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107 lines
3.6 KiB
Go
107 lines
3.6 KiB
Go
/*
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Copyright 2015 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 e2e
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import (
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"fmt"
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"strings"
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"k8s.io/kubernetes/test/e2e/framework"
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. "github.com/onsi/ginkgo"
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)
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const maxNodes = 100
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var _ = framework.KubeDescribe("SSH", func() {
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f := framework.NewDefaultFramework("ssh")
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BeforeEach(func() {
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// When adding more providers here, also implement their functionality in util.go's framework.GetSigner(...).
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framework.SkipUnlessProviderIs(framework.ProvidersWithSSH...)
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})
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It("should SSH to all nodes and run commands", func() {
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// Get all nodes' external IPs.
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By("Getting all nodes' SSH-able IP addresses")
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hosts, err := framework.NodeSSHHosts(f.Client)
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if err != nil {
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framework.Failf("Error getting node hostnames: %v", err)
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}
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testCases := []struct {
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cmd string
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checkStdout bool
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expectedStdout string
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expectedStderr string
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expectedCode int
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expectedError error
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}{
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// Keep this test first - this variant runs on all nodes.
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{`echo "Hello from $(whoami)@$(hostname)"`, false, "", "", 0, nil},
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{`echo "foo" | grep "bar"`, true, "", "", 1, nil},
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{`echo "Out" && echo "Error" >&2 && exit 7`, true, "Out", "Error", 7, nil},
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}
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for i, testCase := range testCases {
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// Only run the first testcase against max 100 nodes. Run
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// the rest against the first node we find only, since
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// they're basically testing SSH semantics (and we don't
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// need to do that against each host in the cluster).
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nodes := len(hosts)
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if i > 0 {
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nodes = 1
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} else if nodes > maxNodes {
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nodes = maxNodes
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}
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testhosts := hosts[:nodes]
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By(fmt.Sprintf("SSH'ing to %d nodes and running %s", len(testhosts), testCase.cmd))
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for _, host := range testhosts {
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result, err := framework.SSH(testCase.cmd, host, framework.TestContext.Provider)
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stdout, stderr := strings.TrimSpace(result.Stdout), strings.TrimSpace(result.Stderr)
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if err != testCase.expectedError {
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framework.Failf("Ran %s on %s, got error %v, expected %v", testCase.cmd, host, err, testCase.expectedError)
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}
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if testCase.checkStdout && stdout != testCase.expectedStdout {
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framework.Failf("Ran %s on %s, got stdout '%s', expected '%s'", testCase.cmd, host, stdout, testCase.expectedStdout)
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}
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if stderr != testCase.expectedStderr {
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framework.Failf("Ran %s on %s, got stderr '%s', expected '%s'", testCase.cmd, host, stderr, testCase.expectedStderr)
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}
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if result.Code != testCase.expectedCode {
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framework.Failf("Ran %s on %s, got exit code %d, expected %d", testCase.cmd, host, result.Code, testCase.expectedCode)
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}
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// Show stdout, stderr for logging purposes.
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if len(stdout) > 0 {
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framework.Logf("Got stdout from %s: %s", host, strings.TrimSpace(stdout))
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}
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if len(stderr) > 0 {
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framework.Logf("Got stderr from %s: %s", host, strings.TrimSpace(stderr))
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}
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}
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}
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// Quickly test that SSH itself errors correctly.
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By("SSH'ing to a nonexistent host")
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if _, err = framework.SSH(`echo "hello"`, "i.do.not.exist", framework.TestContext.Provider); err == nil {
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framework.Failf("Expected error trying to SSH to nonexistent host.")
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}
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})
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})
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