MetalLB

MetalLB

MetalLB is a load-balancer implementation for bare metal Kubernetes clusters, using standard routing protocols. (공식 사이트 / Github)

Install

• Helm
• Manifest

Installation with Helm

1. Helm Repo Add

    $ helm repo add metallb https://metallb.github.io/metallb
   

2. Install

   • helm chart를 받아서 values.yaml을 수정

     $ helm pull metallb/metallb
     

   • pull 받은 metallb-0.12.1.tgz 파일 압축 해제 후 values.yaml 수정

       $ kubectl create ns metallb-system
       $ helm install metallb -n metallb-system -f ./values.yaml .
     

       $ vi values.yaml
       ...
       configInline:
         address-pools:
          - name: default
            protocol: layer2
            addresses:
            - 192.168.230.151-192.168.230.199
       ...
     

Installation by Manifest

1. apply the manifest

    $ kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.12.1/manifests/namespace.yaml
    $ kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.12.1/manifests/metallb.yaml
   

2. create secret

    $ kubectl create secret generic -n metallb-system memberlist --from-literal=secretkey="$(openssl rand -base64 128)"
   

3. create configmap

    apiVersion: v1
    kind: ConfigMap
    metadata:
      namespace: metallb-system
      name: config
    data:
      config: |
        address-pools:
        - name: default
          protocol: layer2
          addresses:
          - 192.168.230.151-192.168.230.199
   

4. 설치 확인

    $ k get all -n metallb-system
    NAME                              READY   STATUS    RESTARTS   AGE
    pod/controller-66445f859d-m7kl9   1/1     Running   0          7d3h
    pod/speaker-5gbln                 1/1     Running   0          7d3h
    pod/speaker-b4dj4                 1/1     Running   0          7d3h
    pod/speaker-jbskj                 1/1     Running   0          7d3h
    pod/speaker-s7vhm                 1/1     Running   0          7d3h
    pod/speaker-v5rrs                 1/1     Running   0          7d3h
    pod/speaker-xvqrg                 1/1     Running   0          7d3h
   
    NAME                     DESIRED   CURRENT   READY   UP-TO-DATE   AVAILABLE   NODE     SELECTOR            AGE
    daemonset.apps/speaker   6         6         6       6            6           kubernetes.io/    os=linux   7d3h
   
    NAME                         READY   UP-TO-DATE   AVAILABLE   AGE
    deployment.apps/controller   1/1     1            1           7d3h
   
    NAME                                    DESIRED   CURRENT   READY   AGE
    replicaset.apps/controller-66445f859d   1         1         1       7d3h