From 59055f40797d74c63db688f8aeb0ff2f135fb9d6 Mon Sep 17 00:00:00 2001
From: Gorden <gorden.mende@solusar.de>
Date: Wed, 12 Nov 2025 10:36:38 +0100
Subject: [PATCH] doku

---
 cluster-doku/README.md | 99 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)

diff --git a/cluster-doku/README.md b/cluster-doku/README.md
index 23a94fe..e852db1 100644
--- a/cluster-doku/README.md
+++ b/cluster-doku/README.md
@@ -29,3 +29,102 @@ SystemdCgroup = true
 ```
 systemctl restart containerd
 ```
+
+* Systemparameter anpassen
+```
+cat > /etc/sysctl.d/99-k8s-cri.conf <<EOF
+net.bridge.bridge-nf-call-iptables=1
+net.bridge.bridge-nf-call-ip6tables=1
+net.ipv4.ip_forward=1
+EOF
+```
+* und anwenden
+```
+sysctl --system
+```
+
+* Swap abschalten und auskommentieren
+```
+swapoff -a
+nano /etc/fstab
+```
+
+## Kubernetes installieren (auf allen Knoten)
+* Pakete für Kubernetes installieren (kubectl, kubeadm, kubelet)
+```
+curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.33/deb/Release.key | gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.33/deb/ /" | tee /etc/apt/sources.list.d/kubernetes.list
+apt update
+apt -y install kubeadm kubelet kubectl
+```
+
+* cni verknüpfen
+```
+ln -s /opt/cni/bin /usr/lib/cni
+```
+
+## Control Plane Node einrichten
+* Konfiguration erstellen und anpassen (config.yaml)
+```
+apiVersion: kubeadm.k8s.io/v1beta4
+bootstrapTokens:
+- groups:
+  - system:bootstrappers:kubeadm:default-node-token
+  token: abcdef.0123456789abcdef
+  ttl: 24h0m0s
+  usages:
+  - signing
+  - authentication
+kind: InitConfiguration
+localAPIEndpoint:
+  advertiseAddress: 192.168.0.72
+  bindPort: 6443
+nodeRegistration:
+  criSocket: unix:///var/run/containerd/containerd.sock
+  imagePullPolicy: IfNotPresent
+  imagePullSerial: true
+  name: dlp.realm.local
+  taints: null
+timeouts:
+  controlPlaneComponentHealthCheck: 4m0s
+  discovery: 5m0s
+  etcdAPICall: 2m0s
+  kubeletHealthCheck: 4m0s
+  kubernetesAPICall: 1m0s
+  tlsBootstrap: 5m0s
+  upgradeManifests: 5m0s
+---
+controlPlaneEndpoint: "192.168.0.71:6443"
+apiServer: {}
+apiVersion: kubeadm.k8s.io/v1beta4
+caCertificateValidityPeriod: 87600h0m0s
+certificateValidityPeriod: 8760h0m0s
+certificatesDir: /etc/kubernetes/pki
+clusterName: kubernetes
+controllerManager: {}
+dns: {}
+encryptionAlgorithm: RSA-2048
+etcd:
+  local:
+    dataDir: /var/lib/etcd
+imageRepository: registry.k8s.io
+kind: ClusterConfiguration
+kubernetesVersion: 1.33.0
+networking:
+  dnsDomain: cluster.local
+  serviceSubnet: 10.96.0.0/12
+proxy: {}
+scheduler: {}
+---
+apiVersion: kubeproxy.config.k8s.io/v1alpha1
+kind: KubeProxyConfiguration
+mode: "ipvs"
+ipvs:
+  strictARP: true
+```
+
+* Control Plane Node anstarten
+```
+kubeadm init --config=config.yaml
+```
+