Add database backup functionality with GCS integration (#297)

<!-- Provide a brief summary of your changes -->
Implements automated database backup functionality with Google Cloud
Storage integration, including retention policies and MinIO support for
local development.

## Motivation and Context
<!-- Why is this change needed? What problem does it solve? -->
This change adds critical database backup capabilities to ensure data
durability and disaster recovery. The solution provides automated
backups with configurable retention policies and supports both
production (GCS) and development (MinIO) environments.

## How Has This Been Tested?
<!-- Have you tested this in a real application? Which scenarios were
tested? -->
- Tested backup creation and restoration with MinIO in local development
- Verified GCS bucket lifecycle policies for automatic deletion after 60
days
- Tested backup retention and cleanup logic

## Breaking Changes
<!-- Will users need to update their code or configurations? -->
No breaking changes. This is an additive feature that doesn't affect
existing functionality.

## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [x] Documentation update

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed

## Additional context
<!-- Add any other context, implementation notes, or design decisions
-->
- Implements 60-day retention period for backups as a safety net
- Uses GCS lifecycle rules for automatic cleanup
- Includes MinIO setup instructions for local development testing
- Port-forwarding commands updated for consistency across documentation
- Fixes #184

deploy/pkg/providers/aks/provider.go

@@ -1,99 +0,0 @@
-package aks
-
-import (
-	"encoding/base64"
-	"fmt"
-
-	"github.com/pulumi/pulumi-azure-native-sdk/containerservice"
-	"github.com/pulumi/pulumi-azure-native-sdk/resources"
-	"github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes"
-	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
-	"github.com/pulumi/pulumi/sdk/v3/go/pulumi/config"
-
-	"github.com/modelcontextprotocol/registry/deploy/infra/pkg/providers"
-)
-
-// Provider implements the ClusterProvider interface for Azure Kubernetes Service
-type Provider struct{}
-
-// CreateCluster creates an Azure Kubernetes Service cluster
-func (p *Provider) CreateCluster(ctx *pulumi.Context, environment string) (*providers.ProviderInfo, error) {
-	// Get resource group name from config or use default
-	conf := config.New(ctx, "mcp-registry")
-	resourceGroupName := conf.Get("resourceGroupName")
-	if resourceGroupName == "" {
-		resourceGroupName = "official-mcp-registry-prod"
-	}
-
-	// Get existing resource group
-	resourceGroup, err := resources.LookupResourceGroup(ctx, &resources.LookupResourceGroupArgs{
-		ResourceGroupName: resourceGroupName,
-	})
-	if err != nil {
-		return nil, fmt.Errorf("failed to find resource group '%s': %w", resourceGroupName, err)
-	}
-
-	// Create AKS cluster
-	clusterName := fmt.Sprintf("mcp-registry-%s", environment)
-
-	cluster, err := containerservice.NewManagedCluster(ctx, clusterName, &containerservice.ManagedClusterArgs{
-		ResourceGroupName: pulumi.String(resourceGroup.Name),
-		Location:          pulumi.String(resourceGroup.Location),
-		DnsPrefix:         pulumi.String(clusterName),
-		KubernetesVersion: pulumi.String("1.33.2"),
-		Identity: &containerservice.ManagedClusterIdentityArgs{
-			Type: containerservice.ResourceIdentityTypeSystemAssigned,
-		},
-		AgentPoolProfiles: containerservice.ManagedClusterAgentPoolProfileArray{
-			&containerservice.ManagedClusterAgentPoolProfileArgs{
-				Name:   pulumi.String("nodepool1"),
-				Count:  pulumi.Int(2),
-				VmSize: pulumi.String("Standard_B2s"),
-				OsType: pulumi.String("Linux"),
-				Mode:   pulumi.String("System"),
-			},
-		},
-		NetworkProfile: &containerservice.ContainerServiceNetworkProfileArgs{
-			NetworkPlugin: pulumi.String("azure"),
-			ServiceCidr:   pulumi.String("10.0.0.0/16"),
-			DnsServiceIP:  pulumi.String("10.0.0.10"),
-		},
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	// Get AKS credentials
-	creds := pulumi.All(cluster.Name, pulumi.String(resourceGroup.Name)).ApplyT(
-		func(args []any) (string, error) {
-			clusterName := args[0].(string)
-			rgName := args[1].(string)
-			credentials, err := containerservice.ListManagedClusterUserCredentials(ctx, &containerservice.ListManagedClusterUserCredentialsArgs{
-				ResourceGroupName: rgName,
-				ResourceName:      clusterName,
-			})
-			if err != nil {
-				return "", err
-			}
-			// Decode base64 kubeconfig
-			kubeconfigData, err := base64.StdEncoding.DecodeString(credentials.Kubeconfigs[0].Value)
-			if err != nil {
-				return "", fmt.Errorf("failed to decode kubeconfig: %w", err)
-			}
-			return string(kubeconfigData), nil
-		},
-	).(pulumi.StringOutput)
-
-	// Create Kubernetes provider for AKS
-	k8sProvider, err := kubernetes.NewProvider(ctx, "k8s-provider", &kubernetes.ProviderArgs{
-		Kubeconfig: creds,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	return &providers.ProviderInfo{
-		Name:     cluster.Name,
-		Provider: k8sProvider,
-	}, nil
-}

deploy/pkg/providers/gcp/provider.go

@@ -6,7 +6,10 @@ import (
 
 	"github.com/pulumi/pulumi-gcp/sdk/v8/go/gcp"
 	"github.com/pulumi/pulumi-gcp/sdk/v8/go/gcp/container"
+	"github.com/pulumi/pulumi-gcp/sdk/v8/go/gcp/storage"
 	"github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes"
+	corev1 "github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes/core/v1"
+	metav1 "github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes/meta/v1"
 	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
 	"github.com/pulumi/pulumi/sdk/v3/go/pulumi/config"
 
@@ -16,12 +19,51 @@ import (
 // Provider implements the ClusterProvider interface for Google Kubernetes Engine
 type Provider struct{}
 
+// createGCPProvider creates a GCP provider with explicit credentials if configured
+func createGCPProvider(ctx *pulumi.Context, name string) (*gcp.Provider, error) {
+	gcpConf := config.New(ctx, "gcp")
+	
+	// Get project ID from config
+	projectID := gcpConf.Get("project")
+	if projectID == "" {
+		return nil, fmt.Errorf("GCP project ID not configured. Set gcp:project")
+	}
+	
+	// Get region from config or use default
+	region := gcpConf.Get("region")
+	if region == "" {
+		region = "us-central1"
+	}
+	
+	// Get credentials from config (base64 encoded service account JSON)
+	credentials := gcpConf.Get("credentials")
+	if credentials != "" {
+		// Decode the base64 credentials
+		decodedCreds, err := base64.StdEncoding.DecodeString(credentials)
+		if err != nil {
+			return nil, fmt.Errorf("failed to decode GCP credentials: %w", err)
+		}
+		credentials = string(decodedCreds)
+	}
+	
+	// Create a GCP provider with explicit credentials if provided
+	if credentials != "" {
+		return gcp.NewProvider(ctx, name, &gcp.ProviderArgs{
+			Project:     pulumi.String(projectID),
+			Region:      pulumi.String(region),
+			Credentials: pulumi.String(credentials),
+		})
+	}
+	
+	return nil, nil
+}
+
 // CreateCluster creates a Google Kubernetes Engine cluster
 func (p *Provider) CreateCluster(ctx *pulumi.Context, environment string) (*providers.ProviderInfo, error) {
 	// Get configuration
 	gcpConf := config.New(ctx, "gcp")
 
-	// Get project ID from config or use default
+	// Get project ID from config
 	projectID := gcpConf.Get("project")
 	if projectID == "" {
 		return nil, fmt.Errorf("GCP project ID not configured. Set gcp:project")
@@ -33,29 +75,10 @@ func (p *Provider) CreateCluster(ctx *pulumi.Context, environment string) (*prov
 		region = "us-central1"
 	}
 
-	// Get credentials from config (base64 encoded service account JSON)
-	credentials := gcpConf.Get("credentials")
-	if credentials != "" {
-		// Decode the base64 credentials
-		decodedCreds, err := base64.StdEncoding.DecodeString(credentials)
-		if err != nil {
-			return nil, fmt.Errorf("failed to decode GCP credentials: %w", err)
-		}
-		credentials = string(decodedCreds)
-	}
-
-	// Create a GCP provider with explicit credentials if provided
-	var gcpProvider *gcp.Provider
-	var err error
-	if credentials != "" {
-		gcpProvider, err = gcp.NewProvider(ctx, "gcp-explicit", &gcp.ProviderArgs{
-			Project:     pulumi.String(projectID),
-			Region:      pulumi.String(region),
-			Credentials: pulumi.String(credentials),
-		})
-		if err != nil {
-			return nil, fmt.Errorf("failed to create GCP provider: %w", err)
-		}
+	// Create GCP provider with explicit credentials if configured
+	gcpProvider, err := createGCPProvider(ctx, "gcp-explicit")
+	if err != nil {
+		return nil, err
 	}
 
 	// Create GKE cluster
@@ -180,3 +203,102 @@ users:
 		Provider: k8sProvider,
 	}, nil
 }
+
+// CreateBackupStorage creates GCS bucket with HMAC credentials for S3-compatible access
+func (p *Provider) CreateBackupStorage(ctx *pulumi.Context, cluster *providers.ProviderInfo, environment string) (*providers.BackupStorageInfo, error) {
+	gcpConf := config.New(ctx, "gcp")
+	projectID := gcpConf.Get("project")
+	if projectID == "" {
+		return nil, fmt.Errorf("GCP project ID not configured. Set gcp:project")
+	}
+
+	// Create GCP provider with explicit credentials if configured
+	gcpProvider, err := createGCPProvider(ctx, "gcp-explicit-backup")
+	if err != nil {
+		return nil, err
+	}
+
+	// Set resource options with provider if we have explicit credentials
+	resourceOpts := []pulumi.ResourceOption{}
+	if gcpProvider != nil {
+		resourceOpts = append(resourceOpts, pulumi.Provider(gcpProvider))
+	}
+
+	// Create GCS bucket for backups
+	bucketName := fmt.Sprintf("mcp-registry-%s-backups", environment)
+	bucket, err := storage.NewBucket(ctx, "backup-bucket", &storage.BucketArgs{
+		Name:         pulumi.String(bucketName),
+		Location:     pulumi.String("US"),
+		StorageClass: pulumi.String("STANDARD"),
+		LifecycleRules: storage.BucketLifecycleRuleArray{
+			&storage.BucketLifecycleRuleArgs{
+				Action: &storage.BucketLifecycleRuleActionArgs{
+					Type: pulumi.String("Delete"),
+				},
+				Condition: &storage.BucketLifecycleRuleConditionArgs{
+					Age: pulumi.Int(60), // Keep backups for 60 days (K8up manages pruning at 28 days, GCS deletion is a safety net)
+				},
+			},
+		},
+		UniformBucketLevelAccess: pulumi.Bool(true),
+		Versioning: &storage.BucketVersioningArgs{
+			Enabled: pulumi.Bool(true),
+		},
+		Labels: pulumi.StringMap{
+			"environment": pulumi.String(environment),
+			"purpose":     pulumi.String("k8up-backups"),
+		},
+	}, resourceOpts...)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create backup bucket: %w", err)
+	}
+
+	// Use the existing Pulumi service account instead of creating a new one
+	// The service account email is pulumi-svc@<project>.iam.gserviceaccount.com
+	serviceAccountEmail := fmt.Sprintf("pulumi-svc@%s.iam.gserviceaccount.com", projectID)
+
+	// Grant the service account access to the bucket
+	_, err = storage.NewBucketIAMMember(ctx, "backup-bucket-iam", &storage.BucketIAMMemberArgs{
+		Bucket: bucket.Name,
+		Role:   pulumi.String("roles/storage.objectAdmin"),
+		Member: pulumi.Sprintf("serviceAccount:%s", pulumi.String(serviceAccountEmail)),
+	}, resourceOpts...)
+	if err != nil {
+		return nil, fmt.Errorf("failed to grant bucket access: %w", err)
+	}
+
+	// Create HMAC key for S3-compatible access
+	hmacKey, err := storage.NewHmacKey(ctx, "backup-hmac-key", &storage.HmacKeyArgs{
+		ServiceAccountEmail: pulumi.String(serviceAccountEmail),
+		Project:             pulumi.String(projectID),
+	}, resourceOpts...)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create HMAC key: %w", err)
+	}
+
+	// Create Kubernetes secret with S3-compatible credentials
+	backupSecret, err := corev1.NewSecret(ctx, "k8up-backup-credentials", &corev1.SecretArgs{
+		Metadata: &metav1.ObjectMetaArgs{
+			Name:      pulumi.String("k8up-backup-credentials"),
+			Namespace: pulumi.String("default"),
+			Labels: pulumi.StringMap{
+				"k8up.io/backup": pulumi.String("true"),
+				"environment":    pulumi.String(environment),
+			},
+		},
+		Type: pulumi.String("Opaque"),
+		StringData: pulumi.StringMap{
+			"AWS_ACCESS_KEY_ID":     hmacKey.AccessId,
+			"AWS_SECRET_ACCESS_KEY": hmacKey.Secret,
+		},
+	}, pulumi.Provider(cluster.Provider))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create backup credentials secret: %w", err)
+	}
+
+	return &providers.BackupStorageInfo{
+		Endpoint:    "https://storage.googleapis.com",
+		BucketName:  bucketName,
+		Credentials: backupSecret,
+	}, nil
+}

deploy/pkg/providers/local/provider.go

@@ -1,7 +1,15 @@
 package local
 
 import (
+	"fmt"
+	"os/exec"
+	"strings"
+
 	"github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes"
+	appsv1 "github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes/apps/v1"
+	batchv1 "github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes/batch/v1"
+	corev1 "github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes/core/v1"
+	metav1 "github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes/meta/v1"
 	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
 
 	"github.com/modelcontextprotocol/registry/deploy/infra/pkg/providers"
@@ -10,6 +18,17 @@ import (
 // Provider implements the ClusterProvider interface for local Kubernetes clusters
 type Provider struct{}
 
+// getClusterName attempts to get the current Kubernetes cluster name from kubectl config
+func getClusterName() string {
+	cmd := exec.Command("kubectl", "config", "current-context")
+	output, err := cmd.Output()
+	if err != nil {
+		// Fallback to default if we can't get the context
+		return "local"
+	}
+	return strings.TrimSpace(string(output))
+}
+
 // CreateCluster configures access to a local Kubernetes cluster via kubeconfig
 func (p *Provider) CreateCluster(ctx *pulumi.Context, environment string) (*providers.ProviderInfo, error) {
 	// Create Kubernetes provider for local cluster
@@ -18,8 +37,237 @@ func (p *Provider) CreateCluster(ctx *pulumi.Context, environment string) (*prov
 		return nil, err
 	}
 
+	// Get the actual cluster name from kubectl config
+	clusterName := getClusterName()
+
 	return &providers.ProviderInfo{
-		Name:     pulumi.String("local").ToStringOutput(),
+		Name:     pulumi.String(clusterName).ToStringOutput(),
 		Provider: k8sProvider,
 	}, nil
 }
+
+// CreateBackupStorage creates MinIO for S3-compatible backup storage
+func (p *Provider) CreateBackupStorage(ctx *pulumi.Context, cluster *providers.ProviderInfo, environment string) (*providers.BackupStorageInfo, error) {
+	// Create MinIO namespace
+	minioNamespace, err := corev1.NewNamespace(ctx, "minio", &corev1.NamespaceArgs{
+		Metadata: &metav1.ObjectMetaArgs{
+			Name: pulumi.String("minio"),
+		},
+	}, pulumi.Provider(cluster.Provider))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create MinIO namespace: %w", err)
+	}
+
+	// Create MinIO credentials secret
+	minioSecret, err := corev1.NewSecret(ctx, "minio-credentials", &corev1.SecretArgs{
+		Metadata: &metav1.ObjectMetaArgs{
+			Name:      pulumi.String("minio-credentials"),
+			Namespace: minioNamespace.Metadata.Name(),
+		},
+		Type: pulumi.String("Opaque"),
+		StringData: pulumi.StringMap{
+			"accesskey": pulumi.String("minioadmin"),
+			"secretkey": pulumi.String("minioadmin"),
+		},
+	}, pulumi.Provider(cluster.Provider))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create MinIO credentials: %w", err)
+	}
+
+	// Create MinIO PVC for data storage
+	_, err = corev1.NewPersistentVolumeClaim(ctx, "minio-pvc", &corev1.PersistentVolumeClaimArgs{
+		Metadata: &metav1.ObjectMetaArgs{
+			Name:      pulumi.String("minio-pvc"),
+			Namespace: minioNamespace.Metadata.Name(),
+		},
+		Spec: &corev1.PersistentVolumeClaimSpecArgs{
+			AccessModes: pulumi.StringArray{
+				pulumi.String("ReadWriteOnce"),
+			},
+			Resources: &corev1.VolumeResourceRequirementsArgs{
+				Requests: pulumi.StringMap{
+					"storage": pulumi.String("10Gi"),
+				},
+			},
+		},
+	}, pulumi.Provider(cluster.Provider))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create MinIO PVC: %w", err)
+	}
+
+	// Deploy MinIO
+	minioDeployment, err := appsv1.NewDeployment(ctx, "minio", &appsv1.DeploymentArgs{
+		Metadata: &metav1.ObjectMetaArgs{
+			Name:      pulumi.String("minio"),
+			Namespace: minioNamespace.Metadata.Name(),
+		},
+		Spec: &appsv1.DeploymentSpecArgs{
+			Replicas: pulumi.Int(1),
+			Selector: &metav1.LabelSelectorArgs{
+				MatchLabels: pulumi.StringMap{
+					"app": pulumi.String("minio"),
+				},
+			},
+			Template: &corev1.PodTemplateSpecArgs{
+				Metadata: &metav1.ObjectMetaArgs{
+					Labels: pulumi.StringMap{
+						"app": pulumi.String("minio"),
+					},
+				},
+				Spec: &corev1.PodSpecArgs{
+					Containers: corev1.ContainerArray{
+						&corev1.ContainerArgs{
+							Name:  pulumi.String("minio"),
+							Image: pulumi.String("minio/minio:RELEASE.2025-07-23T15-54-02Z"),
+							Args: pulumi.StringArray{
+								pulumi.String("server"),
+								pulumi.String("/data"),
+								pulumi.String("--console-address"),
+								pulumi.String(":9001"),
+							},
+							Env: corev1.EnvVarArray{
+								&corev1.EnvVarArgs{
+									Name: pulumi.String("MINIO_ROOT_USER"),
+									ValueFrom: &corev1.EnvVarSourceArgs{
+										SecretKeyRef: &corev1.SecretKeySelectorArgs{
+											Name: minioSecret.Metadata.Name(),
+											Key:  pulumi.String("accesskey"),
+										},
+									},
+								},
+								&corev1.EnvVarArgs{
+									Name: pulumi.String("MINIO_ROOT_PASSWORD"),
+									ValueFrom: &corev1.EnvVarSourceArgs{
+										SecretKeyRef: &corev1.SecretKeySelectorArgs{
+											Name: minioSecret.Metadata.Name(),
+											Key:  pulumi.String("secretkey"),
+										},
+									},
+								},
+							},
+							Ports: corev1.ContainerPortArray{
+								&corev1.ContainerPortArgs{
+									ContainerPort: pulumi.Int(9000),
+									Name:          pulumi.String("api"),
+								},
+								&corev1.ContainerPortArgs{
+									ContainerPort: pulumi.Int(9001),
+									Name:          pulumi.String("console"),
+								},
+							},
+							VolumeMounts: corev1.VolumeMountArray{
+								&corev1.VolumeMountArgs{
+									Name:      pulumi.String("data"),
+									MountPath: pulumi.String("/data"),
+								},
+							},
+						},
+					},
+					Volumes: corev1.VolumeArray{
+						&corev1.VolumeArgs{
+							Name: pulumi.String("data"),
+							PersistentVolumeClaim: &corev1.PersistentVolumeClaimVolumeSourceArgs{
+								ClaimName: pulumi.String("minio-pvc"),
+							},
+						},
+					},
+				},
+			},
+		},
+	}, pulumi.Provider(cluster.Provider))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create MinIO deployment: %w", err)
+	}
+
+	// Create MinIO service
+	minioService, err := corev1.NewService(ctx, "minio-service", &corev1.ServiceArgs{
+		Metadata: &metav1.ObjectMetaArgs{
+			Name:      pulumi.String("minio"),
+			Namespace: minioNamespace.Metadata.Name(),
+		},
+		Spec: &corev1.ServiceSpecArgs{
+			Selector: pulumi.StringMap{
+				"app": pulumi.String("minio"),
+			},
+			Ports: corev1.ServicePortArray{
+				&corev1.ServicePortArgs{
+					Name:       pulumi.String("api"),
+					Port:       pulumi.Int(9000),
+					TargetPort: pulumi.Int(9000),
+				},
+				&corev1.ServicePortArgs{
+					Name:       pulumi.String("console"),
+					Port:       pulumi.Int(9001),
+					TargetPort: pulumi.Int(9001),
+				},
+			},
+		},
+	}, pulumi.Provider(cluster.Provider))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create MinIO service: %w", err)
+	}
+
+	// Create a Job to initialize the MinIO bucket
+	_, err = batchv1.NewJob(ctx, "minio-bucket-init", &batchv1.JobArgs{
+		Metadata: &metav1.ObjectMetaArgs{
+			Name:      pulumi.String("minio-bucket-init"),
+			Namespace: minioNamespace.Metadata.Name(),
+		},
+		Spec: &batchv1.JobSpecArgs{
+			Template: &corev1.PodTemplateSpecArgs{
+				Spec: &corev1.PodSpecArgs{
+					RestartPolicy: pulumi.String("OnFailure"),
+					Containers: corev1.ContainerArray{
+						&corev1.ContainerArgs{
+							Name:  pulumi.String("mc"),
+							Image: pulumi.String("minio/mc:RELEASE.2025-07-19T03-52-40Z"),
+							Command: pulumi.StringArray{
+								pulumi.String("/bin/sh"),
+								pulumi.String("-c"),
+							},
+							Args: pulumi.StringArray{
+								pulumi.String(`
+									until mc alias set myminio http://minio:9000 minioadmin minioadmin; do
+										echo 'Waiting for MinIO to be ready...'
+										sleep 5
+									done
+									mc mb -p myminio/k8up-backups
+									echo 'Bucket created successfully'
+								`),
+							},
+						},
+					},
+				},
+			},
+		},
+	}, pulumi.Provider(cluster.Provider), pulumi.DependsOn([]pulumi.Resource{minioService}))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create bucket initialization job: %w", err)
+	}
+
+	// Create backup credentials secret for S3 access
+	backupSecret, err := corev1.NewSecret(ctx, "k8up-backup-credentials", &corev1.SecretArgs{
+		Metadata: &metav1.ObjectMetaArgs{
+			Name:      pulumi.String("k8up-backup-credentials"),
+			Namespace: pulumi.String("default"),
+			Labels: pulumi.StringMap{
+				"k8up.io/backup": pulumi.String("true"),
+				"environment":    pulumi.String(environment),
+			},
+		},
+		Type: pulumi.String("Opaque"),
+		StringData: pulumi.StringMap{
+			"AWS_ACCESS_KEY_ID":     pulumi.String("minioadmin"),
+			"AWS_SECRET_ACCESS_KEY": pulumi.String("minioadmin"),
+		},
+	}, pulumi.Provider(cluster.Provider), pulumi.DependsOn([]pulumi.Resource{minioDeployment}))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create backup credentials secret: %w", err)
+	}
+
+	return &providers.BackupStorageInfo{
+		Endpoint:    "http://minio.minio:9000",
+		BucketName:  "k8up-backups",
+		Credentials: backupSecret,
+	}, nil
+}

deploy/pkg/providers/types.go

@@ -2,6 +2,7 @@ package providers
 
 import (
 	"github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes"
+	corev1 "github.com/pulumi/pulumi-kubernetes/sdk/v4/go/kubernetes/core/v1"
 	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
 )
 
@@ -11,8 +12,18 @@ type ProviderInfo struct {
 	Provider *kubernetes.Provider
 }
 
+// BackupStorageInfo represents S3-compatible backup storage configuration
+type BackupStorageInfo struct {
+	Endpoint    string // S3 endpoint (e.g., https://storage.googleapis.com or http://minio:9000)
+	BucketName  string
+	Credentials *corev1.Secret // Should contain AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY
+}
+
 // ClusterProvider defines the interface that all cluster providers must implement
 type ClusterProvider interface {
 	// CreateCluster creates a Kubernetes cluster and returns provider info
 	CreateCluster(ctx *pulumi.Context, environment string) (*ProviderInfo, error)
+
+	// CreateBackupStorage creates backup storage infrastructure
+	CreateBackupStorage(ctx *pulumi.Context, cluster *ProviderInfo, environment string) (*BackupStorageInfo, error)
 }