// 初始版本架构特点
type MySQLOperatorV1 struct {Manager          manager.ManagerReconciler       MySQLClusterReconcilerMetricsExporter  basicMetrics.ExporterEventRecorder    record.EventRecorder
}

graph TDA[Operator Core] --> B[Replication Manager]A --> C[Backup Controller]A --> D[Failover Coordinator]A --> E[Config Syncer]B --> F[Primary Election]B --> G[Replica Health Check]C --> H[Cloud Storage Plugins]D --> I[Failure Detection]D --> J[Topology Reconfiguration]

# 多集群管理CRD示例
apiVersion: mysql.orchestrator/v1alpha1
kind: MySQLFederation
metadata:name: global-db-cluster
spec:clusters:- region: us-west-1replicas: 3 topology: multi-azstorage: class: gp2size: 1Ti- region: eu-central-1replicas: 2topology: single-azstorage:class: io1iops: 10000syncPolicy:tables:- "*.users"- "orders.*"conflictResolution: "timestamp_wins"

// 集群状态机实现
type ClusterStateMachine struct {CurrentState ClusterStateStates       map[ClusterState]StateHandler
}type StateHandler interface {Handle(context.Context, *mysqlv1.MySQLCluster) (ClusterState, error)
}func (sm *ClusterStateMachine) Transition(ctx context.Context, cluster *mysqlv1.MySQLCluster) error {handler, exists := sm.States[sm.CurrentState]if !exists {return fmt.Errorf("no handler for state %v", sm.CurrentState)}nextState, err := handler.Handle(ctx, cluster)if err != nil {return err}sm.CurrentState = nextStatereturn nil
}// 示例状态处理
type InitializingState struct{}func (s *InitializingState) Handle(ctx context.Context, cluster *mysqlv1.MySQLCluster) (ClusterState, error) {if err := initializePrimary(ctx, cluster); err != nil {return ClusterFailed, err}return ClusterRunning, nil
}

// 调和阶段定义
const (PhaseInfrastructure = "Infrastructure"PhaseReplication    = "Replication"PhaseBackup         = "Backup"PhaseMonitoring     = "Monitoring"
)func (r *MySQLClusterReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {cluster := &mysqlv1.MySQLCluster{}if err := r.Get(ctx, req.NamespacedName, cluster); err != nil {return ctrl.Result{}, err}// 阶段式调和phases := []struct {name    stringhandler func(context.Context, *mysqlv1.MySQLCluster) error}{{PhaseInfrastructure, r.reconcileInfrastructure},{PhaseReplication, r.reconcileReplication},{PhaseBackup, r.reconcileBackup},{PhaseMonitoring, r.reconcileMonitoring},}for _, phase := range phases {if err := phase.handler(ctx, cluster); err != nil {r.recordPhaseFailure(cluster, phase.name, err)return ctrl.Result{}, err}r.recordPhaseSuccess(cluster, phase.name)}return ctrl.Result{}, nil
}

// 资源更新冲突处理
func (r *MySQLClusterReconciler) updateClusterStatus(ctx context.Context, cluster *mysqlv1.MySQLCluster, phase string) error {latest := &mysqlv1.MySQLCluster{}if err := r.Get(ctx, types.NamespacedName{Name:      cluster.Name,Namespace: cluster.Namespace,}, latest); err != nil {return err}// 检查资源版本if latest.ResourceVersion != cluster.ResourceVersion {return fmt.Errorf("conflict detected, retrying")}latest.Status.Phase = phasereturn r.Status().Update(ctx, latest)
}

# 性能调优配置示例
apiVersion: mysql.operator/v1alpha1
kind: MySQLCluster
metadata:name: large-scale-cluster
spec:replicas: 15tuning:controller:reconcileConcurrency: 10cacheSyncTimeout: 5mmysql:groupReplication:flowControlMode: "DISABLED"  # 大规模集群建议禁用memberWeight: 50innodb:bufferPoolSize: "24Gi"logFileSize: "4Gi"ioCapacity: 20000parallelReadThreads: 16parallelWriteThreads: 16connectionManagement:threadCacheSize: 100maxConnections: 2000

// 批量事件处理器
type EventBatcher struct {bufferSize    intflushInterval time.DurationeventCh       chan controller.Eventprocessor     EventProcessor
}func (b *EventBatcher) Run(stopCh <-chan struct{}) {batch := make([]controller.Event, 0, b.bufferSize)timer := time.NewTimer(b.flushInterval)for {select {case event := <-b.eventCh:batch = append(batch, event)if len(batch) >= b.bufferSize {b.processor.Process(batch)batch = batch[:0]timer.Reset(b.flushInterval)}case <-timer.C:if len(batch) > 0 {b.processor.Process(batch)batch = batch[:0]}timer.Reset(b.flushInterval)case <-stopCh:if len(batch) > 0 {b.processor.Process(batch)}return}}
}// 在控制器中集成
func (r *MySQLClusterReconciler) SetupWithManager(mgr ctrl.Manager) error {batcher := NewEventBatcher(100, 1*time.Second, mgr.GetEventRecorder())go batcher.Run(context.Background().Done())return ctrl.NewControllerManagedBy(mgr).For(&mysqlv1.MySQLCluster{}).WithEventFilter(predicate.GenerationChangedPredicate{}).Complete(r)
}

# 安全配置全景
apiVersion: mysql.operator/v1alpha1
kind: MySQLCluster
metadata:name: secure-cluster
spec:security:# 传输层加密tls:mode: "REQUIRED"certManager:issuerRef:name: vault-issuerkind: ClusterIssuer# 认证与授权authentication:adminUser:secretRef: mysql-root-secretreplicationUser:secretRef: mysql-repl-secretmonitorUser:secretRef: mysql-monitor-secret# 数据加密encryption:atRest:enabled: truekeyManagement:vault:server: "https://vault.example.com"path: "mysql/keys"role: "mysql-operator"inTransit: enabled: true# 网络隔离networkPolicy:ingress:- from:- podSelector:matchLabels:app: frontendports:- protocol: TCPport: 3306egress:- to:- podSelector:matchLabels:app: backup-serviceports:- protocol: TCPport: 443

// Pod安全上下文配置
func buildSecurityContext(cluster *mysqlv1.MySQLCluster) *corev1.PodSecurityContext {return &corev1.PodSecurityContext{RunAsNonRoot:             pointer.Bool(true),RunAsUser:                pointer.Int64(999), // mysql用户FSGroup:                  pointer.Int64(999),SupplementalGroups:       []int64{1001}, // 备份组IDSeccompProfile:           &corev1.SeccompProfile{Type: "RuntimeDefault"},ReadOnlyRootFilesystem:   pointer.Bool(true),AllowPrivilegeEscalation: pointer.Bool(false),Capabilities: &corev1.Capabilities{Drop: []corev1.Capability{"ALL"},},}
}// 容器安全配置
func buildContainerSecurity() *corev1.SecurityContext {return &corev1.SecurityContext{Privileged:               pointer.Bool(false),ReadOnlyRootFilesystem:   pointer.Bool(true),RunAsNonRoot:            pointer.Bool(true),RunAsUser:               pointer.Int64(999),SeccompProfile:          &corev1.SeccompProfile{Type: "RuntimeDefault"},AllowPrivilegeEscalation: pointer.Bool(false),Capabilities: &corev1.Capabilities{Drop: []corev1.Capability{"ALL"},},}
}

# 混合云部署配置
apiVersion: mysql.orchestrator/v1alpha1
kind: MySQLHybridDeployment
metadata:name: global-database
spec:onPremises:clusterRef: name: on-prem-clusternamespace: mysql-prodreplicas: 3cloudProviders:- name: awsregion: us-west-2replicas: 2nodePools:- instanceType: db.r5.2xlargecount: 1- instanceType: db.r5.xlargecount: 1storage:size: 1Tiiops: 10000- name: gcpregion: asia-east1replicas: 1tier: db-custom-8-32768topology:replicationMode: "SEMI_SYNC"conflictResolution: "LAST_WRITE_WINS"syncBinlog: true

# Istio流量管理配置
apiVersion: networking.istio.io/v1alpha3
kind: DestinationRule
metadata:name: mysql-traffic-policy
spec:host: mysql-cluster.default.svc.cluster.localtrafficPolicy:tls:mode: ISTIO_MUTUALloadBalancer:simple: LEAST_CONNoutlierDetection:consecutive5xxErrors: 5interval: 30sbaseEjectionTime: 1mconnectionPool:tcp: maxConnections: 1000connectTimeout: 30mshttp:http2MaxRequests: 1000maxRequestsPerConnection: 10
---
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:name: mysql-read-write-split
spec:hosts:- mysql-cluster.default.svc.cluster.localhttp:- match:- uri:prefix: /writeroute:- destination:host: mysql-cluster-primary.default.svc.cluster.localport:number: 3306- match:- uri:prefix: /readroute:- destination:host: mysql-cluster-replicas.default.svc.cluster.localport:number: 3306

// AIOps集成架构
type MySQLAIOpsController struct {Predictor   *ml.PredictiveModelRecommender *ml.RecommendationEngineExecutor    *action.Executor
}func (c *MySQLAIOpsController) Run() {for {// 收集性能指标metrics := c.collectClusterMetrics()// 预测未来负载forecast := c.Predictor.Predict(metrics)// 生成优化建议recommendations := c.Recommender.Analyze(forecast)// 执行优化动作c.Executor.Execute(recommendations)time.Sleep(5 * time.Minute)}
}// 示例智能场景
func autoScaleCluster(cluster *mysqlv1.MySQLCluster) {if forecast.Load > threshold {// 自动扩容newReplicas := calculateOptimalReplicas(forecast)updateClusterReplicas(cluster, newReplicas)// 动态调整参数adjustBufferPool(newReplicas)adjustThreadPool(newReplicas)}
}

# 边缘集群配置示例
apiVersion: mysql.edge/v1alpha1
kind: EdgeMySQLCluster
metadata:name: edge-database
spec:centralCluster:name: global-mysql-hubsyncInterval: 5medgeNodes:- location: factory-floor-1latencyRequirement: 50msstorage: size: 100GiretentionPolicy: "7d"syncTables:- "production.sensor_data"- "inventory.*"- location: retail-store-45latencyRequirement: 100ms  storage:size: 50GiretentionPolicy: "1d"syncTables:- "sales.transactions"- "inventory.current_stock"conflictResolution: "LOCAL_WINS"