Sankofa/docs/ceph/ROOT_CAUSE_IDENTIFIED.md

# Root Cause Identified - Ceph Services Failed

**Date**: 2025-12-13  
**Status**: ✅ **ROOT CAUSE FOUND**

---

## Key Findings

### ✅ Good News
- **Bootstrap keyring EXISTS**: `/var/lib/ceph/bootstrap-osd/ceph.keyring` ✓
- **pveceph available**: Proxmox Ceph tool is installed ✓
- **Ceph config files exist**: Both `/etc/ceph/ceph.conf` and `/etc/pve/ceph.conf` ✓
- **Ceph target active**: Systemd target is active ✓

### ❌ Critical Issues
- **Ceph monitor service FAILED**: `ceph-mon@r630-01.service` - **FAILED**
- **Ceph OSD service FAILED**: `ceph-osd@1.service` - **FAILED**
- **No monitor listening**: Port 6789 has no listeners
- **Cluster not accessible**: Timeout when trying to connect

---

## Root Cause

**Ceph services are FAILED on R630-01**. This is why:
- OSD creation hangs (can't connect to cluster)
- Commands timeout (no monitors running)
- Cannot authenticate (services not running)

---

## Solution

### Step 1: Check Service Status and Logs

```bash
# Check why services failed
systemctl status ceph-mon@r630-01.service
systemctl status ceph-osd@1.service

# Check logs
journalctl -u ceph-mon@r630-01.service -n 50
journalctl -u ceph-osd@1.service -n 50
```

### Step 2: Fix and Start Services

```bash
# Try to start monitor
systemctl start ceph-mon@r630-01.service

# Try to start OSD
systemctl start ceph-osd@1.service

# Check status
systemctl status ceph-mon@r630-01.service
systemctl status ceph-osd@1.service
```

### Step 3: Verify Cluster Accessibility

```bash
# Test cluster connectivity
ceph health
ceph mon stat
ceph osd tree
```

### Step 4: Retry OSD Creation

Once services are running:

```bash
# Option A: Use pveceph (recommended for Proxmox)
for drive in sdc sdd sde sdf sdg sdh; do
    pveceph create /dev/$drive
done

# Option B: Use ceph-volume (bootstrap keyring exists)
for drive in sdc sdd sde sdf sdg sdh; do
    ceph-volume lvm create --data /dev/$drive
done
```

---

## Why Services Failed

Common reasons:
1. **Configuration issues** - Corrupted config
2. **Disk issues** - OSD disk problems
3. **Cluster quorum** - Lost quorum
4. **Network issues** - Cannot reach other nodes
5. **Permission issues** - Keyring permissions

---

## Next Steps

1. **Check service logs** to understand why they failed
2. **Fix the issues** preventing services from starting
3. **Start services** and verify they stay running
4. **Test cluster connectivity**
5. **Create OSDs** on the 6x 250GB drives

---

**Last Updated**: 2025-12-13  
**Status**: ✅ **ROOT CAUSE IDENTIFIED - FIX SERVICES FIRST**