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Category: Kubernetes

[Cilium/Hubble] Research together and install cilium instead of using kube-proxy and other CNI providers.

Posted on March 21, 2022September 17, 2023 By nim No Comments on [Cilium/Hubble] Research together and install cilium instead of using kube-proxy and other CNI providers.
[Cilium/Hubble] Research together and install cilium instead of using kube-proxy and other CNI providers.

Mình biết đến Cilium là do các anh bên infra trong công ty đang có plan POC and migrate các workload sang dataplane-v2 on GKE. Và mình có thấy 1 dashboard cũng hay hay kiểu giống giống như kiali. 1) A few researching first. Điều đầu tiên trong link này dưới:https://cloud.google.com/kubernetes-engine/docs/how-to/dataplane-v2You can enable GKE Dataplane…

Read More “[Cilium/Hubble] Research together and install cilium instead of using kube-proxy and other CNI providers.” »

Kubernetes, Uncategorized

[Sidecar/Kubernestes] Inject sidecar into a Pod automatically

Posted on March 13, 2022March 25, 2022 By nim No Comments on [Sidecar/Kubernestes] Inject sidecar into a Pod automatically
[Sidecar/Kubernestes] Inject sidecar into a Pod automatically

Sau khi sài istio thì mình thấy cách mà istio thêm container “istio=proxy” vào trong 1 pod của 1 workload.Cái này khá là hay.Mình thử mò trên mạng sem có anh nào demo làm được việc này ko? Và bạn có thể tham khảo repo này!https://github.com/morvencao/kube-sidecar-injector Lý do mình chọn repo trên thì ảnh code…

Read More “[Sidecar/Kubernestes] Inject sidecar into a Pod automatically” »

Kubernetes, Uncategorized

[Ingress-nginx/GRPC] Let’s practice the load balancing with Ingress-Nginx and GRPC together

Posted on March 7, 2022March 8, 2022 By nim No Comments on [Ingress-nginx/GRPC] Let’s practice the load balancing with Ingress-Nginx and GRPC together
[Ingress-nginx/GRPC] Let’s practice the load balancing with Ingress-Nginx and GRPC together

Sau khi chém gió đông tây thì có nhiều anh em còn hoài nghi là liệu Ingress-Nginx có load balancing cho protocol là GRPC hay ko? Bữa trước chúng ta được 1 sư huynh chỉ code GPRC rồi giờ test thử sem sao!Public GRPC via ingress-nginx.Và tham khoả thêm bài nàyhttps://dev.to/techschoolguru/load-balancing-grpc-service-with-nginx-3fio Mô hình chúng ta…

Read More “[Ingress-nginx/GRPC] Let’s practice the load balancing with Ingress-Nginx and GRPC together” »

Ingress

[GRPC/Golang] Learning GRPC and Golang through the easy and actual lessons.

Posted on March 5, 2022April 28, 2022 By nim No Comments on [GRPC/Golang] Learning GRPC and Golang through the easy and actual lessons.
[GRPC/Golang]  Learning GRPC and Golang through the easy and actual lessons.

Hello anh em! Nếu là 1 system, 1 devops hoặc 1 devops trong hiện tại và cả tương lai.Bạn đang băn khoăn là mà muốn học 1 ngôn ngữ lập trình nào đó!I will suggest the Golang language to you! We will research such a power full protocol and trending which is GRPC. 1) Learning…

Read More “[GRPC/Golang] Learning GRPC and Golang through the easy and actual lessons.” »

Golang, Ingress

[Kubernetes] RBAC Demo

Posted on January 26, 2022February 13, 2022 By nim No Comments on [Kubernetes] RBAC Demo
[Kubernetes] RBAC Demo

Có thể anh em có làm việc với Kubernetes kha khá.Nhưng khi đúng đến RBAC thì có thể anh em của chúng ta sẽ khá lúng túng. Mình xin phép node lại mốt số thứ. Ảnh trên thì bạn sẽ thấy Ông John này sẽ có quyền tác động lên namespace: FINANCE.John sẽ thêm xoá,…

Read More “[Kubernetes] RBAC Demo” »

Kubernetes, Kubernetes & Container

[code/k8s] Lost or not found file inside the container on k8s

Posted on November 30, 2021February 13, 2022 By nim No Comments on [code/k8s] Lost or not found file inside the container on k8s
[code/k8s] Lost or not found file inside the container on k8s

Một hôm dev báo: “Bạn ơi sao mình build và deploy lên k8s mà mình chả thấy file config.yaml đâu nhỉ? Mình đã copy hết code vào image rồi mà?????????” Chúng ta hỏi file đó ở folder nào?Sau khi có được folder mà họ bảo mất file. Chúng ta cần kiểm tra có mount volume…

Read More “[code/k8s] Lost or not found file inside the container on k8s” »

Kubernetes, Kubernetes & Container

[ingress-nginx] Error=”ingress does not contain a valid IngressClass”, After upgrade ingress-nginx(helm 4.x.x, ingress-nginx/controller:v1.1.0)

Posted on November 26, 2021June 8, 2022 By nim No Comments on [ingress-nginx] Error=”ingress does not contain a valid IngressClass”, After upgrade ingress-nginx(helm 4.x.x, ingress-nginx/controller:v1.1.0)
[ingress-nginx] Error=”ingress does not contain a valid IngressClass”, After upgrade ingress-nginx(helm 4.x.x, ingress-nginx/controller:v1.1.0)

Sau khi mình upgrade helm chart cho ingress-nginx thì ôi thôi.Mấy link ingress-chết ngắt. Fix valid IngressClass Rất cảm ơn anh Tâyhttps://forum.linuxfoundation.org/discussion/859965/exercise-7-nginx-update-requires-change-to-yaml theo như anh mô tạ có a breaking changehttps://github.com/kubernetes/ingress-nginx/releases/tag/controller-v1.0.0 If you miss the ingressclass the controller gives you: “Ignoring ingress because of error while validating ingress class” ingress=”default/ingress-test” error=”ingress does not contain a…

Read More “[ingress-nginx] Error=”ingress does not contain a valid IngressClass”, After upgrade ingress-nginx(helm 4.x.x, ingress-nginx/controller:v1.1.0)” »

Ingress

[HPA/Kubernetes] Scale Up As Usual, Scale Down Very Gradually – behavior in HPA K8s

Posted on November 25, 2021August 27, 2024 By nim No Comments on [HPA/Kubernetes] Scale Up As Usual, Scale Down Very Gradually – behavior in HPA K8s
[HPA/Kubernetes] Scale Up As Usual, Scale Down Very Gradually – behavior in HPA K8s

1) Overview. Link tham khảo luôn: https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/https://www.kloia.com/blog/advanced-hpa-in-kuberneteshttps://github.com/kubernetes/enhancements/blob/master/keps/sig-autoscaling/853-configurable-hpa-scale-velocity/README.md#introducing–option the “behavior” field with 1.18, v2beta2 API 1.1) Scaled up and down erratically: Thường thì HPA chúng ta sẽ đặt trên.Tóm lại nếu cpu mà vượt quá 80% request thì scale cái ào lên 15 pod. Nhưng với workload mà thay đổi liên tục CPU thì bạn sẽ thấy chart scale…

Read More “[HPA/Kubernetes] Scale Up As Usual, Scale Down Very Gradually – behavior in HPA K8s” »

Kubernetes, Kubernetes & Container

[GRPC/Ingress-Nginx] Add annotation for ingress-nginx to work GRPC

Posted on November 23, 2021March 7, 2022 By nim No Comments on [GRPC/Ingress-Nginx] Add annotation for ingress-nginx to work GRPC
[GRPC/Ingress-Nginx] Add annotation for ingress-nginx to work GRPC

nginx.ingress.kubernetes.io/backend-protocol: “GRPC” Links: https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/ Tue 30 Nov 2021: Mình thấy được 1 số issues: https://github.com/kubernetes/ingress-nginx/issues/6313 https://github.com/kubernetes/ingress-nginx/issues/5886 https://github.com/kubernetes/ingress-nginx/issues/4622#issuecomment-555571199 Như ingress-nginx không chơi với grpc với port 80

Ingress

[Kubernetes] How to delete POD is Terminating and very stubborn

Posted on November 7, 2021February 13, 2022 By nim No Comments on [Kubernetes] How to delete POD is Terminating and very stubborn
[Kubernetes] How to delete POD is Terminating and very stubborn

Bạn xoá mãi mà pod vẫn Terminating https://stackoverflow.com/questions/35453792/pods-stuck-in-terminating-status

Kubernetes, Kubernetes & Container

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