[정보] kubernetes 외부통신 적용(metallb)

namespace 생성

kubectl create namespace metallb-system

helm 등록

helm repo add bitnami https://charts.bitnami.com/bitnami

metallb 적용

helm install -n metallb-system my-metallb bitnami/metallb --version 4.10.1

address pool 파일 작성

# IPAddressPool.yaml

# The address-pools lists the IP addresses that MetalLB is
# allowed to allocate. You can have as many
# address pools as you want.
apiVersion: metallb.io/v1beta1
kind: IPAddressPool
metadata:
  # A name for the address pool. Services can request allocation
  # from a specific address pool using this name.
  name: first-pool
  namespace: metallb-system
spec:
  # A list of IP address ranges over which MetalLB has
  # authority. You can list multiple ranges in a single pool, they
  # will all share the same settings. Each range can be either a
  # CIDR prefix, or an explicit start-end range of IPs.
  addresses:
  - 192.168.10.0/24
  - 192.168.9.1-192.168.9.5
  - fc00:f853:0ccd:e799::/124

IP address pool 적용

kubectl apply -f ./IPAddressPool.yaml -n metallb-system

서비스에 자동으로 할당된 external ip 확인

root@master1:~/template# kubectl get service
NAME         TYPE           CLUSTER-IP     EXTERNAL-IP     PORT(S)          AGE
kubernetes   ClusterIP      10.96.0.1      <none>          443/TCP          3h16m
my-service   LoadBalancer   10.98.29.240   192.168.0.240   8080:32061/TCP   29m