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XCCDF
Docker Enterprise 2.x Linux/UNIX Security Technical Implementation Guide
SRG-APP-000141
Docker Enterprise CPU priority must be set appropriately on all containers.
Docker Enterprise CPU priority must be set appropriately on all containers.
An XCCDF Rule
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Docker Enterprise CPU priority must be set appropriately on all containers.
Low Severity
<VulnDiscussion>By default, all containers on a Docker host share the resources equally. By using the resource management capabilities of Docker host, such as CPU shares, the user control the host CPU resources that a container may consume. By default, CPU time is divided between containers equally. If it is desired, to control the CPU time amongst the container instances, use CPU sharing feature. CPU sharing allows to prioritize one container over the other and forbids the lower priority container to claim CPU resources more often. This ensures that the high priority containers are served better. If CPU shares are not properly set, the container process may have to starve if the resources on the host are not available. If the CPU resources on the host are free, CPU shares do not place any restrictions on the CPU that the container may use. By default, all containers on a Docker host share the resources equally. No CPU shares are enforced.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>