Feature: Support muti cluster service dns and ingress dns

[swiftslee]

Feature Description

• Create an Ingress object once and can visit the same ingress host(highly available) in any cluster
• Create a loadbalancer svc object once and can visit the same svc name host(highly available) in any cluster

How does it work

Svc DNS

• Firstly create FederatedDeployment and FederatedService objects(user can do that by creating a workload on ks console)

• Secondly create Domain(eg: foo.bar.com) and ServiceDNSRecord objects(the name of the svc and domain name)

• Thirdly a DNSEndpoint object(hostname and ip relationships) will be created by the DNS Endpoint Controller

• Finally ExternalDNS will update the dns record to the etcd and coredns will update itself from etcd

  

Ingress DNS

• Firstly create FederatedDeployment and FederatedService and FederatedIngress objects(user can do that by creating a workload svc on ks console)

• Secondly create IngressDNSRecord object

• Thirdly a DNSEndpoint object will be created by the DNS Endpoint Controller

• Finally ExternalDNS will update the dns record to the etcd and coredns will update itself from etcd

  

Limitations

• The type of svc must be LoadBalancer
• Extra etcd cluster to store data
• Individual dns server such as coredns or other public cloud provider
• Extra external-dns pod in host cluster
• Nodes must have region and zone lables

Potential risk

• The kubefed community is discussing remove FederatedIngress& CrossClusterDiscovery feature #284 pull

[swiftslee]

/kind feature

[swiftslee]

Kubefed community has disabled those two features by default and will remove them in the feature.

[luoMonkeyKing]

Kubefed community has disabled those two features by default and will remove them in the feature.

Hello, I found that these two functions have been deleted in the v.7.0 version. Is there any other way to achieve the same function? I also did not find any relevant operation cases in the new version of kubefed documentation.

[swiftslee]

Kubefed community has disabled those two features by default and will remove them in the feature.

Hello, I found that these two functions have been deleted in the v.7.0 version. Is there any other way to achieve the same function? I also did not find any relevant operation cases in the new version of kubefed documentation.

Hey brother. If you are interested in this feature, we can have a talk on slack. https://kubesphere.slack.com/archives/CBJ1A2UCB

[luoMonkeyKing]

Kubefed community has disabled those two features by default and will remove them in the feature.

Hello, I found that these two functions have been deleted in the v.7.0 version. Is there any other way to achieve the same function? I also did not find any relevant operation cases in the new version of kubefed documentation.

Hey brother. If you are interested in this feature, we can have a talk on slack. https://kubesphere.slack.com/archives/CBJ1A2UCB

Okay, but I can’t log in to the link you sent. Do I need to add my email to the workspace? My mailbox luomonkeyking@gmail.com

[FeynmanZhou]

Kubefed community has disabled those two features by default and will remove them in the feature.

Hello, I found that these two functions have been deleted in the v.7.0 version. Is there any other way to achieve the same function? I also did not find any relevant operation cases in the new version of kubefed documentation.

Hey brother. If you are interested in this feature, we can have a talk on slack. https://kubesphere.slack.com/archives/CBJ1A2UCB

Okay, but I can’t log in to the link you sent. Do I need to add my email to the workspace? My mailbox luomonkeyking@gmail.com

@luoMonkeyKing You can try this link, or join the KubeSphere community on the WeChat group (The entry is on https://kubesphere.io).