Kubernetes Submit Queue b32e9c4546 Merge pull request #57415 from stealthybox/feature/kubeadm_594-etcd_tls
Automatic merge from submit-queue (batch tested with PRs 59159, 60318, 60079, 59371, 57415). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Feature/kubeadm 594 etcd TLS on init/upgrade

**What this PR does / why we need it**:
On `kubeadm init`/`kubeadm upgrade`, this PR generates certificates for securing local etcd:
- etcd serving cert
- etcd peer cert
- apiserver etcd client cert

Flags and hostMounts are added to the etcd and apiserver static-pods to load these certs.
For connections to etcd, `https` is now used in favor of `http` and tests have been added/updated.

Etcd only listens on localhost, so the serving cert SAN defaults to `DNS:localhost,IP:127.0.0.1`.
The etcd peer cert has SANs for `<hostname>,<api-advertise-address>`, but is unused.

New kubeadm config options, `Etcd.ServerCertSANs` and `Etcd.PeerCertSANs`, are used for user additions to the default certificate SANs for the etcd server and peer certs.

This feature continues to utilize the existence of `MasterConfiguration.Etcd.Endpoints` as a feature gate for external-etcd.
If the user passes flags to configure `Etcd.{CAFile,CertFile,KeyFile}` but they omit `Endpoints`, these flags will be unused, and a warning is printed.

New phase commands:
```
kubeadm alpha phase certs etcd-server
kubeadm alpha phase certs etcd-peer
kubeadm alpha phase certs apiserver-etcd-client 
```

**Which issue(s) this PR fixes**
Fixes https://github.com/kubernetes/kubeadm/issues/594

**Special notes for your reviewer**:

#### on the master
these should fail:
```bash
curl localhost:2379/v2/keys  # no output
curl --cacert /etc/kubernetes/pki/ca.crt https://localhost:2379/v2/keys  # handshake error
```
these should succeed:
```
cd /etc/kubernetes/pki
curl --cacert ca.crt --cert apiserver-etcd-client.crt --key apiserver-etcd-client.key https://localhost:2379/v2/keys
```

**Release note**:
```release-note
On cluster provision or upgrade, kubeadm now generates certs and secures all connections to the etcd static-pod with mTLS.
```
2018-02-24 21:19:42 -08:00
2018-02-23 16:50:43 -05:00
2017-10-12 09:38:56 -07:00
2018-02-23 16:50:44 -05:00
2017-09-09 13:38:29 +08:00
2018-02-06 13:48:18 +08:00
2018-02-01 19:11:19 +08:00
2017-12-20 13:33:36 -05:00
2017-08-10 11:59:54 -07:00
2018-02-11 04:34:01 +00:00
2017-08-11 14:42:36 -04:00

Kubernetes

Submit Queue Widget GoDoc Widget CII Best Practices


Kubernetes is an open source system for managing containerized applications across multiple hosts; providing basic mechanisms for deployment, maintenance, and scaling of applications.

Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale using a system called Borg, combined with best-of-breed ideas and practices from the community.

Kubernetes is hosted by the Cloud Native Computing Foundation (CNCF). If you are a company that wants to help shape the evolution of technologies that are container-packaged, dynamically-scheduled and microservices-oriented, consider joining the CNCF. For details about who's involved and how Kubernetes plays a role, read the CNCF announcement.


To start using Kubernetes

See our documentation on kubernetes.io.

Try our interactive tutorial.

Take a free course on Scalable Microservices with Kubernetes.

To start developing Kubernetes

The community repository hosts all information about building Kubernetes from source, how to contribute code and documentation, who to contact about what, etc.

If you want to build Kubernetes right away there are two options:

You have a working Go environment.
$ go get -d k8s.io/kubernetes
$ cd $GOPATH/src/k8s.io/kubernetes
$ make
You have a working Docker environment.
$ git clone https://github.com/kubernetes/kubernetes
$ cd kubernetes
$ make quick-release

For the full story, head over to the developer's documentation.

Support

If you need support, start with the troubleshooting guide, and work your way through the process that we've outlined.

That said, if you have questions, reach out to us one way or another.

Analytics

Description
No description provided
Readme 1,019 MiB
Languages
Go 97%
Shell 2.6%
PowerShell 0.2%