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Merge pull request #4963 from roberthbailey/kubectl-proxy

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Remove host ports from the update demo and update tests (take 2).
This commit is contained in:
Jeff Lowdermilk 2015-03-02 15:16:04 -08:00
commit 66dfbe900a
8 changed files with 85 additions and 49 deletions
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1
cluster/gce/util.sh
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@ -804,6 +804,7 @@ function test-setup {
detect-project detect-project
# Open up port 80 & 8080 so common containers on minions can be reached # Open up port 80 & 8080 so common containers on minions can be reached
# TODO(roberthbailey): Remove this once we are no longer relying on hostPorts.
gcloud compute firewall-rules create \ gcloud compute firewall-rules create \
--project "${PROJECT}" \ --project "${PROJECT}" \
--target-tags "${MINION_TAG}" \ --target-tags "${MINION_TAG}" \

16
examples/update-demo/README.md
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@ -26,28 +26,20 @@ $ cd kubernetes
$ hack/dev-build-and-up.sh $ hack/dev-build-and-up.sh
``` ```
If you are running your cluster on GCE (the default), you may need to open the firewall for port 8080 using the [console](https://console.developer.google.com) or the `gcloud` tool. The following command will allow traffic from any source to instances tagged `kubernetes-minion`:
```bash
$ gcloud compute firewall-rules create \
--allow tcp:8080 --target-tags=kubernetes-minion \
kubernetes-minion-8080
```
### Step One: Turn up the UX for the demo ### Step One: Turn up the UX for the demo
You can use bash job control to run this in the background. This can sometimes spew to the output so you could also run it in a different terminal. You can use bash job control to run this in the background (note that you must use the default port -- 8001 -- for the following demonstration to work properly). This can sometimes spew to the output so you could also run it in a different terminal.
``` ```
$ ./cluster/kubectl.sh proxy --www=local/ & $ ./cluster/kubectl.sh proxy --www=examples/update-demo/local/ &
+ ./cluster/kubectl.sh proxy --www=local/ + ./cluster/kubectl.sh proxy --www=examples/update-demo/local/
I0218 15:18:31.623279 67480 proxy.go:36] Starting to serve on localhost:8001 I0218 15:18:31.623279 67480 proxy.go:36] Starting to serve on localhost:8001
``` ```
Now visit the the [demo website](http://localhost:8001/static). You won't see anything much quite yet. Now visit the the [demo website](http://localhost:8001/static). You won't see anything much quite yet.
### Step Two: Run the controller ### Step Two: Run the controller
Now we will turn up two replicas of an image. They all serve on port 8080, mapped to internal port 80 Now we will turn up two replicas of an image. They all serve on internal port 80.
```bash ```bash
$ ./cluster/kubectl.sh create -f examples/update-demo/nautilus-rc.yaml $ ./cluster/kubectl.sh create -f examples/update-demo/nautilus-rc.yaml

3
examples/update-demo/kitten-rc.yaml
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@ -12,8 +12,7 @@ desiredState:
- name: update-demo - name: update-demo
image: kubernetes/update-demo:kitten image: kubernetes/update-demo:kitten
ports: ports:
- hostPort: 8080 - containerPort: 80
containerPort: 80
protocol: TCP protocol: TCP
labels: labels:
name: update-demo name: update-demo

8
examples/update-demo/local/angular.min.js.map Normal file
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6
examples/update-demo/local/index.html
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@ -22,9 +22,9 @@ limitations under the License.
</head> </head>
<body ng-controller="ButtonsCtrl"> <body ng-controller="ButtonsCtrl">
<div ng-repeat="server in servers" class="pod"> <div ng-repeat="server in servers" class="pod">
<img src="http://{{server.ip}}:8080/{{server.image}}" height="100px" width="100px" /> <img src="http://localhost:8001/api/v1beta1/proxy/pods/{{server.podId}}/{{server.image}}" height="100px" width="100px" />
<b>ID:</b> {{server.id}}<br> <b>ID:</b> {{server.podId}}<br>
<b>Host:</b> <a href="http://{{server.ip}}:8080/data.json">{{server.host}}</a><br> <b>Host:</b> <a href="http://localhost:8001/api/v1beta1/proxy/pods/{{server.podId}}/data.json">{{server.host}}</a><br>
<b>Status:</b> {{server.status}}<br> <b>Status:</b> {{server.status}}<br>
<b>Image:</b> {{server.dockerImage}}<br> <b>Image:</b> {{server.dockerImage}}<br>
<b>Labels:</b> <b>Labels:</b>

16
examples/update-demo/local/script.js
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@ -17,27 +17,25 @@ limitations under the License.
var base = "http://localhost:8001/api/v1beta1/"; var base = "http://localhost:8001/api/v1beta1/";
var updateImage = function($http, server) { var updateImage = function($http, server) {
$http.get("http://" + server.ip + ":8080/data.json") $http.get(base + "proxy/pods/" + server.podId + "/data.json")
.success(function(data) { .success(function(data) {
server.image = data.image;
console.log(data); console.log(data);
server.image = data.image;
}) })
.error(function(data) { .error(function(data) {
server.image = "";
console.log(data); console.log(data);
server.image = "";
}); });
}; };
var updateServer = function($http, server) { var updateServer = function($http, server) {
$http.get(base + "pods/" + server.id) $http.get(base + "pods/" + server.podId)
.success(function(data) { .success(function(data) {
console.log(data); console.log(data);
server.ip = data.currentState.hostIP;
server.labels = data.labels; server.labels = data.labels;
server.host = data.currentState.host.split('.')[0]; server.host = data.currentState.host.split('.')[0];
server.status = data.currentState.status; server.status = data.currentState.status;
server.dockerImage = data.currentState.info["update-demo"].image;
server.dockerImage = data.currentState.info["update-demo"].Image;
updateImage($http, server); updateImage($http, server);
}) })
.error(function(data) { .error(function(data) {
@ -62,7 +60,7 @@ var ButtonsCtrl = function ($scope, $http, $interval) {
var getServer = function($scope, id) { var getServer = function($scope, id) {
var servers = $scope.servers; var servers = $scope.servers;
for (var i = 0; i < servers.length; ++i) { for (var i = 0; i < servers.length; ++i) {
if (servers[i].id == id) { if (servers[i].podId == id) {
return servers[i]; return servers[i];
} }
} }
@ -89,7 +87,7 @@ var update = function($scope, $http) {
} }
var server = getServer($scope, pod.id); var server = getServer($scope, pod.id);
if (server == null) { if (server == null) {
server = { "id": pod.id }; server = { "podId": pod.id };
} }
newServers.push(server); newServers.push(server);
} }

3
examples/update-demo/nautilus-rc.yaml
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@ -13,8 +13,7 @@ desiredState:
- name: update-demo - name: update-demo
image: kubernetes/update-demo:nautilus image: kubernetes/update-demo:nautilus
ports: ports:
- hostPort: 8080 - containerPort: 80
containerPort: 80
protocol: TCP protocol: TCP
labels: labels:
name: update-demo name: update-demo

81
test/e2e/kubectl.go
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@ -22,6 +22,7 @@ import (
"fmt" "fmt"
"io/ioutil" "io/ioutil"
"net/http" "net/http"
"os"
"os/exec" "os/exec"
"path/filepath" "path/filepath"
"strings" "strings"
@ -36,13 +37,50 @@ const (
updateDemoSelector = "name=update-demo" updateDemoSelector = "name=update-demo"
updateDemoContainer = "update-demo" updateDemoContainer = "update-demo"
validateTimeout = 60 * time.Second validateTimeout = 60 * time.Second
kubectlProxyPort = 8011
) )
var _ = Describe("kubectl", func() { var _ = Describe("kubectl", func() {
updateDemoRoot := filepath.Join(testContext.repoRoot, "examples/update-demo") // Constants.
nautilusPath := filepath.Join(updateDemoRoot, "nautilus-rc.yaml") var (
kittenPath := filepath.Join(updateDemoRoot, "kitten-rc.yaml") updateDemoRoot = filepath.Join(testContext.repoRoot, "examples/update-demo")
nautilusPath = filepath.Join(updateDemoRoot, "nautilus-rc.yaml")
kittenPath = filepath.Join(updateDemoRoot, "kitten-rc.yaml")
)
var cmd *exec.Cmd
BeforeEach(func() {
cmd = kubectlCmd("proxy", fmt.Sprintf("--port=%d", kubectlProxyPort))
if err := cmd.Start(); err != nil {
Failf("Unable to start kubectl proxy: %v", err)
}
})
AfterEach(func() {
if cmd.Process == nil {
Logf("No process associated with the kubectl proxy")
return
}
// Kill the proxy
errChan := make(chan error, 1)
go func() {
if err := cmd.Process.Signal(os.Interrupt); err != nil {
errChan <- err
}
_, err := cmd.Process.Wait()
errChan <- err
}()
select {
case <-time.After(10 * time.Second):
Fail("Timed out waiting for kubectl proxy process to exit")
case err := <-errChan:
if err != nil {
Failf("Unable to kill kubectl proxy: %v", err)
}
}
})
It("should create and stop a replication controller", func() { It("should create and stop a replication controller", func() {
defer cleanup(nautilusPath) defer cleanup(nautilusPath)
@ -107,8 +145,6 @@ func validateController(image string, replicas int) {
getImageTemplate := fmt.Sprintf(`--template={{(index .currentState.info "%s").image}}`, updateDemoContainer) getImageTemplate := fmt.Sprintf(`--template={{(index .currentState.info "%s").image}}`, updateDemoContainer)
getHostIPTemplate := "--template={{.currentState.hostIP}}"
By(fmt.Sprintf("waiting for all containers in %s pods to come up.", updateDemoSelector)) By(fmt.Sprintf("waiting for all containers in %s pods to come up.", updateDemoSelector))
for start := time.Now(); time.Since(start) < validateTimeout; time.Sleep(5 * time.Second) { for start := time.Now(); time.Since(start) < validateTimeout; time.Sleep(5 * time.Second) {
getPodsOutput := runKubectl("get", "pods", "-o", "template", getPodsTemplate, "-l", updateDemoSelector) getPodsOutput := runKubectl("get", "pods", "-o", "template", getPodsTemplate, "-l", updateDemoSelector)
@ -118,32 +154,31 @@ func validateController(image string, replicas int) {
continue continue
} }
var runningPods []string var runningPods []string
for _, podId := range pods { for _, podID := range pods {
running := runKubectl("get", "pods", podId, "-o", "template", getContainerStateTemplate) running := runKubectl("get", "pods", podID, "-o", "template", getContainerStateTemplate)
if running == "false" { if running == "false" {
By(fmt.Sprintf("%s is created but not running", podId)) Logf("%s is created but not running", podID)
continue continue
} }
currentImage := runKubectl("get", "pods", podId, "-o", "template", getImageTemplate) currentImage := runKubectl("get", "pods", podID, "-o", "template", getImageTemplate)
if currentImage != image { if currentImage != image {
By(fmt.Sprintf("%s is created but running wrong image; expected: %s, actual: %s", podId, image, currentImage)) Logf("%s is created but running wrong image; expected: %s, actual: %s", podID, image, currentImage)
continue continue
} }
hostIP := runKubectl("get", "pods", podId, "-o", "template", getHostIPTemplate) data, err := getData(podID)
data, err := getData(hostIP)
if err != nil { if err != nil {
By(fmt.Sprintf("%s is running right image but fetching data failed: %v", podId, err)) Logf("%s is running right image but fetching data failed: %v", podID, err)
continue continue
} }
if strings.Contains(data.image, image) { if strings.Contains(data.image, image) {
By(fmt.Sprintf("%s is running right image but fetched data has the wrong info: %s", podId, data)) Logf("%s is running right image but fetched data has the wrong info: %s", podID, data)
continue continue
} }
Logf("%s is verified up and running", podId) Logf("%s is verified up and running", podID)
runningPods = append(runningPods, podId) runningPods = append(runningPods, podID)
} }
if len(runningPods) == replicas { if len(runningPods) == replicas {
return return
@ -156,9 +191,8 @@ type updateDemoData struct {
image string `json:"image"` image string `json:"image"`
} }
func getData(hostIP string) (*updateDemoData, error) { func getData(podID string) (*updateDemoData, error) {
addr := fmt.Sprintf("http://%s:8080/data.json", hostIP) resp, err := http.Get(fmt.Sprintf("http://localhost:%d/api/v1beta1/proxy/pods/%s/data.json", kubectlProxyPort, podID))
resp, err := http.Get(fmt.Sprintf(addr))
if err != nil || resp.StatusCode != 200 { if err != nil || resp.StatusCode != 200 {
return nil, err return nil, err
} }
@ -173,7 +207,7 @@ func getData(hostIP string) (*updateDemoData, error) {
return &data, err return &data, err
} }
func runKubectl(args ...string) string { func kubectlCmd(args ...string) *exec.Cmd {
defaultArgs := []string{"--auth-path=" + testContext.authConfig} defaultArgs := []string{"--auth-path=" + testContext.authConfig}
if testContext.certDir != "" { if testContext.certDir != "" {
defaultArgs = append(defaultArgs, defaultArgs = append(defaultArgs,
@ -186,9 +220,14 @@ func runKubectl(args ...string) string {
if testContext.provider == "gke" { if testContext.provider == "gke" {
kubectlArgs = append(kubectlArgs, "--server="+testContext.host) kubectlArgs = append(kubectlArgs, "--server="+testContext.host)
} }
Logf("Running 'kubectl %v'", strings.Join(kubectlArgs, " "))
cmd := exec.Command("kubectl", kubectlArgs...) cmd := exec.Command("kubectl", kubectlArgs...)
Logf("Running '%s %s'", cmd.Path, strings.Join(cmd.Args, " "))
return cmd
}
func runKubectl(args ...string) string {
var stdout, stderr bytes.Buffer var stdout, stderr bytes.Buffer
cmd := kubectlCmd(args...)
cmd.Stdout, cmd.Stderr = &stdout, &stderr cmd.Stdout, cmd.Stderr = &stdout, &stderr
if err := cmd.Run(); err != nil { if err := cmd.Run(); err != nil {