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clusterlogging.go
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clusterlogging.go
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package logging
import (
"context"
"reflect"
"time"
"github.com/sirupsen/logrus"
"github.com/pkg/errors"
"github.com/rancher/types/apis/apps/v1beta2"
"github.com/rancher/types/apis/core/v1"
"github.com/rancher/types/apis/management.cattle.io/v3"
rbacv1 "github.com/rancher/types/apis/rbac.authorization.k8s.io/v1"
"github.com/rancher/types/config"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/util/flowcontrol"
loggingconfig "github.com/rancher/rancher/pkg/controllers/user/logging/config"
"github.com/rancher/rancher/pkg/controllers/user/logging/generator"
"github.com/rancher/rancher/pkg/controllers/user/logging/utils"
"github.com/rancher/rancher/pkg/ticker"
)
const (
watcherSyncInterval = 1 * time.Minute
retryBackoffInterval = 10 * time.Second
retryTimeout = 5 * time.Minute
)
// ClusterLoggingSyncer listens for clusterLogging CRD in management API
// and update the changes to config
type ClusterLoggingSyncer struct {
backoff *flowcontrol.Backoff
clusterName string
clusterLoggingController v3.ClusterLoggingController
clusterLoggings v3.ClusterLoggingInterface
clusterLoggingLister v3.ClusterLoggingLister
clusterRoleBindings rbacv1.ClusterRoleBindingInterface
clusterLister v3.ClusterLister
daemonsets v1beta2.DaemonSetInterface
deployments v1beta2.DeploymentInterface
podLister v1.PodLister
k8sNodeLister v1.NodeLister
namespaces v1.NamespaceInterface
nodeLister v3.NodeLister
projectLoggingLister v3.ProjectLoggingLister
roles rbacv1.RoleInterface
rolebindings rbacv1.RoleBindingInterface
secrets v1.SecretInterface
services v1.ServiceInterface
serviceLister v1.ServiceLister
serviceAccounts v1.ServiceAccountInterface
}
type endpointWatcher struct {
clusterName string
clusterLoggings v3.ClusterLoggingInterface
clusterLoggingLister v3.ClusterLoggingLister
clusterLister v3.ClusterLister
deployments v1beta2.DeploymentInterface
podLister v1.PodLister
k8sNodeLister v1.NodeLister
nodeLister v3.NodeLister
serviceLister v1.ServiceLister
}
func registerClusterLogging(ctx context.Context, cluster *config.UserContext) {
clusterloggingClient := cluster.Management.Management.ClusterLoggings(cluster.ClusterName)
syncer := &ClusterLoggingSyncer{
backoff: flowcontrol.NewBackOff(retryBackoffInterval, retryTimeout),
clusterLoggingController: cluster.Management.Management.ClusterLoggings(cluster.ClusterName).Controller(),
clusterName: cluster.ClusterName,
clusterLoggings: clusterloggingClient,
clusterLoggingLister: clusterloggingClient.Controller().Lister(),
clusterRoleBindings: cluster.RBAC.ClusterRoleBindings(loggingconfig.LoggingNamespace),
clusterLister: cluster.Management.Management.Clusters("").Controller().Lister(),
daemonsets: cluster.Apps.DaemonSets(loggingconfig.LoggingNamespace),
deployments: cluster.Apps.Deployments(loggingconfig.LoggingNamespace),
k8sNodeLister: cluster.Core.Nodes("").Controller().Lister(),
namespaces: cluster.Core.Namespaces(""),
nodeLister: cluster.Management.Management.Nodes("").Controller().Lister(),
podLister: cluster.Core.Pods("").Controller().Lister(),
projectLoggingLister: cluster.Management.Management.ProjectLoggings("").Controller().Lister(),
roles: cluster.RBAC.Roles(loggingconfig.LoggingNamespace),
rolebindings: cluster.RBAC.RoleBindings(loggingconfig.LoggingNamespace),
secrets: cluster.Core.Secrets(loggingconfig.LoggingNamespace),
services: cluster.Core.Services(loggingconfig.LoggingNamespace),
serviceLister: cluster.Core.Services("").Controller().Lister(),
serviceAccounts: cluster.Core.ServiceAccounts(loggingconfig.LoggingNamespace),
}
endpointWatcher := &endpointWatcher{
clusterName: cluster.ClusterName,
clusterLoggings: clusterloggingClient,
clusterLoggingLister: clusterloggingClient.Controller().Lister(),
k8sNodeLister: cluster.Core.Nodes("").Controller().Lister(),
nodeLister: cluster.Management.Management.Nodes("").Controller().Lister(),
podLister: cluster.Core.Pods("").Controller().Lister(),
serviceLister: cluster.Core.Services("").Controller().Lister(),
}
clusterloggingClient.AddClusterScopedHandler("cluster-logging-controller", cluster.ClusterName, syncer.Sync)
go endpointWatcher.watch(ctx, watcherSyncInterval)
}
func (e *endpointWatcher) watch(ctx context.Context, interval time.Duration) {
for range ticker.Context(ctx, interval) {
if err := e.checkTarget(); err != nil {
logrus.Error(err)
}
}
}
func (c *ClusterLoggingSyncer) Sync(key string, obj *v3.ClusterLogging) error {
if obj == nil || obj.DeletionTimestamp != nil || utils.GetClusterTarget(obj.Spec) == "none" {
isAllDisable, err := utils.CleanResource(c.namespaces, c.clusterLoggingLister, c.projectLoggingLister, obj, nil)
if err != nil {
return err
}
if !isAllDisable {
if err := utils.UnsetSecret(c.secrets, loggingconfig.ClusterLoggingName, "cluster"); err != nil {
return err
}
if err := utils.UnsetSecret(c.secrets, loggingconfig.SSLSecretName, getClusterSecretPrefix(c.clusterName)); err != nil {
return err
}
}
if obj != nil && !reflect.DeepEqual(obj.Spec, obj.Status.AppliedSpec) {
return unsetClusterLogging(obj, c.clusterLoggings)
}
return nil
}
return c.doSync(obj)
}
func (c *ClusterLoggingSyncer) doSync(obj *v3.ClusterLogging) error {
_, err := v3.LoggingConditionProvisioned.Do(obj, func() (runtime.Object, error) {
return obj, provision(c.namespaces, c.secrets, c.serviceAccounts, c.clusterRoleBindings, c.daemonsets, c.clusterLister, c.clusterName)
})
if err != nil {
return err
}
if reflect.DeepEqual(obj.Spec, obj.Status.AppliedSpec) {
return nil
}
return c.update(obj)
}
func (c *ClusterLoggingSyncer) update(obj *v3.ClusterLogging) (err error) {
v3.LoggingConditionUpdated.Unknown(obj)
if err := utils.UpdateSSLAuthentication(getClusterSecretPrefix(c.clusterName), obj.Spec.ElasticsearchConfig, obj.Spec.SplunkConfig, obj.Spec.KafkaConfig, obj.Spec.SyslogConfig, obj.Spec.FluentForwarderConfig, c.secrets); err != nil {
return err
}
return c.createOrUpdateClusterConfig()
}
func (c *ClusterLoggingSyncer) createOrUpdateClusterConfig() error {
clusterLoggingList, err := c.clusterLoggings.Controller().Lister().List("", labels.NewSelector())
if err != nil {
return errors.Wrap(err, "list cluster logging failed")
}
if len(clusterLoggingList) == 0 {
return errors.New("no cluster logging configured")
}
conf := make(map[string]interface{})
wpClusterlogging, err := utils.ToWrapClusterLogging(clusterLoggingList[0].Spec)
if err != nil {
return errors.Wrap(err, "to wraper cluster logging failed")
}
conf["clusterTarget"] = wpClusterlogging
conf["clusterName"] = c.clusterName
err = generator.GenerateConfigFile(loggingconfig.ClusterConfigPath, generator.ClusterTemplate, "cluster", conf)
if err != nil {
return errors.Wrap(err, "generate cluster config file failed")
}
return utils.UpdateConfig(loggingconfig.ClusterConfigPath, loggingconfig.ClusterLoggingName, "cluster", c.secrets)
}
func (e *endpointWatcher) checkTarget() error {
cls, err := e.clusterLoggingLister.List(e.clusterName, labels.NewSelector())
if err != nil {
return errors.Wrapf(err, "list clusterlogging fail in endpoint watcher")
}
if len(cls) == 0 {
return nil
}
obj := cls[0]
_, err = utils.GetWrapConfig(obj.Spec.ElasticsearchConfig, obj.Spec.SplunkConfig, obj.Spec.SyslogConfig, obj.Spec.KafkaConfig, obj.Spec.FluentForwarderConfig)
if err != nil {
return err
}
updatedObj := setClusterLoggingErrMsg(obj, err)
_, updateErr := e.clusterLoggings.Update(updatedObj)
return errors.Wrapf(updateErr, "set clusterlogging fail in watch endpoint")
}
func provision(namespaces v1.NamespaceInterface, secrets v1.SecretInterface, serviceAccounts v1.ServiceAccountInterface, clusterRoleBindings rbacv1.ClusterRoleBindingInterface, daemonsets v1beta2.DaemonSetInterface, clusterLister v3.ClusterLister, clusterName string) error {
if err := utils.IniteNamespace(namespaces); err != nil {
return err
}
if err := utils.InitSecret(secrets); err != nil {
return err
}
cluster, err := clusterLister.Get("", clusterName)
if err != nil {
return errors.Wrapf(err, "get dockerRootDir from cluster %s failed", clusterName)
}
if err := utils.CreateLogAggregator(daemonsets, serviceAccounts, clusterRoleBindings, utils.GetDriverDir(cluster.Status.Driver), loggingconfig.LoggingNamespace); err != nil {
return err
}
return utils.CreateFluentd(daemonsets, serviceAccounts, clusterRoleBindings, loggingconfig.LoggingNamespace, cluster.Spec.DockerRootDir)
}
func unsetClusterLogging(obj *v3.ClusterLogging, clusterLoggings v3.ClusterLoggingInterface) error {
updatedObj := obj.DeepCopy()
updatedObj.Status.AppliedSpec = obj.Spec
updatedObj.Status.FailedSpec = nil
v3.LoggingConditionProvisioned.False(updatedObj)
v3.LoggingConditionProvisioned.Message(updatedObj, "")
v3.LoggingConditionUpdated.False(updatedObj)
v3.LoggingConditionUpdated.Message(updatedObj, "")
_, err := clusterLoggings.Update(updatedObj)
return err
}
func setClusterLoggingErrMsg(obj *v3.ClusterLogging, err error) *v3.ClusterLogging {
updatedObj := obj.DeepCopy()
if err != nil {
updatedObj.Status.FailedSpec = &obj.Spec
v3.LoggingConditionUpdated.False(updatedObj)
v3.LoggingConditionUpdated.Message(updatedObj, err.Error())
return updatedObj
}
updatedObj.Status.FailedSpec = nil
updatedObj.Status.AppliedSpec = obj.Spec
v3.LoggingConditionUpdated.True(updatedObj)
v3.LoggingConditionUpdated.Message(updatedObj, "")
return updatedObj
}
func getClusterSecretPrefix(clusterName string) string {
return "cluster_" + clusterName
}