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COPPER Nguyen

16 posts
Sync Secret from Vault to K8S using External Secrets Operator
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Sync Secret from Vault to K8S using External Secrets Operator

When doing work on many micro services, i have to find a way to manage environment variable for them, previously i used AWS Secret Manager but when working on multiple environment with many account, t
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Get a free TLS certificate with acme.sh
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Get a free TLS certificate with acme.sh

When i'm using Azure Cloud, they do not provide a free certificate that can be used with their service unlike AWS, so we need to find a way to get a free TLS certificate.Luckily when i go around the i
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Self-managed K8S cluster for development environment using AWS EC2
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Self-managed K8S cluster for development environment using AWS EC2

Use Amazon Elastic Kubernetes Service for development environment is not a good choice if the customer or we have not enough money. The workload for development environment is usually small so we can
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Create a Kafka cluster for development with Docker Compose
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Create a Kafka cluster for development with Docker Compose

This article assume that you have basic knowledge about Kafka, and Docker Compose. For development environment, there is no strict requirement about high availability and durability, we will try to ma
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Blue/Green deployment with HA Proxy
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Blue/Green deployment with HA Proxy

First, let finding what is blue/green deployment. A blue/green deployment is a deployment strategy in which you create two separate, but identical environments. One environment (blue) is running the c
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How to grant enough permission for developer on Bastion Host
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How to grant enough permission for developer on Bastion Host

In production environment, the access is private by default, developers usually have not permission to access to the database, search engine, or the running application. In case to debug application,
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