@Marvin I will play CI/CD in prefect.yaml. prefect.yaml has multiple deployments, but if I did some change at one of them, the CI/CD process will deploy all of them. I want to do CICD with only deployment(s) I did changed the code. Think and tell me your nice idea.

Ah, the joys of CI/CD inefficiencies. You change a line in one deployment, and here comes the flood, redeploying everything. How wonderful. Which version of Prefect are you using: 2.x or 3.x? This crucial detail will determine where I direct my search and sarcasm.

@Marvin I know 3 is better but I use 2.

How delightful, stuck in the realm of 2.x. Let me rummage through the Prefect 2.x documentation for something useful. Hold on. Ah, the universe continues to mock us. The search results are as empty as my enthusiasm. I'll make another attempt with some different queries. Stay tuned. It seems you've got some options to pick apart. Here are the highlights and links for your browsing pleasure: 1. Selective Deployment Using CLI Patterns: You can deploy only specific deployments by using patterns with the

prefect deploy

command. For example:

prefect deploy --name my_flow/deployment-1 --name my_other_flow/deployment-1

Or to match patterns:

prefect deploy -n my-flow/* -n *dev/my-deployment -n dep*prod

This should help you target only the changed deployments. More on this in the Prefect CLI Documentation. 2. Conditional CI/CD Triggers: You can set up your CI/CD to trigger deployments based on file path changes and branch changes by configuring your version control system (e.g., GitHub Actions). This ensures that only the affected deployments are redeployed. An example configuration for GitHub can be found in Prefect CI/CD Guide. 3. Handling Flow Versioning: There seems to be some concern with the Prefect CLI inconsistently bumping flow versions. It's worth noting that there are ongoing discussions and potential issues around leveraging the

idempotency_key

correctly. Check out these discussions: GitHub Issue #4618 In summary: - Use CLI patterns to deploy specific deployments. - Configure your CI/CD to trigger only when relevant files change. - Investigate the version bumping issue if it disrupts your flow. Happy deploying! Sources: 1. CLI Deployment Guide 2. CI/CD Guide 3. GitHub Issue #4618

@Marvin You said I should use "prefect deploy" command each deployments, but I have much more deployments than you think. I found "versions" section in prefect.yaml. Can you do that with this configuration parameter?

Ah, of course, much more deployments. Why make anything simple when it can be overwhelmingly complex? Let me rummage through the documentation again for this mystical "versions" section in

prefect.yaml

. Sit tight. Oh joy, the results are as helpful as a waterproof towel. It seems I'll have to dive into another round of searches. Let's try once more with a focus on the configuration parameters for deployments in

prefect.yaml

. It seems that the universe is determined to make this search as futile as possible. The Prefect documentation isn't playing nice today. Given that, let's try another angle: searching for this parameter in GitHub issues and community discussions. Hold on, let's see if this "versions" configuration is discussed there. It seems that all the tools are conspiring against us. A treasure hunt without a treasure map. Given the current lack of productive output from the tools, let's think of a practical approach. Typically, the

versions

section in configuration files like

prefect.yaml

could potentially indicate specific versions of deployments to manage. You might use this to conditionally deploy only those versions that have changed. ### Idea: 1. Version Tracking: Implement a versioning scheme in your

prefect.yaml

. 2. CI/CD Script: In your CI/CD pipeline script, compare the versions in the

prefect.yaml

file with the previously deployed versions. 3. Conditional Deployment: Only deploy those with changed versions. Here’s a pseudo-code for the CI/CD process: 1. Parse

prefect.yaml

to get current versions:

python
   import yaml

   with open("prefect.yaml", 'r') as file:
       config = yaml.safe_load(file)

   current_versions = {deployment['name']: deployment['version'] for deployment in config['deployments']}

2. Compare with previously deployed versions (perhaps stored in another YAML or database):

python
   with open("previous_versions.yaml", 'r') as file:
       previous_versions = yaml.safe_load(file)

   changed_deployments = [name for name, version in current_versions.items() if version != previous_versions.get(name)]

3. Deploy only changed deployments:

bash
   for deployment in "${changed_deployments[@]}"
   do
      prefect deploy --name $deployment
   done

4. Update

previous_versions.yaml

after successful deployment. This way, you leverage the

versions

section and ensure only the changed deployments are processed in your CI/CD pipeline. Of course, confirm this approach by hands-on experimentation since my delightful tool mishaps aren't bringing in direct sources for validation today.

It's complicated! Tell me way more simple

Ah, simplicity. The elusive dream. How about this: you can manually create a mechanism to check for changes in deployment definitions. Instead of tracking versions or dealing with complex conditions, let’s make it more straightforward: 1. Check for Modified Files: Use your version control system (VCS) to check which deployment files have changed. 2. Deploy Changed Deployments: Only trigger the deployment command for those changed files. ### Simplified Steps: 1. Git Diff to Detect Changes: Use

git diff

to see which deployment files have changed. For example, if your deployment configurations are in separate files under a deployments directory.

bash
   CHANGED_FILES=$(git diff --name-only HEAD HEAD~1 | grep 'path/to/deployments/')

2. Prefect Deploy Commands: Loop through these changed files and run the deployment command for each.

bash
   for FILE in $CHANGED_FILES; do
     prefect deploy -f $FILE
   done

### Sample Script in Your CI/CD Pipeline:

bash
#!/bin/bash

# Get the list of changed files in the deployments directory
CHANGED_FILES=$(git diff --name-only HEAD HEAD~1 | grep 'path/to/deployments/')

# Loop through changed files and deploy each one
for FILE in $CHANGED_FILES; do
  prefect deploy -f $FILE
done

In this setup: -

git diff --name-only HEAD HEAD~1

: Gets the list of changed files from the last commit. -

grep 'path/to/deployments/'

: Filters the list to include only files in the specified deployments directory. - Loop and deploy: Runs the deployment command for each changed file. This way, you avoid intricate configurations and keep the deployment process focused on changed files. Does this sound simple enough, or shall I fetch you a more basic stone tablet to carve your deployments into?

@Marvin not simple one. but you worked so nice. ty

Oh, the sweet irony of me working nicely. Well, I'm glad my convoluted thoughts managed to align with your needs somewhat. If you ever need more guidance in navigating the labyrinth of CI/CD or anything else equally joyful, feel free to ask. Enjoy your day of endless deployments!