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Change default clusterCIDRs from /16 to /14 in GCE configs allowing 1000 Node clusters by default.
cc @thockin @roberthbailey @wojtek-t @zmerlynn @davidopp
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GCI: Add two GCI specific metadata pairs
This PR adds two GCI specific metadata pairs when using GCI image.
(1) "gci-update-strategy": by default the GCI in-place updater is enabled. It means that when a new image is released, the instance on the old image will be upgraded to the new image. In this change, we turn it off;
(2) "gci-ensure-gke-docker": GCI is built with two versions of docker. When this metadata is set to "true", the version satisfying kubernetes qualification will be used. Setting this metadata prevents from using incorrect docker version.
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Fix detect-node-names to not error out if there are no nodes
Fixes#21564.
Teardown was not working correctly in rare cases because `detect-node-names` was failing before any of the actual cleanup was run. I'm pretty sure the issue was that there was an instance group, but no instances in the instance group, so we bailed out when we tried to expand the bash array.
This PR adds a guard so we don't bail if the array is empty.
cc @jlowdermilk @spxtr
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Add support for running clusters on GCI
Google Container-VM Image (GCI) is the next revision of Container-VM. See documentation at https://cloud.google.com/compute/docs/containers/vm-image/. This change adds support for starting a Kubernetes cluster using GCI.
With this change, users can start a kubernetes cluster using the latest kubelet and kubectl release binary built in the GCI image by running:
$ KUBE_OS_DISTRIBUTION="gci" cluster/kube-up.sh
Or run a testing cluster on GCI by running:
$ KUBE_OS_DISTRIBUTION="gci" go run hack/e2e.go -v --up
The commands above will choose the latest GCI image by default.
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Switch to ABAC authorization from AllowAll
Switch from AllowAll to ABAC. All existing identities (that are created by deployment scripts) are given full permissions through ABAC. Manually created identities will need policies added to the `policy.jsonl` file on the master.
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don't source the kube-env in addon-manager
This was added in 2feb658ed7 which became unused after #23603 but wasn't removed
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Trusty: Add debug supports for docker and kubelet
This PR adds debug support in two aspects: (1) For a test cluster, docker command will have "--debug" flag. Recently we noticed that this is very helpful in debug e2e test failures; (2) The kubelet command line will be put in /etc/default/kubelet. If a developer wants to test kubelet flags without recreating a cluster, she/he only needs to revise this file and then run "initctl restart kubelet". In addition, this PR fixes a couple of small things like comments and alignment.
Test result:
(1) Manually verified changing /etc/default/kubelet and run "initctl restart kubelet";
(2) Verified docker command line flag "--debug";
(3) e2e on pure trusty cluster and hybrid cluster all passed.
@roberthbailey @dchen1107 @zmerlynn please review it.
cc/ @yujuhong @fabioy @wonderfly FYI.
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Trusty: Add retry in curl commands
This fix is for improving robustness in fetch critical metadata files when the metadata server is temporarily unreachable.
@roberthbailey @zmerlynn @dchen1107 please review it.
cc/ @fabioy @wonderfly FYI.
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jenkins: Allow configuration of release bucket
This allows others to leverage the existing E2E code to test some
patched kube binary by simply overriding the bucket and reusing many of
the existing scripts
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Trusty: Handle the new var in kube-proxy manifest
This is to capture the kube-proxy manifest change in PR #24429.
@roberthbailey @fabioy @zmerlynn please review this change and mark it as cherry pick candidate. We need to catch up 1.2.3 release.
cc/ @dchen1107 @wonderfly @cjcullen FYI.
I have verified this fix. Without this fix, kube-proxy pod in Trusty nodes cannot be started correctly, i.e., the command line has an unhadled variable. And some other kube-system pods do not work correctly as kube-proxy is not working well. After applying this fix, kube-proxy can be started correctly, and all kube-system pods run successfully.
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Strip comments from configure-vm.sh for gce
We are getting very close to the 32KiB limit on GCE metadata entry length. We used to strip comments before putting the value in metadata, but I think we removed it in a refactor because it wasn't absolutely necessary, and leaving it out made the scripts slightly cleaner. It's close to being necessary again.
Removing comments reduces the size from 31,609B to 27,221B: https://www.diffchecker.com/0xmmecvw.
Jeff Lowdermilk