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<@ULVA73B9P> how can I define a nodegroup and res...
# ask-marvin
p
@Marvin how can I define a nodegroup and resource limits in a kubernetes work-pool?
m
To define a node group and set resource limits in a Kubernetes work-pool, you can use custom job templates and configure the resources as required. 1. Define Node Group: - Use a custom job template to configure the node group for your Kubernetes work-pool. This allows you to specify the details of the Kubernetes nodes where your jobs will run. 2. Set Resource Limits: - In the custom job template, you can set resource limits (e.g., CPU, memory) for your jobs to ensure efficient resource utilization. For more details, you can refer to the Kubernetes Worker documentation and the guide on overriding work pool job variables. Here's a quick overview: - Use 
prefect work-pool
commands to list and inspect your work pools. - Set concurrency limits with 
set-concurrency-limit
and clear them with 
clear-concurrency-limit
. - Configure advanced settings like work queue priorities and specific concurrency limits per queue. For specific examples and configuration, please check the relevant sections in the documentation: - Work Pools - Managed Execution
Your message was too long by 1022 tokens - please shorten it and try again. For reference, here's your message at the allowed limit:
I have the following base job template:
```{ "variables": { "type": "object", "properties": { "env": { "type": "object", "title": "Environment Variables", "description": "Environment variables to set when starting a flow run.", "additionalProperties": { "type": "string" } }, "name": { "type": "string", "title": "Name", "default": "prefect-infra", "description": "Name given to infrastructure created by a worker." }, "image": { "type": "string", "title": "Image", "example": "docker.io/prefecthq/prefect:2-latest", "description": "The image reference of a container image to use for created jobs. If not set, the latest Prefect image will be used." }, "labels": { "type": "object", "title": "Labels", "description": "Labels applied to infrastructure created by a worker.", "additionalProperties": { "type": "string" } }, "command": { "type": "string", "title": "Command", "description": "The command to use when starting a flow run. In most cases, this
p
@Marvin I have the base job template created by default in prefect.
Copy code
...
"definitions": {
      "KubernetesClusterConfig": {
        "type": "object",
        "title": "KubernetesClusterConfig",
        "required": [
          "config",
          "context_name"
        ],
        "properties": {
          "config": {
            "type": "object",
            "title": "Config",
            "description": "The entire contents of a kubectl config file."
          },
          "context_name": {
            "type": "string",
            "title": "Context Name",
            "description": "The name of the kubectl context to use."
          }
        },
        "description": "Stores configuration for interaction with Kubernetes clusters.\n\nSee `from_file` for creation.",
        "secret_fields": [],
        "block_type_slug": "kubernetes-cluster-config",
        "block_schema_references": {}
      }
    },
    "description": "Default variables for the Kubernetes worker.\n\nThe schema for this class is used to populate the `variables` section of the default\nbase job template."
  },
...
Can you modify it to include : • Run only in nodegroup "nodegroup-prefect" • Memory request: 1GB • Memory limit: 2GB • CPU request: 0.2 • CPU limit : 1
m
Here is an example of how you can modify your Kubernetes job template to include the node group, memory, and CPU requirements: Update the 
KubernetesClusterConfig
to include the configuration requirements. Here is the modified code snippet for your job template:
Copy code
{
  "definitions": {
    "KubernetesClusterConfig": {
      "type": "object",
      "title": "KubernetesClusterConfig",
      "required": [
        "config",
        "context_name"
      ],
      "properties": {
        "config": {
          "type": "object",
          "title": "Config",
          "description": "The entire contents of a kubectl config file."
        },
        "context_name": {
          "type": "string",
          "title": "Context Name",
          "description": "The name of the kubectl context to use."
        }
      },
      "description": "Stores configuration for interaction with Kubernetes clusters.\n\nSee `from_file` for creation.",
      "secret_fields": [],
      "block_type_slug": "kubernetes-cluster-config",
      "block_schema_references": {}
    }
  },
  "properties": {
    "template": {
      "type": "object",
      "properties": {
        "spec": {
          "type": "object",
          "properties": {
            "template": {
              "type": "object",
              "properties": {
                "spec": {
                  "type": "object",
                  "properties": {
                    "nodeSelector": {
                      "type": "object",
                      "properties": {
                        "<http://kubernetes.io/nodegroup|kubernetes.io/nodegroup>": {
                          "type": "string",
                          "default": "nodegroup-prefect"
                        }
                      }
                    },
                    "containers": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "resources": {
                            "type": "object",
                            "properties": {
                              "requests": {
                                "type": "object",
                                "properties": {
                                  "memory": {
                                    "type": "string",
                                    "default": "1Gi"
                                  },
                                  "cpu": {
                                    "type": "string",
                                    "default": "200m"
                                  }
                                }
                              },
                              "limits": {
                                "type": "object",
                                "properties": {
                                  "memory": {
                                    "type": "string",
                                    "default": "2Gi"
                                  },
                                  "cpu": {
                                    "type": "string",
                                    "default": "1"
                                  }
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "description": "Default variables for the Kubernetes worker.\n\nThe schema for this class is used to populate the `variables` section of the default base job template."
}
This snippet sets up the node selector for the "nodegroup-prefect" node group and configures the resource requests and limits for memory and CPU. You can integrate this into your existing Kubernetes job template. For further customization and advanced configurations, refer to the Prefect documentation and the managed execution guide. If you need additional assistance or specific examples, feel free to reach out!
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