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multitenant_test.go
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multitenant_test.go
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package alertmanager
import (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"math/rand"
"net/http"
"net/http/httptest"
"net/http/pprof"
"os"
"path/filepath"
"regexp"
"strings"
"sync"
"testing"
"time"
"github.com/go-kit/kit/log"
"github.com/grafana/dskit/flagext"
"github.com/grafana/dskit/kv/consul"
"github.com/grafana/dskit/services"
"github.com/prometheus/alertmanager/cluster/clusterpb"
"github.com/prometheus/alertmanager/notify"
"github.com/prometheus/alertmanager/pkg/labels"
"github.com/prometheus/alertmanager/types"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/testutil"
"github.com/prometheus/common/model"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/thanos-io/thanos/pkg/objstore"
"github.com/weaveworks/common/httpgrpc"
"github.com/weaveworks/common/user"
"go.uber.org/atomic"
"golang.org/x/time/rate"
"google.golang.org/grpc"
"github.com/cortexproject/cortex/pkg/alertmanager/alertmanagerpb"
"github.com/cortexproject/cortex/pkg/alertmanager/alertspb"
"github.com/cortexproject/cortex/pkg/alertmanager/alertstore"
"github.com/cortexproject/cortex/pkg/alertmanager/alertstore/bucketclient"
"github.com/cortexproject/cortex/pkg/ring"
"github.com/cortexproject/cortex/pkg/storage/bucket"
"github.com/cortexproject/cortex/pkg/util"
"github.com/cortexproject/cortex/pkg/util/concurrency"
"github.com/cortexproject/cortex/pkg/util/test"
"github.com/cortexproject/cortex/pkg/util/validation"
)
var (
simpleConfigOne = `route:
receiver: dummy
receivers:
- name: dummy`
simpleConfigTwo = `route:
receiver: dummy
receivers:
- name: dummy`
)
func mockAlertmanagerConfig(t *testing.T) *MultitenantAlertmanagerConfig {
t.Helper()
externalURL := flagext.URLValue{}
err := externalURL.Set("http://localhost/api/prom")
require.NoError(t, err)
tempDir, err := ioutil.TempDir(os.TempDir(), "alertmanager")
require.NoError(t, err)
t.Cleanup(func() {
err := os.RemoveAll(tempDir)
require.NoError(t, err)
})
cfg := &MultitenantAlertmanagerConfig{}
flagext.DefaultValues(cfg)
cfg.ExternalURL = externalURL
cfg.DataDir = tempDir
cfg.ShardingRing.InstanceID = "test"
cfg.ShardingRing.InstanceAddr = "127.0.0.1"
cfg.PollInterval = time.Minute
return cfg
}
func TestMultitenantAlertmanagerConfig_Validate(t *testing.T) {
tests := map[string]struct {
setup func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config)
expected error
}{
"should pass with default config": {
setup: func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config) {},
expected: nil,
},
"should fail if persistent interval is 0": {
setup: func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config) {
cfg.Persister.Interval = 0
},
expected: errInvalidPersistInterval,
},
"should fail if persistent interval is negative": {
setup: func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config) {
cfg.Persister.Interval = -1
},
expected: errInvalidPersistInterval,
},
"should fail if external URL ends with /": {
setup: func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config) {
require.NoError(t, cfg.ExternalURL.Set("http://localhost/prefix/"))
},
expected: errInvalidExternalURL,
},
"should succeed if external URL does not end with /": {
setup: func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config) {
require.NoError(t, cfg.ExternalURL.Set("http://localhost/prefix"))
},
expected: nil,
},
"should succeed if sharding enabled and new storage configuration given with bucket client": {
setup: func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config) {
cfg.ShardingEnabled = true
storageCfg.Backend = "s3"
},
expected: nil,
},
"should fail if sharding enabled and new storage store configuration given with local type": {
setup: func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config) {
cfg.ShardingEnabled = true
storageCfg.Backend = "local"
},
expected: errShardingUnsupportedStorage,
},
"should fail if sharding enabled and new storage store configuration given with configdb type": {
setup: func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config) {
cfg.ShardingEnabled = true
storageCfg.Backend = "configdb"
},
expected: errShardingUnsupportedStorage,
},
"should fail if sharding enabled and legacy store configuration given": {
setup: func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config) {
cfg.ShardingEnabled = true
cfg.Store.Type = "s3"
},
expected: errShardingLegacyStorage,
},
"should fail if zone aware is enabled but zone is not set": {
setup: func(t *testing.T, cfg *MultitenantAlertmanagerConfig, storageCfg *alertstore.Config) {
cfg.ShardingEnabled = true
cfg.ShardingRing.ZoneAwarenessEnabled = true
},
expected: errZoneAwarenessEnabledWithoutZoneInfo,
},
}
for testName, testData := range tests {
t.Run(testName, func(t *testing.T) {
cfg := &MultitenantAlertmanagerConfig{}
storageCfg := alertstore.Config{}
flagext.DefaultValues(cfg)
flagext.DefaultValues(&storageCfg)
testData.setup(t, cfg, &storageCfg)
assert.Equal(t, testData.expected, cfg.Validate(storageCfg))
})
}
}
func TestMultitenantAlertmanager_loadAndSyncConfigs(t *testing.T) {
ctx := context.Background()
// Run this test using a real storage client.
store := prepareInMemoryAlertStore()
require.NoError(t, store.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: "user1",
RawConfig: simpleConfigOne,
Templates: []*alertspb.TemplateDesc{},
}))
require.NoError(t, store.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: "user2",
RawConfig: simpleConfigOne,
Templates: []*alertspb.TemplateDesc{},
}))
reg := prometheus.NewPedanticRegistry()
cfg := mockAlertmanagerConfig(t)
am, err := createMultitenantAlertmanager(cfg, nil, nil, store, nil, nil, log.NewNopLogger(), reg)
require.NoError(t, err)
// Ensure the configs are synced correctly
err = am.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
require.Len(t, am.alertmanagers, 2)
currentConfig, cfgExists := am.cfgs["user1"]
require.True(t, cfgExists)
require.Equal(t, simpleConfigOne, currentConfig.RawConfig)
assert.NoError(t, testutil.GatherAndCompare(reg, bytes.NewBufferString(`
# HELP cortex_alertmanager_config_last_reload_successful Boolean set to 1 whenever the last configuration reload attempt was successful.
# TYPE cortex_alertmanager_config_last_reload_successful gauge
cortex_alertmanager_config_last_reload_successful{user="user1"} 1
cortex_alertmanager_config_last_reload_successful{user="user2"} 1
`), "cortex_alertmanager_config_last_reload_successful"))
// Ensure when a 3rd config is added, it is synced correctly
user3Cfg := alertspb.AlertConfigDesc{
User: "user3",
RawConfig: simpleConfigOne + `
templates:
- 'first.tpl'
- 'second.tpl'
`,
Templates: []*alertspb.TemplateDesc{
{
Filename: "first.tpl",
Body: `{{ define "t1" }}Template 1 ... {{end}}`,
},
{
Filename: "second.tpl",
Body: `{{ define "t2" }}Template 2{{ end}}`,
},
},
}
require.NoError(t, store.SetAlertConfig(ctx, user3Cfg))
err = am.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
require.Len(t, am.alertmanagers, 3)
dirs := am.getPerUserDirectories()
user3Dir := dirs["user3"]
require.NotZero(t, user3Dir)
require.True(t, dirExists(t, user3Dir))
require.True(t, dirExists(t, filepath.Join(user3Dir, templatesDir)))
require.True(t, fileExists(t, filepath.Join(user3Dir, templatesDir, "first.tpl")))
require.True(t, fileExists(t, filepath.Join(user3Dir, templatesDir, "second.tpl")))
assert.NoError(t, testutil.GatherAndCompare(reg, bytes.NewBufferString(`
# HELP cortex_alertmanager_config_last_reload_successful Boolean set to 1 whenever the last configuration reload attempt was successful.
# TYPE cortex_alertmanager_config_last_reload_successful gauge
cortex_alertmanager_config_last_reload_successful{user="user1"} 1
cortex_alertmanager_config_last_reload_successful{user="user2"} 1
cortex_alertmanager_config_last_reload_successful{user="user3"} 1
`), "cortex_alertmanager_config_last_reload_successful"))
// Ensure the config is updated
require.NoError(t, store.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: "user1",
RawConfig: simpleConfigTwo,
Templates: []*alertspb.TemplateDesc{},
}))
err = am.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
currentConfig, cfgExists = am.cfgs["user1"]
require.True(t, cfgExists)
require.Equal(t, simpleConfigTwo, currentConfig.RawConfig)
// Test Delete User, ensure config is removed and the resources are freed.
require.NoError(t, store.DeleteAlertConfig(ctx, "user3"))
err = am.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
currentConfig, cfgExists = am.cfgs["user3"]
require.False(t, cfgExists)
require.Equal(t, "", currentConfig.RawConfig)
_, cfgExists = am.alertmanagers["user3"]
require.False(t, cfgExists)
dirs = am.getPerUserDirectories()
require.NotZero(t, dirs["user1"])
require.NotZero(t, dirs["user2"])
require.Zero(t, dirs["user3"]) // User3 is deleted, so we should have no more files for it.
require.False(t, fileExists(t, user3Dir))
assert.NoError(t, testutil.GatherAndCompare(reg, bytes.NewBufferString(`
# HELP cortex_alertmanager_config_last_reload_successful Boolean set to 1 whenever the last configuration reload attempt was successful.
# TYPE cortex_alertmanager_config_last_reload_successful gauge
cortex_alertmanager_config_last_reload_successful{user="user1"} 1
cortex_alertmanager_config_last_reload_successful{user="user2"} 1
`), "cortex_alertmanager_config_last_reload_successful"))
// Ensure when a 3rd config is re-added, it is synced correctly
require.NoError(t, store.SetAlertConfig(ctx, user3Cfg))
err = am.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
currentConfig, cfgExists = am.cfgs["user3"]
require.True(t, cfgExists)
require.Equal(t, user3Cfg.RawConfig, currentConfig.RawConfig)
_, cfgExists = am.alertmanagers["user3"]
require.True(t, cfgExists)
dirs = am.getPerUserDirectories()
require.NotZero(t, dirs["user1"])
require.NotZero(t, dirs["user2"])
require.Equal(t, user3Dir, dirs["user3"]) // Dir should exist, even though state files are not generated yet.
// Hierarchy that existed before should exist again.
require.True(t, dirExists(t, user3Dir))
require.True(t, dirExists(t, filepath.Join(user3Dir, templatesDir)))
require.True(t, fileExists(t, filepath.Join(user3Dir, templatesDir, "first.tpl")))
require.True(t, fileExists(t, filepath.Join(user3Dir, templatesDir, "second.tpl")))
assert.NoError(t, testutil.GatherAndCompare(reg, bytes.NewBufferString(`
# HELP cortex_alertmanager_config_last_reload_successful Boolean set to 1 whenever the last configuration reload attempt was successful.
# TYPE cortex_alertmanager_config_last_reload_successful gauge
cortex_alertmanager_config_last_reload_successful{user="user1"} 1
cortex_alertmanager_config_last_reload_successful{user="user2"} 1
cortex_alertmanager_config_last_reload_successful{user="user3"} 1
`), "cortex_alertmanager_config_last_reload_successful"))
}
func TestMultitenantAlertmanager_FirewallShouldBlockHTTPBasedReceiversWhenEnabled(t *testing.T) {
tests := map[string]struct {
getAlertmanagerConfig func(backendURL string) string
}{
"webhook": {
getAlertmanagerConfig: func(backendURL string) string {
return fmt.Sprintf(`
route:
receiver: webhook
group_wait: 0s
group_interval: 1s
receivers:
- name: webhook
webhook_configs:
- url: %s
`, backendURL)
},
},
"pagerduty": {
getAlertmanagerConfig: func(backendURL string) string {
return fmt.Sprintf(`
route:
receiver: pagerduty
group_wait: 0s
group_interval: 1s
receivers:
- name: pagerduty
pagerduty_configs:
- url: %s
routing_key: secret
`, backendURL)
},
},
"slack": {
getAlertmanagerConfig: func(backendURL string) string {
return fmt.Sprintf(`
route:
receiver: slack
group_wait: 0s
group_interval: 1s
receivers:
- name: slack
slack_configs:
- api_url: %s
channel: test
`, backendURL)
},
},
"opsgenie": {
getAlertmanagerConfig: func(backendURL string) string {
return fmt.Sprintf(`
route:
receiver: opsgenie
group_wait: 0s
group_interval: 1s
receivers:
- name: opsgenie
opsgenie_configs:
- api_url: %s
api_key: secret
`, backendURL)
},
},
"wechat": {
getAlertmanagerConfig: func(backendURL string) string {
return fmt.Sprintf(`
route:
receiver: wechat
group_wait: 0s
group_interval: 1s
receivers:
- name: wechat
wechat_configs:
- api_url: %s
api_secret: secret
corp_id: babycorp
`, backendURL)
},
},
}
for receiverName, testData := range tests {
for _, firewallEnabled := range []bool{true, false} {
receiverName := receiverName
testData := testData
firewallEnabled := firewallEnabled
t.Run(fmt.Sprintf("receiver=%s firewall enabled=%v", receiverName, firewallEnabled), func(t *testing.T) {
t.Parallel()
ctx := context.Background()
userID := "user-1"
serverInvoked := atomic.NewBool(false)
// Create a local HTTP server to test whether the request is received.
server := httptest.NewServer(http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) {
serverInvoked.Store(true)
writer.WriteHeader(http.StatusOK)
}))
defer server.Close()
// Create the alertmanager config.
alertmanagerCfg := testData.getAlertmanagerConfig(fmt.Sprintf("http://%s", server.Listener.Addr().String()))
// Store the alertmanager config in the bucket.
store := prepareInMemoryAlertStore()
require.NoError(t, store.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: userID,
RawConfig: alertmanagerCfg,
}))
// Prepare the alertmanager config.
cfg := mockAlertmanagerConfig(t)
// Prepare the limits config.
var limits validation.Limits
flagext.DefaultValues(&limits)
limits.AlertmanagerReceiversBlockPrivateAddresses = firewallEnabled
overrides, err := validation.NewOverrides(limits, nil)
require.NoError(t, err)
// Start the alertmanager.
reg := prometheus.NewPedanticRegistry()
logs := &concurrency.SyncBuffer{}
logger := log.NewLogfmtLogger(logs)
am, err := createMultitenantAlertmanager(cfg, nil, nil, store, nil, overrides, logger, reg)
require.NoError(t, err)
require.NoError(t, services.StartAndAwaitRunning(ctx, am))
t.Cleanup(func() {
require.NoError(t, services.StopAndAwaitTerminated(ctx, am))
})
// Ensure the configs are synced correctly.
assert.NoError(t, testutil.GatherAndCompare(reg, bytes.NewBufferString(`
# HELP cortex_alertmanager_config_last_reload_successful Boolean set to 1 whenever the last configuration reload attempt was successful.
# TYPE cortex_alertmanager_config_last_reload_successful gauge
cortex_alertmanager_config_last_reload_successful{user="user-1"} 1
`), "cortex_alertmanager_config_last_reload_successful"))
// Create an alert to push.
alerts := types.Alerts(&types.Alert{
Alert: model.Alert{
Labels: map[model.LabelName]model.LabelValue{model.AlertNameLabel: "test"},
StartsAt: time.Now().Add(-time.Minute),
EndsAt: time.Now().Add(time.Minute),
},
UpdatedAt: time.Now(),
Timeout: false,
})
alertsPayload, err := json.Marshal(alerts)
require.NoError(t, err)
// Push an alert.
req := httptest.NewRequest(http.MethodPost, cfg.ExternalURL.String()+"/api/v1/alerts", bytes.NewReader(alertsPayload))
req.Header.Set("content-type", "application/json")
reqCtx := user.InjectOrgID(req.Context(), userID)
{
w := httptest.NewRecorder()
am.ServeHTTP(w, req.WithContext(reqCtx))
resp := w.Result()
_, err := ioutil.ReadAll(resp.Body)
require.NoError(t, err)
assert.Equal(t, http.StatusOK, w.Code)
}
// Ensure the server endpoint has not been called if firewall is enabled. Since the alert is delivered
// asynchronously, we should pool it for a short period.
deadline := time.Now().Add(3 * time.Second)
for {
if time.Now().After(deadline) || serverInvoked.Load() {
break
}
time.Sleep(100 * time.Millisecond)
}
assert.Equal(t, !firewallEnabled, serverInvoked.Load())
// Print all alertmanager logs to have more information if this test fails in CI.
t.Logf("Alertmanager logs:\n%s", logs.String())
})
}
}
}
func TestMultitenantAlertmanager_migrateStateFilesToPerTenantDirectories(t *testing.T) {
ctx := context.Background()
const (
user1 = "user1"
user2 = "user2"
)
store := prepareInMemoryAlertStore()
require.NoError(t, store.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: user2,
RawConfig: simpleConfigOne,
Templates: []*alertspb.TemplateDesc{},
}))
reg := prometheus.NewPedanticRegistry()
cfg := mockAlertmanagerConfig(t)
am, err := createMultitenantAlertmanager(cfg, nil, nil, store, nil, nil, log.NewNopLogger(), reg)
require.NoError(t, err)
createFile(t, filepath.Join(cfg.DataDir, "nflog:"+user1))
createFile(t, filepath.Join(cfg.DataDir, "silences:"+user1))
createFile(t, filepath.Join(cfg.DataDir, "nflog:"+user2))
createFile(t, filepath.Join(cfg.DataDir, "templates", user2, "template.tpl"))
require.NoError(t, am.migrateStateFilesToPerTenantDirectories())
require.True(t, fileExists(t, filepath.Join(cfg.DataDir, user1, notificationLogSnapshot)))
require.True(t, fileExists(t, filepath.Join(cfg.DataDir, user1, silencesSnapshot)))
require.True(t, fileExists(t, filepath.Join(cfg.DataDir, user2, notificationLogSnapshot)))
require.True(t, dirExists(t, filepath.Join(cfg.DataDir, user2, templatesDir)))
require.True(t, fileExists(t, filepath.Join(cfg.DataDir, user2, templatesDir, "template.tpl")))
}
func fileExists(t *testing.T, path string) bool {
return checkExists(t, path, false)
}
func dirExists(t *testing.T, path string) bool {
return checkExists(t, path, true)
}
func checkExists(t *testing.T, path string, dir bool) bool {
fi, err := os.Stat(path)
if err != nil {
if os.IsNotExist(err) {
return false
}
require.NoError(t, err)
}
require.Equal(t, dir, fi.IsDir())
return true
}
func TestMultitenantAlertmanager_deleteUnusedLocalUserState(t *testing.T) {
ctx := context.Background()
const (
user1 = "user1"
user2 = "user2"
)
store := prepareInMemoryAlertStore()
require.NoError(t, store.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: user2,
RawConfig: simpleConfigOne,
Templates: []*alertspb.TemplateDesc{},
}))
reg := prometheus.NewPedanticRegistry()
cfg := mockAlertmanagerConfig(t)
am, err := createMultitenantAlertmanager(cfg, nil, nil, store, nil, nil, log.NewNopLogger(), reg)
require.NoError(t, err)
createFile(t, filepath.Join(cfg.DataDir, user1, notificationLogSnapshot))
createFile(t, filepath.Join(cfg.DataDir, user1, silencesSnapshot))
createFile(t, filepath.Join(cfg.DataDir, user2, notificationLogSnapshot))
createFile(t, filepath.Join(cfg.DataDir, user2, templatesDir, "template.tpl"))
dirs := am.getPerUserDirectories()
require.Equal(t, 2, len(dirs))
require.NotZero(t, dirs[user1])
require.NotZero(t, dirs[user2])
// Ensure the configs are synced correctly
err = am.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
// loadAndSyncConfigs also cleans up obsolete files. Let's verify that.
dirs = am.getPerUserDirectories()
require.Zero(t, dirs[user1]) // has no configuration, files were deleted
require.NotZero(t, dirs[user2]) // has config, files survived
}
func TestMultitenantAlertmanager_zoneAwareSharding(t *testing.T) {
ctx := context.Background()
alertStore := prepareInMemoryAlertStore()
ringStore, closer := consul.NewInMemoryClient(ring.GetCodec(), log.NewNopLogger())
t.Cleanup(func() { assert.NoError(t, closer.Close()) })
const (
user1 = "user1"
user2 = "user2"
user3 = "user3"
)
createInstance := func(i int, zone string, registries *util.UserRegistries) *MultitenantAlertmanager {
reg := prometheus.NewPedanticRegistry()
cfg := mockAlertmanagerConfig(t)
instanceID := fmt.Sprintf("instance-%d", i)
registries.AddUserRegistry(instanceID, reg)
cfg.ShardingRing.ReplicationFactor = 2
cfg.ShardingRing.InstanceID = instanceID
cfg.ShardingRing.InstanceAddr = fmt.Sprintf("127.0.0.1-%d", i)
cfg.ShardingEnabled = true
cfg.ShardingRing.ZoneAwarenessEnabled = true
cfg.ShardingRing.InstanceZone = zone
am, err := createMultitenantAlertmanager(cfg, nil, nil, alertStore, ringStore, nil, log.NewLogfmtLogger(os.Stdout), reg)
require.NoError(t, err)
t.Cleanup(func() {
require.NoError(t, services.StopAndAwaitTerminated(ctx, am))
})
require.NoError(t, services.StartAndAwaitRunning(ctx, am))
return am
}
registriesZoneA := util.NewUserRegistries()
registriesZoneB := util.NewUserRegistries()
am1ZoneA := createInstance(1, "zoneA", registriesZoneA)
am2ZoneA := createInstance(2, "zoneA", registriesZoneA)
am1ZoneB := createInstance(3, "zoneB", registriesZoneB)
{
require.NoError(t, alertStore.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: user1,
RawConfig: simpleConfigOne,
Templates: []*alertspb.TemplateDesc{},
}))
require.NoError(t, alertStore.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: user2,
RawConfig: simpleConfigOne,
Templates: []*alertspb.TemplateDesc{},
}))
require.NoError(t, alertStore.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: user3,
RawConfig: simpleConfigOne,
Templates: []*alertspb.TemplateDesc{},
}))
err := am1ZoneA.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
err = am2ZoneA.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
err = am1ZoneB.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
}
metricsZoneA := registriesZoneA.BuildMetricFamiliesPerUser()
metricsZoneB := registriesZoneB.BuildMetricFamiliesPerUser()
assert.Equal(t, float64(3), metricsZoneA.GetSumOfGauges("cortex_alertmanager_tenants_owned"))
assert.Equal(t, float64(3), metricsZoneB.GetSumOfGauges("cortex_alertmanager_tenants_owned"))
}
func TestMultitenantAlertmanager_deleteUnusedRemoteUserState(t *testing.T) {
ctx := context.Background()
const (
user1 = "user1"
user2 = "user2"
)
alertStore := prepareInMemoryAlertStore()
ringStore, closer := consul.NewInMemoryClient(ring.GetCodec(), log.NewNopLogger())
t.Cleanup(func() { assert.NoError(t, closer.Close()) })
createInstance := func(i int) *MultitenantAlertmanager {
reg := prometheus.NewPedanticRegistry()
cfg := mockAlertmanagerConfig(t)
cfg.ShardingRing.ReplicationFactor = 1
cfg.ShardingRing.InstanceID = fmt.Sprintf("instance-%d", i)
cfg.ShardingRing.InstanceAddr = fmt.Sprintf("127.0.0.1-%d", i)
cfg.ShardingEnabled = true
// Increase state write interval so that state gets written sooner, making test faster.
cfg.Persister.Interval = 500 * time.Millisecond
am, err := createMultitenantAlertmanager(cfg, nil, nil, alertStore, ringStore, nil, log.NewLogfmtLogger(os.Stdout), reg)
require.NoError(t, err)
t.Cleanup(func() {
require.NoError(t, services.StopAndAwaitTerminated(ctx, am))
})
require.NoError(t, services.StartAndAwaitRunning(ctx, am))
return am
}
// Create two instances. With replication factor of 1, this means that only one
// of the instances will own the user. This tests that an instance does not delete
// state for users that are configured, but are owned by other instances.
am1 := createInstance(1)
am2 := createInstance(2)
// Configure the users and wait for the state persister to write some state for both.
{
require.NoError(t, alertStore.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: user1,
RawConfig: simpleConfigOne,
Templates: []*alertspb.TemplateDesc{},
}))
require.NoError(t, alertStore.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: user2,
RawConfig: simpleConfigOne,
Templates: []*alertspb.TemplateDesc{},
}))
err := am1.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
err = am2.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
require.Eventually(t, func() bool {
_, err1 := alertStore.GetFullState(context.Background(), user1)
_, err2 := alertStore.GetFullState(context.Background(), user2)
return err1 == nil && err2 == nil
}, 5*time.Second, 100*time.Millisecond, "timed out waiting for state to be persisted")
}
// Perform another sync to trigger cleanup; this should have no effect.
{
err := am1.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
err = am2.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
_, err = alertStore.GetFullState(context.Background(), user1)
require.NoError(t, err)
_, err = alertStore.GetFullState(context.Background(), user2)
require.NoError(t, err)
}
// Delete one configuration and trigger cleanup; state for only that user should be deleted.
{
require.NoError(t, alertStore.DeleteAlertConfig(ctx, user1))
err := am1.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
err = am2.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
_, err = alertStore.GetFullState(context.Background(), user1)
require.Equal(t, alertspb.ErrNotFound, err)
_, err = alertStore.GetFullState(context.Background(), user2)
require.NoError(t, err)
}
}
func createFile(t *testing.T, path string) string {
dir := filepath.Dir(path)
require.NoError(t, os.MkdirAll(dir, 0777))
f, err := os.Create(path)
require.NoError(t, err)
require.NoError(t, f.Close())
return path
}
func TestMultitenantAlertmanager_NoExternalURL(t *testing.T) {
amConfig := mockAlertmanagerConfig(t)
amConfig.ExternalURL = flagext.URLValue{} // no external URL
// Create the Multitenant Alertmanager.
reg := prometheus.NewPedanticRegistry()
_, err := NewMultitenantAlertmanager(amConfig, nil, nil, log.NewNopLogger(), reg)
require.EqualError(t, err, "unable to create Alertmanager because the external URL has not been configured")
}
func TestMultitenantAlertmanager_ServeHTTP(t *testing.T) {
// Run this test using a real storage client.
store := prepareInMemoryAlertStore()
amConfig := mockAlertmanagerConfig(t)
externalURL := flagext.URLValue{}
err := externalURL.Set("http://localhost:8080/alertmanager")
require.NoError(t, err)
amConfig.ExternalURL = externalURL
// Create the Multitenant Alertmanager.
reg := prometheus.NewPedanticRegistry()
am, err := createMultitenantAlertmanager(amConfig, nil, nil, store, nil, nil, log.NewNopLogger(), reg)
require.NoError(t, err)
require.NoError(t, services.StartAndAwaitRunning(context.Background(), am))
defer services.StopAndAwaitTerminated(context.Background(), am) //nolint:errcheck
// Request when no user configuration is present.
req := httptest.NewRequest("GET", externalURL.String(), nil)
ctx := user.InjectOrgID(req.Context(), "user1")
{
w := httptest.NewRecorder()
am.ServeHTTP(w, req.WithContext(ctx))
resp := w.Result()
body, _ := ioutil.ReadAll(resp.Body)
require.Equal(t, 404, w.Code)
require.Equal(t, "the Alertmanager is not configured\n", string(body))
}
// Create a configuration for the user in storage.
require.NoError(t, store.SetAlertConfig(ctx, alertspb.AlertConfigDesc{
User: "user1",
RawConfig: simpleConfigTwo,
Templates: []*alertspb.TemplateDesc{},
}))
// Make the alertmanager pick it up.
err = am.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
// Request when AM is active.
{
w := httptest.NewRecorder()
am.ServeHTTP(w, req.WithContext(ctx))
require.Equal(t, 301, w.Code) // redirect to UI
}
// Verify that GET /metrics returns 404 even when AM is active.
{
metricURL := externalURL.String() + "/metrics"
require.Equal(t, "http://localhost:8080/alertmanager/metrics", metricURL)
verify404(ctx, t, am, "GET", metricURL)
}
// Verify that POST /-/reload returns 404 even when AM is active.
{
metricURL := externalURL.String() + "/-/reload"
require.Equal(t, "http://localhost:8080/alertmanager/-/reload", metricURL)
verify404(ctx, t, am, "POST", metricURL)
}
// Verify that GET /debug/index returns 404 even when AM is active.
{
// Register pprof Index (under non-standard path, but this path is exposed by AM using default MUX!)
http.HandleFunc("/alertmanager/debug/index", pprof.Index)
metricURL := externalURL.String() + "/debug/index"
require.Equal(t, "http://localhost:8080/alertmanager/debug/index", metricURL)
verify404(ctx, t, am, "GET", metricURL)
}
// Remove the tenant's Alertmanager
require.NoError(t, store.DeleteAlertConfig(ctx, "user1"))
err = am.loadAndSyncConfigs(context.Background(), reasonPeriodic)
require.NoError(t, err)
{
// Request when the alertmanager is gone
w := httptest.NewRecorder()
am.ServeHTTP(w, req.WithContext(ctx))
resp := w.Result()
body, _ := ioutil.ReadAll(resp.Body)
require.Equal(t, 404, w.Code)
require.Equal(t, "the Alertmanager is not configured\n", string(body))
}
}
func verify404(ctx context.Context, t *testing.T, am *MultitenantAlertmanager, method string, url string) {
metricsReq := httptest.NewRequest(method, url, strings.NewReader("Hello")) // Body for POST Request.
w := httptest.NewRecorder()
am.ServeHTTP(w, metricsReq.WithContext(ctx))
require.Equal(t, 404, w.Code)
}
func TestMultitenantAlertmanager_ServeHTTPWithFallbackConfig(t *testing.T) {
ctx := context.Background()
amConfig := mockAlertmanagerConfig(t)
// Run this test using a real storage client.
store := prepareInMemoryAlertStore()
externalURL := flagext.URLValue{}
err := externalURL.Set("http://localhost:8080/alertmanager")
require.NoError(t, err)
fallbackCfg := `
global:
smtp_smarthost: 'localhost:25'
smtp_from: 'youraddress@example.org'
route:
receiver: example-email
receivers:
- name: example-email
email_configs:
- to: 'youraddress@example.org'
`
amConfig.ExternalURL = externalURL
// Create the Multitenant Alertmanager.
am, err := createMultitenantAlertmanager(amConfig, nil, nil, store, nil, nil, log.NewNopLogger(), nil)
require.NoError(t, err)
am.fallbackConfig = fallbackCfg
require.NoError(t, services.StartAndAwaitRunning(ctx, am))
defer services.StopAndAwaitTerminated(ctx, am) //nolint:errcheck
// Request when no user configuration is present.
req := httptest.NewRequest("GET", externalURL.String()+"/api/v1/status", nil)
w := httptest.NewRecorder()
am.ServeHTTP(w, req.WithContext(user.InjectOrgID(req.Context(), "user1")))
resp := w.Result()
// It succeeds and the Alertmanager is started.
require.Equal(t, http.StatusOK, resp.StatusCode)
require.Len(t, am.alertmanagers, 1)
_, exists := am.alertmanagers["user1"]
require.True(t, exists)
// Even after a poll...
err = am.loadAndSyncConfigs(ctx, reasonPeriodic)
require.NoError(t, err)
// It does not remove the Alertmanager.
require.Len(t, am.alertmanagers, 1)
_, exists = am.alertmanagers["user1"]
require.True(t, exists)
// Remove the Alertmanager configuration.
require.NoError(t, store.DeleteAlertConfig(ctx, "user1"))
err = am.loadAndSyncConfigs(ctx, reasonPeriodic)
require.NoError(t, err)
// Even after removing it.. We start it again with the fallback configuration.
w = httptest.NewRecorder()
am.ServeHTTP(w, req.WithContext(user.InjectOrgID(req.Context(), "user1")))
resp = w.Result()
require.Equal(t, http.StatusOK, resp.StatusCode)
}
func TestMultitenantAlertmanager_InitialSyncWithSharding(t *testing.T) {
tc := []struct {
name string
existing bool
initialState ring.InstanceState
initialTokens ring.Tokens
}{
{
name: "with no instance in the ring",
existing: false,
},
{
name: "with an instance already in the ring with PENDING state and no tokens",
existing: true,
initialState: ring.PENDING,
initialTokens: ring.Tokens{},
},
{
name: "with an instance already in the ring with JOINING state and some tokens",
existing: true,
initialState: ring.JOINING,
initialTokens: ring.Tokens{1, 2, 3, 4, 5, 6, 7, 8, 9},
},
{
name: "with an instance already in the ring with ACTIVE state and all tokens",
existing: true,
initialState: ring.ACTIVE,
initialTokens: ring.GenerateTokens(128, nil),
},
{
name: "with an instance already in the ring with LEAVING state and all tokens",
existing: true,