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Exception thrown when using a file-based pod template #551
Description
I tried this:
Configured the operator to load the Kubernetes pod template to use from a YAML file, thanks to the SYNAPSE_RUNTIME_K8S_POD environment variable.
Here's the pod template:
metadata: {}
spec:
containers:
- image: ghcr.io/serverlessworkflow/synapse/runner:1.0.0-alpha5.19
imagePullPolicy: IfNotPresent
name: runner
ports:
- containerPort: 8080
name: http
protocol: TCP
restartPolicy: NeverThis happened:
An exception is thrown, indicating that the pod template is invalid.
Here are the related logs:
[08:23:31] fail: Synapse.Runtime.Kubernetes.Services.KubernetesRuntime[0]
An error occurred while creating a new Kubernetes process for workflow instance 'form-package-deploy-f2252b913a64.default': System.InvalidOperationException: The configured Kubernetes runtime pod template is not valid
at Synapse.Runtime.Kubernetes.Services.KubernetesRuntime.CreateProcessAsync(Workflow workflow, WorkflowInstance workflowInstance, ServiceAccount serviceAccount, CancellationToken cancellationToken) in /src/src/runtime/Synapse.Runtime.Kubernetes/Services/KubernetesRuntime.cs:line 94
[08:23:31] fail: Synapse.Operator.Services.WorkflowInstanceController[0]
An error occurred while handling the creation of workflow instance 'form-package-deploy-f2252b913a64.default': System.InvalidOperationException: The configured Kubernetes runtime pod template is not valid
at Synapse.Runtime.Kubernetes.Services.KubernetesRuntime.CreateProcessAsync(Workflow workflow, WorkflowInstance workflowInstance, ServiceAccount serviceAccount, CancellationToken cancellationToken) in /src/src/runtime/Synapse.Runtime.Kubernetes/Services/KubernetesRuntime.cs:line 94
at Synapse.Operator.Services.WorkflowInstanceHandler.StartProcessAsync(CancellationToken cancellationToken) in /src/src/operator/Synapse.Operator/Services/WorkflowInstanceHandler.cs:line 137
at Synapse.Operator.Services.WorkflowInstanceHandler.HandleAsync(CancellationToken cancellationToken) in /src/src/operator/Synapse.Operator/Services/WorkflowInstanceHandler.cs:line 123
at Synapse.Operator.Services.WorkflowInstanceController.OnResourceCreatedAsync(WorkflowInstance workflowInstance, CancellationToken cancellationToken) in /src/src/operator/Synapse.Operator/Services/WorkflowInstanceController.cs:line 223
After verification, the issue occurs because the V1PodTemplate is not marked with the expected YAML attributes, thus property name resolution fails.
This can be solved by using the KubernetesYaml helper class to deserialize the V1PodTemplate.
I expected this:
The defined pod template to be successfully used by the operator.
Is there a workaround?
No response
Anything else?
No response
Platform(s)
No response
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cdavernas commentedon Aug 26, 2025
@bvandewe bump