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Category: Kubernetes & Container

For the love of god, stop using CPU limits on Kubernetes

Posted on April 22, 2023 By nim No Comments on For the love of god, stop using CPU limits on Kubernetes
For the love of god, stop using CPU limits on Kubernetes

Best practices for CPU limits and requests on Kubernetes Lets summarize: Tim Hockin (one of the original Kubernetes maintainers at Google) has recommended the same for years. What about memory limits and requests? Everything in this post is about CPU and not memory. Memory is different because it is non-compressible – once you give memory you can’t…

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Kubernetes

Policies as Code in Kubernetes using jsPolicy

Posted on April 7, 2023April 7, 2023 By nim No Comments on Policies as Code in Kubernetes using jsPolicy
Policies as Code in Kubernetes using jsPolicy

refer: https://medium.com/nerd-for-tech/policies-as-code-in-kubernetes-using-jspolicy-8d358d064bfd DevSecops in Kubernetes using jsPolicy Kubernetes clusters are now everywhere. To run an ML Model you need a Kubernetes cluster, you want to run Data analytics you need a Kubernetes cluster, to deploy your frontend application, backend application, or any type of application you’d need a Kubernetes cluster. But is your cluster secured?…

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Kubernetes, Uncategorized

When K8s pods are stuck mounting large volumes

Posted on April 7, 2023 By nim No Comments on When K8s pods are stuck mounting large volumes
When K8s pods are stuck mounting large volumes

refer:https://blog.devgenius.io/when-k8s-pods-are-stuck-mounting-large-volumes-2915e6656cb8 Recently we ran into the following problem with our Loki deployment on AWS/EKS. On every deployment or restart of a Loki Pod, mounting the persistent volume took longer and longer. It started with a few minutes delay and ended up with nearly 25 minutes on our production cluster. Having no solution for this we…

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Pod

[Kong Gateway] WebSocket connection failed

Posted on March 26, 2023 By nim No Comments on [Kong Gateway] WebSocket connection failed
[Kong Gateway] WebSocket connection failed

WebSocket connection to ‘wss://k8s.nimtechnology.com/v3/subscribe?sockId=1’ failed:

Kong Gateway

[Datadog] Using DataDog to monitor all services on kubernetes

Posted on March 19, 2023April 25, 2023 By nim No Comments on [Datadog] Using DataDog to monitor all services on kubernetes
[Datadog] Using DataDog to monitor all services on kubernetes

Nếu công ty của bạn giàu và yêu cầu bạn phải sử dụng datadog thì Let’s do it. 1) Install DataDog on Kubernetes. Install DataDog via helm. Value file: Vì để datadog chất nhận data của bạn gửi lên datadog.thì apiKey là thử quan trong nhất. Và các bạn có thể tham khảo full value…

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DataDog, Kubernetes & Container

[Metrics Server] Failed to make webhook authorizer request: the server could not find the requested resource

Posted on March 17, 2023March 17, 2023 By nim No Comments on [Metrics Server] Failed to make webhook authorizer request: the server could not find the requested resource
[Metrics Server] Failed to make webhook authorizer request: the server could not find the requested resource

Sau khi upgrade k8s lên version 1.23 thì mình bắt đầu gặp lỗi trong HPA không mấy được cpu utilization Không lấy được memory utilization Trong log của con metrics-server trong namespace: kube-sysem How to fix the issue. Apply version mới nhất của metrics-server.https://github.com/kubernetes-sigs/metrics-server/releases

Kubernetes

[kubernetes/client-go] Go clients for talking to a kubernetes cluster.

Posted on March 3, 2023April 28, 2023 By nim No Comments on [kubernetes/client-go] Go clients for talking to a kubernetes cluster.
[kubernetes/client-go] Go clients for talking to a kubernetes cluster.

Nếu Sếp bảo bạn giờ anh muốn em code 1 script restart pod trên k8s khi nó bị freeze.Còn làm sao biết là pod đó bị freeze thì call vào 1 enpoint. Chà viêt Script hả ta. No No em code GO. Bạn có thể tham khảo Đây là code của anh trai: Code của…

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Golang, Kubernetes

[Metallb] Create LoadBalancer Service on K8S (on-premise) so easily

Posted on February 20, 2023March 20, 2023 By nim No Comments on [Metallb] Create LoadBalancer Service on K8S (on-premise) so easily
[Metallb] Create LoadBalancer Service on K8S (on-premise) so easily

Hiện tại phiên bản v0.13.x có 1 breakchange, but cũng rất dễ dàng setup. https://metallb.universe.tf/ Đây là các config mẫu.Bạn cần chọn ra 1 range IP cho loadbalancer.

Ingress, Kubernetes, MetalLB

[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

[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…

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Helm Chart, Kubernetes

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