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/
prometheus.go
531 lines (467 loc) · 19 KB
/
prometheus.go
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package prometheus
import (
"bytes"
"context"
"encoding/json"
"fmt"
"os"
"regexp"
"strconv"
"strings"
"time"
g "github.com/onsi/ginkgo"
o "github.com/onsi/gomega"
dto "github.com/prometheus/client_model/go"
"github.com/prometheus/common/expfmt"
v1 "k8s.io/api/core/v1"
kapierrs "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/wait"
clientset "k8s.io/client-go/kubernetes"
watchtools "k8s.io/client-go/tools/watch"
kapi "k8s.io/kubernetes/pkg/apis/core"
"k8s.io/kubernetes/pkg/client/conditions"
e2e "k8s.io/kubernetes/test/e2e/framework"
"github.com/openshift/openshift-tests/test/extended/networking"
exutil "github.com/openshift/openshift-tests/test/extended/util"
)
var _ = g.Describe("[Feature:Prometheus][Conformance] Prometheus", func() {
defer g.GinkgoRecover()
var (
oc = exutil.NewCLIWithoutNamespace("prometheus")
url, bearerToken string
)
g.BeforeEach(func() {
var ok bool
url, bearerToken, ok = locatePrometheus(oc)
if !ok {
e2e.Skipf("Prometheus could not be located on this cluster, skipping prometheus test")
}
})
g.Describe("when installed on the cluster", func() {
g.It("should report telemetry if a cloud.openshift.com token is present", func() {
// https://github.com/openshift/cluster-monitoring-operator/pull/434
// changes the behavior from using the extra telemeter-client to
// the Prometheus native remote-write protocol. This causes the
// telemeter-client metrics to not be available anymore, causing
// this test to fail on that PR, but we can't merge modifying this
// test yet because the new metrics are not there yet. Skipping
// this test intermediately to merge the PR.
e2e.Skipf("skipping in order to merge https://github.com/openshift/cluster-monitoring-operator/pull/434")
if !hasPullSecret(oc.AdminKubeClient(), "cloud.openshift.com") {
e2e.Skipf("Telemetry is disabled")
}
oc.SetupProject()
ns := oc.Namespace()
execPod := exutil.CreateCentosExecPodOrFail(oc.AdminKubeClient(), ns, "execpod", nil)
defer func() { oc.AdminKubeClient().CoreV1().Pods(ns).Delete(execPod.Name, metav1.NewDeleteOptions(1)) }()
tests := map[string]bool{
// Should have successfully sent at least some metrics to remote write endpoint
// uncomment this once https://github.com/openshift/cluster-monitoring-operator/pull/434
// is merged, and remove the other two checks.
// `prometheus_remote_storage_succeeded_samples_total{job="prometheus-k8s"} >= 1`: true,
// should have successfully sent at least once to remote
`metricsclient_request_send{client="federate_to",job="telemeter-client",status_code="200"} >= 1`: true,
// should have scraped some metrics from prometheus
`federate_samples{job="telemeter-client"} >= 10`: true,
}
runQueries(tests, oc, ns, execPod.Name, url, bearerToken)
e2e.Logf("Telemetry is enabled: %s", bearerToken)
})
g.It("should start and expose a secured proxy and unsecured metrics", func() {
oc.SetupProject()
ns := oc.Namespace()
execPod := exutil.CreateCentosExecPodOrFail(oc.AdminKubeClient(), ns, "execpod", nil)
defer func() { oc.AdminKubeClient().CoreV1().Pods(ns).Delete(execPod.Name, metav1.NewDeleteOptions(1)) }()
g.By("checking the unsecured metrics path")
var metrics map[string]*dto.MetricFamily
o.Expect(wait.PollImmediate(10*time.Second, 2*time.Minute, func() (bool, error) {
results, err := getInsecureURLViaPod(ns, execPod.Name, fmt.Sprintf("%s/metrics", url))
if err != nil {
e2e.Logf("unable to get unsecured metrics: %v", err)
return false, nil
}
p := expfmt.TextParser{}
metrics, err = p.TextToMetricFamilies(bytes.NewBufferString(results))
o.Expect(err).NotTo(o.HaveOccurred())
// original field in 2.0.0-beta
counts := findCountersWithLabels(metrics["tsdb_samples_appended_total"], labels{})
if len(counts) != 0 && counts[0] > 0 {
return true, nil
}
// 2.0.0-rc.0
counts = findCountersWithLabels(metrics["tsdb_head_samples_appended_total"], labels{})
if len(counts) != 0 && counts[0] > 0 {
return true, nil
}
// 2.0.0-rc.2
counts = findCountersWithLabels(metrics["prometheus_tsdb_head_samples_appended_total"], labels{})
if len(counts) != 0 && counts[0] > 0 {
return true, nil
}
return false, nil
})).NotTo(o.HaveOccurred(), fmt.Sprintf("Did not find tsdb_samples_appended_total, tsdb_head_samples_appended_total, or prometheus_tsdb_head_samples_appended_total"))
g.By("verifying the oauth-proxy reports a 403 on the root URL")
err := expectURLStatusCodeExec(ns, execPod.Name, url, 403)
o.Expect(err).NotTo(o.HaveOccurred())
g.By("verifying a service account token is able to authenticate")
err = expectBearerTokenURLStatusCodeExec(ns, execPod.Name, fmt.Sprintf("%s/graph", url), bearerToken, 200)
o.Expect(err).NotTo(o.HaveOccurred())
g.By("verifying a service account token is able to access the Prometheus API")
// expect all endpoints within 60 seconds
var lastErrs []error
o.Expect(wait.PollImmediate(10*time.Second, 2*time.Minute, func() (bool, error) {
contents, err := getBearerTokenURLViaPod(ns, execPod.Name, fmt.Sprintf("%s/api/v1/targets", url), bearerToken)
o.Expect(err).NotTo(o.HaveOccurred())
targets := &prometheusTargets{}
err = json.Unmarshal([]byte(contents), targets)
o.Expect(err).NotTo(o.HaveOccurred())
g.By("verifying all expected jobs have a working target")
lastErrs = all(
// The OpenShift control plane
targets.Expect(labels{"job": "api"}, "up", "^https://.*/metrics$"),
targets.Expect(labels{"job": "controller-manager"}, "up", "^https://.*/metrics$"),
// The kube control plane
targets.Expect(labels{"job": "etcd"}, "up", "^https://.*/metrics$"),
targets.Expect(labels{"job": "apiserver"}, "up", "^https://.*/metrics$"),
targets.Expect(labels{"job": "kube-controller-manager"}, "up", "^https://.*/metrics$"),
targets.Expect(labels{"job": "scheduler"}, "up", "^https://.*/metrics$"),
targets.Expect(labels{"job": "kube-state-metrics"}, "up", "^https://.*/metrics$"),
// TODO: should probably be https
targets.Expect(labels{"job": "cluster-version-operator"}, "up", "^http://.*/metrics$"),
targets.Expect(labels{"job": "prometheus-k8s", "namespace": "openshift-monitoring", "pod": "prometheus-k8s-0"}, "up", "^https://.*/metrics$"),
targets.Expect(labels{"job": "kubelet"}, "up", "^https://.*/metrics$"),
targets.Expect(labels{"job": "kubelet"}, "up", "^https://.*/metrics/cadvisor$"),
targets.Expect(labels{"job": "node-exporter"}, "up", "^https://.*/metrics$"),
targets.Expect(labels{"job": "prometheus-operator"}, "up", "^http://.*/metrics$"),
targets.Expect(labels{"job": "alertmanager-main"}, "up", "^https://.*/metrics$"),
targets.Expect(labels{"job": "crio"}, "up", "^http://.*/metrics$"),
)
if len(lastErrs) > 0 {
e2e.Logf("missing some targets: %v", lastErrs)
return false, nil
}
return true, nil
})).NotTo(o.HaveOccurred(), "possibly some services didn't register ServiceMonitors to allow metrics collection")
})
g.It("should have a Watchdog alert in firing state", func() {
oc.SetupProject()
ns := oc.Namespace()
execPod := exutil.CreateCentosExecPodOrFail(oc.AdminKubeClient(), ns, "execpod", nil)
defer func() { oc.AdminKubeClient().CoreV1().Pods(ns).Delete(execPod.Name, metav1.NewDeleteOptions(1)) }()
tests := map[string]bool{
// should have constantly firing a watchdog alert
`ALERTS{alertstate="firing",alertname="Watchdog",severity="none"} == 1`: true,
}
runQueries(tests, oc, ns, execPod.Name, url, bearerToken)
e2e.Logf("Watchdog alert is firing")
})
g.It("should have important platform topology metrics", func() {
oc.SetupProject()
ns := oc.Namespace()
execPod := exutil.CreateCentosExecPodOrFail(oc.AdminKubeClient(), ns, "execpod", nil)
defer func() { oc.AdminKubeClient().CoreV1().Pods(ns).Delete(execPod.Name, metav1.NewDeleteOptions(1)) }()
tests := map[string]bool{
// track infrastructure type
`cluster_infrastructure_provider{type!=""}`: true,
`cluster_feature_set`: true,
// track installer type
`cluster_installer{type!="",invoker!=""}`: true,
// track sum of etcd
`instance:etcd_object_counts:sum > 0`: true,
// track cores and sockets across node types
`sum(node_role_os_version_machine:cpu_capacity_cores:sum{label_kubernetes_io_arch!="",label_node_role_kubernetes_io_master!=""}) > 0`: true,
`sum(node_role_os_version_machine:cpu_capacity_sockets:sum{label_kubernetes_io_arch!="",label_node_hyperthread_enabled!="",label_node_role_kubernetes_io_master!=""}) > 0`: true,
}
runQueries(tests, oc, ns, execPod.Name, url, bearerToken)
})
g.It("should have non-Pod host cAdvisor metrics", func() {
oc.SetupProject()
ns := oc.Namespace()
execPod := exutil.CreateCentosExecPodOrFail(oc.AdminKubeClient(), ns, "execpod", nil)
defer func() { oc.AdminKubeClient().CoreV1().Pods(ns).Delete(execPod.Name, metav1.NewDeleteOptions(1)) }()
tests := map[string]bool{
`container_cpu_usage_seconds_total{id!~"/kubepods.slice/.*"} >= 1`: true,
}
runQueries(tests, oc, ns, execPod.Name, url, bearerToken)
})
g.It("shouldn't have failing rules evaluation", func() {
oc.SetupProject()
ns := oc.Namespace()
execPod := exutil.CreateCentosExecPodOrFail(oc.AdminKubeClient(), ns, "execpod", nil)
defer func() { oc.AdminKubeClient().CoreV1().Pods(ns).Delete(execPod.Name, metav1.NewDeleteOptions(1)) }()
tests := map[string]bool{
`prometheus_rule_evaluation_failures_total >= 1`: false,
}
runQueries(tests, oc, ns, execPod.Name, url, bearerToken)
})
networking.InOpenShiftSDNContext(func() {
g.It("should be able to get the sdn ovs flows", func() {
oc.SetupProject()
ns := oc.Namespace()
execPod := exutil.CreateCentosExecPodOrFail(oc.AdminKubeClient(), ns, "execpod", nil)
defer func() { oc.AdminKubeClient().CoreV1().Pods(ns).Delete(execPod.Name, metav1.NewDeleteOptions(1)) }()
tests := map[string]bool{
//something
`openshift_sdn_ovs_flows >= 1`: true,
}
runQueries(tests, oc, ns, execPod.Name, url, bearerToken)
})
})
g.It("shouldn't report any alerts in firing state apart from Watchdog and AlertmanagerReceiversNotConfigured", func() {
if len(os.Getenv("TEST_UNSUPPORTED_ALLOW_VERSION_SKEW")) > 0 {
e2e.Skipf("Test is disabled to allow cluster components to have different versions, and skewed versions trigger multiple other alerts")
}
oc.SetupProject()
ns := oc.Namespace()
execPod := exutil.CreateCentosExecPodOrFail(oc.AdminKubeClient(), ns, "execpod", nil)
defer func() { oc.AdminKubeClient().CoreV1().Pods(ns).Delete(execPod.Name, metav1.NewDeleteOptions(1)) }()
tests := map[string]bool{
// Checking Watchdog alert state is done in "should have a Watchdog alert in firing state".
`ALERTS{alertname!~"Watchdog|AlertmanagerReceiversNotConfigured|PrometheusRemoteWriteDesiredShards",alertstate="firing"} >= 1`: false,
}
runQueries(tests, oc, ns, execPod.Name, url, bearerToken)
})
g.It("should provide ingress metrics", func() {
oc.SetupProject()
ns := oc.Namespace()
execPod := exutil.CreateCentosExecPodOrFail(oc.AdminKubeClient(), ns, "execpod", nil)
defer func() { oc.AdminKubeClient().CoreV1().Pods(ns).Delete(execPod.Name, metav1.NewDeleteOptions(1)) }()
var lastErrs []error
o.Expect(wait.PollImmediate(10*time.Second, 4*time.Minute, func() (bool, error) {
contents, err := getBearerTokenURLViaPod(ns, execPod.Name, fmt.Sprintf("%s/api/v1/targets", url), bearerToken)
o.Expect(err).NotTo(o.HaveOccurred())
targets := &prometheusTargets{}
err = json.Unmarshal([]byte(contents), targets)
o.Expect(err).NotTo(o.HaveOccurred())
g.By("verifying all expected jobs have a working target")
lastErrs = all(
// Is there a good way to discover the name and thereby avoid leaking the naming algorithm?
targets.Expect(labels{"job": "router-internal-default"}, "up", "^https://.*/metrics$"),
)
if len(lastErrs) > 0 {
e2e.Logf("missing some targets: %v", lastErrs)
return false, nil
}
return true, nil
})).NotTo(o.HaveOccurred(), "ingress router cannot report metrics to monitoring system")
g.By("verifying standard metrics keys")
queries := map[string]bool{
`template_router_reload_seconds_count{job="router-internal-default"} >= 1`: true,
`haproxy_server_up{job="router-internal-default"} >= 1`: true,
}
runQueries(queries, oc, ns, execPod.Name, url, bearerToken)
})
})
})
func all(errs ...error) []error {
var result []error
for _, err := range errs {
if err != nil {
result = append(result, err)
}
}
return result
}
type prometheusTargets struct {
Data struct {
ActiveTargets []struct {
Labels map[string]string
Health string
ScrapeUrl string
}
}
Status string
}
func (t *prometheusTargets) Expect(l labels, health, scrapeURLPattern string) error {
for _, target := range t.Data.ActiveTargets {
match := true
for k, v := range l {
if target.Labels[k] != v {
match = false
break
}
}
if !match {
continue
}
if health != target.Health {
continue
}
if !regexp.MustCompile(scrapeURLPattern).MatchString(target.ScrapeUrl) {
continue
}
return nil
}
return fmt.Errorf("no match for %v with health %s and scrape URL %s", l, health, scrapeURLPattern)
}
type labels map[string]string
func (l labels) With(name, value string) labels {
n := make(labels)
for k, v := range l {
n[k] = v
}
n[name] = value
return n
}
func findEnvVar(vars []kapi.EnvVar, key string) string {
for _, v := range vars {
if v.Name == key {
return v.Value
}
}
return ""
}
func findMetricsWithLabels(f *dto.MetricFamily, labels map[string]string) []*dto.Metric {
var result []*dto.Metric
if f == nil {
return result
}
for _, m := range f.Metric {
matched := map[string]struct{}{}
for _, l := range m.Label {
if expect, ok := labels[l.GetName()]; ok {
if expect != l.GetValue() {
break
}
matched[l.GetName()] = struct{}{}
}
}
if len(matched) != len(labels) {
continue
}
result = append(result, m)
}
return result
}
func findCountersWithLabels(f *dto.MetricFamily, labels map[string]string) []float64 {
var result []float64
for _, m := range findMetricsWithLabels(f, labels) {
result = append(result, m.Counter.GetValue())
}
return result
}
func findGaugesWithLabels(f *dto.MetricFamily, labels map[string]string) []float64 {
var result []float64
for _, m := range findMetricsWithLabels(f, labels) {
result = append(result, m.Gauge.GetValue())
}
return result
}
func findMetricLabels(f *dto.MetricFamily, labels map[string]string, match string) []string {
var result []string
for _, m := range findMetricsWithLabels(f, labels) {
for _, l := range m.Label {
if l.GetName() == match {
result = append(result, l.GetValue())
break
}
}
}
return result
}
func expectURLStatusCodeExec(ns, execPodName, url string, statusCode int) error {
cmd := fmt.Sprintf("curl -k -s -o /dev/null -w '%%{http_code}' %q", url)
output, err := e2e.RunHostCmd(ns, execPodName, cmd)
if err != nil {
return fmt.Errorf("host command failed: %v\n%s", err, output)
}
if output != strconv.Itoa(statusCode) {
return fmt.Errorf("last response from server was not %d: %s", statusCode, output)
}
return nil
}
func expectBearerTokenURLStatusCodeExec(ns, execPodName, url, bearer string, statusCode int) error {
cmd := fmt.Sprintf("curl -k -s -H 'Authorization: Bearer %s' -o /dev/null -w '%%{http_code}' %q", bearer, url)
output, err := e2e.RunHostCmd(ns, execPodName, cmd)
if err != nil {
return fmt.Errorf("host command failed: %v\n%s", err, output)
}
if output != strconv.Itoa(statusCode) {
return fmt.Errorf("last response from server was not %d: %s", statusCode, output)
}
return nil
}
func getBearerTokenURLViaPod(ns, execPodName, url, bearer string) (string, error) {
cmd := fmt.Sprintf("curl -s -k -H 'Authorization: Bearer %s' %q", bearer, url)
output, err := e2e.RunHostCmd(ns, execPodName, cmd)
if err != nil {
return "", fmt.Errorf("host command failed: %v\n%s", err, output)
}
return output, nil
}
func getAuthenticatedURLViaPod(ns, execPodName, url, user, pass string) (string, error) {
cmd := fmt.Sprintf("curl -s -u %s:%s %q", user, pass, url)
output, err := e2e.RunHostCmd(ns, execPodName, cmd)
if err != nil {
return "", fmt.Errorf("host command failed: %v\n%s", err, output)
}
return output, nil
}
func getInsecureURLViaPod(ns, execPodName, url string) (string, error) {
cmd := fmt.Sprintf("curl -s -k %q", url)
output, err := e2e.RunHostCmd(ns, execPodName, cmd)
if err != nil {
return "", fmt.Errorf("host command failed: %v\n%s", err, output)
}
return output, nil
}
func waitForServiceAccountInNamespace(c clientset.Interface, ns, serviceAccountName string, timeout time.Duration) error {
w, err := c.CoreV1().ServiceAccounts(ns).Watch(metav1.SingleObject(metav1.ObjectMeta{Name: serviceAccountName}))
if err != nil {
return err
}
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
_, err = watchtools.UntilWithoutRetry(ctx, w, conditions.ServiceAccountHasSecrets)
return err
}
func locatePrometheus(oc *exutil.CLI) (url, bearerToken string, ok bool) {
_, err := oc.AdminKubeClient().CoreV1().Services("openshift-monitoring").Get("prometheus-k8s", metav1.GetOptions{})
if kapierrs.IsNotFound(err) {
return "", "", false
}
waitForServiceAccountInNamespace(oc.AdminKubeClient(), "openshift-monitoring", "prometheus-k8s", 2*time.Minute)
for i := 0; i < 30; i++ {
secrets, err := oc.AdminKubeClient().CoreV1().Secrets("openshift-monitoring").List(metav1.ListOptions{})
o.Expect(err).NotTo(o.HaveOccurred())
for _, secret := range secrets.Items {
if secret.Type != v1.SecretTypeServiceAccountToken {
continue
}
if !strings.HasPrefix(secret.Name, "prometheus-") {
continue
}
bearerToken = string(secret.Data[v1.ServiceAccountTokenKey])
break
}
if len(bearerToken) == 0 {
e2e.Logf("Waiting for prometheus service account secret to show up")
time.Sleep(time.Second)
continue
}
}
o.Expect(bearerToken).ToNot(o.BeEmpty())
return "https://prometheus-k8s.openshift-monitoring.svc:9091", bearerToken, true
}
func hasPullSecret(client clientset.Interface, name string) bool {
scrt, err := client.CoreV1().Secrets("openshift-config").Get("pull-secret", metav1.GetOptions{})
if err != nil {
if kapierrs.IsNotFound(err) {
return false
}
e2e.Failf("could not retrieve pull-secret: %v", err)
}
if scrt.Type != v1.SecretTypeDockerConfigJson {
e2e.Failf("error expecting secret type %s got %s", v1.SecretTypeDockerConfigJson, scrt.Type)
}
ps := struct {
Auths map[string]struct {
Auth string `json:"auth"`
} `json:"auths"`
}{}
if err := json.Unmarshal(scrt.Data[v1.DockerConfigJsonKey], &ps); err != nil {
e2e.Failf("could not unmarshal pullSecret from openshift-config/pull-secret: %v", err)
}
return len(ps.Auths[name].Auth) > 0
}