How to Force Gitlab pipeline to fail on condition
if you have a conditional in your Gitlab pipeline stage that checks if something has succeeded or failed, then you can use this to pass or fail your …
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131 articles about cli development, tools, and best practices
How to run AWS CLI commands based on AWS CLI Version in Bash
If you find yourself having the requirements to support both AWS CLI v1 and v2 simultaneously, then you can use the following conditional in Bash to …
Read Article →[Solved] Unknown options: –cli-binary-format AWS CLI
If you have tried calling the AWS CLI and got the following error:
Unknown options: --cli-binary-format
Then it is because you are using the AWS CLI …
How to Check OS version and flavor in Linux
If you need to check the version and flavour of the running Linux instance, then you can try the below commands:
cat /etc/os-release
lsb_release -a …[Solved] Network interface is in use by another service in AWS
If you have tried to delete a Security Group, or VPC, or various other resources and you get the dreaded Network interface is in use by another …
How to Uninstall npm packages
We typically install an npm package as follows:
npm install <package_name>
But how do we uninstall an npm package?
How to uninstall an npm …
Read Article →How to create a Countdown Timer in Python
If you need to count down a specific amount of time, say for example, when a token is set to expire, then a countdown timer will be useful.
Step 1 – …
Read Article →How to Rename a Git Branch
If you want to rename a git branch, then you have a few options, dependent on the use-case.
Option 1 – Rename a Git Branch
git branch -a …[Solved] Terraform Error accessing remote module registry in PowerShell
If you are using PowerShell and trying to run a terraform init, you may get an error as follows:
Error: error accessing remote module registry
Failed …
How to Save sed Output Directly to a File
You have 3 options here:
Option 1: use tee with sed
sed 's/Hello/Hi/g' file-name | tee file
Option 2: use > with sed
sed …How to copy S3 objects between AWS accounts
In your source account create a customer-managed policy:
{
"Version": "2012-10-17",
"Statement": [
{ …How to find all symlinks in a directory tree on Mac
If you need to recursively find all symbolic links in a directory tree on a Mac, then you have a couple of options.
You could be trying to find them …
Read Article →How to Install App Mesh on AWS EKS
You can follow the steps below to install App Mesh on AWS EKS (Kubernetes).
Step 1 – Prerequisites
curl -o pre_upgrade_check.sh …[Solved] Kubernetes Namespace stuck in Terminating state
If you have tried to delete a Kubernetes namespace, and it has been hanging in ‘deleting’ for hours on end, it’s likely that you have …
Read Article →[Solved] Error creating: pods “my-service-a-xxx” is forbidden: error looking up service account my-apps/my-service-a: serviceaccount “my-service-a” not found
So you’ve run a deployment and tried to check the pods and there’s nothing there!
kubectl get pods
Next step is to see what’s …
Read Article →[Solved] error: src refspec main does not match any
If you get the following error:
error: src refspec main does not match any
error: failed to push some refs to 'https://github.com/ao/xxx.git' …How to Force a Redeploy in Kubernetes
If you need to force a redeploy of a deployment in Kubernetes, then you can use the rollout feature.
You may have an image that has been updated, but …
Read Article →How to Restart a Deployment in Kubernetes
If you need to restart a deployment in Kubernetes, perhaps because you would like to force a cycle of pods, then you can do the following:
Step 1 – …
Read Article →How to push multiple Dockerfile apps to AWS ECR at the same time
I have a parent directory containing multiple sub-directories. Each of these child directories is a different application and contains a Dockerfile.
I …
Read Article →How to Create a Horizontal Pod Autoscaler in Kubernetes
If you could like to a create a Horizontal Pod Autoscaler (hpa) in Kubernetes, then you could run the following:
Step 1 – Create a Deployment
If you …
Read Article →How to Run a Load Generator on Kubernetes
If you would like to test hpa, Horizontal Pod Autoscaling, or throw some chaos at a specific deployment in Kubernetes, then you could run a Load …
How to Deploy a Metrics Server in Kubernetes
If you would like to deploy a Metrics Server in Kubernetes, then you first need to create a namespace for it to live it, followed by installing the …
Read Article →How to create an AWS EKS cluster using eksctl
eksctl dramatically simplifies the creation of AWS EKS clusters, by providing a simple command-line interface.
Step 1 – Define a Cluster YAML
You can …
Read Article →How to Dockerize a Flask App
If you have a Flask app that you would like packaged in a Docker container, then you can do the following. The steps outlined below will help you …
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