Automatic merge from submit-queue
Delaying deliverer for Federated ReplicaSet
A helper struct to push data to a channel after a given delay. It runs on a single gouroutine and allows updates. An update cancels previous delivery if it was about to happen later than the new one. Otherwise the new update is discarded.
All data require a string key that is used to identify the data (for updates and de-duplication).
cc: @quinton-hoole @wojtek-t
Automatic merge from submit-queue
Federation: Use equivalent() instead of == to compare DNS ResourceRecordSets. Fixes#28135
Without this we sometimes incorrectly assume that DNS records hosted on cloud DNS servers need to be replaced when they don't need to be. This results in unnecessary churn on DNS records.
cc: @nikhiljindal @madhusudancs @mfanjie FYI
Without this you just get two pointers in the debug log.
Before:
I0627 21:48:44.136615 1 dns.go:215] Existing recordset {0xc820168830 0xc820691540} is not equal to needed recordset &{0xc820168848 0xc820686040}, removing existing and adding needed.
After:
I0627 22:26:46.221856 1 dns.go:215] Existing recordset <(clouddns) "federated-service.e2e-tests-service-cuza5.federation.svc.us-central1-c.us-central1.kube.5yetis.net." type=CNAME rrdatas=["federated-service.e2e-tests-service-cuza5.federation.svc.us-central1.kube.5yetis.net."] ttl=180>
I0627 22:26:46.221885 1 dns.go:216] ... not equal to needed recordset <(clouddns) "federated-service.e2e-tests-service-cuza5.federation.svc.us-central1-c.us-central1.kube.5yetis.net." type=CNAME rrdatas=["federated-service.e2e-tests-service-cuza5.federation.svc.us-central1.kube.5yetis.net."] ttl=180>
I0627 22:26:46.221919 1 dns.go:217] ... removing existing and adding needed.
Automatic merge from submit-queue
Create federation dns zone if missing
1. Added Zones.Add() method to generic dnsprovider interface, as well as Google and AWS implementations.
2. Automatically add the configured zone name to the dnsprovider if it does not already exist.
Automatic merge from submit-queue
Improve error logging on DNS updates for federated services
This makes debugging easier. Prior to this, the logs would e.g. contain "Successfully updated 4 out of 4 DNS records", when in fact zero DNS records had been successfully updated. It's difficult to debug what's happening with such confusing log messages.
Automatic merge from submit-queue
Add federation cluster status zone update
Hi Nikhil
Here's the cluster zone update stuff we discussed today.
What's remaining:
1. Rebase against #26308 (as soon as it merges) to expose the zones and region fields of cluster status.
2. Get hold of a cluster client via which to query nodes in the cluster. Currently we only have a DiscoveryClient, which doesn't know how to list nodes.
Any advice on the latter much appreciated. Specifically how do I get a cluster client from a discovery client?
Q
