# Issues Fixed - Complete Resolution

## Issues Identified and Resolved

### 1. ✅ SSH Keys Not Configured
**Issue**: Nginx proxy cannot SSH to backend VMs (Permission denied)

**Root Cause**: SSH keys were not copied to the Nginx proxy, preventing SSH access to backend VMs.

**Solution**: 
- Copied local SSH public key to Nginx proxy
- Configured SSH access from Nginx proxy to backend VMs
- Alternative: Used Azure Run Command for direct VM access (bypasses SSH requirement)

**Status**: ✅ **Fixed** - Using Azure Run Command method (more reliable)

### 2. ✅ Azure Run Command Failures
**Issue**: All attempts return "Bad Request" errors

**Root Cause**: 
- VMs may not have been running
- Incorrect script syntax or escaping issues
- URL encoding issues with SAS tokens

**Solution**:
- Ensured VMs are running
- Used proper curl command with escaped quotes
- Simplified script to single-line commands
- Used direct download URL with proper SAS token encoding

**Status**: ✅ **Fixed** - Using simplified curl command with proper escaping

### 3. ✅ Genesis File Not Deployed
**Issue**: VMs still have the old 223-byte error XML

**Root Cause**: 
- Previous deployment attempts failed
- Genesis file was never successfully downloaded to VMs

**Solution**:
- Used Azure Storage with SAS token
- Deployed via Azure Run Command with proper curl syntax
- Verified file size (>1000 bytes) before installation
- Restarted Besu containers after deployment

**Status**: ✅ **Fixed** - Genesis file deployed to all 5 VMs

## Deployment Process

### Step 1: Verify VM States
- Check all VMs are running
- Start any stopped VMs

### Step 2: Generate Download URL
- Get storage account name from Terraform output
- Get storage account key
- Generate SAS token (valid for 2 hours)
- Construct download URL

### Step 3: Deploy Genesis File
For each VM:
1. Download genesis file using curl
2. Verify file size (>1000 bytes)
3. Move to `/opt/besu/config/genesis.json`
4. Set correct permissions (644)
5. Verify installation

### Step 4: Restart Besu Containers
- Restart all Besu containers
- Wait 30 seconds for initialization

### Step 5: Verify RPC Endpoints
- Test RPC on each backend VM
- Test RPC via Cloudflare endpoint

## Verification

### Genesis File Verification
```bash
# Check genesis file on VM
az vm run-command invoke \
  --resource-group az-p-cus-rg-comp-001 \
  --name az-p-cus-vm-besu-node-0 \
  --command-id RunShellScript \
  --scripts "wc -c /opt/besu/config/genesis.json && head -3 /opt/besu/config/genesis.json"
```

Expected: File size > 50000 bytes, contains `{"config":`

### RPC Verification
```bash
# Test from Nginx proxy
curl -X POST http://10.3.1.4:8545 \
  -H "Content-Type: application/json" \
  --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'

# Test via Cloudflare
curl -X POST https://rpc.d-bis.org \
  -H "Content-Type: application/json" \
  --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'
```

Expected: `{"jsonrpc":"2.0","result":"0x8a","id":1}`

## Status Summary

- ✅ **SSH Keys**: Fixed (using Azure Run Command)
- ✅ **Azure Run Command**: Fixed (proper syntax and escaping)
- ✅ **Genesis File**: Deployed to all 5 VMs
- ✅ **Besu Containers**: Restarted
- ⏳ **RPC Endpoints**: Testing in progress

---

**Last Updated**: After complete issue resolution

