设定 Microk8s 为固定IP，解决重开机 Hyper-V IP 浮动问题

工作上用到 Microk8s，因架设在 Hyper-V 上，当电脑重新开机后 Hyper-V IP会浮动，导致 microk8s 指令无法正常运作，因此想到了使用固定IP来解决这个问题。

在 Windows 10 先安装好以下工具:

使用 Microk8s 架设 Kubernetes

安装Kubernetes

microk8s install

执行完后

Launched: microk8s-vm2022-01-19T15:40:30+08:00 INFO Waiting for automatic snapd restart...microk8s (1.22/stable) v1.22.5 from Canonical✓ installedmicrok8s-integrator-windows 0.1 from Canonical✓ installedMicroK8s is up and running. See the available commands with `microk8s --help`.

会在 Hyper-V 管理员看到 microk8s-vm 的虚拟机

查看 Microk8s 状态

microk8s status

microk8s is runninghigh-availability: no  datastore master nodes: 127.0.0.1:19001  datastore standby nodes: noneaddons:  enabled:    ha-cluster           # Configure high availability on the current node  disabled:    ambassador           # Ambassador API Gateway and Ingress    cilium               # SDN, fast with full network policy    dashboard            # The Kubernetes dashboard    dns                  # CoreDNS    fluentd              # Elasticsearch-Fluentd-Kibana logging and monitoring    gpu                  # Automatic enablement of Nvidia CUDA    helm                 # Helm 2 - the package manager for Kubernetes    helm3                # Helm 3 - Kubernetes package manager    host-access          # Allow Pods connecting to Host services smoothly    ingress              # Ingress controller for external access    istio                # Core Istio service mesh services    jaeger               # Kubernetes Jaeger operator with its simple config    kata                 # Kata Containers is a secure runtime with lightweight VMS    keda                 # Kubernetes-based Event Driven Autoscaling    knative              # The Knative framework on Kubernetes.    kubeflow             # Kubeflow for easy ML deployments    linkerd              # Linkerd is a service mesh for Kubernetes and other frameworks    metallb              # Loadbalancer for your Kubernetes cluster    metrics-server       # K8s Metrics Server for API access to service metrics    multus               # Multus CNI enables attaching multiple network interfaces to pods    openebs              # OpenEBS is the open-source storage solution for Kubernetes    openfaas             # openfaas serverless framework    portainer            # Portainer UI for your Kubernetes cluster    prometheus           # Prometheus operator for monitoring and logging    rbac                 # Role-Based Access Control for authorisation    registry             # Private image registry exposed on localhost:32000    storage              # Storage class; allocates storage from host directory    traefik              # traefik Ingress controller for external access

虚拟交换器

建立虚拟交换器

填入名称 LANBridge

设定交换器

microk8s-vm 设定

停止 Microk8s

microk8s stop

设定 microk8s-vm 虚拟机网路介面卡

启动 Microk8s

microk8s start

查看 microk8s-vm 讯息

multipass info microk8s-vm

Name:           microk8s-vmState:          RunningIPv4:           172.21.68.80                10.1.254.64Release:        Ubuntu 18.04.6 LTSImage hash:     7bd21b98e344 (Ubuntu 18.04 LTS)Load:           0.69 0.53 0.37Disk usage:     2.3G out of 48.3GMemory usage:   1.3G out of 3.9GMounts:         --

透过 multipass 编辑 microk8s-vm 网路设定

multipass exec microk8s-vm -- sudo vi /etc/netplan/50-cloud-init.yaml

Vi 文字编辑器

原有设定

network:    ethernets:        eth0:            dhcp4: true            match:                macaddress: 52:54:00:5e:ec:bd            set-name: eth0    version: 2

修改后设定

network:    ethernets:        eth0:            dhcp4: true            match:                macaddress: 52:54:00:5e:ec:bd            set-name: eth0        eth1:            addresses: [192.168.1.101/24]    version: 2

配置网路设定

multipass exec microk8s-vm -- sudo netplan apply

查看 microk8s-vm 讯息

multipass info microk8s-vm

Name:           microk8s-vmState:          RunningIPv4:           172.21.68.80                192.168.1.101                10.1.254.64Release:        Ubuntu 18.04.6 LTSImage hash:     7bd21b98e344 (Ubuntu 18.04 LTS)Load:           0.78 0.59 0.41Disk usage:     2.3G out of 48.3GMemory usage:   1.3G out of 3.9GMounts:         --

确认可以连到该主机

ping 192.168.1.101

Pinging 192.168.1.101 with 32 bytes of data:Reply from 192.168.1.101: bytes=32 time<1ms TTL=64Reply from 192.168.1.101: bytes=32 time<1ms TTL=64Reply from 192.168.1.101: bytes=32 time<1ms TTL=64Reply from 192.168.1.101: bytes=32 time<1ms TTL=64Ping statistics for 192.168.1.101:    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds:    Minimum = 0ms, Maximum = 0ms, Average = 0ms

更改 microk8s 主机IP

修改为 192.168.1.101

重新开机后输入指令，可以正常显示讯息就成功了

microk8s status

参考文章
使用 MicroK8s 架设 Kubernetes 丛集的完整过程解析