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deployer.go
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deployer.go
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package deployer
import (
"fmt"
"reflect"
"time"
"github.com/rancher/norman/controller"
alertutil "github.com/rancher/rancher/pkg/controllers/user/alert/common"
"github.com/rancher/rancher/pkg/controllers/user/alert/manager"
"github.com/rancher/rancher/pkg/controllers/user/helm/common"
monitorutil "github.com/rancher/rancher/pkg/monitoring"
"github.com/rancher/rancher/pkg/namespace"
projectutil "github.com/rancher/rancher/pkg/project"
"github.com/rancher/rancher/pkg/ref"
"github.com/rancher/rancher/pkg/settings"
"github.com/rancher/rancher/pkg/systemaccount"
appsv1beta2 "github.com/rancher/types/apis/apps/v1beta2"
v1 "github.com/rancher/types/apis/core/v1"
mgmtv3 "github.com/rancher/types/apis/management.cattle.io/v3"
projectv3 "github.com/rancher/types/apis/project.cattle.io/v3"
rbacv1 "github.com/rancher/types/apis/rbac.authorization.k8s.io/v1"
"github.com/rancher/types/config"
"golang.org/x/sync/errgroup"
"gopkg.in/yaml.v2"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
)
var (
creatorIDAnn = "field.cattle.io/creatorId"
systemProjectLabel = map[string]string{"authz.management.cattle.io/system-project": "true"}
)
type Deployer struct {
clusterName string
alertManager *manager.AlertManager
clusterAlertGroupLister mgmtv3.ClusterAlertGroupLister
projectAlertGroupLister mgmtv3.ProjectAlertGroupLister
notifierLister mgmtv3.NotifierLister
projectLister mgmtv3.ProjectLister
clusters mgmtv3.ClusterInterface
appDeployer *appDeployer
operaterDeployer *operaterDeployer
}
type appDeployer struct {
appsGetter projectv3.AppsGetter
namespaces v1.NamespaceInterface
secrets v1.SecretInterface
templateVersions mgmtv3.CatalogTemplateVersionInterface
statefulsets appsv1beta2.StatefulSetInterface
systemAccountManager *systemaccount.Manager
deployments appsv1beta2.DeploymentInterface
}
type operaterDeployer struct {
templateVersions mgmtv3.CatalogTemplateVersionInterface
projectsGetter mgmtv3.ProjectsGetter
appsGetter projectv3.AppsGetter
rbacs rbacv1.Interface
cores v1.Interface
apps appsv1beta2.Interface
}
func NewDeployer(cluster *config.UserContext, manager *manager.AlertManager) *Deployer {
appsgetter := cluster.Management.Project
ad := &appDeployer{
appsGetter: appsgetter,
namespaces: cluster.Core.Namespaces(metav1.NamespaceAll),
secrets: cluster.Core.Secrets(metav1.NamespaceAll),
templateVersions: cluster.Management.Management.CatalogTemplateVersions(namespace.GlobalNamespace),
statefulsets: cluster.Apps.StatefulSets(metav1.NamespaceAll),
systemAccountManager: systemaccount.NewManager(cluster.Management),
deployments: cluster.Apps.Deployments(metav1.NamespaceAll),
}
op := &operaterDeployer{
templateVersions: cluster.Management.Management.CatalogTemplateVersions(namespace.GlobalNamespace),
projectsGetter: cluster.Management.Management,
appsGetter: appsgetter,
rbacs: cluster.RBAC,
cores: cluster.Core,
}
return &Deployer{
clusterName: cluster.ClusterName,
alertManager: manager,
clusterAlertGroupLister: cluster.Management.Management.ClusterAlertGroups(cluster.ClusterName).Controller().Lister(),
projectAlertGroupLister: cluster.Management.Management.ProjectAlertGroups(metav1.NamespaceAll).Controller().Lister(),
notifierLister: cluster.Management.Management.Notifiers(cluster.ClusterName).Controller().Lister(),
projectLister: cluster.Management.Management.Projects(cluster.ClusterName).Controller().Lister(),
clusters: cluster.Management.Management.Clusters(metav1.NamespaceAll),
appDeployer: ad,
operaterDeployer: op,
}
}
func (d *Deployer) ProjectGroupSync(key string, alert *mgmtv3.ProjectAlertGroup) (runtime.Object, error) {
return nil, d.sync()
}
func (d *Deployer) ClusterGroupSync(key string, alert *mgmtv3.ClusterAlertGroup) (runtime.Object, error) {
return nil, d.sync()
}
func (d *Deployer) ProjectRuleSync(key string, alert *mgmtv3.ProjectAlertRule) (runtime.Object, error) {
return nil, d.sync()
}
func (d *Deployer) ClusterRuleSync(key string, alert *mgmtv3.ClusterAlertRule) (runtime.Object, error) {
return nil, d.sync()
}
// //deploy or clean up resources(alertmanager deployment, service, namespace) required by alerting.
func (d *Deployer) sync() error {
appName, appTargetNamespace := monitorutil.ClusterAlertManagerInfo()
systemProject, err := projectutil.GetSystemProject(d.clusterName, d.projectLister)
if err != nil {
return err
}
systemProjectID := ref.Ref(systemProject)
needDeploy, err := d.needDeploy()
if err != nil {
return fmt.Errorf("check alertmanager deployment failed, %v", err)
}
cluster, err := d.clusters.Get(d.clusterName, metav1.GetOptions{})
if err != nil {
return fmt.Errorf("get cluster %s failed, %v", d.clusterName, err)
}
newCluster := cluster.DeepCopy()
newCluster.Spec.EnableClusterAlerting = needDeploy
if needDeploy {
operatorAppName, operatorAppNamespace := monitorutil.SystemMonitoringInfo()
operatorWorkload, err := d.appDeployer.deployments.GetNamespaced(operatorAppNamespace, fmt.Sprintf("prometheus-operator-%s", operatorAppName), metav1.GetOptions{})
if err != nil && !apierrors.IsNotFound(err) {
return fmt.Errorf("get deployment %s/prometheus-operator-%s failed, %v", operatorAppNamespace, operatorAppName, err)
}
if operatorWorkload == nil || operatorWorkload.DeletionTimestamp != nil {
d.clusters.Controller().Enqueue(metav1.NamespaceAll, d.clusterName)
}
if !reflect.DeepEqual(cluster, newCluster) {
_, err = d.clusters.Update(newCluster)
if err != nil {
return fmt.Errorf("update cluster %v failed, %v", d.clusterName, err)
}
cluster, err := d.clusters.Get(d.clusterName, metav1.GetOptions{})
if err != nil {
return fmt.Errorf("get cluster %s failed, %v", d.clusterName, err)
}
newCluster = cluster.DeepCopy()
}
if d.alertManager.IsDeploy, err = d.appDeployer.deploy(appName, appTargetNamespace, systemProjectID); err != nil {
return fmt.Errorf("deploy alertmanager failed, %v", err)
}
if err = d.appDeployer.isDeploySuccess(newCluster, alertutil.GetAlertManagerDaemonsetName(appName), appTargetNamespace); err != nil {
return err
}
} else {
if d.alertManager.IsDeploy, err = d.appDeployer.cleanup(appName, appTargetNamespace, systemProjectID); err != nil {
return fmt.Errorf("clean up alertmanager failed, %v", err)
}
mgmtv3.ClusterConditionAlertingEnabled.False(newCluster)
}
if !reflect.DeepEqual(cluster, newCluster) {
_, err = d.clusters.Update(newCluster)
if err != nil {
return fmt.Errorf("update cluster %v failed, %v", d.clusterName, err)
}
}
return nil
}
// //only deploy the alertmanager when notifier is configured and alert is using it.
func (d *Deployer) needDeploy() (bool, error) {
notifiers, err := d.notifierLister.List("", labels.NewSelector())
if err != nil {
return false, err
}
if len(notifiers) == 0 {
return false, err
}
clusterAlerts, err := d.clusterAlertGroupLister.List("", labels.NewSelector())
if err != nil {
return false, err
}
for _, alert := range clusterAlerts {
if len(alert.Spec.Recipients) > 0 {
return true, nil
}
}
projectAlerts, err := d.projectAlertGroupLister.List("", labels.NewSelector())
if err != nil {
return false, nil
}
for _, alert := range projectAlerts {
if controller.ObjectInCluster(d.clusterName, alert) {
if len(alert.Spec.Recipients) > 0 {
return true, nil
}
}
}
return false, nil
}
func (d *appDeployer) isDeploySuccess(cluster *mgmtv3.Cluster, appName, appTargetNamespace string) error {
_, err := mgmtv3.ClusterConditionAlertingEnabled.DoUntilTrue(cluster, func() (runtime.Object, error) {
_, err := d.statefulsets.GetNamespaced(appTargetNamespace, appName, metav1.GetOptions{})
if err != nil {
if apierrors.IsNotFound(err) {
time.Sleep(5 * time.Second)
}
return nil, fmt.Errorf("failed to get Alertmanager Deployment information, %v", err)
}
return cluster, nil
})
return err
}
func (d *appDeployer) cleanup(appName, appTargetNamespace, systemProjectID string) (bool, error) {
_, systemProjectName := ref.Parse(systemProjectID)
var errgrp errgroup.Group
errgrp.Go(func() error {
return d.appsGetter.Apps(systemProjectName).Delete(appName, &metav1.DeleteOptions{})
})
errgrp.Go(func() error {
secretName := alertutil.GetAlertManagerSecretName(appName)
return d.secrets.DeleteNamespaced(appTargetNamespace, secretName, &metav1.DeleteOptions{})
})
if err := errgrp.Wait(); err != nil && !apierrors.IsNotFound(err) {
return false, err
}
return false, nil
}
func (d *appDeployer) getSecret(secretName, secretNamespace string) *corev1.Secret {
cfg := manager.GetAlertManagerDefaultConfig()
data, err := yaml.Marshal(cfg)
if err != nil {
return nil
}
return &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Namespace: secretNamespace,
Name: secretName,
},
Data: map[string][]byte{
"alertmanager.yaml": data,
"notification.tmpl": []byte(NotificationTmpl),
},
}
}
func (d *appDeployer) deploy(appName, appTargetNamespace, systemProjectID string) (bool, error) {
clusterName, systemProjectName := ref.Parse(systemProjectID)
ns := &corev1.Namespace{
ObjectMeta: metav1.ObjectMeta{
Name: appTargetNamespace,
},
}
if _, err := d.namespaces.Create(ns); err != nil && !apierrors.IsAlreadyExists(err) {
return false, fmt.Errorf("create ns %s failed, %v", appTargetNamespace, err)
}
secretName := alertutil.GetAlertManagerSecretName(appName)
secret := d.getSecret(secretName, appTargetNamespace)
if _, err := d.secrets.Create(secret); err != nil && !apierrors.IsAlreadyExists(err) {
return false, fmt.Errorf("create secret %s:%s failed, %v", appTargetNamespace, appName, err)
}
app, err := d.appsGetter.Apps(systemProjectName).Get(appName, metav1.GetOptions{})
if err != nil && !apierrors.IsNotFound(err) {
return false, fmt.Errorf("failed to query %q App in %s Project, %v", appName, systemProjectName, err)
}
if app.Name == appName {
if app.DeletionTimestamp != nil {
return false, fmt.Errorf("stale %q App in %s Project is still on terminating", appName, systemProjectName)
}
return true, nil
}
catalogID := settings.SystemMonitoringCatalogID.Get()
templateVersionID, templateVersionNamespace, err := common.ParseExternalID(catalogID)
if err != nil {
return false, fmt.Errorf("failed to parse catalog ID %q, %v", catalogID, err)
}
if _, err := d.templateVersions.GetNamespaced(templateVersionNamespace, templateVersionID, metav1.GetOptions{}); err != nil {
return false, fmt.Errorf("failed to find catalog by ID %q, %v", catalogID, err)
}
creator, err := d.systemAccountManager.GetSystemUser(clusterName)
if err != nil {
return false, err
}
app = &projectv3.App{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
creatorIDAnn: creator.Name,
},
Labels: monitorutil.OwnedLabels(appName, appTargetNamespace, systemProjectID, monitorutil.SystemLevel),
Name: appName,
Namespace: systemProjectName,
},
Spec: projectv3.AppSpec{
Answers: map[string]string{
"alertmanager.enabled": "true",
"alertmanager.serviceMonitor.enabled": "true",
"alertmanager.apiGroup": monitorutil.APIVersion.Group,
"alertmanager.enabledRBAC": "false",
"alertmanager.configFromSecret": secret.Name,
"operator.enabled": "false",
},
Description: "Alertmanager for Rancher Monitoring",
ExternalID: catalogID,
ProjectName: systemProjectID,
TargetNamespace: appTargetNamespace,
},
}
if _, err := d.appsGetter.Apps(systemProjectName).Create(app); err != nil && !apierrors.IsAlreadyExists(err) {
return false, fmt.Errorf("failed to create %q App, %v", appName, err)
}
return true, nil
}