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Remove Cluster API

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Khue Doan
2021-09-04 13:28:25 +07:00
parent f9abff8647
commit 8d0841ba2d
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14
experimental/cluster-api/README.md
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# Infrastructure
Bare metal servers life cycle management:
- Automatically discover bare metal servers
- Automatically wipe the disk
- Install Linux on empty machines via the network (using iPXE)
Kubernetes cluster creation:
- Create ephemeral management cluster (using Kubernetes in Docker)
- Create target cluster
- Pivot the management plane over to the new cluster
- Remove the ephemeral management cluster

100
experimental/cluster-api/bootstrap.sh
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#!/bin/sh
set -euo pipefail
# Create ephemeral cluster
kind create cluster \
--wait 60s \
--kubeconfig ephemeral-cluster/kind-kubeconfig.yaml \
--config ephemeral-cluster/kind.yaml
export KUBECONFIG="$PWD/ephemeral-cluster/kind-kubeconfig.yaml"
# Install Sidero
clusterctl init \
--bootstrap talos \
--control-plane talos \
--infrastructure sidero \
--config clusterctl.yaml
# Create DHCP server
# kubectl create configmap dhcp-server \
# --from-file dhcp-server/dhcpd.conf
# kubectl apply \
# --filename dhcp-server/deployment.yaml
docker run --detach \
--name bootstrap-dhcp-server \
--network=host \
--volume $PWD/dhcp-server/dhcpd.conf:/data/dhcpd.conf \
networkboot/dhcpd:1.1.0
# Wait for all pods to be ready
kubectl wait pods \
--all \
--all-namespaces \
--timeout 300s \
--for=condition=Ready
# Apply server classes
kubectl apply \
--filename serverclasses/
# Waker servers up
wol '00:23:24:d1:f3:f0'
# Create cluster
while true; do
kubectl get server --output jsonpath='{.items[0].status.addresses[?(@.type=="InternalIP")].address}' && break
done
export CONTROL_PLANE_ENDPOINT=$(kubectl get server \
--output jsonpath='{.items[0].status.addresses[?(@.type=="InternalIP")].address}') && break
clusterctl config cluster \
--infrastructure sidero \
--config clusterctl.yaml \
homelab | kubectl apply --filename -
# Get kube config
while true; do
clusterctl get kubeconfig homelab > cluster/homelab-kubeconfig.yaml && break
done
export KUBECONFIG="$PWD/cluster/homelab-kubeconfig.yaml"
while true; do
kubectl cluster-info && break
done
# TODO Untaint master node
# kubectl taint node node-role.kubernetes.io/master:NoSchedule-
# Pivot Sidero to new cluster
clusterctl init \
--bootstrap talos \
--control-plane talos \
--infrastructure sidero \
--kubeconfig cluster/homelab-kubeconfig.yaml \
--config clusterctl.yaml
clusterctl move \
--kubeconfig=ephemeral-cluster/kind-kubeconfig.yaml \
--to-kubeconfig=cluster/homelab-kubeconfig.yaml
# Cleanup ephemeral cluster
kind delete cluster --name bootstrap-cluster
rm ephemeral-cluster/kind-kubeconfig.yaml
docker rm --force bootstrap-dhcp-server
# TODO Scale the cluster up
# wol '00:23:24:d1:f4:d6'
# wol '00:23:24:d1:f5:69'
# wol '00:23:24:e7:04:60'
# clusterctl config cluster \
# --infrastructure sidero \
# --config clusterctl.yaml \
# --config clusterctl.yaml \
# --worker-machine-count 3 \
# homelab > cluster/homelab.yaml
# kubectl apply --filename cluster/homelab.yaml

112
experimental/cluster-api/cluster/homelab.yaml
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apiVersion: cluster.x-k8s.io/v1alpha3
kind: Cluster
metadata:
name: homelab
namespace: default
spec:
clusterNetwork:
pods:
cidrBlocks:
- 10.244.0.0/16
services:
cidrBlocks:
- 10.96.0.0/12
controlPlaneRef:
apiVersion: controlplane.cluster.x-k8s.io/v1alpha3
kind: TalosControlPlane
name: homelab-cp
infrastructureRef:
apiVersion: infrastructure.cluster.x-k8s.io/v1alpha3
kind: MetalCluster
name: homelab
---
apiVersion: infrastructure.cluster.x-k8s.io/v1alpha3
kind: MetalCluster
metadata:
name: homelab
namespace: default
spec:
controlPlaneEndpoint:
host: 192.168.1.12
port: 6443
---
apiVersion: infrastructure.cluster.x-k8s.io/v1alpha3
kind: MetalMachineTemplate
metadata:
name: homelab-cp
namespace: default
spec:
template:
spec:
serverClassRef:
apiVersion: metal.sidero.dev/v1alpha1
kind: ServerClass
name: m5.xlarge
---
apiVersion: controlplane.cluster.x-k8s.io/v1alpha3
kind: TalosControlPlane
metadata:
name: homelab-cp
namespace: default
spec:
controlPlaneConfig:
controlplane:
generateType: controlplane
talosVersion: v0.11.2
init:
generateType: init
talosVersion: v0.11.2
infrastructureTemplate:
apiVersion: infrastructure.cluster.x-k8s.io/v1alpha3
kind: MetalMachineTemplate
name: homelab-cp
replicas: 1
version: v1.21.1
---
apiVersion: bootstrap.cluster.x-k8s.io/v1alpha3
kind: TalosConfigTemplate
metadata:
name: homelab-workers
namespace: default
spec:
template:
spec:
generateType: join
talosVersion: v0.11.2
---
apiVersion: cluster.x-k8s.io/v1alpha3
kind: MachineDeployment
metadata:
name: homelab-workers
namespace: default
spec:
clusterName: homelab
replicas: 3
selector:
matchLabels: null
template:
spec:
bootstrap:
configRef:
apiVersion: bootstrap.cluster.x-k8s.io/v1alpha3
kind: TalosConfigTemplate
name: homelab-workers
clusterName: homelab
infrastructureRef:
apiVersion: infrastructure.cluster.x-k8s.io/v1alpha3
kind: MetalMachineTemplate
name: homelab-workers
version: v1.21.1
---
apiVersion: infrastructure.cluster.x-k8s.io/v1alpha3
kind: MetalMachineTemplate
metadata:
name: homelab-workers
namespace: default
spec:
template:
spec:
serverClassRef:
apiVersion: metal.sidero.dev/v1alpha1
kind: ServerClass
name: m5.xlarge

11
experimental/cluster-api/clusterctl.yaml
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SIDERO_CONTROLLER_MANAGER_API_ENDPOINT: 192.168.1.19
SIDERO_CONTROLLER_MANAGER_AUTO_ACCEPT_SERVERS: true
SIDERO_CONTROLLER_MANAGER_HOST_NETWORK: true
CONTROL_PLANE_SERVERCLASS: m5.xlarge
WORKER_SERVERCLASS: m5.xlarge
CONTROL_PLANE_PORT: 6443
KUBERNETES_VERSION: v1.21.1
TALOS_VERSION: v0.11.2

31
experimental/cluster-api/dhcp-server/deployment.yaml
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apiVersion: apps/v1
kind: Deployment
metadata:
labels:
app: dhcp-server
name: dhcp-server
spec:
replicas: 1
selector:
matchLabels:
app: dhcp-server
template:
metadata:
labels:
app: dhcp-server
spec:
containers:
- image: networkboot/dhcpd:1.1.0
name: dhcpd
volumeMounts:
- name: config
mountPath: /data/dhcpd.conf
subPath: dhcpd.conf
hostNetwork: true
volumes:
- name: config
configMap:
name: dhcp-server
items:
- key: dhcpd.conf
path: dhcpd.conf

20
experimental/cluster-api/dhcp-server/dhcpd.conf
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option space pxelinux;
option pxelinux.magic code 208 = string;
option pxelinux.configfile code 209 = text;
option pxelinux.pathprefix code 210 = text;
option pxelinux.reboottime code 211 = unsigned integer 32;
option architecture-type code 93 = unsigned integer 16;
subnet 192.168.1.0 netmask 255.255.255.0 {
option routers 192.168.1.1;
range 192.168.1.2 192.168.1.254;
class "pxeclients" {
match if substring (option vendor-class-identifier, 0, 9) = "PXEClient";
next-server 192.168.1.19;
if option architecture-type = 00:07 {
filename "ipxe.efi";
}
}
}

26
experimental/cluster-api/environment.yaml
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apiVersion: metal.sidero.dev/v1alpha1
kind: Environment
metadata:
name: default
spec:
initrd:
url: https://github.com/talos-systems/talos/releases/download/v0.10.3/initramfs-amd64.xz
kernel:
args:
- console=tty0
- console=ttyS0
- consoleblank=0
- earlyprintk=ttyS0
- ima_appraise=fix
- ima_hash=sha512
- ima_template=ima-ng
- init_on_alloc=1
- initrd=initramfs.xz
- nvme_core.io_timeout=4294967295
- printk.devkmsg=on
- pti=on
- random.trust_cpu=on
- slab_nomerge=
- talos.config=http://192.168.1.19:8081/configdata?uuid=
- talos.platform=metal
url: https://github.com/talos-systems/talos/releases/download/v0.10.3/vmlinuz-amd64

14
experimental/cluster-api/ephemeral-cluster/kind.yaml
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kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
name: bootstrap-cluster
nodes:
- role: control-plane
extraPortMappings:
# TFTP
- containerPort: 69
hostPort: 69
protocol: UDP
# HTTP
- containerPort: 8081
hostPort: 8081
protocol: TCP

13
experimental/cluster-api/serverclasses/m5.xlarge.yaml
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apiVersion: metal.sidero.dev/v1alpha1
kind: ServerClass
metadata:
name: m5.xlarge # The names are free-form and only need to make sense to you
spec:
qualifiers:
cpu:
- manufacturer: Intel(R) Corporation
version: Intel(R) Core(TM) i5-6600T CPU @ 2.70GHz
configPatches:
- op: replace
path: /machine/install/disk
value: /dev/sda