Sanitized mirror from private repository - 2026-04-19 09:44:40 UTC
This commit is contained in:
Gitea Mirror Bot
285
docs/troubleshooting/CONTAINER_DIAGNOSIS_REPORT.md
Normal file
285
docs/troubleshooting/CONTAINER_DIAGNOSIS_REPORT.md
Normal file
@@ -0,0 +1,285 @@
|
||||
# Container Diagnosis Report
|
||||
**Generated**: February 9, 2026
|
||||
**System**: homelab-vm environment
|
||||
**Focus**: Portainer and Watchtower containers
|
||||
|
||||
## ⚠️ **CRITICAL CORRECTION NOTICE**
|
||||
**This report has been CORRECTED. The original Docker socket security recommendation was WRONG and would have broken Watchtower. See WATCHTOWER_SECURITY_ANALYSIS.md for the corrected analysis.**
|
||||
|
||||
---
|
||||
|
||||
## 🔍 **Executive Summary**
|
||||
|
||||
**Overall Status**: ✅ **HEALTHY** with minor configuration discrepancies
|
||||
**Critical Issues**: None
|
||||
**Recommendations**: 3 configuration optimizations identified
|
||||
|
||||
---
|
||||
|
||||
## 📊 **Container Status Overview**
|
||||
|
||||
### **✅ Watchtower Container**
|
||||
- **Status**: ✅ Running and healthy (6 days uptime)
|
||||
- **Image**: `containrrr/watchtower:latest`
|
||||
- **Health**: Healthy
|
||||
- **Restart Count**: 0 (stable)
|
||||
- **Network**: `watchtower-stack_default`
|
||||
|
||||
### **✅ Portainer Edge Agent**
|
||||
- **Status**: ✅ Running (6 days uptime)
|
||||
- **Image**: `portainer/agent:2.33.6` (updated from configured 2.27.9)
|
||||
- **Restart Count**: 0 (stable)
|
||||
- **Connection**: Active WebSocket connection to Portainer server
|
||||
|
||||
### **❌ Portainer Server**
|
||||
- **Status**: ❌ **NOT RUNNING** on this host
|
||||
- **Expected**: Main Portainer server should be running
|
||||
- **Impact**: Edge agent connects to remote server (100.83.230.112)
|
||||
|
||||
---
|
||||
|
||||
## 🔧 **Detailed Analysis**
|
||||
|
||||
### **1. Watchtower Configuration Analysis**
|
||||
|
||||
#### **Running Configuration vs Repository Configuration**
|
||||
|
||||
| Setting | Repository Config | Running Container | Status |
|
||||
|---------|------------------|-------------------|---------|
|
||||
| **Schedule** | `"0 0 */2 * * *"` (every 2 hours) | `"0 0 4 * * *"` (daily at 4 AM) | ⚠️ **MISMATCH** |
|
||||
| **Cleanup** | `true` | `true` | ✅ Match |
|
||||
| **API Token** | `REDACTED_WATCHTOWER_TOKEN` | `watchtower-update-token` | ⚠️ **MISMATCH** |
|
||||
| **Notifications** | Not configured | `ntfy://192.168.0.210:8081/updates` | ⚠️ **EXTRA** |
|
||||
| **Docker Socket** | Read-only | Read-write | ⚠️ **SECURITY RISK** |
|
||||
|
||||
#### **Issues Identified**
|
||||
|
||||
1. **Schedule Mismatch**:
|
||||
- Repository: Every 2 hours
|
||||
- Running: Daily at 4 AM
|
||||
- **Impact**: Less frequent updates than intended
|
||||
|
||||
2. **Security Configuration Missing**:
|
||||
- Repository specifies read-only Docker socket
|
||||
- Running container has read-write access
|
||||
- **Impact**: Potential security vulnerability
|
||||
|
||||
3. **Notification Error**:
|
||||
```
|
||||
Failed to send ntfy notification: http: server gave HTTP response to HTTPS client
|
||||
```
|
||||
- **Cause**: HTTPS/HTTP protocol mismatch
|
||||
- **Impact**: Update notifications not working
|
||||
|
||||
### **2. Portainer Configuration Analysis**
|
||||
|
||||
#### **Edge Agent Status**
|
||||
```
|
||||
Connection Pattern: Every ~5 minutes
|
||||
- Connect to ws://100.83.230.112:8000
|
||||
- Maintain connection for ~5 minutes
|
||||
- Disconnect and reconnect
|
||||
- Latency: ~6-7ms (good)
|
||||
```
|
||||
|
||||
#### **Issues Identified**
|
||||
|
||||
1. **Version Drift**:
|
||||
- Repository config: `portainer/agent:2.27.9`
|
||||
- Running container: `portainer/agent:2.33.6`
|
||||
- **Cause**: Watchtower auto-updated the agent
|
||||
- **Impact**: Positive (newer version with security fixes)
|
||||
|
||||
2. **Missing Main Server**:
|
||||
- No Portainer server running locally
|
||||
- Agent connects to remote server (100.83.230.112)
|
||||
- **Impact**: Depends on remote server availability
|
||||
|
||||
3. **Port Conflict**:
|
||||
- Repository expects Portainer on port 10000 (mapped from 9000)
|
||||
- Port 9000 currently used by Redlib service
|
||||
- **Impact**: Would prevent local Portainer server startup
|
||||
|
||||
### **3. Network and Resource Analysis**
|
||||
|
||||
#### **Resource Usage**
|
||||
- **Watchtower**: Minimal CPU/memory usage (as expected)
|
||||
- **Portainer Agent**: Minimal resource footprint
|
||||
- **Network**: Stable connections, good latency
|
||||
|
||||
#### **Network Configuration**
|
||||
- **Watchtower**: Connected to `watchtower-stack_default`
|
||||
- **Portainer Agent**: Using default Docker network
|
||||
- **External Connectivity**: Both containers have internet access
|
||||
|
||||
---
|
||||
|
||||
## 🚨 **Critical Findings**
|
||||
|
||||
### **Security Issues**
|
||||
|
||||
1. **Watchtower Docker Socket Access**:
|
||||
- **Risk Level**: ✅ **ACCEPTABLE** (CORRECTED ASSESSMENT)
|
||||
- **Issue**: ~~Read-write access instead of read-only~~ **CORRECTION: Read-write access is REQUIRED**
|
||||
- **Recommendation**: ~~Update to read-only access~~ **KEEP current access - required for functionality**
|
||||
|
||||
2. **Notification Protocol Mismatch**:
|
||||
- **Risk Level**: LOW
|
||||
- **Issue**: HTTPS client trying to connect to HTTP server
|
||||
- **Recommendation**: Fix notification URL protocol
|
||||
|
||||
### **Configuration Drift**
|
||||
|
||||
1. **Watchtower Schedule**:
|
||||
- **Impact**: Updates running less frequently than intended
|
||||
- **Recommendation**: Align running config with repository
|
||||
|
||||
2. **Portainer Agent Version**:
|
||||
- **Impact**: Positive (newer version)
|
||||
- **Recommendation**: Update repository to match running version
|
||||
|
||||
---
|
||||
|
||||
## 🔧 **Recommendations**
|
||||
|
||||
### **Priority 1: ⚠️ CORRECTED - NO SECURITY FIX NEEDED**
|
||||
```yaml
|
||||
# ❌ DO NOT MAKE DOCKER SOCKET READ-ONLY - This would BREAK Watchtower!
|
||||
# ✅ Current configuration is CORRECT and REQUIRED:
|
||||
volumes:
|
||||
- /var/run/docker.sock:/var/run/docker.sock # Read-write access REQUIRED
|
||||
```
|
||||
|
||||
### **Priority 2: Configuration Alignment**
|
||||
```yaml
|
||||
# Update Watchtower environment variables
|
||||
environment:
|
||||
WATCHTOWER_SCHEDULE: "0 0 */2 * * *" # Every 2 hours as intended
|
||||
WATCHTOWER_HTTP_API_TOKEN: "REDACTED_HTTP_TOKEN" # Match repository
|
||||
```
|
||||
|
||||
### **Priority 2: Notification Fix** (ACTUAL PRIORITY 1)
|
||||
```yaml
|
||||
# Fix notification URL protocol
|
||||
WATCHTOWER_NOTIFICATION_URL: http://192.168.0.210:8081/updates # Use HTTP not HTTPS
|
||||
```
|
||||
|
||||
### **Priority 4: Repository Updates**
|
||||
```yaml
|
||||
# Update Portainer agent version in repository
|
||||
image: portainer/agent:2.33.6 # Match running version
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## 📋 **Action Plan**
|
||||
|
||||
### **Immediate Actions (Next 24 hours)**
|
||||
|
||||
1. **⚠️ CORRECTED: NO SECURITY CHANGES NEEDED**:
|
||||
```bash
|
||||
# ❌ DO NOT run the original security fix script!
|
||||
# ❌ DO NOT make Docker socket read-only!
|
||||
# ✅ Current Docker socket access is CORRECT and REQUIRED
|
||||
```
|
||||
|
||||
2. **Fix Notification Protocol** (ACTUAL PRIORITY 1):
|
||||
```bash
|
||||
# Use the corrected notification fix script:
|
||||
sudo /path/to/scripts/fix-watchtower-notifications.sh
|
||||
```
|
||||
|
||||
### **Short-term Actions (Next week)**
|
||||
|
||||
1. **Align Configurations**:
|
||||
- Update repository configurations to match running containers
|
||||
- Standardize Watchtower schedule across all hosts
|
||||
- Document configuration management process
|
||||
|
||||
2. **Portainer Assessment**:
|
||||
- Decide if local Portainer server is needed
|
||||
- If yes, resolve port 9000 conflict with Redlib
|
||||
- If no, document remote server dependency
|
||||
|
||||
### **Long-term Actions (Next month)**
|
||||
|
||||
1. **Configuration Management**:
|
||||
- Implement configuration drift detection
|
||||
- Set up automated configuration validation
|
||||
- Create configuration backup/restore procedures
|
||||
|
||||
2. **Monitoring Enhancement**:
|
||||
- Set up monitoring for container health
|
||||
- Implement alerting for configuration drift
|
||||
- Create dashboard for container status
|
||||
|
||||
---
|
||||
|
||||
## 🔍 **Verification Commands**
|
||||
|
||||
### **Check Current Status**
|
||||
```bash
|
||||
# Container status
|
||||
docker ps --format "table {{.Names}}\t{{.Status}}\t{{.Image}}"
|
||||
|
||||
# Watchtower logs
|
||||
docker logs watchtower --tail 50
|
||||
|
||||
# Portainer agent logs
|
||||
docker logs portainer_edge_agent --tail 50
|
||||
```
|
||||
|
||||
### **Verify Fixes**
|
||||
```bash
|
||||
# Check Docker socket permissions
|
||||
docker inspect watchtower | jq '.Mounts[] | select(.Destination=="/var/run/docker.sock")'
|
||||
|
||||
# Test notification endpoint
|
||||
curl -X POST http://192.168.0.210:8081/updates -d "Test message"
|
||||
|
||||
# Verify schedule
|
||||
docker inspect watchtower | jq '.Config.Env[] | select(contains("SCHEDULE"))'
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## 📈 **Health Metrics**
|
||||
|
||||
### **Current Performance**
|
||||
- **Uptime**: 6 days (excellent stability)
|
||||
- **Restart Count**: 0 (no crashes)
|
||||
- **Memory Usage**: Within expected limits
|
||||
- **Network Latency**: 6-7ms (excellent)
|
||||
|
||||
### **Success Indicators**
|
||||
- ✅ Containers running without crashes
|
||||
- ✅ Network connectivity stable
|
||||
- ✅ Resource usage appropriate
|
||||
- ✅ Automatic updates functioning (Portainer agent updated)
|
||||
|
||||
### **Areas for Improvement**
|
||||
- ⚠️ Configuration drift management
|
||||
- ⚠️ Security hardening (Docker socket access)
|
||||
- ⚠️ Notification system reliability
|
||||
|
||||
---
|
||||
|
||||
## 🎯 **Conclusion**
|
||||
|
||||
Your Portainer and Watchtower containers are **fundamentally healthy and functional**. The issues identified are primarily **configuration mismatches** and **minor security improvements** rather than critical failures.
|
||||
|
||||
**Key Strengths**:
|
||||
- Stable operation (6 days uptime, zero restarts)
|
||||
- Automatic updates working (Portainer agent successfully updated)
|
||||
- Good network connectivity and performance
|
||||
|
||||
**Priority Actions**:
|
||||
1. Fix Docker socket security (read-only access)
|
||||
2. Align repository configurations with running containers
|
||||
3. Fix notification protocol mismatch
|
||||
|
||||
**Overall Assessment**: ✅ **HEALTHY** with room for optimization
|
||||
|
||||
---
|
||||
|
||||
*This diagnosis was performed on February 9, 2026, and reflects the current state of containers in the homelab-vm environment.*
|
||||
Reference in New Issue
Block a user