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How to Fix the "invalid active developer path" error
2 min read
Have you encountered the invalid active developer path error while trying, for example, to use git on your macOS system? This error occurs because Git requires the Command Line Tools for Xcode to be installed on your system (typically you'll encounter this after updating the system)
$ git xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun06/04/2023
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How to Change the Scope of a Kubernetes API Resource with Operator-SDK
2 min read
When creating a new API resource using the operator-sdk we can use the namespaced flag to make it Namespaced:
$ operator-sdk create api --group group \ --version v1 \ --kind Example \ --resource \ --controllerOr in the cluster scope:
$ operator-sdk create api --group group \ --version v1 \ --kind Example \ --resource \ --controller \ --namespaced=falseMaybe because we forgot to add the flag or because we have changed our mind, we don't need delete the object to change the scope of it, let's see how.
05/04/2023
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How to Monitor Kubernetes Applications with Prometheus Operator
2 min read
Prometheus is an open-source systems monitoring and alerting toolkit that users a multi-dimensional data model with time series data identified by metric name and key/value pairs.
The Prometheus operator is a Kubernetes operator that simplifies the provision and management of Prometheus instances on Kubernetes. It provides easy management of Prometheus instances as native Kubernetes resources, and also includes a built-in service discovery mechanism to automatically discover and monitor Kubernetes services.
04/04/2023
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sceptre: Multiple instances of a template
2 min read
When provisioning cloud resources using sceptre we can endup with plenty of errors that we'll have to track down:
$ sceptre create example Do you want to create 'example' [y/N]: y [2023-01-26 05:18:31] - example/s3 - Creating Stack [2023-01-26 05:18:33] - example/s3 s3 AWS::CloudFormation::Stack CREATE_IN_PROGRESS User Initiated [2023-01-26 05:18:37] - example/s3 Bucket AWS::ServiceCatalog::CloudFormationProvisionedProduct CREATE_IN_PROGRESS [2023-01-26 05:18:41] - example/s3 Bucket AWS::ServiceCatalog::CloudFormationProvisionedProduct CREATE_IN_PROGRESS Resource creation Initiated [2023-01-26 05:20:15] - example/s3 Bucket AWS::ServiceCatalog::CloudFormationProvisionedProduct CREATE_COMPLETE [2023-01-26 05:20:20] - example/s3 s3 AWS::CloudFormation::Stack CREATE_COMPLETE [2023-01-26 05:20:24] - example/demo-policy - Creating Stack [2023-01-26 05:20:25] - example/demo-policy demo-policy AWS::CloudFormation::Stack CREATE_IN_PROGRESS User Initiated [2023-01-26 05:20:29] - example/demo-policy IAMPolicy AWS::ServiceCatalog::CloudFormationProvisionedProduct CREATE_IN_PROGRESS [2023-01-26 05:20:33] - example/demo-policy IAMPolicy AWS::ServiceCatalog::CloudFormationProvisionedProduct CREATE_FAILED Resource handler returned message: "Invalid request provided: AWS::ServiceCatalog::CloudFormationProvisionedProduct" (RequestToken: 4580f5a3-bec2-72cc-5f9f-abad3792e57a, HandlerErrorCode: InvalidRequest) [2023-01-26 09:20:33] - example/demo-policy demo-policy AWS::CloudFormation::Stack ROLLBACK_IN_PROGRESS The following resource(s) failed to create: [IAMPolicy]. Rollback requested by user. [2023-01-26 05:23:12] - example/demo-policy IAMPolicy AWS::ServiceCatalog::CloudFormationProvisionedProduct DELETE_COMPLETE [2023-01-26 05:23:12] - example/demo-policy demo-policy AWS::CloudFormation::Stack ROLLBACK_COMPLETE16/03/2023
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GitHub Actions: Scheduled Runs
2 min read
GitHub Actions is a powerful automation tool that allows you to automate various tasks and processes, usually triggered by some change in the source repository. Using scheduled runs we are going to be able to schedule runs as well.
14/03/2023
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