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119 results tagged k8s x
  • thumbnail
    Crossplane project on LinkedIn: KubeCon Europe 2024: Watch these 8+ Crossplane-y talks
    April 22, 2024 at 9:21:06 PM GMT+2 * - permalink - archive.org - https://www.linkedin.com/posts/crossplane_kubecon-europe-2024-watch-these-8-crossplane-y-activity-7188201362034233349-i3d7
    crossplane k8s
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    robusta-dev/krr: Prometheus-based Kubernetes Resource Recommendations
    February 7, 2024 at 10:29:32 AM GMT+1 - permalink - archive.org - https://github.com/robusta-dev/krr?tab=readme-ov-file#usage
    cpu k8s memory report
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    GitHub - derailed/popeye: 👀 A Kubernetes cluster resource sanitizer
    May 16, 2023 at 8:58:41 AM GMT+2 - permalink - archive.org - https://github.com/derailed/popeye
    audit k8s
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    GitHub - kubescape/kubescape: Kubescape is an open-source Kubernetes security platform for your IDE, CI/CD pipelines, and clusters. It includes risk analysis, security, compliance, and misconfiguration scanning, saving Kubernetes users and administrators precious time, effort, and resources.
    April 26, 2023 at 8:08:13 PM GMT+2 - permalink - archive.org - https://github.com/kubescape/kubescape
    k8s security tools
  • thumbnail
    Right-size your Kubernetes Applications Using Open Source Goldilocks for Cost Optimization | AWS Open Source Blog
    April 9, 2023 at 6:31:35 PM GMT+2 - permalink - archive.org - https://aws.amazon.com/fr/blogs/opensource/right-size-your-kubernetes-applications-using-open-source-goldilocks-for-cost-optimization/
    eks k8s
  • The Kubernetes Discovery Cache: Blessing and Curse · Jonny Langefeld

    via martinho

    I had no idea such cache exists, very interesting!

    March 9, 2023 at 4:48:54 PM GMT+1 - permalink - archive.org - https://jonnylangefeld.com/blog/the-kubernetes-discovery-cache-blessing-and-curse
    cache crd k8s
  • Note: psp

    Hello,

    • What is changing?
      PodSecurityPolicy (PSP) was deprecated [1] in Kubernetes version 1.21 and has been removed in Kubernetes version 1.25 [2]. If you are using PSPs in your cluster, then you must migrate from PSP to the built-in Kubernetes Pod Security Standards (PSS) or to a policy as code solution before upgrading your cluster to version 1.25 to avoid interruption to your workloads.

    • What actions can customers take?
      PSP resources were used to specify a set of requirements that pods had to meet before they could be created. Since PSPs have been removed in Kubernetes version 1.25, you must replace those security controls. Two solutions can fill this need:

    1) Kubernetes Pod Security Standards (PSS)
    2) Policy-as-code solutions from the Kubernetes ecosystem

    In response to the PSP deprecation and the ongoing need to control pod security out-of-the-box, the Kubernetes community created a built-in solution with PSS [3] and Pod Security Admission (PSA) [4]. The PSA webhook implements the controls defined in the PSS. To review best practices for migrating PSPs to the built-in Pod Security Standards, see references [5] and [6].

    Policy-as-code solutions provide guardrails to guide cluster users, and prevent unwanted behaviors, through prescribed and automated controls. Policy-as-code solutions typically use Kubernetes Dynamic Admission Controllers to intercept the Kubernetes API server request flow, via a webhook call, and mutate and validate request payloads, based on policies written and stored as code. There are several open source policy-as-code solutions available for Kubernetes. To review best practices for migrating PSPs to a policy-as-code solution, see reference [7].

    You can run the following command to view the PSPs in your cluster: kubectl get psp. If you see the eks.privileged PSP in your cluster, it will be automatically migrated to PSS by Amazon EKS. No action is needed on your part.

    To summarize, if you are using PSP in your cluster, then you must migrate from PSP to the built-in Kubernetes PSS or to a policy as code solution before upgrading your cluster to version 1.25 to avoid interruptions to your workloads. EKS offers best practices for pod security and guidance for implementing pod security standards [8]. You can find details on PSP Migration in EKS documentation [1].

    If you have any questions or concerns, please reach out to AWS Support [9].

    [1] https://docs.aws.amazon.com/eks/latest/userguide/pod-security-policy-removal-faq.html
    [2] https://docs.aws.amazon.com/eks/latest/userguide/kubernetes-versions.html#kubernetes-release-calendar
    [3] https://kubernetes.io/docs/concepts/security/pod-security-standards/
    [4] https://kubernetes.io/docs/concepts/security/pod-security-admission/
    [5] https://aws.github.io/aws-eks-best-practices/security/docs/pods/#pod-security-standards-pss-and-pod-security-admission-psa
    [6] https://kubernetes.io/docs/tasks/configure-pod-container/migrate-from-psp/
    [7] https://aws.github.io/aws-eks-best-practices/security/docs/pods/#policy-as-code-pac
    [8] https://aws.amazon.com/blogs/containers/implementing-pod-security-standards-in-amazon-eks/
    [9] https://aws.amazon.com/support

    February 17, 2023 at 1:47:31 PM GMT+1 - permalink - archive.org - https://links.infomee.fr/?KhDwSg
    k8s migration psp
  • Note: psp dig

    https://kubernetes.io/blog/2021/04/06/podsecuritypolicy-deprecation-past-present-and-future/

    https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.26/#securitycontext-v1-core
    https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.26/#podsecuritycontext-v1-core

    https://github.com/open-policy-agent/gatekeeper/
    https://www.openpolicyagent.org/docs/latest/kubernetes-tutorial/

    January 9, 2023 at 3:38:19 PM GMT+1 - permalink - archive.org - https://links.infomee.fr/?aSe4tA
    k8s opa psp
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    (6) Karpenter for Kubernetes | Karpenter vs Cluster Autoscaler - YouTube

    Karpenter vs Cluster Autoscaler very well explained in 7minutes

    December 21, 2022 at 8:59:44 AM GMT+1 * - permalink - archive.org - https://www.youtube.com/watch?v=FIBc8GkjFU0
    autoscaler k8s karpenter
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    awslabs/eks-node-viewer: EKS Node Viewer
    December 21, 2022 at 8:20:05 AM GMT+1 * - permalink - archive.org - https://github.com/awslabs/eks-node-viewer
    cli eks k8s node tool
  • Read-Only Access to Kubernetes Cluster | by Rob Schoening | Medium
    December 9, 2022 at 9:52:19 AM GMT+1 - permalink - archive.org - https://medium.com/@rschoening/read-only-access-to-kubernetes-cluster-fcf84670b698
    clusterrole k8s rbac readonly ro
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    GitHub - Praqma/helmsman: Helm Charts as Code

    Alternative to helmfile

    October 24, 2022 at 10:58:11 AM GMT+2 - permalink - archive.org - https://github.com/Praqma/helmsman
    helm k8s
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    GitHub - doitintl/kube-no-trouble: Easily check your clusters for use of deprecated APIs
    October 24, 2022 at 10:48:34 AM GMT+2 * - permalink - archive.org - https://github.com/doitintl/kube-no-trouble
    audit k8s tool upgrade
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    https://github.com/nicolaka/netshoot
    October 8, 2022 at 2:19:27 PM GMT+2 * - permalink - archive.org - https://github.com/nicolaka/netshoot
    debug k8s kubernetes tools
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    For the love of god, stop using CPU limits on Kubernetes
    September 6, 2022 at 11:36:38 AM GMT+2 - permalink - archive.org - https://home.robusta.dev/blog/stop-using-cpu-limits/
    cpu k8s limit
  • OPA Gatekeeper: Policy and Governance for Kubernetes | Kubernetes
    August 19, 2022 at 9:53:45 AM GMT+2 - permalink - archive.org - https://kubernetes.io/blog/2019/08/06/opa-gatekeeper-policy-and-governance-for-kubernetes/
    gatekeeper k8s opa
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    Using Gatekeeper as a drop-in Pod Security Policy replacement in Amazon EKS | Containers
    • https://open-policy-agent.github.io/gatekeeper/website/docs/
    August 9, 2022 at 9:53:35 AM GMT+2 - permalink - archive.org - https://aws.amazon.com/blogs/containers/using-gatekeeper-as-a-drop-in-pod-security-policy-replacement-in-amazon-eks/
    gatekeeper k8s psp
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    Break Down Kubernetes Server-Side Apply | by Stefanie Lai | The Startup | Medium

    Server Side apply VS Client Side apply

    via Edwin

    June 17, 2022 at 2:00:57 PM GMT+2 - permalink - archive.org - https://medium.com/swlh/break-down-kubernetes-server-side-apply-5d59f6a14e26
    csa k8s ssa
  • Welcome to Operator framework
    • kubebuilder
    • https://github.com/operator-framework/operator-sdk/issues/1758
    June 11, 2022 at 8:21:35 PM GMT+2 - permalink - archive.org - https://operatorframework.io/
    framework k8s operator
  • Crossplane

    Un Operator qui :

    • crée des CRDs pour chaque resource AWS existante (s3, ec2, rds.....)
    • crée les controler associés

    Du coup on peut créer des resources AWS avec kube (on peut se passer de terraform, on peut utiliser une CI/CD adaptée à déployer dans Kube)

    June 1, 2022 at 4:35:41 PM GMT+2 * - permalink - archive.org - https://crossplane.io/
    crd k8s terraform
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    GitHub - FairwindsOps/nova: Find outdated or deprecated Helm charts running in your cluster.
    April 17, 2022 at 9:12:36 AM GMT+2 - permalink - archive.org - https://github.com/FairwindsOps/nova
    audit chart helm k8s
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    https://github.com/stern/stern
    March 22, 2022 at 12:54:25 PM GMT+1 - permalink - archive.org - https://github.com/stern/stern
    k8s log
  • Karpenter - EKS Best Practices Guides
    March 19, 2022 at 2:35:19 PM GMT+1 - permalink - archive.org - https://aws.github.io/aws-eks-best-practices/karpenter/
    alternative autoscaler k8s
  • https://itnext.io/kubernetes-journey-cka-ckad-exam-tips-ff73e4672833
    March 17, 2022 at 10:32:50 AM GMT+1 - permalink - archive.org - https://itnext.io/kubernetes-journey-cka-ckad-exam-tips-ff73e4672833
    cka k8s
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    GitHub - armosec/kubescape: Kubescape is a K8s open-source tool providing a multi-cloud K8s single pane of glass, including risk analysis, security compliance, RBAC visualizer and image vulnerabilities scanning.
    March 7, 2022 at 3:48:55 PM GMT+1 - permalink - archive.org - https://github.com/armosec/kubescape
    k8s security
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    GitHub - stefanprodan/podinfo: Go microservice template for Kubernetes

    via edwin

    February 16, 2022 at 4:28:42 PM GMT+1 - permalink - archive.org - https://github.com/stefanprodan/podinfo
    echo info k8s pod
  • Note: kube cpu throttling

    https://medium.com/omio-engineering/cpu-limits-and-aggressive-throttling-in-kubernetes-c5b20bd8a718
    https://blog.turbonomic.com/kubernetes-cpu-throttling-the-silent-killer-of-response-time-and-what-to-do-about-it
    https://erickhun.com/posts/kubernetes-faster-services-no-cpu-limits/
    https://engineering.indeedblog.com/blog/2019/12/unthrottled-fixing-cpu-limits-in-the-cloud/
    https://www.youtube.com/watch?v=UE7QX98-kO0

    February 15, 2022 at 4:18:02 PM GMT+1 - permalink - archive.org - https://links.infomee.fr/?Mg1LFQ
    cpu k8s throttling
  • Persistent Volumes | Kubernetes
    • https://kubernetes.io/docs/concepts/storage/dynamic-provisioning/
    February 10, 2022 at 2:11:21 PM GMT+1 - permalink - archive.org - https://kubernetes.io/docs/concepts/storage/persistent-volumes/#using
    dynamic k8s persistent volume
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    Préparer et réussir sa certification CKAD
    January 21, 2022 at 5:05:42 PM GMT+1 - permalink - archive.org - https://blog.ippon.fr/2021/04/21/certification-kubernetes-ckad/
    ckad k8s
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    GitHub - itaysk/kubectl-neat: Clean up Kubernetes yaml and json output to make it readable

    yaml

    January 18, 2022 at 6:58:57 PM GMT+1 * - permalink - archive.org - https://github.com/itaysk/kubectl-neat
    clean k8s kubectl pluginc
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    KEDA | Kubernetes Event-driven Autoscaling
    January 6, 2022 at 11:08:00 AM GMT+1 - permalink - archive.org - https://keda.sh/
    hpa k8s queue scale
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    https://learnk8s.io/kubernetes-instance-calculator
    September 14, 2021 at 7:08:04 PM GMT+2 - permalink - archive.org - https://learnk8s.io/kubernetes-instance-calculator
    calculator k8s
  • Operator pattern | Kubernetes

    Petit point vocabulaire : un "Operator" est un "controller" qui va surveiller des CRD (Custom Resource Definition) pour faire des actions
    Un Operator = 1 deployment = x Pods qui écoutent via l'API de Kube les events sur une CRD et va faire des actions en conséquence

    August 13, 2021 at 9:46:00 AM GMT+2 - permalink - archive.org - https://kubernetes.io/docs/concepts/extend-kubernetes/operator/
    k8s
  • Welcome to cert-manager | cert-manager
    May 11, 2021 at 8:21:44 AM GMT+2 - permalink - archive.org - https://cert-manager.io/docs/
    cert docker k8s letsencrypt tls
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    GitHub - sbstp/kubie: A more powerful alternative to kubectx and kubens
    March 21, 2021 at 12:57:34 PM GMT+1 - permalink - archive.org - https://github.com/sbstp/kubie
    k8s tools
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    GitHub - kubermatic/fubectl: Reduces repetitive interactions with kubectl
    March 21, 2021 at 12:56:07 PM GMT+1 - permalink - archive.org - https://github.com/kubermatic/fubectl
    k8s tools wrapper
  • cloudposse/eks-node-group/aws | Terraform Registry

    vs https://registry.terraform.io/modules/cloudposse/eks-workers/aws/latest

    cluster : https://registry.terraform.io/modules/cloudposse/eks-cluster/aws/latest

    March 2, 2021 at 3:19:39 PM GMT+1 * - permalink - archive.org - https://registry.terraform.io/modules/cloudposse/eks-node-group/aws/latest
    aws eks k8s terraform
  • Using Custom Plugin Indexes · Krew
    September 28, 2020 at 10:30:48 AM GMT+2 - permalink - archive.org - https://krew.sigs.k8s.io/docs/user-guide/custom-indexes/
    k8s plugins
  • Kubernetes clients and dashboards: a comparison - Yolan Vloeberghs and Pieter Vincken — Ordina JWorks Tech Blog
    September 21, 2020 at 10:13:45 AM GMT+2 - permalink - archive.org - https://ordina-jworks.github.io/cloud/2020/08/28/kubernetes-clients-comparison.html
    k8s
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    Introducing the AWS Controllers for Kubernetes (ACK) | Containers

    Gérer des resources aws avec un controller kube fourni par aws

    August 31, 2020 at 10:04:55 AM GMT+2 - permalink - archive.org - https://aws.amazon.com/blogs/containers/aws-controllers-for-kubernetes-ack/
    aws controller k8s
  • Share Process Namespace between Containers in a Pod | Kubernetes

    TIL

    August 31, 2020 at 9:58:32 AM GMT+2 - permalink - archive.org - https://kubernetes.io/docs/tasks/configure-pod-container/share-process-namespace/
    k8s
  • Home - Telepresence
    April 28, 2020 at 2:18:04 PM GMT+2 - permalink - archive.org - https://www.telepresence.io/
    dev k8s tools
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    GitHub - bonnefoa/kubectl-fzf: A fast kubectl autocompletion with fzf
    December 23, 2019 at 6:47:18 PM GMT+1 - permalink - archive.org - https://github.com/bonnefoa/kubectl-fzf
    fzf k8s
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    Game of PODs - Kubernetes | Kode Kloud
    December 10, 2019 at 9:50:11 PM GMT+1 - permalink - archive.org - https://kodekloud.com/p/game-of-pods
    got k8s
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    kubernetes-external-secrets/README.md at master · godaddy/kubernetes-external-secrets · GitHub
    December 7, 2019 at 4:57:37 PM GMT+1 - permalink - archive.org - https://github.com/godaddy/kubernetes-external-secrets/blob/master/README.md
    k8s secrets
  • Workflows & Pipelines | Argo
    November 26, 2019 at 3:17:48 PM GMT+1 - permalink - archive.org - https://argoproj.github.io/argo/
    k8s task
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    krew/README.md at master · kubernetes-sigs/krew · GitHub
    November 20, 2019 at 10:33:45 PM GMT+1 - permalink - archive.org - https://github.com/kubernetes-sigs/krew/blob/master/README.md
    k8s plugins
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    GitHub - ahmetb/kubectl-aliases: Programmatically generated handy kubectl aliases.
    November 20, 2019 at 10:30:52 PM GMT+1 - permalink - archive.org - https://github.com/ahmetb/kubectl-aliases
    alias k8s
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    k-rail/README.md at master · cruise-automation/k-rail · GitHub
    October 27, 2019 at 1:28:05 PM GMT+1 - permalink - archive.org - https://github.com/cruise-automation/k-rail/blob/master/README.md#viewing-policy-violations
    k8s
  • Writing a Kubernetes Operator in Python without frameworks and SDK

    simple example on how to write a kubernetes operator

    August 16, 2019 at 4:26:20 PM GMT+2 - permalink - archive.org - https://medium.com/flant-com/kubernetes-operator-in-python-451f2d2e33f3
    k8s operator python
  • wercker/stern: ⎈ Multi pod and container log tailing for Kubernetes
    June 7, 2019 at 8:21:23 AM GMT+2 - permalink - archive.org - https://github.com/wercker/stern
    k8s log
  • Velero
    May 21, 2019 at 2:36:27 PM GMT+2 - permalink - archive.org - https://velero.io/
    backup k8s
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    KubeContext/README.md at master · turkenh/KubeContext · GitHub
    May 18, 2019 at 10:14:43 PM GMT+2 - permalink - archive.org - https://github.com/turkenh/KubeContext/blob/master/README.md
    k8s mac
  • Kubernetes Operator FAQ – CloudARK – Medium
    May 17, 2019 at 10:13:18 PM GMT+2 - permalink - archive.org - https://medium.com/@cloudark/kubernetes-operator-faq-e018132c6ea2
    crd k8s operator
  • cni-ipvlan-vpc-k8s/README.md at master · lyft/cni-ipvlan-vpc-k8s · GitHub
    May 14, 2019 at 10:56:36 PM GMT+2 - permalink - archive.org - https://github.com/lyft/cni-ipvlan-vpc-k8s/blob/master/README.md
    aws cni k8s
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    GitHub - roboll/helmfile: Deploy Kubernetes Helm Charts
    April 26, 2019 at 5:02:54 PM GMT+2 - permalink - archive.org - https://github.com/roboll/helmfile
    helm k8s
  • Flagger | Flagger - Istio and App Mesh Progressive Delivery Kubernetes Operator
    April 26, 2019 at 5:02:01 PM GMT+2 - permalink - archive.org - https://flagger.app/
    istio k8s mesh
  • Tinder’s move to Kubernetes – Tinder Engineering – Medium
    April 17, 2019 at 10:01:50 PM GMT+2 - permalink - archive.org - https://medium.com/@tinder.engineering/tinders-move-to-kubernetes-cda2a6372f44
    k8s tinder
  • Kubernetes Liveness and Readiness Probes Revisited: How to Avoid Shooting Yourself in the Other Foot

    2/2

    April 4, 2019 at 1:53:19 PM GMT+2 - permalink - archive.org - https://blog.colinbreck.com/kubernetes-liveness-and-readiness-probes-revisited-how-to-avoid-shooting-yourself-in-the-other-foot/
    k8s liveness probe readiness
  • herbrandson/k8dash: Simple Kubernetes realtime dashboard and management
    April 3, 2019 at 4:22:31 PM GMT+2 - permalink - archive.org - https://github.com/herbrandson/k8dash
    dashboard k8s
  • Note: core dns

    Un cluster EKS est livré avec un Deployment pour core dns avec 2 replicas

    ça suffit pour commencer, mais avec beaucoup de pods qui tournent on a commencé à avoir des erreurs DNS

    On a passé le replicas à 5 et tout va mieux, plus d'erreurs

    https://github.com/kubernetes/kubernetes/issues/68321

    April 3, 2019 at 12:14:49 PM GMT+2 * - permalink - archive.org - https://links.infomee.fr/?5m2syA
    dns eks k8s
  • Note: Define requests and limits

    Tips :

    start with low request and high limits

    observe..

    increase request to request what needed in normal processing
    lower limits to... what your strategy is. It can be 10% more than request for example or the same than request if you want to be safe

    April 3, 2019 at 11:11:25 AM GMT+2 - permalink - archive.org - https://links.infomee.fr/?O-2Lkw
    k8s limit request resources
  • Introducing Kubebot: a Kubernetes bot for Slack – Harbur Cloud Solutions
    March 29, 2019 at 11:42:39 AM GMT+1 - permalink - archive.org - https://blog.harbur.io/introducing-kubebot-a-kubernetes-bot-for-slack-2da770fb95d9
    bot k8s
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    amazon-eks-ami/eni-max-pods.txt at master · awslabs/amazon-eks-ami

    max pods by ec2 instance type

    March 28, 2019 at 3:11:23 PM GMT+1 - permalink - archive.org - https://github.com/awslabs/amazon-eks-ami/blob/master/files/eni-max-pods.txt
    eks eni k8s pod
  • Note: Kubernetes monitoring

    Pas toujours simple de s'y retrouver :
    https://github.com/coreos/prometheus-operator
    https://github.com/coreos/prometheus-operator/tree/master/contrib/kube-prometheus

    La différence entre ces deux là est expliqué dans le README : https://github.com/coreos/prometheus-operator#prometheus-operator-vs-kube-prometheus

    Ce qu'il faut retenir, c'est que si l'on veut une solution end-to-end de monitoring de son cluster, il faut utiliser kube-prometheus qui installe le prometheus operator et plein d'autres choses. D'après le Readme de kube prometheus, le projet s'utilise comme une lib qui permet de générer des manifests yaml qu'on va ensuite apply.

    Le projet a aussi été packagé avec helm. Si on veut custom les manifests, ça a l'air plus facile à utiliser que le jsonnet de kube prometheus :
    https://github.com/helm/charts/tree/master/stable/prometheus-operator

    March 28, 2019 at 10:41:32 AM GMT+1 * - permalink - archive.org - https://links.infomee.fr/?z1yAkg
    k8s monitoring
  • Istio / What is Istio?
    March 27, 2019 at 9:14:23 PM GMT+1 - permalink - archive.org - https://istio.io/docs/concepts/what-is-istio/
    k8s
  • Keycloak
    March 27, 2019 at 9:02:30 PM GMT+1 - permalink - archive.org - https://www.keycloak.org/
    iam k8s
  • kiam/README.md at master · uswitch/kiam · GitHub

    Une alternative à kube2iam qui est apparemment plus secure

    March 27, 2019 at 8:46:01 PM GMT+1 * - permalink - archive.org - https://github.com/uswitch/kiam/blob/master/README.md
    iam k8s
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    GO et Kubernetes, les recettes du nouveau LeBonCoin
    March 26, 2019 at 1:49:32 PM GMT+1 - permalink - archive.org - https://www.lemagit.fr/etude/GO-et-Kubernetes-les-recettes-du-nouveau-LeBonCoin
    go k8s leboncoin
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    Installing kube2iam in AWS Kubernetes EKS Cluster | Carlos Sanchez's Weblog
    March 26, 2019 at 9:33:47 AM GMT+1 - permalink - archive.org - https://blog.csanchez.org/2018/11/14/installing-kube2iam-in-aws-kubernetes-eks-cluster/
    iam k8s
  • boz/kail: kubernetes log viewer

    un projet similaire à kubetail

    March 25, 2019 at 10:34:58 PM GMT+1 - permalink - archive.org - https://github.com/boz/kail
    k8s kubetail log tail
  • astefanutti/kubebox: ⎈❏ Terminal and Web console for Kubernetes

    à voir ce que ça donne comparé à k9s

    March 25, 2019 at 10:15:10 PM GMT+1 - permalink - archive.org - https://github.com/astefanutti/kubebox
    k8s
  • hjacobs/kube-ops-view: Kubernetes Operational View - read-only system dashboard for multiple K8s clusters

    Je l'avais perdu, je l'ai retrouvé

    March 25, 2019 at 10:14:09 PM GMT+1 - permalink - archive.org - https://github.com/hjacobs/kube-ops-view
    k8s monitoring
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    Removing spec.replicas of the Deployment resets replicas count to single replica · Issue #67135 · kubernetes/kubernetes

    Si on a créé un Deployment avec un apply -f en spécifiant le champs replicas et qu'on décide d'enlever ce champs (pour ne plus qu'il soit géré de manière statique mais plutot dynamique avec un HPA par exemple)

    Il faut faire attention car le comportement par défaut va définir replicas à 1

    Pour éviter ça, avant de apply le Deployment sans le champs replicas, il faut faire un :

    kubectl apply edit-last-applied deployment my-deployment

    Et supprimer le champs replicas

    March 25, 2019 at 5:38:01 PM GMT+1 - permalink - archive.org - https://github.com/kubernetes/kubernetes/issues/67135
    hpa k8s replicas
  • Horizontal Pod Autoscaler Walkthrough - Kubernetes

    Pour que ça marche bien il faut que ses CPU requests soient cohérents

    March 25, 2019 at 5:02:12 PM GMT+1 - permalink - archive.org - https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale-walkthrough/
    autoscaling k8s
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    kubernetes/autoscaler: Autoscaling components for Kubernetes

    Lorsque le HPA (horizontal pod autoscaler) démarre trop de pods, ces pods vont être en pending. Il faut plus de nodes pour les faire tourner.

    C'est le but du kubernetes autoscaler qui va reconfigurer l'autoscaling group des nodes pour en ajouter/enlever suivant l'usage

    https://eksworkshop.com/scaling/deploy_ca/

    Le pod qui fait tourner ça doit avoir les bon droits IAM pour pouvoir modifier l'ASG
    voir : https://blog.csanchez.org/2018/11/14/installing-kube2iam-in-aws-kubernetes-eks-cluster/

    March 25, 2019 at 5:00:37 PM GMT+1 * - permalink - archive.org - https://github.com/kubernetes/autoscaler
    autoscaling k8s
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    Force deployment rolling-update · Issue #27081 · kubernetes/kubernetes
    kubectl patch deployment web -p "{\"spec\":{\"template\":{\"metadata\":{\"labels\":{\"date\":\"`date +'%s'`\"}}}}}"

    mieux :
    kubectl rollout restart daemonset/filebeat-filebeat
    kubectl rollout restart deployment/web
    March 25, 2019 at 12:54:04 PM GMT+1 * - permalink - archive.org - https://github.com/kubernetes/kubernetes/issues/27081
    k8s patch rolling update
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    Kubernetes Horizontal Pod & Cluster Autoscaling: All You Need to Know | Caylent
    March 22, 2019 at 6:13:44 PM GMT+1 - permalink - archive.org - https://caylent.com/kubernetes-autoscaling/
    hpa k8s
  • Configure Kubernetes Autoscaling with Custom Metrics
    March 22, 2019 at 6:13:34 PM GMT+1 - permalink - archive.org - https://docs.bitnami.com/kubernetes/how-to/configure-autoscaling-custom-metrics/
    hpa k8s
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    community/horizontal-pod-autoscaler.md at master · kubernetes/community
    March 22, 2019 at 6:13:23 PM GMT+1 - permalink - archive.org - https://github.com/kubernetes/community/blob/master/contributors/design-proposals/autoscaling/horizontal-pod-autoscaler.md#autoscaling-algorithm
    hpa k8s
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    Kubernetes HPA Autoscaling with Custom and External Metrics
    March 22, 2019 at 6:13:11 PM GMT+1 - permalink - archive.org - https://medium.com/uptime-99/kubernetes-hpa-autoscaling-with-custom-and-external-metrics-da7f41ff7846
    hpa k8s
  • johanhaleby/kubetail: Bash script to tail Kubernetes logs from multiple pods at the same time
    March 20, 2019 at 2:03:39 PM GMT+1 - permalink - archive.org - https://github.com/johanhaleby/kubetail
    k8s logs
  • tektoncd/pipeline: A K8s-native Pipeline resource.
    March 17, 2019 at 5:16:29 PM GMT+1 - permalink - archive.org - https://github.com/tektoncd/pipeline
    cicd k8s
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    philpep/imago: Ensure kubernetes pods run on latest images builds from the docker registry

    Peut être utile dans certains cas, je me le garde de côté

    March 15, 2019 at 10:35:45 AM GMT+1 - permalink - archive.org - https://github.com/philpep/imago
    k8s latest
  • Learn Kubernetes using Interactive Browser-Based Labs | Katacoda
    March 14, 2019 at 5:34:27 PM GMT+1 - permalink - archive.org - https://www.katacoda.com/courses/kubernetes
    k8s tutorial
  • kelseyhightower/kubernetes-the-hard-way: Bootstrap Kubernetes the hard way on Google Cloud Platform. No scripts.
    March 14, 2019 at 5:33:30 PM GMT+1 - permalink - archive.org - https://github.com/kelseyhightower/kubernetes-the-hard-way
    hard k8s tutorial
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    Using Helm without Tiller - Giant Swarm

    Pour obtenir les yaml sans installer un helm chart :

    helm template \
    --values ./values/prometheus.yaml \
    --output-dir ./manifests \
    ./charts/prometheus

    March 11, 2019 at 3:25:18 PM GMT+1 - permalink - archive.org - https://blog.giantswarm.io/what-you-yaml-is-what-you-get/
    helm k8s
  • awesome-kubernetes/README.md at master · ramitsurana/awesome-kubernetes · GitHub

    Via arnaudb

    March 10, 2019 at 2:37:34 PM GMT+1 - permalink - archive.org - https://github.com/ramitsurana/awesome-kubernetes/blob/master/README.md#monitoring
    k8s resources
  • Kubernetes-Certified-Administrator/README.md at master · walidshaari/Kubernetes-Certified-Administrator · GitHub

    Via arnaudb

    March 10, 2019 at 2:36:00 PM GMT+1 - permalink - archive.org - https://github.com/walidshaari/Kubernetes-Certified-Administrator/blob/master/README.md
    k8s resources
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    kube-eagle/README.md at master · google-cloud-tools/kube-eagle · GitHub

    Via arnaudb

    March 10, 2019 at 2:32:55 PM GMT+1 - permalink - archive.org - https://github.com/google-cloud-tools/kube-eagle/blob/master/README.md
    exporter k8s prometheus
  • Can anyone talk about the positives/negatives of Operators v/s Helm Charts? Fro... | Hacker News
    March 10, 2019 at 10:57:43 AM GMT+1 - permalink - archive.org - https://news.ycombinator.com/item?id=16969495
    helm k8s operator
  • coreos/prometheus-operator: Prometheus Operator creates/configures/manages Prometheus clusters atop Kubernetes

    Prometheus Operator vs. kube-prometheus

    The Prometheus Operator makes the Prometheus configuration Kubernetes native and manages and operates Prometheus and Alertmanager clusters. It is a piece of the puzzle regarding full end-to-end monitoring.

    kube-prometheus combines the Prometheus Operator with a collection of manifests to help getting started with monitoring Kubernetes itself and applications running on top of it.

    https://github.com/coreos/prometheus-operator/tree/master/contrib/kube-prometheus

    March 9, 2019 at 9:41:15 PM GMT+1 - permalink - archive.org - https://github.com/coreos/prometheus-operator
    k8s prometheus
  • Controlling nginx

    Pour un graceful shutdown de nginx, il faut un SIGQUIT
    Kubernetes envoie du SIGTERM alors on peut utiliser un preStop script pour être + cool
    https://kubernetes.io/docs/tasks/configure-pod-container/attach-handler-lifecycle-event/#define-poststart-and-prestop-handlers

    On peut aussi utiliser le preStop pour s'assuret que le container nginx sidecar s'arrête bien avant l'autre container en posant un lock dans un shared volume. Le preStop de l'autre container va attendre que le lock soit supprimé pour se couper. Le preStop du nginx va supprimer le lock quand il a bien terminé.

    On crée le lock dans un postStart

    via Meetup k8s bbc speaker

    March 8, 2019 at 12:03:45 PM GMT+1 - permalink - archive.org - http://nginx.org/en/docs/control.html
    k8s nginx poststart prestop sidecar
  • A Read Only Kubernetes Dashboard | blog.cowger.us

    read-only

    March 8, 2019 at 11:40:45 AM GMT+1 - permalink - archive.org - http://blog.cowger.us/2018/07/03/a-read-only-kubernetes-dashboard.html
    dashboard k8s readonly
  • Kubernetes Event Notifications to a Slack Channel- Part V
    March 7, 2019 at 6:04:04 PM GMT+1 - permalink - archive.org - https://blog.powerupcloud.com/kubernetes-event-notifications-to-a-slack-channel-part-v-a9634b39db8f
    events k8s slack
  • Note: EKS worker nodes endpoint for prometheus

    tcp6 0 0 :::61678 :::* LISTEN 0 81586 32466/aws-k8s-agent

    Tous les nodes exposent ça, c'est cool, ils auraient pu en parler dans la doc ;)

    curl localhost:61678/metrics

    March 7, 2019 at 12:34:55 PM GMT+1 - permalink - archive.org - https://links.infomee.fr/?WwXrCQ
    eks k8s metric metrics prometheus
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    kubernetes-incubator/external-dns: Configure external DNS servers (AWS Route53, Google CloudDNS and others) for Kubernetes Ingresses and Services

    marche bien, j'ai quand même créé une nouvelle zone et donné les droits dans le role IAM seulement sur celle-ci pour ne pas tout mélanger
    Il faut désactiver le upsert only sinon les entrées DNS ne sont pas supprimées quand le service est supprimé et quand on le recrée, il n'arrive pas à update

    March 6, 2019 at 6:10:04 PM GMT+1 * - permalink - archive.org - https://github.com/kubernetes-incubator/external-dns
    dns k8s
  • Kubernetes/kubectl Ignores Annotation Changes | 8bitzen

    ça m'est arrivé, bien galère..

    Il faut ajouter des quotes aux value des annotations pour qu'elles soient prise en compte lors d'un apply

    March 6, 2019 at 6:02:20 PM GMT+1 - permalink - archive.org - https://blog.8bitzen.com/05-07-2018-k8s-kubecl-ignores-annotation-changes/
    annotations k8s
  • Note: Kubernetes rollout history

    Quand on modifie un deployment avec un kubectl apply -f chemin/vers/fichier.yaml
    Le rollout history n'est pas complété, aucune révision n'est créée
    Il faut ajouter un --record à la commande précédente ce qui va créer une révision avec un "change cause" qui va reprendre la commande :

    REVISION CHANGE-CAUSE
    10 kubectl apply --filename=k8s/preprod/ --record=true

    Pas mal mais on peut faire mieux en ayant par exemple le hash du commit (ou le numéro du build..) dans ce "change cause"
    Pour ça, dans la CI/CD, on peut renommer par exemple le dossier avant de lancer le kubectl apply -f, ce qui donnera :
    REVISION CHANGE-CAUSE
    11 kubectl apply --filename=k8s/preprod-a5bcec9 --record=true

    Et comme ça on a un rollout history bien propre pour s'y retrouver ;)

    March 6, 2019 at 4:59:53 PM GMT+1 - permalink - archive.org - https://links.infomee.fr/?7sdJlA
    k8s rollback rollout
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    jtblin/kube2iam: kube2iam provides different AWS IAM roles for pods running on Kubernetes
    March 6, 2019 at 9:54:26 AM GMT+1 - permalink - archive.org - https://github.com/jtblin/kube2iam
    eks iam k8s policy role
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