terraform-k8s/notes

# kubeadm config images pull

# kubeadm init phase preflight

# kubeadm init phase certs all --apiserver-advertise-address 2001:470:6d:22c:42::1 --apiserver-cert-extra-sans k8s-master.e2m

# kubeadm init phase kubeconfig all --apiserver-advertise-address 2001:470:6d:22c:42::1 --node-name k8s-master.e2m

# kubeadm init phase kubelet-start

# echo "KUBELET_KUBEADM_ARGS="--cgroup-driver=systemd --network-plugin=kubenet --pod-infra-container-image=k8s.gcr.io/pause:3.1"" > /var/lib/kubelet/kubeadm-flags.env

# kubeadm init phase control-plane all

# kubeadm init phase upload-certs --config=kubeadm-master-config.cfg --upload-certs

# kubeadm init phase mark-control-plane --config kubeadm-master-config.cfg

# kubeadm init phase bootstrap-token --config kubeadm-master-config.cfg

# kubeadm init phase upload-config all --config kubeadm-master-config.cfg

# kubeadm init phase addon all --config kubeadm-master-config.cfg --apiserver-advertise-address 2001:470:6d:22c:42::1 --pod-network-cidr 2001:470:6d:22c:42::/80 --service-cidr 2001:470:6d:22c:49::/80

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08:14 <hybris> weil wenn wir --network-plugin=kubenet nutzen moechten muessen wir mit kubeadm die einzelnen phasen einzeln ausfuehren
08:14 <hybris> https://kubernetes.io/docs/reference/setup-tools/kubeadm/kubeadm-init-phase/#cmd-phase-kubelet-start
08:15 <hybris> die 'phase kubelet-start' erstellt dir dann die file /var/lib/kubelet/kubeadm-flags.env wo per default '--network-plugin=cni' drinsteht
20:34 <mue> wennde das mal auch noch in ne wikiseite packst, waer super, uebermorgen hab ich das iweder vergessen

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  mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

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/etc/cni/net.d/10-bridge-v6.conf
```json
{
  "cniVersion": "0.3.0",
  "name": "mynet",
  "type": "bridge",
  "bridge": "cbr0",
  "isDefaultGateway": true,
  "ipMasq": true,
  "hairpinMode": true,
  "ipam": {
    "type": "host-local",
    "ranges": [
      [
        {
          "subnet": "2001:470:6d:22c:42::/80",
          "gateway": "2001:470:6d:22c::1"
        }
      ]
    ]
  }
}
```
ansible snippet
```yaml
- name: create cni config directory
  file:
    path: /etc/cni/net.d
    state: directory
- name: 
  template:
    src: ../files/kubenet-config.json.conf
    dest: /etc/cni/net.d/10-bridge-v6.conf
```

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~/kubeadm_v6.cfg
```
apiVersion: kubeadm.k8s.io/v1beta1
kind: ClusterConfiguration
kubernetesVersion: v1.15.1
apiServer:
  extraArgs:
    advertise-address: 2001:470:6d:22c:42::1
    anonymous-auth: "false"
    enable-admission-plugins: AlwaysPullImages,DefaultStorageClass
controllerManager:
  extraArgs:
    bind-address: ::1
```

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/var/lib/kubelet/kubeadm-flags.env
```
KUBELET_KUBEADM_ARGS="--cgroup-driver=systemd --network-plugin=kubenet --pod-infra-container-image=k8s.gcr.io/pause:3.1"
```