Deploy a Terraform-provisioned hardened HTTPS web stack (VPC, ECS cluster, OSS, SLB with CAS SSL certificates, RDS), then layer both local ECS data protection (automatic snapshot policies and scheduled backups) and cross-region disaster recovery with CloudMonitor alerting and Event Bridge notifications, creating a defense-in-depth resilience strategy covering data-level, instance-level, and regional failure modes.
Use this stack when deploying a compliance-ready, high-availability web application that requires automated infrastructure provisioning, automated local data protection, and cross-region disaster recovery. It is ideal for engineering teams needing defense-in-depth resilience against instance failures, data corruption, and regional outages while maintaining strict HTTPS termination and audit requirements.
provider "alicloud" with region = "cn-hangzhou". Define variables for vpc_cidr, ecs_image (aliyun_3_x64_20G_alibase_20230915.vhd), and cas_certificate_id.alicloud_vpc, alicloud_vswitch, and alicloud_instance. Attach alicloud_security_group allowing 443/tcp and restricted 22/tcp from bastion CIDR.alicloud_db_instance (MySQL 8.0) and alicloud_oss_bucket. Set RDS backup_policy with preferred_backup_period = "Monday-Sunday" and preferred_backup_time = "02:00Z-03:00Z".alicloud_slb and alicloud_slb_listener. Configure frontend_port = 443, backend_port = 80, server_certificate_id = var.cas_certificate_id, protocol = "https", and health_check_type = "tcp".alicloud_auto_snapshot_policy with retention_days = 30, time_points = ["02:00"], and enable_cross_region_copy = true targeting dest_region_id = "cn-shanghai". Attach via alicloud_disk_attachment.alicloud_cms_alarm for CPUUtilization > 80% and DiskReadIOPS > 5000. Route to alicloud_event_bridge_rule with event_pattern = {"source": ["acs.ecs"], "type": ["StateChange"]} targeting an alicloud_mns_topic.terraform apply. Verify snapshot replication via aliyun ecs DescribeAutoSnapshotPolicyEx --RegionId cn-hangzhou and confirm SLB health checks return 200.Traffic enters via SLB, which terminates HTTPS using CAS-managed certificates before forwarding to the Alibaba Cloud Linux ECS cluster. ECS instances serve stateless workloads, persisting transactional data to RDS and static assets to OSS. Local resilience is enforced by ECS auto-snapshot policies and RDS automated backups, while cross-region DR leverages encrypted snapshot replication. CloudMonitor continuously polls metrics, pushing threshold breaches to EventBridge, which routes structured alerts to notification endpoints.
alicloud provider v1.210+AliyunECSFullAccess, AliyunRDSFullAccess, AliyunSLBFullAccess, AliyunCASReadOnlyAccess, and AliyunCloudMonitorFullAccesscn-shanghai) with matching VPC CIDRs for DR failoverAliyunEventBridgeRole) authorized to publish to MNS/HTTP endpointsalicloud_ecs_snapshot_group causes inconsistent application states during restores.server_certificate_id in the SLB listener triggers SSLHandshakeFailed errors despite valid CAS uploads.AliyunECSImageCopyRole silently blocks automated snapshot replication, breaking DR readiness.event_pattern filters (e.g., omitting source: "acs.ecs") cause CloudMonitor alarms to drop before reaching notification targets.Q: How do I deploy a hardened production web stack with Terraform that includes HTTPS, automated backups, disaster recovery, and monitoring? A: You can deploy this architecture by using Terraform to provision a hardened HTTPS web stack that includes a VPC, ECS cluster, OSS, SLB with CAS SSL certificates, and RDS. After provisioning, you layer local ECS data protection using automatic snapshot policies and scheduled backups, then implement cross-region disaster recovery alongside CloudMonitor alerting and Event Bridge notifications. This combination establishes a defense-in-depth strategy that covers data-level, instance-level, and regional failure modes.