mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-11-03 23:40:03 +00:00
107 lines
3.6 KiB
Go
107 lines
3.6 KiB
Go
/*
|
|
Copyright 2015 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 e2e
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
"k8s.io/kubernetes/test/e2e/framework"
|
|
|
|
. "github.com/onsi/ginkgo"
|
|
)
|
|
|
|
const maxNodes = 100
|
|
|
|
var _ = framework.KubeDescribe("SSH", func() {
|
|
|
|
f := framework.NewDefaultFramework("ssh")
|
|
|
|
BeforeEach(func() {
|
|
// When adding more providers here, also implement their functionality in util.go's framework.GetSigner(...).
|
|
framework.SkipUnlessProviderIs(framework.ProvidersWithSSH...)
|
|
})
|
|
|
|
It("should SSH to all nodes and run commands", func() {
|
|
// Get all nodes' external IPs.
|
|
By("Getting all nodes' SSH-able IP addresses")
|
|
hosts, err := framework.NodeSSHHosts(f.ClientSet)
|
|
if err != nil {
|
|
framework.Failf("Error getting node hostnames: %v", err)
|
|
}
|
|
|
|
testCases := []struct {
|
|
cmd string
|
|
checkStdout bool
|
|
expectedStdout string
|
|
expectedStderr string
|
|
expectedCode int
|
|
expectedError error
|
|
}{
|
|
// Keep this test first - this variant runs on all nodes.
|
|
{`echo "Hello from $(whoami)@$(hostname)"`, false, "", "", 0, nil},
|
|
{`echo "foo" | grep "bar"`, true, "", "", 1, nil},
|
|
{`echo "Out" && echo "Error" >&2 && exit 7`, true, "Out", "Error", 7, nil},
|
|
}
|
|
|
|
for i, testCase := range testCases {
|
|
// Only run the first testcase against max 100 nodes. Run
|
|
// the rest against the first node we find only, since
|
|
// they're basically testing SSH semantics (and we don't
|
|
// need to do that against each host in the cluster).
|
|
nodes := len(hosts)
|
|
if i > 0 {
|
|
nodes = 1
|
|
} else if nodes > maxNodes {
|
|
nodes = maxNodes
|
|
}
|
|
testhosts := hosts[:nodes]
|
|
By(fmt.Sprintf("SSH'ing to %d nodes and running %s", len(testhosts), testCase.cmd))
|
|
|
|
for _, host := range testhosts {
|
|
result, err := framework.SSH(testCase.cmd, host, framework.TestContext.Provider)
|
|
stdout, stderr := strings.TrimSpace(result.Stdout), strings.TrimSpace(result.Stderr)
|
|
if err != testCase.expectedError {
|
|
framework.Failf("Ran %s on %s, got error %v, expected %v", testCase.cmd, host, err, testCase.expectedError)
|
|
}
|
|
if testCase.checkStdout && stdout != testCase.expectedStdout {
|
|
framework.Failf("Ran %s on %s, got stdout '%s', expected '%s'", testCase.cmd, host, stdout, testCase.expectedStdout)
|
|
}
|
|
if stderr != testCase.expectedStderr {
|
|
framework.Failf("Ran %s on %s, got stderr '%s', expected '%s'", testCase.cmd, host, stderr, testCase.expectedStderr)
|
|
}
|
|
if result.Code != testCase.expectedCode {
|
|
framework.Failf("Ran %s on %s, got exit code %d, expected %d", testCase.cmd, host, result.Code, testCase.expectedCode)
|
|
}
|
|
// Show stdout, stderr for logging purposes.
|
|
if len(stdout) > 0 {
|
|
framework.Logf("Got stdout from %s: %s", host, strings.TrimSpace(stdout))
|
|
}
|
|
if len(stderr) > 0 {
|
|
framework.Logf("Got stderr from %s: %s", host, strings.TrimSpace(stderr))
|
|
}
|
|
}
|
|
}
|
|
|
|
// Quickly test that SSH itself errors correctly.
|
|
By("SSH'ing to a nonexistent host")
|
|
if _, err = framework.SSH(`echo "hello"`, "i.do.not.exist", framework.TestContext.Provider); err == nil {
|
|
framework.Failf("Expected error trying to SSH to nonexistent host.")
|
|
}
|
|
})
|
|
})
|