Patching out-of-compliance instances

Many of the same AWS Systems Manager tools and processes you can use to check instances for patch compliance can be used to bring instances into compliance with the patch rules that currently apply to them. To bring instances into patch compliance, Patch Manager, a capability of AWS Systems Manager, must run a Scan and install operation. (If your goal is only to identify out-of-compliance instances and not remediate them, run a Scan operation instead. For more information, see Identifying out-of-compliance instances.)

Install patches using Systems Manager

You can choose from several tools to run a Scan and install operation:

• Create a patching configuration that includes a maintenance window to install patches on a schedule. For information, see Creating a patching configuration (console).

• Create a maintenance window that uses the Systems Manager document (SSM document) AWS-RunPatchBaseline in a Run Command task type. For information, see Walkthrough: Creating a maintenance window for patching (console).

• Manually run AWS-RunPatchBaseline in a Run Command operation. For information, see Running commands from the console.

• Install patches on demand using the Patch now option. For information, see Patching instances on demand (console).