheduler │ │ │ │ │ +│ etcd │ │ │ │ │ +└─────────────┘ └──────────┘ └────────┘ +``` + +## What's Missing (Critical Path) + +### 1. Certificate Generation 🔴 +**Priority: CRITICAL** + +The Kubernetes components require a full PKI: +- CA certificate and key +- API server certificate +- Kubelet certificates +- etcd certificates +- Service account keys + +**Action needed:** +- Script to generate all required certificates +- Distribution to appropriate nodes +- Secure key storage + +### 2. Network Configuration 🔴 +**Priority: CRITICAL** + +Systems need network setup before services start: +- Static IP assignment based on cluster.yaml +- Network interface configuration +- Calico CNI plugin installation +- Pod network CIDR setup + +**Action needed:** +- Network configuration script (runs before cluster-detect) +- Calico manifest deployment + +### 3. Cluster Bootstrapping 🟡 +**Priority: HIGH** + +First-time cluster initialization: +- etcd cluster formation (multi-master) +- Kubernetes join tokens for workers +- Ceph monitor quorum setup +- Ceph OSD initialization with devices +- Kafka cluster ID generation + +**Action needed:** +- Bootstrap orchestration script +- First-master vs additional-master detection +- Worker join logic + +### 4. ISO Builder 🟡 +**Priority: HIGH** + +Package everything into bootable image: +- Base Fedora/Rocky Linux +- Install all binaries (kubelet, kafka, ceph, etc.) +- Embed configs/ directory +- Install systemd units +- Install scripts to /usr/local/bin/ + +**Action needed:** +- Kickstart/Anaconda integration +- Image builder script (lorax/mkosi) +- Binary download and packaging + +### 5. Post-Install Persistence 🟢 +**Priority: MEDIUM** + +After detection, persist configuration: +- Save detected identity to disk +- Prevent re-detection on reboot +- Handle re-detection on hardware change + +**Action needed:** +- Already partially implemented +- Needs testing and hardening + +## Testing Status + +| Component | Unit Tests | Integration Tests | E2E Tests | +|-----------|------------|-------------------|-----------| +| Configuration Validation | ✅ Pass | N/A | N/A | +| Node Detection | ⏳ Manual | ❌ Not done | ❌ Not done | +| Role Activation | ⏳ Manual | ❌ Not done | ❌ Not done | +| Service Units | ❌ Not done | ❌ Not done | ❌ Not done | +| Full Boot | ❌ Not done | ❌ Not done | ❌ Not done | + +## Development Roadmap + +### Phase 1: Make it Boot (Current → Week 2) +- [ ] Certificate generation scripts +- [ ] Network configuration +- [ ] Basic Kubernetes cluster formation +- [ ] ISO builder (basic version) +- [ ] VM testing + +### Phase 2: Make it Work (Week 3-4) +- [ ] Ceph cluster initialization +- [ ] Kafka cluster setup +- [ ] Multi-master support +- [ ] Worker join automation +- [ ] End-to-end testing + +### Phase 3: Make it Production-Ready (Week 5-8) +- [ ] Monitoring integration +- [ ] Logging aggregation +- [ ] Update mechanism +- [ ] Backup and restore +- [ ] Security hardening +- [ ] Documentation + +## Current Limitations + +1. **No actual cluster bootstrap** - Services won't start without certs/config +2. **Single master only** - Multi-master etcd not configured +3. **No CNI** - Pod networking won't work +4. **Manual certificate creation** - Must be done out of band +5. **No ISO builder** - Can't create bootable image yet +6. **No network setup** - Assumes pre-configured networking +7. **Ceph incomplete** - Monitor/OSD init are stubs +8. **No secrets management** - Everything in plain text + +## How to Test Locally + +### Validate Configuration +```bash +python3 tools/validate-config.py configs/ +``` + +### Test Node Detection (Dry Run) +```bash +export CONFIG_DIR=$(pwd)/configs +sudo tools/cluster-detect.sh +# Will attempt MAC/IP detection, fall back to interactive +``` + +### Inspect Generated Service Files +```bash +ls -la systemd/ +cat systemd/kubelet.service +cat systemd/kubernetes-master.target +``` + +### Review Configuration Generators +```bash +ls -la tools/*-generator.sh +cat tools/kafka-config-generator.sh +``` + +## Next Session Goals + +Recommend tackling in this order: + +1. **Certificate Generation** (2-3 hours) + - Write script to generate Kubernetes PKI + - Store certs in /etc/kubernetes/pki/ + - Add to cluster-detect flow + +2. **Network Configuration** (1-2 hours) + - Script to set static IP from cluster.yaml + - Configure network interfaces + - Test on VM + +3. **Basic ISO Builder** (3-4 hours) + - Download Fedora netboot + - Create kickstart file + - Package configs and scripts + - Build test ISO + +4. **VM Testing** (2-3 hours) + - Boot test ISO in VM + - Verify detection works + - Check service startup + - Debug issues + +## Questions for Consideration + +1. **Certificate strategy**: Generate at build time or first boot? +2. **Multi-master**: How to handle etcd cluster formation? +3. **Secrets**: Use Vault, sealed-secrets, or simple encryption? +4. **Updates**: In-place or blue-green deployment? +5. **Monitoring**: Integrated or separate cluster? + +## Conclusion + +**The foundation is solid.** We have: +- ✅ Complete configuration system +- ✅ Automatic node detection +- ✅ Role-based service activation +- ✅ All systemd units defined +- ✅ Service configuration generators + +**Next critical steps:** +1. Certificate generation +2. Network setup +3. ISO builder +4. Test in VMs + +The project is well-positioned to become a working prototype with 8-16 more hours of focused development. + +--- + +**Want to continue?** Recommend starting with certificate generation scripts next. |
