func runPortForward(ns, podName string, port int) *portForwardCommand {
cmd := framework.KubectlCmd("port-forward", fmt.Sprintf("--namespace=%v", ns), podName, fmt.Sprintf(":%d", port))
// This is somewhat ugly but is the only way to retrieve the port that was picked
// by the port-forward command. We don't want to hard code the port as we have no
// way of guaranteeing we can pick one that isn't in use, particularly on Jenkins.
framework.Logf("starting port-forward command and streaming output")
_, stderr, err := framework.StartCmdAndStreamOutput(cmd)
if err != nil {
framework.Failf("Failed to start port-forward command: %v", err)
}
buf := make([]byte, 128)
var n int
framework.Logf("reading from `kubectl port-forward` command's stderr")
if n, err = stderr.Read(buf); err != nil {
framework.Failf("Failed to read from kubectl port-forward stderr: %v", err)
}
portForwardOutput := string(buf[:n])
match := portForwardRegexp.FindStringSubmatch(portForwardOutput)
if len(match) != 2 {
framework.Failf("Failed to parse kubectl port-forward output: %s", portForwardOutput)
}
listenPort, err := strconv.Atoi(match[1])
if err != nil {
framework.Failf("Error converting %s to an int: %v", match[1], err)
}
return &portForwardCommand{
cmd: cmd,
port: listenPort,
}
}
func runPortForward(ns, podName string, port int) *portForwardCommand {
cmd := framework.KubectlCmd("port-forward", fmt.Sprintf("--namespace=%v", ns), podName, fmt.Sprintf(":%d", port))
// This is somewhat ugly but is the only way to retrieve the port that was picked
// by the port-forward command. We don't want to hard code the port as we have no
// way of guaranteeing we can pick one that isn't in use, particularly on Jenkins.
framework.Logf("starting port-forward command and streaming output")
stdout, stderr, err := framework.StartCmdAndStreamOutput(cmd)
if err != nil {
framework.Failf("Failed to start port-forward command: %v", err)
}
buf := make([]byte, 128)
// After v1.3.0-alpha.4 (#17030), kubectl port-forward outputs port
// info to stdout, not stderr, so for version-skewed tests, look there
// instead.
var portOutput io.ReadCloser
if useStdOut, err := framework.KubectlVersionGTE(portForwardPortToStdOutV); err != nil {
framework.Failf("Failed to get kubectl version: %v", err)
} else if useStdOut {
portOutput = stdout
} else {
portOutput = stderr
}
var n int
framework.Logf("reading from `kubectl port-forward` command's stdout")
if n, err = portOutput.Read(buf); err != nil {
framework.Failf("Failed to read from kubectl port-forward stdout: %v", err)
}
portForwardOutput := string(buf[:n])
match := portForwardRegexp.FindStringSubmatch(portForwardOutput)
if len(match) != 2 {
framework.Failf("Failed to parse kubectl port-forward output: %s", portForwardOutput)
}
listenPort, err := strconv.Atoi(match[1])
if err != nil {
framework.Failf("Error converting %s to an int: %v", match[1], err)
}
return &portForwardCommand{
cmd: cmd,
port: listenPort,
}
}
func (config *KubeletManagedHostConfig) getEtcHostsContent(podName, containerName string) string {
cmd := framework.KubectlCmd("exec", fmt.Sprintf("--namespace=%v", config.f.Namespace.Name), podName, "-c", containerName, "cat", "/etc/hosts")
stdout, stderr, err := framework.StartCmdAndStreamOutput(cmd)
if err != nil {
framework.Failf("Failed to retrieve /etc/hosts, err: %q", err)
}
defer stdout.Close()
defer stderr.Close()
buf := make([]byte, 1000)
var n int
framework.Logf("reading from `kubectl exec` command's stdout")
if n, err = stdout.Read(buf); err != nil {
framework.Failf("Failed to read from kubectl exec stdout: %v", err)
}
return string(buf[:n])
}
if event.Type != watch.Added {
framework.Failf("Failed to observe pod creation: %v", event)
}
case <-time.After(framework.PodStartTimeout):
Fail("Timeout while waiting for pod creation")
}
// We need to wait for the pod to be running, otherwise the deletion
// may be carried out immediately rather than gracefully.
framework.ExpectNoError(f.WaitForPodRunning(pod.Name))
// save the running pod
pod, err = podClient.Get(pod.Name, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred(), "failed to GET scheduled pod")
// start local proxy, so we can send graceful deletion over query string, rather than body parameter
cmd := framework.KubectlCmd("proxy", "-p", "0")
stdout, stderr, err := framework.StartCmdAndStreamOutput(cmd)
Expect(err).NotTo(HaveOccurred(), "failed to start up proxy")
defer stdout.Close()
defer stderr.Close()
defer framework.TryKill(cmd)
buf := make([]byte, 128)
var n int
n, err = stdout.Read(buf)
Expect(err).NotTo(HaveOccurred(), "failed to read from kubectl proxy stdout")
output := string(buf[:n])
proxyRegexp := regexp.MustCompile("Starting to serve on 127.0.0.1:([0-9]+)")
match := proxyRegexp.FindStringSubmatch(output)
Expect(len(match)).To(Equal(2))
port, err := strconv.Atoi(match[1])
Expect(err).NotTo(HaveOccurred(), "failed to convert port into string")