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find and findstr: grep for Windows
2 min read
On a Windows server there's also a way of fitering other command's output just like you would do using grep on a Linux: You can do it using find and findstr
09/04/2021
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DynamoDB table for state locking and consistency checking on terraform
2 min read
When using a remote terraform state with S3, it is recomended to use a dynamoDB table for:
- State locking: Ensures the terrafrom state it is not being modified by two threads at the same time
- Consistency checking: Makes sure that that terraform it's being used it is the one that it is expected to be used
For example:
terraform { backend "s3" { bucket = "infra-tfstate" key = "jenkins/terraform.tfstate" region = "eu-west-1" dynamodb_table = "terraform_locks" } }08/04/2021
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Terraform error: Provider configuration not present
2 min read
Due to the need to use the count keyword for making a resource optional I wanted to upgrade from terraform 0.12 to 0.13 but while doing so I found the following error:
Error: Provider configuration not present To work with module.jenkins.aws_iam_policy.jenkins_policy its original provider configuration at provider["registry.terraform.io/-/aws"] is required, but it has been removed. This occurs when a provider configuration is removed while objects created by that provider still exist in the state. Re-add the provider configuration to destroy module.jenkins.aws_iam_policy.jenkins_policy, after which you can remove the provider configuration again.07/04/2021
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AWS CLI configuration for assuming a different role
2 min read
On a previous post we saw how to test we can assume a role using AWS CLI but how can we configure AWS CLI to assume an specific role before performing some request? We can do it using a profile to save us from the trouble of having to change three different environment variables.
06/04/2021
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k3s: Join a new worker node to an existing cluster
3 min read
On a previous post we saw how ridiculously easy is to bootstrap a k3s cluster on a Raspberry Pi but what do we need to do to join new worker nodes to the cluster?
05/04/2021
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