Différences

Ci-dessous, les différences entre deux révisions de la page.

--- tech:notes_kubernetes_k8s_-_outils [2025/10/06 11:48] – Jean-Baptiste
+++ tech:notes_kubernetes_k8s_-_outils [2026/06/07 19:12] (Version actuelle) – modification externe 127.0.0.1
@@ Ligne 1: / Ligne 1: @@
+<!DOCTYPE markdown>
+{{tag>Brouillon K8S}}
+# Notes Kubernetes k8s - Outils
+Voir :
+* https://wiki.sfeir.com/kubernetes/outils/k3s/
+* https://blog.stephane-robert.info/docs/conteneurs/orchestrateurs/outils/kubectl-plugins/
+Voir aussi :
+* Octant / Lens
+## Arkade
+Gestionnaire de paquets pour installer des outils K8S
+https://github.com/alexellis/arkade
+## kubectl
+Afin d’interagir avec Kubernetes, kubectl - la CLI permettant d'exécuter des commandes sur un cluster - est nécessaire.
+En outre, pour peu qu'on ait à interagir avec plusieurs clusters, avec différents crédentials, dans plusieurs namespaces, il devient difficile de jongler de l'un à l'autre. Afin de faciliter cela, des programmes existent:
+## Krew
+Krew is the plugin manager for kubectl command-line tool.
+Avec asdf (voir aussi mise.run)
+~~~bash
+asdf plugin add krew
+asdf install krew latest
+asdf set --home krew latest
+~~~
+## Kubetail
+https://github.com/johanhaleby/kubetail
+## kubectx / kubens
+Voir :
+* `kubectl config`
+Permet de changer le contexte courant et le namespace courant
+Voir :
+* https://wiki.sfeir.com/kubernetes/outils/kubectx/
+~~~bash
+apt install kubectx
+~~~
+Migrating to Kubectx and Kubens From KUBECONFIG
+~~~bash
+# Reference all your config files so Kubectl load them all
+$ export KUBECONFIG=~/.kube/cluster-1:~/.kube/cluster-2:~/.kube/cluster-3
+# Save a merged version of the current config to a new file
+$ kubectl config view --flatten > ~/.kube/.config
+~~~
+## kube-ps1
+Permet d'afficher au prompt les contexte et namespace courants
+## Helm
+Templating & package manager
+Helm est un package manager pour kubernetes, permettant de déployer facilement des composants sous forme de "Charts".
+Install
+~~~bash
+sudo snap install helm --classic
+~~~
+Dépôts Bitnami : \\
+https://github.com/bitnami/charts/tree/main/bitnami
+Exemple avec OpenEBS
+~~~bash
+helm repo add openebs https://openebs.github.io/charts
+helm repo update
+helm search repo openebs
+helm show values openebs/openebs > value-openebs.yml
+kubectl create ns openebs
+helm install openebs openebs/openebs -f value-openebs.yml -n openvbs
+helm upgrade openebs openebs/openebs --namespace openvbs --set legacy.enable=true --reuse-vakues
+~~~
+## k9s
+~~~bash
+snap install k9s --devmode
+ln -s /snap/k9s/current/bin/k9s /usr/local/bin/
+~~~
+## popeye
+## stern
+## nerdctl
+Équivalent de la commande docker / podman / crictl / ctr mais pour ContainerD
+Voir [Vidéo Docker vs Containerd: Understanding the Differences and Choosing the Right Containerization Tool](https://www.youtube.com/watch?v=21onkZfL2yM)
+## LinkerD
+(Conçurent de Istio)
+## Istio
+(Conçurent de LinkerD)
+## Kubectl (kubernetes-client)
+Install de kubectl
+~~~bash
+sudo apt-get install kubernetes-client
+~~~
+ou
+~~~bash
+VERSION=$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)
+curl -LO https://storage.googleapis.com/kubernetes-release/release/$VERSION/bin/linux/amd64/kubectl
+chmod +x ./kubectl
+sudo mv ./kubectl /usr/local/bin/kubectl
+~~~
+### Config
+~~~bash
+mkdir $HOME/.config/
+kubectl completion bash >> $HOME/.config/bash_completion
+~~~
+### Conf
+`${HOME}/.kube/config`
+ou `$KUBECONFIG`
+`~/.bashrc`
+~~~bash
+alias k=kubectl
+complete -F __start_kubectl k
+alias kall="kubectl api-resources --namespaced=true -o name | xargs -i kubectl get {} -o name"
+alias kapp="kubectl apply -f"
+alias kdel="kubectl delete -f"
+alias ksys="kubectl -n kube-system"
+kshow() {
+    kubectl get "$@" -o yaml | vim -c "set ft=yaml" -c "g/^  managedFields:/;/^  name/-1d" -c "noh" -
+}
+alias kports='kubectl get pods -o custom-columns="POD:.metadata.name,PORTS:.spec.containers[*].ports[*].containerPort"'
+alias kcc='kubectl config current-context'
+alias kg='kubectl get'
+alias kga='kubectl get all --all-namespaces'
+alias kgp='kubectl get pods'
+alias kgs='kubectl get services'
+~~~
+## Dashboard
+Voir :
+  * https://github.com/kubernetes/dashboard
+  * https://komodor.com/learn/kubernetes-dashboard/
+Remplacé par https://headlamp.dev
+### Installation
+~~~bash
+helm upgrade --install kubernetes-dashboard kubernetes-dashboard/kubernetes-dashboard --create-namespace --namespace kubernetes-dashboard
+~~~
+`dashboard-admin.yaml`
+~~~yaml
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: admin-user
+  namespace: kubernetes-dashboard
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: admin-user
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: cluster-admin
+subjects:
+- kind: ServiceAccount
+  name: admin-user
+  namespace: kubernetes-dashboard
+~~~
+~~~bash
+kubectl apply -f dashboard-admin.yaml
+~~~
+### Accès
+~~~bash
+kubectl -n kubernetes-dashboard port-forward svc/kubernetes-dashboard-kong-proxy 8443:443
+~~~
+~~~bash
+# kubectl -n NAMESPACE create token SERVICE_ACCOUNT
+kubectl -n kubernetes-dashboard create token admin-user
+~~~
+Source : https://upcloud.com/resources/tutorials/deploy-kubernetes-dashboard
+Pour avoir les graphiques il faut installer **Metrics-server**
+## Stockage
+https://github.com/utkuozdemir/pv-migrate?
+### Old
+~~~bash
+kubectl apply  -f https://raw.githubusercontent.com/kubernetes/dashboard/master/aio/deploy/recommended.yaml
+#kubectl delete -f https://raw.githubusercontent.com/kubernetes/dashboard/master/aio/deploy/recommended.yaml
+~~~
+~~~
+# kubectl proxy
+Starting to serve on 127.0.0.1:8001
+~~~
+## Notes WebUI Rancher
+~~~bash
+docker run -d --restart=unless-stopped -p 80:80 -p 443:443 rancher/rancher:latest
+~~~