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Author: nim

[ingress-nginx] ingress /contains invalid path

Posted on February 15, 2023February 15, 2023 By nim No Comments on [ingress-nginx] ingress /contains invalid path
[ingress-nginx] ingress /contains invalid path

Vừa qua mình gặp mội lỗi trên ingress nginx khi tạo ingress cho rancherkhi vào trong thì bị 404 và log trong ingress controller như dưới mình có đọc bài này:https://stackoverflow.com/questions/64946195/invalid-value-for-nginx-path

Ingress

[Samba] Looking into Locks and Oplocks in Samba-Server

Posted on February 10, 2023February 10, 2023 By nim No Comments on [Samba] Looking into Locks and Oplocks in Samba-Server
[Samba] Looking into Locks and Oplocks in Samba-Server

Tôi đang copy từ này này:https://www.oreilly.com/openbook/samba/book/ch05_05.html 5.5 Locks and Oplocks Concurrent writes to a single file are not desirable in any operating system. To prevent this, most operating systems use locks to guarantee that only one process can write to a file at a time. Operating systems traditionally lock entire files, although newer ones allow a range…

Read More “[Samba] Looking into Locks and Oplocks in Samba-Server” »

BareMetal

[Helmify] CLI that creates Helm charts from Kubernetes yamls.

Posted on February 8, 2023March 20, 2023 By nim No Comments on [Helmify] CLI that creates Helm charts from Kubernetes yamls.
[Helmify] CLI that creates Helm charts from Kubernetes yamls.

Helmify là một công cụ mã nguồn mở dùng để convert các file YAML thành chart Helm cho Kubernetes. Nó hỗ trợ việc quản lý các file YAML trong môi trường phân tán và automation trong quá trình setting up và phát triển. Helmify cũng cho phép anh em dễ dàng chỉnh sửa các file…

Read More “[Helmify] CLI that creates Helm charts from Kubernetes yamls.” »

Helm Chart, Kubernetes

[Linux] How to Check Disk Performance (IOPS and Latency) in Linux?

Posted on February 8, 2023July 25, 2023 By nim No Comments on [Linux] How to Check Disk Performance (IOPS and Latency) in Linux?
[Linux] How to Check Disk Performance (IOPS and Latency) in Linux?

Mình đã hỏi chat GPT và nó chỉ mình như sau: 1. Monitor I/O Performance Using ‘iostat’ Command: The first and most straightforward way to check disk performance in Linux is to use the ‘iostat’ utility to monitor I/O performance. ‘iostat’ can be used to monitor the I/O statistics of both CPUs and storage devices…

Read More “[Linux] How to Check Disk Performance (IOPS and Latency) in Linux?” »

Kubernetes & Container

[Karpenter] Using Karpenter instead of Autoscaling Group.

Posted on February 6, 2023 By nim No Comments on [Karpenter] Using Karpenter instead of Autoscaling Group.
[Karpenter] Using Karpenter instead of Autoscaling Group.

Refence Links:https://makendran.hashnode.dev/just-in-time-worker-nodes-with-karpenter

AWS - Amazon Web Service

[Sonarqube] Install Sonarqube on Kubernetes and integrate with GitHub Action.

Posted on February 5, 2023March 12, 2024 By nim No Comments on [Sonarqube] Install Sonarqube on Kubernetes and integrate with GitHub Action.
[Sonarqube] Install Sonarqube on Kubernetes and integrate with GitHub Action.

1) Installing Sonarqube on Kubernetes To install the chart: Helm values: Nếu bạn cần tạo ingress cho Sonarqube. 2) Integrate GitHub Action with Sonarqube. 2.1) Create a Token on Sonarqube 2.2) Create a project on Sonarqube. 2.3) Set up GitHub Action. Nếu bạn chưa quen với github action thì có thể tham khảo:https://nimtechnology.com/2022/12/21/github-action-lets-use-github-action-to-build-and-push-the-docker-image-to-the-docker-hub/ tiếp đến…

Read More “[Sonarqube] Install Sonarqube on Kubernetes and integrate with GitHub Action.” »

Kubernetes & Container

[Golang] Create multiple CRON functions by looping through a list

Posted on February 4, 2023 By nim No Comments on [Golang] Create multiple CRON functions by looping through a list
[Golang] Create multiple CRON functions by looping through a list

Gần dây mình có tình viết 1 scheduler bằng Golang.và mình định sử dụng gopkg.in/robfig/cron.v3 khi đó thì bạn sẽ thấy là dụ sài vòng for nhưng kết quả điều giống nhau. Nhưng mình mong muốn là như thế này: Vậy fix sao: https://stackoverflow.com/questions/57095167/how-do-i-create-multiple-cron-function-by-looping-through-a-list Problem in your code is equivalent to the one described here:…

Read More “[Golang] Create multiple CRON functions by looping through a list” »

Golang

[AWS] Setup Schedule Action for Auto Scaling Group – Saving Cost is based on ASG

Posted on February 3, 2023February 7, 2023 By nim No Comments on [AWS] Setup Schedule Action for Auto Scaling Group – Saving Cost is based on ASG
[AWS] Setup Schedule Action for Auto Scaling Group – Saving Cost is based on ASG

Khi các bạn sử dụng Auto Scaling của AWS thì bạn sẽ thấy có 1 cái tiện là hệ thống của bạn sẽ tự động tăng giảm số node để Nhưng với các môi trường dev và staging nếu developer đi ngủ và bạn cũng muốn cluster k8s của bạn đi ngủ thì làm như…

Read More “[AWS] Setup Schedule Action for Auto Scaling Group – Saving Cost is based on ASG” »

AWS - Amazon Web Service

[Goland/Echo Framework/For loop] Return the results twice when using the echo framework and for loop on Goland

Posted on February 3, 2023November 6, 2023 By nim No Comments on [Goland/Echo Framework/For loop] Return the results twice when using the echo framework and for loop on Goland
[Goland/Echo Framework/For loop] Return the results twice when using the echo framework and for loop on Goland

Lâu lâu coding lại golang thì gặp lỗi này. Mình chạy golang trên Goland. Mình sử dụng vòng for trong echo framework.thì kết quả trả về lúc nào cũng bị double. Run with elevated privileges. Bạn có thể lấy key Goland ở đây:https://3.jetbra.in/(Nếu bạn giàu thì mua key đi nè)

Golang

[Smartctl] Instruction check the health disk of Raspberry.

Posted on January 16, 2023January 16, 2023 By nim No Comments on [Smartctl] Instruction check the health disk of Raspberry.
[Smartctl] Instruction check the health disk of Raspberry.

https://gist.github.com/meinside/0538087cc60a2f0654bb for testing external HDD with smartctl, install smartmontools $ sudo apt-get install smartmontools start test, $ sudo smartctl -t short -d sat /dev/sda $ sudo smartctl -t long -d sat /dev/sda -T permissive then it will say so wait for it… After its completion, $ sudo smartctl -l selftest -d sat /dev/sda -T permissive…

Read More “[Smartctl] Instruction check the health disk of Raspberry.” »

BareMetal

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