6 Ocak 2025 Pazartesi

Kubernetes kind: Cluster

Örnek
Şöyle yaparız
apiVersion: cluster.k8s.io/v1alpha1
kind: Cluster
metadata:
  name: my-cluster
spec:
  autoscaler:
    enabled: true
    options:
      - key: balance-similar-node-groups
        value: true
      - key: expander
        value: least-waste
Açıklaması şöyle
This configuration enables the cluster autoscaler and sets it to balance similar node groups and use the least-waste expander, which helps in utilizing the reserved instances more effectively. 

16 Aralık 2024 Pazartesi

kubectl describe ingress seçeneği

Giriş
Açıklaması şöyle
This command shows configuration details and associated events. Look for configuration errors, missing SSL certificates, or routing issues.
Söz dizimi şöyle
kubectl describe ingress <ingress-name> -n <namespace-name>

kubectl describe node seçeneği

Giriş
Açıklaması şöyle
This command provides details on why a node might be NotReady, such as memory issues, disk pressure, or taints not tolerated by the pods, pods running on the nodes, label... It’s a powerful command that will help you to get detailed informations about nodes.

27 Kasım 2023 Pazartesi

Cluster Propotional Autoscaler - ReplicaSet Ekler/Siler

Giriş
Açıklaması şöyle
CPA aims to horizontally scale the number of Pod replicas based on the cluster’s scale. A common example is DNS services. CPA can dynamically adjust the number of DNS instances based on the current cluster scale, which can be either the number of nodes or the overall CPU capacity.

2 Ekim 2023 Pazartesi

Kubernetes kind: Role

Örnek
Elimizde şöyle bir Role olsun. Bu Role pods ve configmaps kaynaklarını watch, get vs yapabilir. Yani izleyebilir.
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: leader
  labels:
    app: kubernetes-leader-election-example
    group: org.springframework.cloud
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - watch
  - get
- apiGroups:
  - ""
  resources:
  - configmaps
  verbs:
  - watch
  - get
  - update
  # resourceNames:
  #   - <config-map name>
Bu Rolü kendime atarım
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  labels:
    app: kubernetes-leader-election-example
    group: org.springframework.cloud
  name: leader
roleRef:
  apiGroup: ""
  kind: Role
  name: leader
subjects:
- kind: ServiceAccount
  name: default
  apiGroup: ""


Kubernetes vs NoHashicorp Nomad

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