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cross version upgration support like: v1.20 to v1.24 (#73)
* kubelet restart depends on kubelet-reloader, we need to run it after upgrade-kubeadm * add support for cross version upgrade like v1.21.0 to v1.24.0 * add master toleration for v1.22 and before * fix: no need to upgrade to current minor version * UT: test cross version check * fix cross task order by rename <operaton-name>-<next-verison>-<0x>-<taskname>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| /* | ||
| Copyright 2022 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package operations | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "k8s.io/apimachinery/pkg/util/version" | ||
| ) | ||
|
|
||
| func upgradeCheck(current, target string) (isSupported, isCrossVersion, canSkip bool) { | ||
| currentVer, err := version.ParseSemantic(current) | ||
| if err != nil { | ||
| return false, false, false | ||
| } | ||
| targetVer, err := version.ParseSemantic(target) | ||
| if err != nil { | ||
| return false, false, false | ||
| } | ||
| return upgradeCheckVersion(currentVer, targetVer) | ||
| } | ||
|
|
||
| func upgradeCheckVersion(current, target *version.Version) (isSupported, isCrossVersion, canSkip bool) { | ||
| // no need to check major as only major 1 is supported | ||
| // if current.Major() != target.Major() { | ||
| // return false | ||
| // } | ||
| if current.Minor() == target.Minor() { | ||
| if current.Patch() == target.Patch() { | ||
| // just skip as the version is the same | ||
| return true, false, true | ||
| } | ||
| // upgrade to a patched version | ||
| return true, false, false | ||
| } else if current.Minor() < target.Minor() { | ||
| if current.Minor()+1 == target.Minor() { | ||
| // upgrade to a minor version | ||
| return true, false, false | ||
| } | ||
| // upgrade multi-minor version, need to split into multiple upgrade tasks | ||
| return true, true, false | ||
| } | ||
| // downgrade is not supported | ||
| if current.Minor()-1 == target.Minor() { | ||
| // TODO downgrade to a minor version | ||
| // this is just for test purpose, need to define if it should be supported in the future | ||
| return true, false, false | ||
| } | ||
| return false, false, false | ||
|
|
||
| } | ||
|
|
||
| func isSupported(ver string) bool { | ||
| v, err := version.ParseSemantic(ver) | ||
| if err != nil { | ||
| return false | ||
| } | ||
| return isSupportedVersion(v) | ||
| } | ||
|
|
||
| func isSupportedVersion(ver *version.Version) bool { | ||
| // TODO a table of supported versions needs to be created in the docs | ||
| if ver.Major() != 1 && ver.Minor() < 17 { | ||
| return false | ||
| } | ||
| return true | ||
| } | ||
|
|
||
| // before this, we should make sure the version is supported | ||
| func getCrossVersions(current, target string) []string { | ||
| versions := []string{} | ||
| cur, err := version.ParseSemantic(current) | ||
| if err != nil { | ||
| return versions | ||
| } | ||
| tar, err := version.ParseSemantic(target) | ||
| if err != nil { | ||
| return versions | ||
| } | ||
| _, isCross, _ := upgradeCheckVersion(cur, tar) | ||
| if !isCross { | ||
| return versions | ||
| } | ||
| tarMinor := tar.Minor() | ||
| for i := cur.Minor() + 1; i < tarMinor; i++ { | ||
| versions = append(versions, fmt.Sprintf("v1.%d.0", i)) | ||
| } | ||
| return versions | ||
| } |
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