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做外贸网站报价单,网站建设实力宣传海报,做电影资源网站手机版,网站在线建设方案openelb的介绍具体根据官方文档进行安装官方文档,这里作为测试环境的安装使用. 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。OpenELB 项目最初由 KubeSphere 社区…

openelb的介绍

具体根据官方文档进行安装官方文档,这里作为测试环境的安装使用.
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。OpenELB 项目最初由 KubeSphere 社区发起，目前已作为 CNCF 沙箱项目加入 CNCF 基金会，由 OpenELB 开源社区维护与支持。
与MetalLB类似，OpenELB也拥有两种主要工作模式：Layer2模式和BGP模式。OpenELB的BGP模式目前暂不支持IPv6。

layer2 Mode
BGP Mode

准备k8s的环境

千云物流测试环境部署使用openelb部署.

所需要的软件&版本	对应依赖软件版本
linux [CentOS]	7.9.2009
kubernetes	v1.22.12
docker [20.10.8]	20.10.8
openelb	kubesphere/openelb:v0.5.1

准备Layer2 Mode配置

配置ARP参数
部署Layer2模式需要把k8s集群中的ipvs配置打开strictARP，

strict ARP configure arp_ignore and arp_announce to avoid answering ARP queries from kube-ipvs0 interface

# 查看kube-proxy中的strictARP配置
$ kubectl get configmap -n kube-system kube-proxy -o yaml | grep strictARP
#strictARP: false# 手动修改strictARP配置为true
$ kubectl edit configmap -n kube-system kube-proxy
configmap/kube-proxy edited# 使用命令直接修改并对比不同
$ kubectl get configmap kube-proxy -n kube-system -o yaml | sed -e "s/strictARP: false/strictARP: true/" | kubectl diff -f - -n kube-system# 确认无误后使用命令直接修改并生效
$ kubectl get configmap kube-proxy -n kube-system -o yaml | sed -e "s/strictARP: false/strictARP: true/" | kubectl apply -f - -n kube-system# 重启kube-proxy确保配置生效
$ kubectl rollout restart ds kube-proxy -n kube-system# 确认配置生效
$ kubectl get configmap -n kube-system kube-proxy -o yaml | grep strictARPstrictARP: true

开启之后k8s集群中的kube-proxy会停止响应kube-ipvs0网卡之外的其他网卡的arp请求，而由MetalLB接手处理。
strict ARP开启之后相当于把将arp_ignore设置为1;并将arp_announce设置为2启用严格的ARP，这个原理和LVS中的DR模式对RS的配置一样，可以参考之前的文章中的解释。

网卡配置

在这里插入图片描述

#多个网卡，需要指定master节点IP,一个网卡不需要
# kubectl annotate nodes k8s-master01 layer2.openelb.kubesphere.io/v1alpha1="masterip"

创建EIP

接下来我们需要配置loadbalancerIP所在的网段资源，这里我们创建一个Eip对象来进行定义，后面对IP段的管理也是在这里进行。

部署eip

apiVersion: network.kubesphere.io/v1alpha2
kind: Eip
metadata:# Eip 对象的名称。name: layer2-eip
spec:# Eip 对象的地址池address: 10.0.0.122-10.0.0.123# openELB的运行模式，默认为bgpprotocol: layer2# OpenELB 在其上侦听 ARP/NDP 请求的网卡。该字段仅在protocol设置为时有效layer2。interface: ens160# 指定是否禁用 Eip 对象# false表示可以继续分配# true表示不再继续分配disable: false
status:# 指定 Eip 对象中的IP地址是否已用完。occupied: false# 指定 Eip 对象中有多少个 IP 地址已分配给服务。# 直接留空，系统会自动生成usage:# Eip 对象中的 IP 地址总数。poolSize: 2# 指定使用的 IP 地址和使用 IP 地址的服务。服务以Namespace/Service name格式显示（例如，default/test-svc）。# 直接留空，系统会自动生成used:# Eip 对象中的第一个 IP 地址。firstIP: 10.0.0.122# Eip 对象中的最后一个 IP 地址。lastIP: 10.0.0.123ready: true# 指定IP协议栈是否为 IPv4。目前，OpenELB 仅支持 IPv4，其值只能是true.v4: true

检查eip状态

 kubectl apply -f openelb/openelb-eip.yaml#部署完成后检查eip的状态kubectl get eip

部署openelb

这里我们还是使用yaml进行部署，官方把所有部署的资源整合到了一个文件中，我们还是老规矩先下载到本地再进行部署

apiVersion: v1
kind: Namespace
metadata:name: openelb-system
---
apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
metadata:annotations:controller-gen.kubebuilder.io/version: v0.4.0creationTimestamp: nullname: bgpconfs.network.kubesphere.io
spec:group: network.kubesphere.ionames:kind: BgpConflistKind: BgpConfListplural: bgpconfssingular: bgpconfscope: Clusterversions:- name: v1alpha1schema:openAPIV3Schema:description: BgpConf is the Schema for the bgpconfs APIproperties:apiVersion:description: 'APIVersion defines the versioned schema of this representationof an object. Servers should convert recognized schemas to the latestinternal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'type: stringkind:description: 'Kind is a string value representing the REST resource thisobject represents. Servers may infer this from the endpoint the clientsubmits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'type: stringmetadata:type: objectspec:description: struct for container bgp:config. Configuration parametersrelating to the global BGP router.properties:as:description: original -> bgp:as bgp:as's original type is inet:as-number.Local autonomous system number of the router.  Uses the 32-bit as-numbertype from the model in RFC 6991.format: int32type: integerport:description: original -> gobgp:portformat: int32maximum: 65535minimum: 1type: integerrouterID:description: original -> bgp:router-id bgp:router-id's original typeis inet:ipv4-address. Router id of the router, expressed as an 32-bitvalue, IPv4 address.pattern: ^([0-9]{1,3}\.){3}[0-9]{1,3}$type: stringrequired:- as- port- routerIDtype: objectstatus:description: BgpConfStatus defines the observed state of BgpConftype: objecttype: objectserved: truestorage: false- name: v1alpha2schema:openAPIV3Schema:description: BgpConf is the Schema for the bgpconfs APIproperties:apiVersion:description: 'APIVersion defines the versioned schema of this representationof an object. Servers should convert recognized schemas to the latestinternal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'type: stringkind:description: 'Kind is a string value representing the REST resource thisobject represents. Servers may infer this from the endpoint the clientsubmits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'type: stringmetadata:type: objectspec:description: Configuration parameters relating to the global BGP router.properties:as:format: int32type: integerasPerRack:additionalProperties:format: int32type: integertype: objectfamilies:items:format: int32type: integertype: arraygracefulRestart:properties:deferralTime:format: int32type: integerenabled:type: booleanhelperOnly:type: booleanlocalRestarting:type: booleanlonglivedEnabled:type: booleanmode:type: stringnotificationEnabled:type: booleanpeerRestartTime:format: int32type: integerpeerRestarting:type: booleanrestartTime:format: int32type: integerstaleRoutesTime:format: int32type: integertype: objectlistenAddresses:items:type: stringtype: arraylistenPort:format: int32type: integerpolicy:type: stringrouterId:type: stringuseMultiplePaths:type: booleantype: objectstatus:description: BgpConfStatus defines the observed state of BgpConfproperties:nodesConfStatus:additionalProperties:properties:as:format: int32type: integerrouterId:type: stringtype: objecttype: objecttype: objecttype: objectserved: truestorage: truesubresources:status: {}
status:acceptedNames:kind: ""plural: ""conditions: []storedVersions: []
---
apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
metadata:annotations:controller-gen.kubebuilder.io/version: v0.4.0creationTimestamp: nullname: bgppeers.network.kubesphere.io
spec:group: network.kubesphere.ionames:kind: BgpPeerlistKind: BgpPeerListplural: bgppeerssingular: bgppeerscope: Clusterversions:- name: v1alpha1schema:openAPIV3Schema:description: BgpPeer is the Schema for the bgppeers APIproperties:apiVersion:description: 'APIVersion defines the versioned schema of this representationof an object. Servers should convert recognized schemas to the latestinternal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'type: stringkind:description: 'Kind is a string value representing the REST resource thisobject represents. Servers may infer this from the endpoint the clientsubmits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'type: stringmetadata:type: objectspec:properties:addPaths:description: original -> bgp:add-paths Parameters relating to theadvertisement and receipt of multiple paths for a single NLRI (add-paths).properties:sendMax:description: original -> bgp:send-max The maximum number of pathsto advertise to neighbors for a single NLRI.type: integertype: objectconfig:description: original -> bgp:neighbor-address original -> bgp: