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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
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Make UnsafeConversion fast by inlining copies
Not ready yet (need to add a copy to "safe" conversion and add mutation tests to roundtrip api/serialization_test).
Cuts another 10% off decode and encode.
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federation: replacing string credentials field by secretRef
Fixes https://github.com/kubernetes/kubernetes/issues/25761
Replaced the string Credentials field in ClusterSpec by secretRef as discussed in https://github.com/kubernetes/kubernetes/issues/25761.
Also updated the clusterController to use this new secretRef field while creating a client to talk to a k8s cluster.
cc @lavalamp @kubernetes/sig-cluster-federation
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Renaming federated-apiserver to federation-apiserver
Its not a "federated" apiserver. Its an apiserver for federation.
The corresponding controller manager is also called federation-controller-manager.
If we are going to rename, it should be done in 1.3 before people write scripts referencing the binary name.
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kube-apiserver options should be decoupled from impls
A few months ago we refactored options to keep it independent of the
implementations, so that it could be used in CLI tools to validate
config or to generate config, without pulling in the full dependency
tree of the master. This change restores that by separating
server_run_options.go back to its own package.
Also, options structs should never contain non-serializable types, which
storagebackend.Config was doing with runtime.Codec. Split the codec out.
Fix a typo on the name of the etcd2.go storage backend.
Finally, move DefaultStorageMediaType to server_run_options.
@nikhiljindal as per my comment in #24454, @liggitt because you and I
discussed this last time
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Make name validators return string slices
Part of the larger validation PR, broken out for easier review and merge. Builds on previous PRs in the series.
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Implement the cluster-controller of kubernetes federation
This PR is the cluster-controller of kubernetes federation.
This controller of federation phase 1 just collect the status of federated clusters.
A few months ago we refactored options to keep it independent of the
implementations, so that it could be used in CLI tools to validate
config or to generate config, without pulling in the full dependency
tree of the master. This change restores that by separating
server_run_options.go back to its own package.
Also, options structs should never contain non-serializable types, which
storagebackend.Config was doing with runtime.Codec. Split the codec out.
Fix a typo on the name of the etcd2.go storage backend.
Finally, move DefaultStorageMediaType to server_run_options.
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Moving federation-apiserver to use genericapiserver.ServerRunOptions and deleting federation-apiserver options
The remaining params were related to authz and authn and one parameter for WatchCacheSize.
Have moved them to genericapiserver.ServerRunOptions and now federation-apiserver can just use genericapiserver.ServerRunOptions()
cc @jianhuiz @kubernetes/sig-cluster-federation
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Adding Services to federation clientset
Commits:
1. Regenerate the client without any changes to client-gen
2. Update clientgen to add a parameter to specify generating client only for Services v1 object.
3. Regenerate federation_internalclientset
4. Regenerate federation_release_1_3
Second commit is the most important one. Other 3 commits are auto generated by running client-gen.
I have added a command line argument to client-gen that takes in a list of group/version/resource. If a group version is part of this list, then only the resources in this list are included in the client. For other group versions, the existing check of genclient=true in types.go is used.
Other alternatives considered were:
* Update genclient in types.go to mention the clientset name in which it should be included instead of just saying genclient=true (so Services will say genclient=core,federation while all other v1 resources will say genclient=core). This requires a code change in types.go to change a client set.
* Create another types.go which will only include Services and use that to generate federation clientset. This will lead to duplicate Service definition.
cc @caesarxuchao @lavalamp @jianhuiz @mfanjie @kubernetes/sig-cluster-federation
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Updating hack/update-codegen to keep federation_clientset updated
Right now, there is no check for this and hence federation_clientset becomes stale over time.
Updating hack/update-codegen to keep federation_clientset updated.
hack/verify-codegen.sh ensures that it is updated.
cc @caesarxuchao @lavalamp @jianhuiz @kubernetes/sig-cluster-federation
