Container QoS Policy Enforcement in Virtualized Networks
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Solution Overview
Problem
In virtualized computing environments, managing network resources among multiple virtual machines and containers is challenging, particularly in differentiating and allocating network bandwidth to individual containers, leading to potential bandwidth starvation or dominance issues.
Innovation Solution
Implementing Quality of Service (QoS) policies that identify and differentiate traffic flows from specific containers by adding tag data to packets and enforcing bandwidth allocations based on configured QoS policies, ensuring fair network resource distribution among containers within and across virtual machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If network resources are shared among multiple virtual machines and containers, then resource utilization efficiency is improved, but network bandwidth management and differentiation become complex
Solution Approach 1:
The patent segments network resources by introducing hierarchical QoS policies that divide network bandwidth into different levels: virtual machine-level QoS policies and container-level QoS policies. This segmentation allows independent management of network resources at each level, resolving the complexity of managing shared resources while maintaining high utilization efficiency.
Solution Approach 2:
The patent introduces QoS policy components as intermediaries between the physical network resources and the virtual machines/containers. These components include QoS policy information structures, QoS enforcement mechanisms, and network virtualization managers that mediate resource allocation, simplifying the management complexity while enabling efficient resource sharing.
2Ease of operation
If network bandwidth is allocated to individual containers, then fair resource distribution is improved, but system complexity increases due to traffic flow differentiation requirements
Solution Approach 1:
The patent applies local quality by assigning specific QoS characteristics to individual containers based on their traffic flow requirements. Each container can have customized QoS policies that define its specific bandwidth allocation, priority level, and traffic handling rules, enabling fair resource distribution while managing complexity through localized policy application rather than global reconfiguration.
3Reliability
If QoS policies are implemented for container traffic isolation, then network performance stability is improved, but processing overhead increases due to packet tagging and policy enforcement
Solution Approach 1:
The patent implements preliminary action by pre-configuring QoS policies and associating them with container identifiers before traffic flows are established. The system pre-establishes mapping relationships between containers and their QoS parameters, so that during actual traffic handling, the enforcement mechanism can directly apply pre-determined policies without complex real-time calculations, reducing processing overhead while maintaining performance stability.
Data Source
AI summary
An example method is provided for a computing device to provide quality of service (QoS) for a container in a virtualized computing environment. The method may comprise receiving a traffic flow of packets from a virtual machine and identifying a container from which the traffic flow originates based on content of the received traffic flow of packets. The container may be supported by the virtual machine. The method may further comprise retrieving a QoS policy configured for the identified container. For example, the QoS policy may specify a network bandwidth allocation for the container. The method may further comprise forwarding the received traffic flow of packets according to the QoS policy.