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++kubeam config

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Nico Schottelius 1 year ago
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e150d06a3c
  1. 49
      v3-calico/README.md
  2. 13
      v3-calico/kubeadm-config-p7-v2.yaml
  3. 13
      v3-calico/kubeadm-config.yaml

49
v3-calico/README.md

@ -1,3 +1,4 @@
## Introduction
The following guide shows how to setup an IPv6 only cluster at ungleich.
@ -12,9 +13,11 @@ The following guide shows how to setup an IPv6 only cluster at ungleich.
Initialise with all components:
```
kubeadm init --service-cidr 2a0a:e5c0:13:aaa::/108 --pod-network-cidr 2a0a:e5c0:13:bbb::/64
kubeadm init --config kubeadm-config.yaml
```
We need to specify the **--config** option to inject correct cgroupdriver!
We cannot yet skip kube-proxy, because calico does not support eBPF
for IPv6. Cilium supports IPv6 eBPF, but on the other hand does not
support automatic BGP peering. So the following **does not** work:
@ -24,16 +27,6 @@ kubeadm init --skip-phases=addon/kube-proxy --service-cidr 2a0a:e5c0:13:aaa::/10
kubeadm init --service-cidr 2a0a:e5c0:13:aaa::/108 --pod-network-cidr 2a0a:e5c0:13:bbb::/64
```
## Alpine / kubelet hack
Due to some misconfiguration on alpine, **DURING** the **kubeadm
init** we need to modify the **generated**
/var/lib/kubelet/config.yaml to replace "cgroupDriver: systemd" with
"cgroupDriver: cgroupfs".
The same is necessary on the worker nodes, however that can be done
anytime before you plan to schedule containers on them, after the
**kubeadm join** request.
## Worker nodes
@ -110,3 +103,37 @@ included **nginx-test-deployment.yaml**:
```
kubectl apply -f nginx-test-deployment.yaml
```
## Kubevirt
Based on https://kubevirt.io/user-guide/operations/installation/:
```
export RELEASE=v0.35.0
# Deploy the KubeVirt operator
kubectl apply -f https://github.com/kubevirt/kubevirt/releases/download/${RELEASE}/kubevirt-operator.yaml
# Create the KubeVirt CR (instance deployment request) which triggers the actual installation
kubectl apply -f https://github.com/kubevirt/kubevirt/releases/download/${RELEASE}/kubevirt-cr.yaml
```
This never happens:
```
# wait until all KubeVirt components are up
$ kubectl -n kubevirt wait kv kubevirt --for condition=Available
```
## Old/obsolete information
### Alpine / kubelet hack
Due to some misconfiguration on alpine, **DURING** the **kubeadm
init** we need to modify the **generated**
/var/lib/kubelet/config.yaml to replace "cgroupDriver: systemd" with
"cgroupDriver: cgroupfs".
The same is necessary on the worker nodes, however that can be done
anytime before you plan to schedule containers on them, after the
**kubeadm join** request.
**THIS is fixed if we use a kubeadm config file specifying the cgroupdriver**.

13
v3-calico/kubeadm-config-p7-v2.yaml

@ -0,0 +1,13 @@
# kubeadm-config.yaml
kind: ClusterConfiguration
apiVersion: kubeadm.k8s.io/v1beta2
kubernetesVersion: v1.21.0
networking:
dnsDomain: k8s.place7.ungleich.ch
podSubnet: 2a0a:e5c0:13:e1::/64
serviceSubnet: 2a0a:e5c0:13:e2::/108
---
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
cgroupDriver: cgroupfs

13
v3-calico/kubeadm-config.yaml

@ -0,0 +1,13 @@
# kubeadm-config.yaml
kind: ClusterConfiguration
apiVersion: kubeadm.k8s.io/v1beta2
kubernetesVersion: v1.21.0
networking:
dnsDomain: k8s.place7.ungleich.ch
podSubnet: 2a0a:e5c0:13:bbb::/64
serviceSubnet: 2a0a:e5c0:13:aaa::/108
---
kind: KubeletConfiguration
apiVersion: kubelet.config.k8s.io/v1beta1
cgroupDriver: cgroupfs
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