Stabilising Hybrid Linux and Windows Workloads on Amazon EKS
Kubernetes scheduling failures and Windows-container deployment issues were getting in the way of placing services on Amazon EKS. Ficode investigated the constraints, corrected the relevant workload configuration and checked that the deployments could run.
The project in context
The client’s energy intelligence platform brings together information from commercial building systems. Some services use Linux containers; others need Windows. Kubernetes scheduling failures and Windows-container deployment issues were getting in the way of placing these services on Amazon EKS.
Mixed operating systems. Unmatched nodes. Stalled deployments.
The platform needed to run Linux and Windows containers within its Kubernetes environment. These workloads cannot be placed on interchangeable worker nodes: each needs a compatible operating system, while other scheduling settings can further limit placement.
The challenge Before
Mixed workloads
Linux and Windows containers need different nodesScheduling mismatch
Workload constraints do not align with available placementDeployment problems
Some workloads cannot schedule or deploy as intendedWith Ficode Connected Approach
Review requirements
Check operating systems and scheduling constraintsCorrect configuration
Align workloads with compatible execution environmentsValidate deployments
Confirm corrected workloads deploy on Amazon EKSFind the constraint. Correct the placement. Check the deployment.
Review
Examined the scheduling failures and Kubernetes feedback to understand which workloads were not being placed.
Match
Compared operating-system requirements and other placement constraints with the execution environments available.
Correct
Corrected the workload and deployment configuration so Linux and Windows containers could target compatible nodes.
Validate
Deployed and checked the corrected workloads on Amazon EKS.
From workload requirements to compatible Kubernetes nodes
Platform workloads
Linux or Windows containers with defined runtime needsKubernetes scheduling
Amazon EKS matches placement constraints to nodesCompatible worker nodes
Linux workloads on Linux nodes; Windows containers on Windows nodesCONNECTED OUTCOME
Scheduling failures and Windows-container deployment problems were addressed, and the corrected workloads were deployed and checked on Amazon EKS.
A more dependable runtime for mixed workloads
Linux and Windows support
Both operating-system workload types can be directed towards the compatible worker nodes they require.
Scheduling problems addressed
Corrected settings resolve the reported mismatch between workload requirements and placement conditions.
Deployment path checked
The adjusted workloads were deployed and checked on Amazon EKS rather than treated as a configuration-only fix.
Platform services supported
A functioning application runtime supports the wider building-energy platform and its data-processing services.
Confirmed technology and implementation scope
Amazon EKS (managed Kubernetes control plane and runtime); Linux containers; Windows containers.
