Automatic merge from submit-queue
kubeadm join: Added support for config file.
As more behavior (#34719, #34807, fix for #33641) is added to `kubeadm join`, this will be eventually very much needed. Makes sense to go in sooner rather than later.
Also references #34501 and #34884.
/cc @luxas @mikedanese
Automatic merge from submit-queue
kubeadm join: wait for API endpoints
**What this PR does / why we need it**: enhance kubeadm to allow for parallel provisioning of API endpoints and slave nodes, continued from https://github.com/kubernetes/kubernetes/pull/33543
**Fixes**: https://github.com/kubernetes/kubernetes/issues/33542
**Special notes for your reviewer**:
* Introduces a concurrent retry mechanism for bootstrapping with a single API endpoint during `kubeadm join` (this was left out in https://github.com/kubernetes/kubernetes/pull/33543 so that it can be implemented in a separate PR). The polling of the discovery service API itself is yet to come.
@errordeveloper @pires
Automatic merge from submit-queue
kubeadm implement preflight checks
Checks that user running kubeamd init and join is root and will only execute
command if user is root. Moved away from using kubectl error handling to
having kubeadm handle its own errors. This should allow kubeadm to have
more meaningful errors, exit codes, and logging for specific kubeadm use
cases.
fixes#33908
Add skip-preflight-checks to known flags.
Fix bug with preflight checks not returning system is-active as errors.
Fix error handling to use correct function.
Includes checks for verifying services exist and are enabled, ports are
open, directories do not exist or are empty, and required binaries are
in the path.
Checks that user running kubeamd init and join is root and will only execute
command if user is root. Moved away from using kubectl error handling to
having kubeadm handle its own errors. This should allow kubeadm to have
more meaningful errors, exit codes, and logging for specific kubeadm use
cases.
Includes checks for verifying services exist and are enabled, ports are
open, directories do not exist or are empty, and required binaries are
in the path.
* `kubeadm join` will now retry to connect to the discovery service
API instead of exit on first failure. Allows for parallel install.
of master and slave nodes.
Automatic merge from submit-queue
Test API more extensivelly before declaring readiness
**What this PR does / why we need it**:
It's possible that first deployment kubeadm creates will hit `deployments.extensions "kube-discovery" is forbidden: not yet ready to handle request`, which comes from NamespaceLifecycle admission controller and has something to do with cache. According to @derekwaynecarr, we need to create a namespace-scoped resource to really check for this. I didn't want to make a check with deployment of whatever comes first right now, and decided to have explicit step for this in `apiclient.go`.
**Which issue this PR fixes**: fixes#34411
**Special notes for your reviewer**: @kubernetes/sig-cluster-lifecycle
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
kubeadm: fix conversion macros and add kubeadm to round trip testing
Tests are probably broken but I'll fix. @jbeda this probably fixes your change unless we decide we need generated deep copies or conversions.
@kubernetes/sig-cluster-lifecycle
Automatic merge from submit-queue
Do not probe so aggressively which may lead to unnecessary restarts
@errordeveloper @mikedanese PTAL
I came across a case where etcd restarted about 5-10 times because the load was very high on the machine.
The load seems to have lead to that the `etcd` container occasionally didn't respond to the probe, which caused many restart and made the whole thing even worse.
Maybe we should remove the etcd probe totally? I don't know, what do you think?
This is at least a try to loosen the limits here...
Automatic merge from submit-queue
Kubeadm: print information about certificates
Prints basic information about certificates to the user.
Example of `kubeadm init` output:
```
<master/pki> generated Certificate Authority key and certificate:
Issuer: CN=kubernetes | Subject: CN=kubernetes | CA: true
Not before: 2016-09-30 11:19:19 +0000 UTC Not After: 2026-09-28 11:19:19 +0000 UTC
Public: /etc/kubernetes/pki/ca-pub.pem
Private: /etc/kubernetes/pki/ca-key.pem
Cert: /etc/kubernetes/pki/ca.pem
<master/pki> generated API Server key and certificate:
Issuer: CN=kubernetes | Subject: CN=kube-apiserver | CA: false
Not before: 2016-09-30 11:19:19 +0000 UTC Not After: 2017-09-30 11:19:19 +0000 UTC
Alternate Names: [172.18.76.239 10.0.0.1 kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.cluster.local]
Public: /etc/kubernetes/pki/apiserver-pub.pem
Private: /etc/kubernetes/pki/apiserver-key.pem
Cert: /etc/kubernetes/pki/apiserver.pem
<master/pki> generated Service Account Signing keys:
Public: /etc/kubernetes/pki/sa-pub.pem
Private: /etc/kubernetes/pki/sa-key.pem
```
Example of `kubeadm join` command:
```
<node/csr> received signed certificate from the API server:
Issuer: CN=kubernetes | Subject: CN=system:node:minion | CA: false
Not before: 2016-09-30 11:28:00 +0000 UTC Not After: 2017-09-30 11:28:00 +0000 UTC
```
Fixes#33642
cc @kubernetes/sig-cluster-lifecycle
Automatic merge from submit-queue
Remove glog added by mistake, start converting phase1+ TODOs to issues
**What this PR does / why we need it**:
Minor cleanup in `cmd/kubeadm/app/node/csr.go`.
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
kubeadm: default to using a private range for service subnet
We are currently using a subnet that is reserved for ISPs. Private network administrators don't control this space. Default to a subnet that private network administrators do control.
@errordeveloper @kubernetes/sig-cluster-lifecycle
