742 lines
21 KiB
Markdown
742 lines
21 KiB
Markdown
# Phase 2: High Availability Infrastructure (Weeks 5-8)
|
|
|
|
This phase focuses on implementing the supporting infrastructure required for high availability, including MinIO clusters, PostgreSQL HA setup, Redis clusters, and file storage abstraction.
|
|
|
|
## Overview
|
|
|
|
Phase 2 transforms MotoVaultPro's supporting infrastructure from single-instance services to highly available, distributed systems. This phase establishes the foundation for true high availability by eliminating all single points of failure in the data layer.
|
|
|
|
## Key Objectives
|
|
|
|
- **MinIO High Availability**: Deploy distributed object storage with erasure coding
|
|
- **File Storage Abstraction**: Create unified interface for file operations
|
|
- **PostgreSQL HA**: Implement primary/replica configuration with automated failover
|
|
- **Redis Cluster**: Deploy distributed caching and session storage
|
|
- **Data Migration**: Seamless transition from local storage to distributed systems
|
|
|
|
## 2.1 MinIO High Availability Setup
|
|
|
|
**Objective**: Deploy a highly available MinIO cluster for file storage with automatic failover.
|
|
|
|
**Architecture Overview**:
|
|
MinIO will be deployed as a distributed cluster with erasure coding for data protection and automatic healing capabilities.
|
|
|
|
### MinIO Cluster Configuration
|
|
|
|
```yaml
|
|
# MinIO Tenant Configuration
|
|
apiVersion: minio.min.io/v2
|
|
kind: Tenant
|
|
metadata:
|
|
name: motovault-minio
|
|
namespace: motovault
|
|
spec:
|
|
image: minio/minio:RELEASE.2024-01-16T16-07-38Z
|
|
creationDate: 2024-01-20T10:00:00Z
|
|
pools:
|
|
- servers: 4
|
|
name: pool-0
|
|
volumesPerServer: 4
|
|
volumeClaimTemplate:
|
|
metadata:
|
|
name: data
|
|
spec:
|
|
accessModes:
|
|
- ReadWriteOnce
|
|
resources:
|
|
requests:
|
|
storage: 100Gi
|
|
storageClassName: fast-ssd
|
|
mountPath: /export
|
|
subPath: /data
|
|
requestAutoCert: false
|
|
certConfig:
|
|
commonName: ""
|
|
organizationName: []
|
|
dnsNames: []
|
|
console:
|
|
image: minio/console:v0.22.5
|
|
replicas: 2
|
|
consoleSecret:
|
|
name: motovault-minio-console-secret
|
|
configuration:
|
|
name: motovault-minio-config
|
|
```
|
|
|
|
### Implementation Tasks
|
|
|
|
#### 1. Deploy MinIO Operator
|
|
```bash
|
|
kubectl apply -k "github.com/minio/operator/resources"
|
|
```
|
|
|
|
#### 2. Create MinIO cluster configuration with erasure coding
|
|
- Configure 4+ nodes for optimal erasure coding
|
|
- Set up data protection with automatic healing
|
|
- Configure storage classes for performance
|
|
|
|
#### 3. Configure backup policies for disaster recovery
|
|
```yaml
|
|
apiVersion: v1
|
|
kind: ConfigMap
|
|
metadata:
|
|
name: minio-backup-policy
|
|
data:
|
|
backup-policy.json: |
|
|
{
|
|
"rules": [
|
|
{
|
|
"id": "motovault-backup",
|
|
"status": "Enabled",
|
|
"transition": {
|
|
"days": 30,
|
|
"storage_class": "GLACIER"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
```
|
|
|
|
#### 4. Set up monitoring with Prometheus metrics
|
|
```yaml
|
|
apiVersion: monitoring.coreos.com/v1
|
|
kind: ServiceMonitor
|
|
metadata:
|
|
name: minio-metrics
|
|
spec:
|
|
selector:
|
|
matchLabels:
|
|
app: minio
|
|
endpoints:
|
|
- port: http-minio
|
|
path: /minio/v2/metrics/cluster
|
|
```
|
|
|
|
#### 5. Create service endpoints for application connectivity
|
|
```yaml
|
|
apiVersion: v1
|
|
kind: Service
|
|
metadata:
|
|
name: minio-service
|
|
spec:
|
|
selector:
|
|
app: minio
|
|
ports:
|
|
- name: http
|
|
port: 9000
|
|
targetPort: 9000
|
|
- name: console
|
|
port: 9001
|
|
targetPort: 9001
|
|
```
|
|
|
|
### MinIO High Availability Features
|
|
|
|
- **Erasure Coding**: Data is split across multiple drives with parity for automatic healing
|
|
- **Distributed Architecture**: No single point of failure
|
|
- **Automatic Healing**: Corrupted data is automatically detected and repaired
|
|
- **Load Balancing**: Built-in load balancing across cluster nodes
|
|
- **Bucket Policies**: Fine-grained access control for different data types
|
|
|
|
## 2.2 File Storage Abstraction Implementation
|
|
|
|
**Objective**: Create an abstraction layer that allows seamless switching between local filesystem and MinIO object storage.
|
|
|
|
**Current State**:
|
|
- Direct filesystem operations throughout the application
|
|
- File paths hardcoded in various controllers and services
|
|
- No abstraction for different storage backends
|
|
|
|
**Target State**:
|
|
- Unified file storage interface
|
|
- Pluggable storage implementations
|
|
- Transparent migration between storage types
|
|
|
|
### Implementation Tasks
|
|
|
|
#### 1. Define storage abstraction interface
|
|
```csharp
|
|
public interface IFileStorageService
|
|
{
|
|
Task<string> UploadFileAsync(Stream fileStream, string fileName, string contentType, CancellationToken cancellationToken = default);
|
|
Task<Stream> DownloadFileAsync(string fileId, CancellationToken cancellationToken = default);
|
|
Task<bool> DeleteFileAsync(string fileId, CancellationToken cancellationToken = default);
|
|
Task<FileMetadata> GetFileMetadataAsync(string fileId, CancellationToken cancellationToken = default);
|
|
Task<IEnumerable<FileMetadata>> ListFilesAsync(string prefix = null, CancellationToken cancellationToken = default);
|
|
Task<string> GeneratePresignedUrlAsync(string fileId, TimeSpan expiration, CancellationToken cancellationToken = default);
|
|
}
|
|
|
|
public class FileMetadata
|
|
{
|
|
public string Id { get; set; }
|
|
public string FileName { get; set; }
|
|
public string ContentType { get; set; }
|
|
public long Size { get; set; }
|
|
public DateTime CreatedDate { get; set; }
|
|
public DateTime ModifiedDate { get; set; }
|
|
public Dictionary<string, string> Tags { get; set; }
|
|
}
|
|
```
|
|
|
|
#### 2. Implement MinIO storage service
|
|
```csharp
|
|
public class MinIOFileStorageService : IFileStorageService
|
|
{
|
|
private readonly IMinioClient _minioClient;
|
|
private readonly ILogger<MinIOFileStorageService> _logger;
|
|
private readonly string _bucketName;
|
|
|
|
public MinIOFileStorageService(IMinioClient minioClient, IConfiguration configuration, ILogger<MinIOFileStorageService> logger)
|
|
{
|
|
_minioClient = minioClient;
|
|
_logger = logger;
|
|
_bucketName = configuration["MinIO:BucketName"] ?? "motovault-files";
|
|
}
|
|
|
|
public async Task<string> UploadFileAsync(Stream fileStream, string fileName, string contentType, CancellationToken cancellationToken = default)
|
|
{
|
|
var fileId = $"{Guid.NewGuid()}/{fileName}";
|
|
|
|
try
|
|
{
|
|
await _minioClient.PutObjectAsync(new PutObjectArgs()
|
|
.WithBucket(_bucketName)
|
|
.WithObject(fileId)
|
|
.WithStreamData(fileStream)
|
|
.WithObjectSize(fileStream.Length)
|
|
.WithContentType(contentType)
|
|
.WithHeaders(new Dictionary<string, string>
|
|
{
|
|
["X-Amz-Meta-Original-Name"] = fileName,
|
|
["X-Amz-Meta-Upload-Date"] = DateTime.UtcNow.ToString("O")
|
|
}), cancellationToken);
|
|
|
|
_logger.LogInformation("File uploaded successfully: {FileId}", fileId);
|
|
return fileId;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.LogError(ex, "Failed to upload file: {FileName}", fileName);
|
|
throw;
|
|
}
|
|
}
|
|
|
|
public async Task<Stream> DownloadFileAsync(string fileId, CancellationToken cancellationToken = default)
|
|
{
|
|
try
|
|
{
|
|
var memoryStream = new MemoryStream();
|
|
await _minioClient.GetObjectAsync(new GetObjectArgs()
|
|
.WithBucket(_bucketName)
|
|
.WithObject(fileId)
|
|
.WithCallbackStream(stream => stream.CopyTo(memoryStream)), cancellationToken);
|
|
|
|
memoryStream.Position = 0;
|
|
return memoryStream;
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.LogError(ex, "Failed to download file: {FileId}", fileId);
|
|
throw;
|
|
}
|
|
}
|
|
|
|
// Additional method implementations...
|
|
}
|
|
```
|
|
|
|
#### 3. Create fallback storage service for graceful degradation
|
|
```csharp
|
|
public class FallbackFileStorageService : IFileStorageService
|
|
{
|
|
private readonly IFileStorageService _primaryService;
|
|
private readonly IFileStorageService _fallbackService;
|
|
private readonly ILogger<FallbackFileStorageService> _logger;
|
|
|
|
public FallbackFileStorageService(
|
|
IFileStorageService primaryService,
|
|
IFileStorageService fallbackService,
|
|
ILogger<FallbackFileStorageService> logger)
|
|
{
|
|
_primaryService = primaryService;
|
|
_fallbackService = fallbackService;
|
|
_logger = logger;
|
|
}
|
|
|
|
public async Task<string> UploadFileAsync(Stream fileStream, string fileName, string contentType, CancellationToken cancellationToken = default)
|
|
{
|
|
try
|
|
{
|
|
return await _primaryService.UploadFileAsync(fileStream, fileName, contentType, cancellationToken);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.LogWarning(ex, "Primary storage failed, falling back to secondary storage");
|
|
fileStream.Position = 0; // Reset stream position
|
|
return await _fallbackService.UploadFileAsync(fileStream, fileName, contentType, cancellationToken);
|
|
}
|
|
}
|
|
|
|
// Implementation with automatic fallback logic for other methods...
|
|
}
|
|
```
|
|
|
|
#### 4. Update all file operations to use the abstraction layer
|
|
- Replace direct File.WriteAllBytes, File.ReadAllBytes calls
|
|
- Update all controllers to use IFileStorageService
|
|
- Modify attachment handling in vehicle records
|
|
|
|
#### 5. Implement file migration utility for existing local files
|
|
```csharp
|
|
public class FileMigrationService
|
|
{
|
|
private readonly IFileStorageService _targetStorage;
|
|
private readonly ILogger<FileMigrationService> _logger;
|
|
|
|
public async Task<MigrationResult> MigrateLocalFilesAsync(string localPath)
|
|
{
|
|
var result = new MigrationResult();
|
|
var files = Directory.GetFiles(localPath, "*", SearchOption.AllDirectories);
|
|
|
|
foreach (var filePath in files)
|
|
{
|
|
try
|
|
{
|
|
using var fileStream = File.OpenRead(filePath);
|
|
var fileName = Path.GetFileName(filePath);
|
|
var contentType = GetContentType(fileName);
|
|
|
|
var fileId = await _targetStorage.UploadFileAsync(fileStream, fileName, contentType);
|
|
result.ProcessedFiles.Add(new MigratedFile
|
|
{
|
|
OriginalPath = filePath,
|
|
NewFileId = fileId,
|
|
Success = true
|
|
});
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.LogError(ex, "Failed to migrate file: {FilePath}", filePath);
|
|
result.ProcessedFiles.Add(new MigratedFile
|
|
{
|
|
OriginalPath = filePath,
|
|
Success = false,
|
|
Error = ex.Message
|
|
});
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
}
|
|
```
|
|
|
|
## 2.3 PostgreSQL High Availability Configuration
|
|
|
|
**Objective**: Set up a PostgreSQL cluster with automatic failover and read replicas.
|
|
|
|
**Architecture Overview**:
|
|
PostgreSQL will be deployed using an operator (like CloudNativePG or Postgres Operator) to provide automated failover, backup, and scaling capabilities.
|
|
|
|
### PostgreSQL Cluster Configuration
|
|
|
|
```yaml
|
|
apiVersion: postgresql.cnpg.io/v1
|
|
kind: Cluster
|
|
metadata:
|
|
name: motovault-postgres
|
|
namespace: motovault
|
|
spec:
|
|
instances: 3
|
|
primaryUpdateStrategy: unsupervised
|
|
|
|
postgresql:
|
|
parameters:
|
|
max_connections: "200"
|
|
shared_buffers: "256MB"
|
|
effective_cache_size: "1GB"
|
|
maintenance_work_mem: "64MB"
|
|
checkpoint_completion_target: "0.9"
|
|
wal_buffers: "16MB"
|
|
default_statistics_target: "100"
|
|
random_page_cost: "1.1"
|
|
effective_io_concurrency: "200"
|
|
|
|
resources:
|
|
requests:
|
|
memory: "2Gi"
|
|
cpu: "1000m"
|
|
limits:
|
|
memory: "4Gi"
|
|
cpu: "2000m"
|
|
|
|
storage:
|
|
size: "100Gi"
|
|
storageClass: "fast-ssd"
|
|
|
|
monitoring:
|
|
enabled: true
|
|
|
|
backup:
|
|
retentionPolicy: "30d"
|
|
barmanObjectStore:
|
|
destinationPath: "s3://motovault-backups/postgres"
|
|
s3Credentials:
|
|
accessKeyId:
|
|
name: postgres-backup-credentials
|
|
key: ACCESS_KEY_ID
|
|
secretAccessKey:
|
|
name: postgres-backup-credentials
|
|
key: SECRET_ACCESS_KEY
|
|
wal:
|
|
retention: "5d"
|
|
data:
|
|
retention: "30d"
|
|
jobs: 1
|
|
```
|
|
|
|
### Implementation Tasks
|
|
|
|
#### 1. Deploy PostgreSQL operator (CloudNativePG recommended)
|
|
```bash
|
|
kubectl apply -f https://raw.githubusercontent.com/cloudnative-pg/cloudnative-pg/release-1.20/releases/cnpg-1.20.1.yaml
|
|
```
|
|
|
|
#### 2. Configure cluster with primary/replica setup
|
|
- 3-node cluster with automatic failover
|
|
- Read-write split capability
|
|
- Streaming replication configuration
|
|
|
|
#### 3. Set up automated backups to MinIO or external storage
|
|
```yaml
|
|
apiVersion: postgresql.cnpg.io/v1
|
|
kind: ScheduledBackup
|
|
metadata:
|
|
name: motovault-postgres-backup
|
|
spec:
|
|
schedule: "0 2 * * *" # Daily at 2 AM
|
|
backupOwnerReference: self
|
|
cluster:
|
|
name: motovault-postgres
|
|
```
|
|
|
|
#### 4. Implement connection pooling with PgBouncer
|
|
```yaml
|
|
apiVersion: apps/v1
|
|
kind: Deployment
|
|
metadata:
|
|
name: pgbouncer
|
|
spec:
|
|
replicas: 2
|
|
selector:
|
|
matchLabels:
|
|
app: pgbouncer
|
|
template:
|
|
spec:
|
|
containers:
|
|
- name: pgbouncer
|
|
image: pgbouncer/pgbouncer:latest
|
|
env:
|
|
- name: DATABASES_HOST
|
|
value: motovault-postgres-rw
|
|
- name: DATABASES_PORT
|
|
value: "5432"
|
|
- name: DATABASES_DATABASE
|
|
value: motovault
|
|
- name: POOL_MODE
|
|
value: session
|
|
- name: MAX_CLIENT_CONN
|
|
value: "1000"
|
|
- name: DEFAULT_POOL_SIZE
|
|
value: "25"
|
|
```
|
|
|
|
#### 5. Configure monitoring and alerting for database health
|
|
```yaml
|
|
apiVersion: monitoring.coreos.com/v1
|
|
kind: ServiceMonitor
|
|
metadata:
|
|
name: postgres-metrics
|
|
spec:
|
|
selector:
|
|
matchLabels:
|
|
app.kubernetes.io/name: cloudnative-pg
|
|
endpoints:
|
|
- port: metrics
|
|
path: /metrics
|
|
```
|
|
|
|
## 2.4 Redis Cluster for Session Management
|
|
|
|
**Objective**: Implement distributed session storage and caching using Redis cluster.
|
|
|
|
**Current State**:
|
|
- In-memory session storage tied to individual application instances
|
|
- No distributed caching for expensive operations
|
|
- Configuration and translation data loaded on each application start
|
|
|
|
**Target State**:
|
|
- Redis cluster for distributed session storage
|
|
- Centralized caching for frequently accessed data
|
|
- High availability with automatic failover
|
|
|
|
### Redis Cluster Configuration
|
|
|
|
```yaml
|
|
apiVersion: v1
|
|
kind: ConfigMap
|
|
metadata:
|
|
name: redis-cluster-config
|
|
namespace: motovault
|
|
data:
|
|
redis.conf: |
|
|
cluster-enabled yes
|
|
cluster-require-full-coverage no
|
|
cluster-node-timeout 15000
|
|
cluster-config-file /data/nodes.conf
|
|
cluster-migration-barrier 1
|
|
appendonly yes
|
|
appendfsync everysec
|
|
save 900 1
|
|
save 300 10
|
|
save 60 10000
|
|
|
|
---
|
|
apiVersion: apps/v1
|
|
kind: StatefulSet
|
|
metadata:
|
|
name: redis-cluster
|
|
namespace: motovault
|
|
spec:
|
|
serviceName: redis-cluster
|
|
replicas: 6
|
|
selector:
|
|
matchLabels:
|
|
app: redis-cluster
|
|
template:
|
|
metadata:
|
|
labels:
|
|
app: redis-cluster
|
|
spec:
|
|
containers:
|
|
- name: redis
|
|
image: redis:7-alpine
|
|
command:
|
|
- redis-server
|
|
- /etc/redis/redis.conf
|
|
ports:
|
|
- containerPort: 6379
|
|
- containerPort: 16379
|
|
resources:
|
|
requests:
|
|
memory: "512Mi"
|
|
cpu: "250m"
|
|
limits:
|
|
memory: "1Gi"
|
|
cpu: "500m"
|
|
volumeMounts:
|
|
- name: redis-config
|
|
mountPath: /etc/redis
|
|
- name: redis-data
|
|
mountPath: /data
|
|
volumes:
|
|
- name: redis-config
|
|
configMap:
|
|
name: redis-cluster-config
|
|
volumeClaimTemplates:
|
|
- metadata:
|
|
name: redis-data
|
|
spec:
|
|
accessModes: ["ReadWriteOnce"]
|
|
resources:
|
|
requests:
|
|
storage: 10Gi
|
|
```
|
|
|
|
### Implementation Tasks
|
|
|
|
#### 1. Deploy Redis cluster with 6 nodes (3 masters, 3 replicas)
|
|
```bash
|
|
# Initialize Redis cluster after deployment
|
|
kubectl exec -it redis-cluster-0 -- redis-cli --cluster create \
|
|
redis-cluster-0.redis-cluster:6379 \
|
|
redis-cluster-1.redis-cluster:6379 \
|
|
redis-cluster-2.redis-cluster:6379 \
|
|
redis-cluster-3.redis-cluster:6379 \
|
|
redis-cluster-4.redis-cluster:6379 \
|
|
redis-cluster-5.redis-cluster:6379 \
|
|
--cluster-replicas 1
|
|
```
|
|
|
|
#### 2. Configure session storage
|
|
```csharp
|
|
services.AddStackExchangeRedisCache(options =>
|
|
{
|
|
options.Configuration = configuration.GetConnectionString("Redis");
|
|
options.InstanceName = "MotoVault";
|
|
});
|
|
|
|
services.AddSession(options =>
|
|
{
|
|
options.IdleTimeout = TimeSpan.FromMinutes(30);
|
|
options.Cookie.HttpOnly = true;
|
|
options.Cookie.IsEssential = true;
|
|
options.Cookie.SecurePolicy = CookieSecurePolicy.Always;
|
|
});
|
|
```
|
|
|
|
#### 3. Implement distributed caching
|
|
```csharp
|
|
public class CachedTranslationService : ITranslationService
|
|
{
|
|
private readonly IDistributedCache _cache;
|
|
private readonly ITranslationService _translationService;
|
|
private readonly ILogger<CachedTranslationService> _logger;
|
|
|
|
public async Task<string> GetTranslationAsync(string key, string language)
|
|
{
|
|
var cacheKey = $"translation:{language}:{key}";
|
|
var cached = await _cache.GetStringAsync(cacheKey);
|
|
|
|
if (cached != null)
|
|
{
|
|
return cached;
|
|
}
|
|
|
|
var translation = await _translationService.GetTranslationAsync(key, language);
|
|
|
|
await _cache.SetStringAsync(cacheKey, translation, new DistributedCacheEntryOptions
|
|
{
|
|
SlidingExpiration = TimeSpan.FromHours(1)
|
|
});
|
|
|
|
return translation;
|
|
}
|
|
}
|
|
```
|
|
|
|
#### 4. Add cache monitoring and performance metrics
|
|
```csharp
|
|
public class CacheMetricsService
|
|
{
|
|
private readonly Counter _cacheHits;
|
|
private readonly Counter _cacheMisses;
|
|
private readonly Histogram _cacheOperationDuration;
|
|
|
|
public CacheMetricsService()
|
|
{
|
|
_cacheHits = Metrics.CreateCounter(
|
|
"motovault_cache_hits_total",
|
|
"Total cache hits",
|
|
new[] { "cache_type" });
|
|
|
|
_cacheMisses = Metrics.CreateCounter(
|
|
"motovault_cache_misses_total",
|
|
"Total cache misses",
|
|
new[] { "cache_type" });
|
|
|
|
_cacheOperationDuration = Metrics.CreateHistogram(
|
|
"motovault_cache_operation_duration_seconds",
|
|
"Cache operation duration",
|
|
new[] { "operation", "cache_type" });
|
|
}
|
|
}
|
|
```
|
|
|
|
## Week-by-Week Breakdown
|
|
|
|
### Week 5: MinIO Deployment
|
|
- **Days 1-2**: Deploy MinIO operator and configure basic cluster
|
|
- **Days 3-4**: Implement file storage abstraction interface
|
|
- **Days 5-7**: Create MinIO storage service implementation
|
|
|
|
### Week 6: File Migration and PostgreSQL HA
|
|
- **Days 1-2**: Complete file storage abstraction and migration tools
|
|
- **Days 3-4**: Deploy PostgreSQL operator and HA cluster
|
|
- **Days 5-7**: Configure connection pooling and backup strategies
|
|
|
|
### Week 7: Redis Cluster and Caching
|
|
- **Days 1-3**: Deploy Redis cluster and configure session storage
|
|
- **Days 4-5**: Implement distributed caching layer
|
|
- **Days 6-7**: Add cache monitoring and performance metrics
|
|
|
|
### Week 8: Integration and Testing
|
|
- **Days 1-3**: End-to-end testing of all HA components
|
|
- **Days 4-5**: Performance testing and optimization
|
|
- **Days 6-7**: Documentation and preparation for Phase 3
|
|
|
|
## Success Criteria
|
|
|
|
- [ ] MinIO cluster operational with erasure coding
|
|
- [ ] File storage abstraction implemented and tested
|
|
- [ ] PostgreSQL HA cluster with automatic failover
|
|
- [ ] Redis cluster providing distributed sessions
|
|
- [ ] All file operations migrated to object storage
|
|
- [ ] Comprehensive monitoring for all infrastructure components
|
|
- [ ] Backup and recovery procedures validated
|
|
|
|
## Testing Requirements
|
|
|
|
### Infrastructure Tests
|
|
- MinIO cluster failover scenarios
|
|
- PostgreSQL primary/replica failover
|
|
- Redis cluster node failure recovery
|
|
- Network partition handling
|
|
|
|
### Application Integration Tests
|
|
- File upload/download through abstraction layer
|
|
- Session persistence across application restarts
|
|
- Cache performance and invalidation
|
|
- Database connection pool behavior
|
|
|
|
### Performance Tests
|
|
- File storage throughput and latency
|
|
- Database query performance with connection pooling
|
|
- Cache hit/miss ratios and response times
|
|
|
|
## Deliverables
|
|
|
|
1. **Infrastructure Components**
|
|
- MinIO HA cluster configuration
|
|
- PostgreSQL HA cluster with operator
|
|
- Redis cluster deployment
|
|
- Monitoring and alerting setup
|
|
|
|
2. **Application Updates**
|
|
- File storage abstraction implementation
|
|
- Session management configuration
|
|
- Distributed caching integration
|
|
- Connection pooling optimization
|
|
|
|
3. **Migration Tools**
|
|
- File migration utility
|
|
- Database migration scripts
|
|
- Configuration migration helpers
|
|
|
|
4. **Documentation**
|
|
- Infrastructure architecture diagrams
|
|
- Operational procedures
|
|
- Monitoring and alerting guides
|
|
|
|
## Dependencies
|
|
|
|
- Kubernetes cluster with sufficient resources
|
|
- Storage classes for persistent volumes
|
|
- Prometheus and Grafana for monitoring
|
|
- Network connectivity between components
|
|
|
|
## Risks and Mitigations
|
|
|
|
### Risk: Data Corruption During File Migration
|
|
**Mitigation**: Checksum validation and parallel running of old/new systems
|
|
|
|
### Risk: Database Failover Issues
|
|
**Mitigation**: Extensive testing of failover scenarios and automated recovery
|
|
|
|
### Risk: Cache Inconsistency
|
|
**Mitigation**: Proper cache invalidation strategies and monitoring
|
|
|
|
---
|
|
|
|
**Previous Phase**: [Phase 1: Core Kubernetes Readiness](K8S-PHASE-1.md)
|
|
**Next Phase**: [Phase 3: Production Deployment](K8S-PHASE-3.md) |