jason baker
02/28/2024, 8:31 PMprefect_work_pool
resource base_job_template
in Terraform as documented here: https://registry.terraform.io/providers/PrefectHQ/prefect/latest/docs/resources/work_pool#base_job_template
My work pool is of type = "cloud-run"
Marvin
02/28/2024, 8:31 PMprefect_work_pool
resource's base_job_template
with type
set to "cloud-run"
, it gave a basic Python example from Prefect. Unfortunately, I don't have direct access to create custom JSON templates, but I can guide you through what such a template might look like based on standard practice and documentation.
Here's a general structure you can use to create a JSON base_job_template
for a Prefect work pool of type = "cloud-run"
. This is not an exhaustive or precise example; you will need to adjust it according to your specific Google Cloud Run configurations:
json
{
"apiVersion": "batch/v1",
"kind": "Job",
"metadata": {
"generateName": "prefect-job-"
},
"spec": {
"template": {
"spec": {
"containers": [
{
"image": "<http://gcr.io/project-id/your-prefect-image|gcr.io/project-id/your-prefect-image>",
"name": "prefect-flow",
"env": [
{
"name": "PREFECT__CLOUD__AGENT__LABELS",
"value": "['your-labels']"
}
]
// Additional container configuration...
}
],
"restartPolicy": "Never"
// Additional template specification...
}
}
// Additional job specification...
}
}
This template is generic, and it may not directly apply to your needs. It's important to customize the "image"
with the image of your flow, add appropriate "env"
variables, and set other relevant Kubernetes job specifications.
To ensure correctness and best practices, you should consult the Prefect documentation and the Terraform Prefect provider documentation for detailed examples and guidelines tailored to your environment.
If you have a more specific configuration in mind or need further assistance, it may be helpful to check both the Prefect documentation and the Terraform registry for more information, or to search for any GitHub issues that might have discussed similar configurations.jason baker
02/28/2024, 8:34 PMMarvin
02/28/2024, 8:34 PMbase_job_template
JSON, including resource requests for 8000m CPU and 16Gi Memory in a Google Cloud Run work pool (note that Kubernetes uses milliCPU where 1000m equals 1 CPU core):
json
{
"apiVersion": "batch/v1",
"kind": "Job",
"metadata": {
"generateName": "prefect-job-"
},
"spec": {
"template": {
"spec": {
"containers": [
{
"image": "<http://gcr.io/project-id/your-prefect-image|gcr.io/project-id/your-prefect-image>",
"name": "prefect-flow",
"resources": {
"requests": {
"cpu": "8000m",
"memory": "16Gi"
},
"limits": {
"cpu": "8000m",
"memory": "16Gi"
}
},
"env": [
{
"name": "PREFECT__CLOUD__AGENT__LABELS",
"value": "['your-labels']"
}
// Additional environment variables...
]
// Additional container configuration...
}
],
"restartPolicy": "Never"
// Additional template specification...
}
}
// Additional job specification...
}
}
This JSON sets both the resource requests
and limits
to the same values, indicating that this job will be guaranteed to have available and will not exceed 8 CPU cores and 16Gi of Memory. Remember to replace "<http://gcr.io/project-id/your-prefect-image|gcr.io/project-id/your-prefect-image>"
with the actual location of your Prefect image in the Google Container Registry and detail any additional container specifications or environmental variables as needed.
It's important to keep in mind that depending on your specific Kubernetes cluster setup and the work your flows are performing, you may need to make additional modifications to properly integrate with your cloud environment. Always refer to your cloud provider's and Kubernetes documentation for specifics about creating and using Job resources.jason baker
02/28/2024, 10:21 PMbase_job_template
must contain both a job_configuration
key and a variables
│ key.","type":"value_error"}]Marvin
02/28/2024, 10:21 PMbase_job_template
. Specifically, the base_job_template
must contain both a job_configuration
key and a variables
key. This error is related to the request body not meeting the necessary schema requirements.
Unfortunately, the GitHub search did not return relevant issues directly related to this error. It might be a specific configuration issue or perhaps related to a newer feature or change that has not seen widespread discussion or reporting yet.
Please ensure that your base_job_template
is correctly configured with both a job_configuration
key and a variables
key as the error message suggests. If you need further assistance with this issue, please check the Prefect documentation or consider raising an issue in the Prefect GitHub repository for more specific help.jason baker
02/28/2024, 11:10 PMreturn worker_types_with_packages[worker_type]
~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
KeyError: 'cloud-run-push'
```
Marvin
02/28/2024, 11:10 PMjason baker
03/01/2024, 11:26 PMMarvin
03/01/2024, 11:26 PMbase_job_template
variables under properties
, you might need to use templating to dynamically generate the job name each time a new job is created.
The Prefect documentation suggests adding templating to the base_job_template
to allow for dynamic variable population. Unfortunately, the specific method for generating a new job name isn't given directly in the snippets I found.
However, the concept involves using placeholder values in the base_job_template
like {{ name }}
, which would then be replaced with a dynamically generated job name at runtime. You can define the template for job names in your job_configuration
section:
yaml
job_configuration:
name: "{{ dynamic_job_name }}"
...
The actual dynamic value (dynamic_job_name
) must be generated and passed to the template when the job is created. This likely involves custom logic within your Prefect configuration or code that provides the value for dynamic_job_name
.
For more detailed instructions, you should check the relevant sections of the Prefect documentation:
- For general information on work pools: Work Pools
- For guidance on developing a new worker type and templating: Developing a New Worker Type
These documents could provide insight into how variable templating and dynamic job naming can be accomplished in Prefect. Keep in mind that you may need to customize the solution to fit your specific requirements.jason baker
03/14/2024, 6:56 PMprefect-{task_name}-task0
task failure with a memory limit error (Error Code: 1). This was likely caused by running an image with a misspecified platform or architecture.Marvin
03/14/2024, 6:57 PMtask failure with a memory limit error
. This problem suggests that the memory allocated to the task was exceeded, which could be due to the task's actual memory requirements surpassing the specified limit of 16Gi
. Here are a couple of reasons why you might be seeing this error:
1. Misspecified Resource Limits: It's possible that the task you are running requires more memory than you have provisioned for it. Even though you've set a limit of 16Gi
, the task might need more memory to run successfully, or there might be an issue with how the memory limit has been specified in the configuration.
2. Incorrect Platform/Architecture Specification: The error also mentions that the failure might be caused by "running an image with a misspecified platform or architecture". This indicates a potential problem with the Docker image used for execution. If the image is built for a different platform or architecture than the one provided by GCP Cloud Run, it may not run as expected. For example, running an image built for x86_64 architecture on an arm64 platform could lead to issues.
Ensure that your Docker image is correctly built for the platform you're deploying to. Also, verify that the memory limits are correctly specified and align with the task's requirements.
The Prefect documentation related to managed execution and Docker images might have more information, so it could be helpful to refer to those sections:
- Managed Execution
Since we do not have specific documentation explaining this error in the context of GCP Cloud Run directly, you might want to also look into the GCP documentation or consider reaching out to Prefect's support channels for more detailed help, especially if your tasks demand more memory or if there's an issue with the platform or architecture specification.
If the problems persist, it's also worth checking if there are constraints on work pools for your account tier, which might be affecting the execution of your tasks.jason baker
03/14/2024, 7:01 PMjason baker
03/14/2024, 7:01 PMMarvin
03/14/2024, 7:02 PMcloud-run-v2:push
type work pools on GCP Cloud Run. However, it is generally understood that Google Cloud Run supports container images built for multiple architectures, including x86_64 and arm64, and it automatically provides the infrastructure that matches the container's architecture.
To determine the exact architecture that your cloud-run-v2:push
work pool is using, you would typically look at the container image that is being deployed to that work pool. If the container image is built for a specific architecture, Google Cloud Run will allocate the resources accordingly.
For more detailed information, you might want to review the Google Cloud Run documentation or the Prefect documentation on deploying to serverless workers and push work pools:
- Push Work Pools
- Serverless Workers
If in doubt, it's a good idea to build your Docker images as multi-architecture images to ensure compatibility with different compute environments, or to specify the desired platform when building and pushing your Docker image.jason baker
03/19/2024, 2:27 PMMarvin
03/19/2024, 2:28 PMjason baker
03/19/2024, 10:38 PMMarvin
03/19/2024, 10:38 PMjason baker
03/19/2024, 11:12 PMMarvin
03/19/2024, 11:13 PMwork-pool-template.json
for a GCP Cloud Run v2:push work pool.
However, as previously mentioned, Google Cloud Run is designed to be stateless, and the typical method for accessing storage in a stateless environment like Cloud Run is through the use of Google Cloud Storage. Instead of mounting a volume, Cloud Run workloads would access Cloud Storage using the Google Cloud client libraries available in your programming language of choice.
To access Cloud Storage from a Cloud Run instance, you would generally:
1. Include the necessary Google Cloud client library in your application to interact with Cloud Storage. For example, for Python, you could use google-cloud-storage
.
2. Authenticate to Google Cloud within your application, which can be done automatically on Cloud Run if your Cloud Run service is running with a service account that has the appropriate permissions to access the storage bucket.
3. Use the Google Cloud client library to read from or write to the storage bucket as needed by your application logic.
Here's an example using Python to access a Cloud Storage bucket:
python
from google.cloud import storage
def access_gcs_bucket(bucket_name):
storage_client = storage.Client()
bucket = storage_client.get_bucket(bucket_name)
blobs = bucket.list_blobs()
for blob in blobs:
print(blob.name)
Make sure the service account associated with your Cloud Run service or your workload has permissions like Storage Object Viewer
and Storage Object Creator
for the Cloud Storage buckets upon which you'll be operating.
Regarding using work-pool-template.json
specifically, you would not typically declare a Google Cloud Storage bucket in such a file because the work pool template pertains to Cloud Run configurations that do not support volume attachments directly. Instead, you define the necessary environment variables or pass in service account credentials if needed for the Google Cloud client libraries within your application code.
For more detailed guidance on using Cloud Storage with Cloud Run, refer to the Google Cloud documentation on:
- Cloud Run
- Google Cloud Storagejason baker
03/19/2024, 11:15 PMMarvin
03/19/2024, 11:16 PMwork-pool-template.json
for a GCP Cloud Run v2:push work pool, you would follow the guidelines provided in the Cloud Run documentation. As per the documentation, it involves updating the volumes
and volumeMounts
configuration in your Cloud Run service YAML manifest.
Here is an example of how a volume could be declared with Cloud Storage:
json
{
"apiVersion": "<http://run.googleapis.com/v2|run.googleapis.com/v2>",
"kind": "Job",
"metadata": {
"name": "my-job"
},
"template": {
"volumes": [
{
"name": "my-volume",
"csi": {
"driver": "<http://csi.storage.gke.io|csi.storage.gke.io>",
"readOnly": true,
"volumeAttributes": {
"bucket": "BUCKET_NAME"
}
}
}
],
"containers": [
{
"name": "my-container",
"image": "<http://gcr.io/my-project/my-image|gcr.io/my-project/my-image>",
"volumeMounts": [
{
"mountPath": "/mnt/gcs",
"name": "my-volume"
}
]
}
]
}
}
Replace BUCKET_NAME
with the name of your Cloud Storage bucket and customize the mountPath
to the directory where you want the volume to be mounted inside your container.
When using this configuration in a work-pool-template.json
file, it would be similar, but make sure to align the format with the work pool template specifications and provide all the necessary fields.
For the most accurate and detailed information on how to do this, refer to the Cloud Run documentation for configuring services to use Cloud Storage as a volume mount, as there might be additional steps or nuances depending on your specific use case.jason baker
03/19/2024, 11:20 PMMarvin
03/19/2024, 11:20 PMjason baker
03/19/2024, 11:32 PMMarvin
03/19/2024, 11:33 PMbeta
command like so:
bash
gcloud beta run ...
For Prefect work pools that interface with GCP Cloud Run, there might be an equivalent setting or flag in Prefect's configuration to indicate that you want to use the beta version of the service.
Since the documentation does not explicitly provide the method to tell your work pool to use the beta version of Cloud Run, it would be best to do the following:
- Review any recent Prefect changelogs or announcements for guidance on using beta features, such as in the changelog for version 2.14.11.
- Consult the Prefect community or support channels to ask how to configure work pools to use the beta version of a service like GCP Cloud Run.
- Check if there are configuration options within Prefect's work-pool
command or within the Prefect Cloud UI for specifying the GCP Cloud Run beta.
Keep in mind that because beta features can introduce changes and potentially unstable behavior, always test thoroughly before using these features in a production environment.jason baker
03/20/2024, 3:19 PMMarvin
03/20/2024, 3:19 PMyaml
apiVersion: serving.knative.dev/v1
kind: Service
metadata:
name: service-name
namespace: 'project-id'
spec:
template:
spec:
containers:
- image: <http://gcr.io/project-id/image-name|gcr.io/project-id/image-name>
volumeMounts:
- name: data
mountPath: /data
volumes:
- name: data
secret:
secretName: storage-bucket-name
The volumeMounts
field is where you define your mount into the container file system and volumes
defines the actual Cloud Storage bucket you're linking to. This setup should be defined when deploying your service or when updating its configuration.
If you need to run some initialization code inside your Cloud Run container before the actual application starts, you can handle that within your container's entrypoint script. This entrypoint would first execute any preparation code you require, and then proceed to start your main application.
However, if you're looking for something akin to an init container in Kubernetes, which can run setup scripts before the application container starts, this is not something that Cloud Run currently supports as it is not the same as the Kubernetes model and is designed primarily for stateless applications.
As such, all mount points should be configured statically through the deployment manifest and cannot be altered once the container is running. If this changes in the future or if you have additional needs that the current capability doesn't address, Google Cloud's documentation or support might provide newer solutions.jason baker
03/20/2024, 3:21 PMMarvin
03/20/2024, 3:21 PMyaml
apiVersion: serving.knative.dev/v1
kind: Service
metadata:
name: service-name
namespace: 'project-id'
spec:
template:
spec:
containerConcurrency: 80
containers:
- image: <http://gcr.io/project-id/image-name|gcr.io/project-id/image-name>
volumeMounts:
- name: my-volume
mountPath: /path/to/mount
volumes:
- name: my-volume
gcs:
bucket: 'my-bucket'
type: 'read_only' # or 'read_write'
2. Apply this configuration using gcloud or the web console when creating or updating your Cloud Run service.
If you want to run initialization code before your main application starts within a Cloud Run container, you should incorporate this process into your Dockerfile's CMD or the script that is set as the entrypoint. This way, any preliminary setup tasks can be performed by the entrypoint script, and once completed, the main application will start.
Unfortunately, any adjustments to mounting or altering the runtime environment of the container must be handled ahead of time during the build or deployment process due to the nature of Cloud Run's architecture. If you need behavior that requires more dynamic adjustments at startup, you might have to explore alternative options like Google Kubernetes Engine (GKE), which offers more flexibility in this regard, or implement an application-level solution that pulls necessary resources from Cloud Storage at runtime.jason baker
03/20/2024, 3:44 PMgcloud beta
environment for my services, in order to mount a cloud storage volume as documented here: https://cloud.google.com/run/docs/configuring/services/cloud-storage-volume-mountsMarvin
03/20/2024, 3:44 PMgcloud beta
environment and mount a Cloud Storage volume as per the documentation provided, you would need to ensure that your work-pool-template.json
includes the appropriate configuration for a Cloud Storage volume mount. However, it's important to note that the beta features of GCP products are typically configured through the gcloud beta
command-line tool or through the Google Cloud Console and might not be directly supported through Prefect configuration files like work-pool-template.json
.
Here’s a generalized example of what the service configuration might look like when using the gcloud command-line tool with the beta version to deploy a Cloud Run service with a mounted Cloud Storage volume:
bash
gcloud beta run services update SERVICE_NAME \
--update-secrets=/mounted-path=SECRET_NAME:latest \
--region=REGION \
--project=PROJECT_ID
This command line interface example performs an in-place update of an existing Cloud Run service, mounting a secret into the specified path. For beta features, the deployment must be done through gcloud beta
to use the unreleased features that are not in the stable release.
For declaratively stating the use of gcloud beta
in a JSON configuration file, there may not be a direct method to do so since these configuration files define the end state of resources and do not dictate the tooling used to achieve that state.
Therefore, if you wish to use beta features, you will likely need to interact with the gcloud beta
CLI or console directly until such features make it into the stable API and are supported in declarative JSON templates.
To use beta features, ensure you have the latest version of the gcloud CLI installed and initialize it with beta components:
bash
gcloud components install beta
gcloud components update
Then you would interact with the beta commands as needed for your use case. Please refer to Google Cloud’s documentation and beta command-line tool help (gcloud beta --help
) for information on the specific flags and configurations supported in the beta environment.
In case there has been a recent update that allows for specifying beta features in configuration files, I recommend checking the Google Cloud documentation or contacting Google Cloud support for the most accurate information.jason baker
03/20/2024, 3:46 PMgcloud beta run services update
command you sentMarvin
03/20/2024, 3:46 PMbash
prefect deployment inspect '<DEPLOYMENT_NAME>'
Using the Prefect Client within your Python code, you can retrieve information about your deployments with something like the following example:
python
from prefect import Client
client = Client()
# You will need the deployment ID or name to retrieve its details
deployment_id = 'your-deployment-id'
# Retrieve the deployment information
deployment_info = client.get_deployment(deployment_id=deployment_id)
print(deployment_info)
Within the retrieved deployment information, you may find the service name or other related details that would then allow you to construct your gcloud beta
command accordingly.
Remember to replace 'your-deployment-id'
with the actual deployment ID or use the deployment name as appropriate for your situation.
The Prefect UI may also provide the service name and related details for each deployment, accessible through the interface under your workspace and deployment details.
For the most accurate and specific information about interacting with deployments in Prefect, please consult the Prefect documentation on deployments. If necessary, you can extend Prefect's functionality through custom scripts or by contributing to the Prefect project to handle scenarios like extracting and using the service name dynamically.jason baker
03/20/2024, 4:08 PMMarvin
03/20/2024, 4:09 PMK_SERVICE
environment variable, which Cloud Run automatically populates with the name of the service.
Here is a decorated Python function that retrieves the Cloud Run service name from the environment:
python
import os
from prefect import flow
@flow
def get_cloud_run_service_name():
service_name = os.getenv('K_SERVICE')
print(f"The current Cloud Run service name is: {service_name}")
return service_name
if __name__ == "__main__":
service_name = get_cloud_run_service_name()
# Additional code to handle the service_name
When this Prefect flow runs on Cloud Run, it will print and return the name of the current Cloud Run service. If the flow is not running inside Cloud Run, service_name
will be None
.
Remember, when running this code outside of Cloud Run for testing purposes, you will need to mock or manually set the K_SERVICE
environment variable. If the environment variable is not set, service_name
will be None
.jason baker
03/20/2024, 8:50 PMMarvin
03/20/2024, 8:50 PMK_SERVICE
or CLOUD_RUN_JOB
environment variables might not be set in your containers that are running from a Cloud Run v2:push work pool.
Normally, in a standard Google Cloud Run (v1) environment, some environment variables like K_SERVICE
are automatically populated by the platform to provide context about the running service. However, Cloud Run Jobs (v2) and the execution model used within a v2:push work pool may handle environment variables differently or may not set them at all, especially if they don't align with the stateless design of Cloud Run.
Here are some potential reasons why those environment variables might not be set:
1. Version Differences: The behavior of environment variables might differ between Cloud Run (v1) and Cloud Run Jobs (v2). The automatic setting of certain variables may not be implemented in Cloud Run v2.
2. Configuration Issues: It's possible that there might be a specific way to configure these environment variables within Cloud Run Jobs (v2) that hasn't been applied.
3. Different Execution Context: If the work pool is launching jobs that aren't classified as "services" by Cloud Run, it might not set service-related environment variables like K_SERVICE
.
4. Platform Updates: If Cloud Run v2 is new or has been updated recently, it's possible that certain features are still being rolled out or documented, and behavior can change.
5. Documentation: There may be a lack of updated documentation on the new behaviors and configurations in Cloud Run v2:push work pools. As a result, the setting of environment variables can be unclear.
To troubleshoot this issue further:
- You could reach out to Google Cloud Support for assistance specific to Cloud Run v2 and why those environment variables are not present.
- You may also want to ask in the Google Cloud community forums where there may be discussions about similar issues or recent platform changes.
- Review the Cloud Run v2 documentation or release notes for any recent updates that may provide details on working with environment variables in this context.
If this is a recurrent issue that is not addressed in the documentation and there is no apparent solution, consider reporting it to Google Cloud as feedback about the Cloud Run v2 feature set.