Author: nim

[K8s/ActiveMQ] Install ActiveMQ in K8s

March 26, 2025March 26, 2025 nim No Comments

Install ActiveMQ Artemis on Kubernetes. Bạn tham khảo helm chart sau:https://artifacthub.io/packages/helm/activemq-helm-chart/active-mq Add repository Install chart Edit Heap Size in ActiveMQ Container https://activemq.apache.org/components/artemis/documentation/latest/perf-tuning.html?q=#tuning-the-vm When Artemis is under heavy load, it creates and destroys many objects quickly. Without enough memory, this leads to frequent garbage collection, causing pauses and performance degradation. Proper memory settings ensure smooth operation even during peak loads….

Kubernetes

[Helm/Golang] Install Helm chart on Kubernetes using Go.

March 13, 2025September 3, 2025 nim No Comments

Basic level Bình thường khi bạn sự dụng helm command để có thể install Keda hoặc là Argocd lên k8s bằng helm chart.Giờ nếu bạn cần code 1 tool bằng golang để làm luôn chuyển đó thì như thể nào nhỉ? Bạn có thể thao khảo các lệnh sau:https://github.com/helm/helm-www/tree/main/sdkexamples Chúng ta sẽ cúng tìm hiểu…

Golang, Helm Chart

Setup Environment Variable for Terminal of VScode

March 12, 2025March 12, 2025 nim No Comments

Bạn vào phần settings và gõ: Integrated: Env Vì mình đăng sài windows và mình termimal Powershell.Nên mình edit settings.json của windows.

BareMetal

[OpenVPN] renew certificate for OpenVPN

March 10, 2025March 10, 2025 nim No Comments

creator: https://github.com/BananaSorcery I. Issue II. Solution DO NOT RUN ./easyrsa init-pki in any case if there is a problem. This command will re-initialize OpenVPN server and remove all existing users data. 2. Check the Common Name (CN) of the current OpenVPN server. In my case, my server name is server_jgJkjLf9OGIe5v1Z 3. Go to easy-rsa folder…

BareMetal

EKS Crossplane

March 10, 2025March 10, 2025 nim No Comments

Creator: https://github.com/trungvo11 Crossplane is an open-source project in the Cloud Native Computing Foundation (CNCF) that transforms your Kubernetes cluster into a universal control plane. It enables platform teams to assemble infrastructure from multiple vendors and expose higher-level self-service APIs for application teams to consume, without writing any code. Crossplane extends your Kubernetes cluster to support…

[Golang / EKS] Accessing AWS EKS with Go: A Comprehensive Guide to Interacting with Kubernetes APIs

March 7, 2025March 7, 2025 nim No Comments

Mình đang câng viết 1 tool golang và sẽ access vào EKS để call tiếp các API của K8S Chúng ta đi sơ qua 1 chút về Đây là kubeconfig mà bạn hay sử dụng để access vào eks cluster. Bạn có thể thấy khi access vào eks cluster thì kubeclt sẽ cần gõ một…

AWS - Amazon Web Service, Golang, Kubernetes

How to aws cli authenticate with AWS

February 18, 2025February 18, 2025 nim No Comments

To authenticate with AWS using the AWS Command Line Interface (CLI), you have several methods available, depending on your needs and configuration. Below are the primary methods for authentication: 1. Using IAM User Credentials This is a common method for individuals or applications that need direct access to AWS services. Steps: 2. Using IAM Identity…

AWS - Amazon Web Service

[EKS/ S3 Mount Point] Create a Persistent Volume on EKS using an S3 Bucket.

February 8, 2025February 8, 2025 nim No Comments

refer to install:https://github.com/awslabs/mountpoint-s3/blob/main/doc/CONFIGURATION.md Mountpoint for Amazon S3 is optimized for applications that need high read throughput to large objects, potentially from many clients at once, and to write new objects sequentially from a single client at a time.==> S3 Mountpoint này sẽ hỗ trợ cho việc ghi file mới và đọc file từ nhiều client…

AWS - Amazon Web Service

[CoreDNS] How to improve the Coredns performance.

February 4, 2025September 3, 2025 nim No Comments

NodeLocal DNSCache NodeLocal DNSCache enhances Kubernetes cluster DNS performance by deploying a DNS caching agent on each node as a DaemonSet. This setup allows Pods to query a local DNS cache on the same node, reducing latency and avoiding potential bottlenecks associated with centralized DNS services. PILLAR__DNS__DOMAIN is “cluster.local” by default.PILLAR__LOCAL__DNS is the local listen IP…

AWS - Amazon Web Service, Kubernetes

[Cilium] Cilium Pods crash when upgraded to K8S 1.30

January 16, 2025January 16, 2025 nim No Comments

Khi Upgrade K8s lên 1.30 khả năng cao bạn sẽ gặp lỗi nàyCilium pod crashes cause the mount-group container to constantly restart. trong log có nhả 1 lỗi: Nếu bạn sử dụng helm để install cilium thì add thêm pod annotations: Nó sẽ add thêm SecurityContext: add thêm annotations: Refer to:https://hackmd.io/@7vxmAdNPTmmlYGSRMuvbmw/H1cxr_yGkg

Kubernetes