ECS Patch Management

Scan and install operating system patches on Alibaba Cloud ECS instances using the OOS ACS-ECS-BulkyApplyPatchBaseline template.

Architecture

ECS + OOS + Cloud Assistant + Snapshot (optional)

• OOS Template: ACS-ECS-BulkyApplyPatchBaseline — built-in public template for batch patch operations
• Cloud Assistant: Executes patch commands on ECS instances (requires Cloud Assistant client installed)
• Snapshot Service: Creates pre-patch disk snapshots for rollback safety (optional)
• Patch Baseline: Defines which patches to scan/install (uses default system baseline or custom)

Pre-check: Aliyun CLI >= 3.3.3 Required

Run aliyun version to verify >= 3.3.3. If not installed or version too low, run curl -fsSL https://aliyuncli.alicdn.com/setup.sh | bash to install/update, or see references/cli-installation-guide.md for installation instructions.