OpenELB:云原生负载均衡器插件
OpenELB 是一个开源的云原生负载均衡器实现,可以在基于裸金属服务器、边缘以及虚拟化的 Kubernetes 环境中使用 LoadBalancer 类型的 Service 对外暴露服务。
在 Kubernetes 中安装 OpenELB
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kubectl apply -f https://raw.githubusercontent.com/openelb/openelb/master/deploy/openelb.yaml
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kubectl get po -n openelb-system
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使用 kubectl 删除 OpenELB
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kubectl delete -f https://raw.githubusercontent.com/openelb/openelb/master/deploy/openelb.yaml
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配置 OpenELB
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kubectl edit configmap kube-proxy -n kube-system
# 修改 网卡
ipvs:
strictARP: true
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重启组件
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kubectl rollout restart daemonset kube-proxy -n kube-system
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为 master1 节点添加一个 annotation 来指定网卡:
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kubectl annotate nodes master1 layer2.openelb.kubesphere.io/v1alpha1="192.168.0.2"
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创建地址池 layer2-eip.yaml
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apiVersion: network.kubesphere.io/v1alpha2
kind: Eip
metadata:
name: layer2-eip
spec:
address: 192.168.0.91-192.168.0.100
interface: eth0
protocol: layer2
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创建部署 jobcher-service.yaml
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#暴露端口
apiVersion: v1
kind: Service
metadata:
name: jobcher-service
annotations:
lb.kubesphere.io/v1alpha1: openelb
protocol.openelb.kubesphere.io/v1alpha1: layer2
eip.openelb.kubesphere.io/v1alpha2: layer2-eip
labels:
app: jobcher-blog
spec:
selector:
app: jobcher-blog
ports:
- name: jobcher-port
protocol: TCP
port: 80
targetPort: 80
type: LoadBalancer
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