Melek Alan
07/30/2025, 10:12 AMselfHostedServer
All deployments share a common jobTemplate
.
Some deployments are more resource-intensive than others.
Is there a way to define different resources.requests/limits
per deployment, without duplicating the entire job template?Marvin
07/30/2025, 10:12 AMMarvin
07/30/2025, 10:12 AMjob_variables
parameter. Here's how:
python
from prefect import flow
from prefect.deployments import Deployment
@flow
def my_resource_intensive_flow():
# Your flow code here
pass
# Deploy with custom resource requirements
deployment = flow.from_source(
source="your_source",
name="resource-intensive-deployment",
work_pool_name="your-k8s-workpool",
job_variables={
"job": {
"spec": {
"template": {
"spec": {
"containers": [{
"name": "prefect-job", # This name must match your base template
"resources": {
"requests": {
"memory": "2Gi",
"cpu": "1000m"
},
"limits": {
"memory": "4Gi",
"cpu": "2000m"
}
}
}]
}
}
}
}
}
).deploy()
Key points to note:
1. The job_variables
structure follows the Kubernetes Job specification format.
2. Make sure the container name (prefect-job
in the example) matches the name in your base template.
3. You only need to specify the parts you want to override - the rest will be inherited from your base template.
4. The resources specification follows the standard Kubernetes resource request/limits format.
For a deployment with different resource requirements, you would simply adjust the values in the resources
section while keeping the rest of your base template intact.
For example, for a lighter-weight deployment:
python
deployment = flow.from_source(
source="your_source",
name="lightweight-deployment",
work_pool_name="your-k8s-workpool",
job_variables={
"job": {
"spec": {
"template": {
"spec": {
"containers": [{
"name": "prefect-job",
"resources": {
"requests": {
"memory": "256Mi",
"cpu": "100m"
},
"limits": {
"memory": "512Mi",
"cpu": "500m"
}
}
}]
}
}
}
}
}
).deploy()
This approach allows you to:
1. Maintain a single base job template with common configurations
2. Override resource specifications per deployment
3. Keep your deployment code DRY (Don't Repeat Yourself)
4. Maintain flexibility for different workload requirements
Remember that the resource values you specify must be valid Kubernetes resource quantities and should align with your cluster's capacity and quotas.Melek Alan
08/13/2025, 8:19 AM{
"namespace": "prefect",
"resources": {
"requests": {
"cpu": "100m",
"memory": "128Mi"
}
},
"finished_job_ttl": 10,
"image_pull_policy": "Always"
}
Marvin
08/13/2025, 8:19 AMexplore_module_offerings
📊 Tools used:
• explore_module_offerings
(11x)
• research_prefect_topic
(18x)
• review_common_3x_gotchas
(12x)
• search_prefect_3x_docs
(36x)Marvin
08/13/2025, 8:21 AMMelek Alan
08/13/2025, 8:32 AM{
"namespace": "prefect",
"resources": {
"requests": {
"cpu": "100m",
"memory": "128Mi"
}
},
"finished_job_ttl": 10,
"image_pull_policy": "Always"
}
Marvin
08/13/2025, 8:32 AMMarvin
08/13/2025, 8:35 AM