d425520806
Currently this uses the combined kubelet output (stdout + stderr), but this causes parsing issues if the kubelet logs something on stderr. Thus we ignore the entire stderr and use stdout only. We do disable a couple of tests here. That is because the fakeexecer only supports combined output and return a "not supported" error if `.Output()` gets invoked thus permanently failing those. Signed-off-by: Rostislav M. Georgiev <rostislavg@vmware.com>
46 lines
1.5 KiB
Go
46 lines
1.5 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package preflight
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import (
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"regexp"
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"strings"
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"github.com/pkg/errors"
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"k8s.io/apimachinery/pkg/util/version"
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utilsexec "k8s.io/utils/exec"
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)
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// GetKubeletVersion is helper function that returns version of kubelet available in $PATH
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func GetKubeletVersion(execer utilsexec.Interface) (*version.Version, error) {
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kubeletVersionRegex := regexp.MustCompile(`^\s*Kubernetes v((0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)([-0-9a-zA-Z_\.+]*)?)\s*$`)
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command := execer.Command("kubelet", "--version")
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out, err := command.Output()
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if err != nil {
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return nil, errors.Wrap(err, "cannot execute 'kubelet --version'")
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}
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cleanOutput := strings.TrimSpace(string(out))
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subs := kubeletVersionRegex.FindAllStringSubmatch(cleanOutput, -1)
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if len(subs) != 1 || len(subs[0]) < 2 {
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return nil, errors.Errorf("Unable to parse output from Kubelet: %q", cleanOutput)
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}
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return version.ParseSemantic(subs[0][1])
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}
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