如何从 k3s 上的 nginx 入口修复空的外部 IP？

如何解决如何从 k3s 上的 nginx 入口修复空的外部 IP？

我想在我的 k3s 集群中使用 Metallb 和 Nginx 入口。

目前外部IP为<none>

  kubectl -n ingress-Nginx get svc
NAME                                 TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                      AGE
ingress-Nginx-controller-admission   ClusterIP   10.43.182.71   <none>        443/TCP                      14m
ingress-Nginx-controller             NodePort    10.43.221.32   <none>        80:31121/TCP,443:31807/TCP   14m

我希望它是 192.168.178.240

我安装了 k3s

export K3S_KUBECONfig_MODE="644"
export INSTALL_K3S_EXEC=" --disable servicelb --disable traefik"
export KUBECONfig="~/.kube/config:/etc/rancher/k3s/k3s.yaml"

curl -sfL https://get.k3s.io | sh -

然后我用

安装了Metallb

kubectl apply -f https://raw.githubusercontent.com/Metallb/Metallb/v0.9.6/manifests/namespace.yaml
kubectl apply -f https://raw.githubusercontent.com/Metallb/Metallb/v0.9.6/manifests/Metallb.yaml
kubectl create secret generic -n Metallb-system memberlist --from-literal=secretkey="$(openssl rand -base64 128)"

使用配置 kubectl apply -f config.yaml

config.yaml 
---
apiVersion: v1
kind: ConfigMap
Metadata:
  namespace: Metallb-system
  name: config
data:
  config: |
    address-pools:
    - name: default
      protocol: layer2
      addresses:
      - 192.168.178.240-192.168.178.250

然后我安装了 Nginx ingress 裸机

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-Nginx/controller-v0.45.0/deploy/static/provider/bareMetal/deploy.yaml

所有 Pod 都在运行

  % k3s kubectl get pods --all-namespaces -o wide
NAMESPACE        NAME                                        READY   STATUS      RESTARTS   AGE   IP                NODE         NOMINATED NODE   READInesS GATES
kube-system      metrics-server-86cbb8457f-xmp4w             1/1     Running     0          42m   10.42.0.3         master-pi4   <none>           <none>
kube-system      coredns-854c77959c-vlpxf                    1/1     Running     0          42m   10.42.0.2         master-pi4   <none>           <none>
kube-system      local-path-provisioner-5ff76fc89d-l6nmk     1/1     Running     0          42m   10.42.0.4         master-pi4   <none>           <none>
Metallb-system   speaker-zghmh                               1/1     Running     0          40m   192.168.178.37    master-pi4   <none>           <none>
Metallb-system   controller-64f86798cc-bgcvw                 1/1     Running     0          40m   10.42.1.2         node1-pi4    <none>           <none>
Metallb-system   speaker-cjjl4                               1/1     Running     0          40m   192.168.178.240   node1-pi4    <none>           <none>
Metallb-system   speaker-pnmzm                               1/1     Running     0          40m   192.168.178.35    node2-pi3    <none>           <none>
ingress-Nginx    ingress-Nginx-admission-patch-kmt2s         0/1     Completed   1          19m   10.42.0.5         master-pi4   <none>           <none>
ingress-Nginx    ingress-Nginx-admission-create-7j98l        0/1     Completed   0          19m   10.42.0.6         master-pi4   <none>           <none>
ingress-Nginx    ingress-Nginx-controller-7b78df5bb4-6t2jz   1/1     Running     0          19m   10.42.1.3         node1-pi4    <none>           <none>

为什么入口控制器没有分配外部 IP？

解决方法

在 deploy.yml 旁边，Service 被定义为 NodePort，它必须更改为 LoadBalancer。然后 nginx 入口将作为负载均衡器运行。