refactor logging options

cmd/ks-apiserver/app/options/options.go

@@ -6,6 +6,7 @@ import (
 	"k8s.io/klog"
 	genericoptions "kubesphere.io/kubesphere/pkg/server/options"
 	"kubesphere.io/kubesphere/pkg/simple/client/devops"
+	esclient "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch"
 	"kubesphere.io/kubesphere/pkg/simple/client/k8s"
 	"kubesphere.io/kubesphere/pkg/simple/client/ldap"
 	"kubesphere.io/kubesphere/pkg/simple/client/mysql"
@@ -31,6 +32,7 @@ type ServerRunOptions struct {
 	S3Options          *s2is3.S3Options
 	RedisOptions       *redis.RedisOptions
 	OpenPitrixOptions  *openpitrix.OpenPitrixOptions
+	LoggingOptions     *esclient.ElasticSearchOptions
 }
 
 func NewServerRunOptions() *ServerRunOptions {
@@ -47,6 +49,7 @@ func NewServerRunOptions() *ServerRunOptions {
 		S3Options:               s2is3.NewS3Options(),
 		RedisOptions:            redis.NewRedisOptions(),
 		OpenPitrixOptions:       openpitrix.NewOpenPitrixOptions(),
+		LoggingOptions:          esclient.NewElasticSearchOptions(),
 	}
 
 	return &s
@@ -65,6 +68,7 @@ func (s *ServerRunOptions) Flags() (fss cliflag.NamedFlagSets) {
 	s.OpenPitrixOptions.AddFlags(fss.FlagSet("openpitrix"))
 	s.ServiceMeshOptions.AddFlags(fss.FlagSet("servicemesh"))
 	s.MonitoringOptions.AddFlags(fss.FlagSet("monitoring"))
+	s.LoggingOptions.AddFlags(fss.FlagSet("logging"))
 
 	fs := fss.FlagSet("klog")
 	local := flag.NewFlagSet("klog", flag.ExitOnError)

cmd/ks-apiserver/app/options/validation.go

@@ -15,6 +15,7 @@ func (s *ServerRunOptions) Validate() []error {
 	errors = append(errors, s.S3Options.Validate()...)
 	errors = append(errors, s.RedisOptions.Validate()...)
 	errors = append(errors, s.OpenPitrixOptions.Validate()...)
+	errors = append(errors, s.LoggingOptions.Validate()...)
 
 	return errors
 }

cmd/ks-apiserver/app/server.go

@@ -29,7 +29,6 @@ import (
 	"kubesphere.io/kubesphere/pkg/apiserver/runtime"
 	"kubesphere.io/kubesphere/pkg/apiserver/servicemesh/tracing"
 	"kubesphere.io/kubesphere/pkg/informers"
-	logging "kubesphere.io/kubesphere/pkg/models/log"
 	"kubesphere.io/kubesphere/pkg/server"
 	apiserverconfig "kubesphere.io/kubesphere/pkg/server/config"
 	"kubesphere.io/kubesphere/pkg/server/filter"
@@ -96,8 +95,6 @@ func Run(s *options.ServerRunOptions, stopCh <-chan struct{}) error {
 
 	initializeServicemeshConfig(s)
 
-	initializeESClientConfig()
-
 	err = CreateAPIServer(s)
 	if err != nil {
 		return err
@@ -126,24 +123,6 @@ func initializeServicemeshConfig(s *options.ServerRunOptions) {
 	kconfig.Set(config)
 }
 
-func initializeESClientConfig() {
-
-	// List all outputs
-	outputs, err := logging.GetFluentbitOutputFromConfigMap()
-	if err != nil {
-		klog.Errorln(err)
-		return
-	}
-
-	// Iterate the outputs to get elasticsearch configs
-	for _, output := range outputs {
-		if configs := logging.ParseEsOutputParams(output.Parameters); configs != nil {
-			configs.WriteESConfigs()
-			return
-		}
-	}
-}
-
 //
 func CreateAPIServer(s *options.ServerRunOptions) error {
 	var err error
@@ -188,7 +167,8 @@ func CreateClientSet(conf *apiserverconfig.Config, stopCh <-chan struct{}) error
 		SetOpenPitrixOptions(conf.OpenPitrixOptions).
 		SetPrometheusOptions(conf.MonitoringOptions).
 		SetRedisOptions(conf.RedisOptions).
-		SetKubeSphereOptions(conf.KubeSphereOptions)
+		SetKubeSphereOptions(conf.KubeSphereOptions).
+		SetElasticSearchOptions(conf.LoggingOptions)
 
 	client.NewClientSetFactory(csop, stopCh)
 
@@ -303,6 +283,7 @@ func Complete(s *options.ServerRunOptions) error {
 		RedisOptions:       s.RedisOptions,
 		S3Options:          s.S3Options,
 		OpenPitrixOptions:  s.OpenPitrixOptions,
+		LoggingOptions:     s.LoggingOptions,
 	})
 
 	s = &options.ServerRunOptions{
@@ -317,6 +298,7 @@ func Complete(s *options.ServerRunOptions) error {
 		RedisOptions:            conf.RedisOptions,
 		S3Options:               conf.S3Options,
 		OpenPitrixOptions:       conf.OpenPitrixOptions,
+		LoggingOptions:          conf.LoggingOptions,
 	}
 
 	return nil

pkg/simple/client/elasticsearch/types.go → pkg/api/logging/v1alpha2/types.go

-package esclient
+package v1alpha2
 
 import (
 	"encoding/json"

pkg/apis/logging/v1alpha2/register.go

@@ -21,11 +21,11 @@ import (
 	"github.com/emicklei/go-restful"
 	"github.com/emicklei/go-restful-openapi"
 	"k8s.io/apimachinery/pkg/runtime/schema"
+	"kubesphere.io/kubesphere/pkg/api/logging/v1alpha2"
 	"kubesphere.io/kubesphere/pkg/apiserver/logging"
 	"kubesphere.io/kubesphere/pkg/apiserver/runtime"
 	"kubesphere.io/kubesphere/pkg/constants"
 	"kubesphere.io/kubesphere/pkg/models/log"
-	esclient "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch"
 	fluentbitclient "kubesphere.io/kubesphere/pkg/simple/client/fluentbit"
 	"net/http"
 )
@@ -66,8 +66,8 @@ func addWebService(c *restful.Container) error {
 		Param(ws.QueryParameter("from", "The offset from the result set. This field returns query results from the specified offset. It requires **operation** is set to query. Defaults to 0 (i.e. from the beginning of the result set).").DataType("integer").DefaultValue("0").Required(false)).
 		Param(ws.QueryParameter("size", "Size of result to return. It requires **operation** is set to query. Defaults to 10 (i.e. 10 log records).").DataType("integer").DefaultValue("10").Required(false)).
 		Metadata(restfulspec.KeyOpenAPITags, []string{constants.LogQueryTag}).
-		Writes(esclient.QueryResult{}).
-		Returns(http.StatusOK, RespOK, esclient.QueryResult{})).
+		Writes(v1alpha2.QueryResult{}).
+		Returns(http.StatusOK, RespOK, v1alpha2.QueryResult{})).
 		Consumes(restful.MIME_JSON, restful.MIME_XML).
 		Produces(restful.MIME_JSON)
 
@@ -91,8 +91,8 @@ func addWebService(c *restful.Container) error {
 		Param(ws.QueryParameter("from", "The offset from the result set. This field returns query results from the specified offset. It requires **operation** is set to query. Defaults to 0 (i.e. from the beginning of the result set).").DataType("integer").DefaultValue("0").Required(false)).
 		Param(ws.QueryParameter("size", "Size of result to return. It requires **operation** is set to query. Defaults to 10 (i.e. 10 log records).").DataType("integer").DefaultValue("10").Required(false)).
 		Metadata(restfulspec.KeyOpenAPITags, []string{constants.LogQueryTag}).
-		Writes(esclient.QueryResult{}).
-		Returns(http.StatusOK, RespOK, esclient.QueryResult{})).
+		Writes(v1alpha2.QueryResult{}).
+		Returns(http.StatusOK, RespOK, v1alpha2.QueryResult{})).
 		Consumes(restful.MIME_JSON, restful.MIME_XML).
 		Produces(restful.MIME_JSON)
 
@@ -114,8 +114,8 @@ func addWebService(c *restful.Container) error {
 		Param(ws.QueryParameter("from", "The offset from the result set. This field returns query results from the specified offset. It requires **operation** is set to query. Defaults to 0 (i.e. from the beginning of the result set).").DataType("integer").DefaultValue("0").Required(false)).
 		Param(ws.QueryParameter("size", "Size of result to return. It requires **operation** is set to query. Defaults to 10 (i.e. 10 log records).").DataType("integer").DefaultValue("10").Required(false)).
 		Metadata(restfulspec.KeyOpenAPITags, []string{constants.LogQueryTag}).
-		Writes(esclient.QueryResult{}).
-		Returns(http.StatusOK, RespOK, esclient.QueryResult{})).
+		Writes(v1alpha2.QueryResult{}).
+		Returns(http.StatusOK, RespOK, v1alpha2.QueryResult{})).
 		Consumes(restful.MIME_JSON, restful.MIME_XML).
 		Produces(restful.MIME_JSON)
 
@@ -136,8 +136,8 @@ func addWebService(c *restful.Container) error {
 		Param(ws.QueryParameter("from", "The offset from the result set. This field returns query results from the specified offset. It requires **operation** is set to query. Defaults to 0 (i.e. from the beginning of the result set).").DataType("integer").DefaultValue("0").Required(false)).
 		Param(ws.QueryParameter("size", "Size of result to return. It requires **operation** is set to query. Defaults to 10 (i.e. 10 log records).").DataType("integer").DefaultValue("10").Required(false)).
 		Metadata(restfulspec.KeyOpenAPITags, []string{constants.LogQueryTag}).
-		Writes(esclient.QueryResult{}).
-		Returns(http.StatusOK, RespOK, esclient.QueryResult{})).
+		Writes(v1alpha2.QueryResult{}).
+		Returns(http.StatusOK, RespOK, v1alpha2.QueryResult{})).
 		Consumes(restful.MIME_JSON, restful.MIME_XML).
 		Produces(restful.MIME_JSON)
 
@@ -156,8 +156,8 @@ func addWebService(c *restful.Container) error {
 		Param(ws.QueryParameter("from", "The offset from the result set. This field returns query results from the specified offset. It requires **operation** is set to query. Defaults to 0 (i.e. from the beginning of the result set).").DataType("integer").DefaultValue("0").Required(false)).
 		Param(ws.QueryParameter("size", "Size of result to return. It requires **operation** is set to query. Defaults to 10 (i.e. 10 log records).").DataType("integer").DefaultValue("10").Required(false)).
 		Metadata(restfulspec.KeyOpenAPITags, []string{constants.LogQueryTag}).
-		Writes(esclient.QueryResult{}).
-		Returns(http.StatusOK, RespOK, esclient.QueryResult{})).
+		Writes(v1alpha2.QueryResult{}).
+		Returns(http.StatusOK, RespOK, v1alpha2.QueryResult{})).
 		Consumes(restful.MIME_JSON, restful.MIME_XML).
 		Produces(restful.MIME_JSON)
 
@@ -175,8 +175,8 @@ func addWebService(c *restful.Container) error {
 		Param(ws.QueryParameter("from", "The offset from the result set. This field returns query results from the specified offset. It requires **operation** is set to query. Defaults to 0 (i.e. from the beginning of the result set).").DataType("integer").DefaultValue("0").Required(false)).
 		Param(ws.QueryParameter("size", "Size of result to return. It requires **operation** is set to query. Defaults to 10 (i.e. 10 log records).").DataType("integer").DefaultValue("10").Required(false)).
 		Metadata(restfulspec.KeyOpenAPITags, []string{constants.LogQueryTag}).
-		Writes(esclient.QueryResult{}).
-		Returns(http.StatusOK, RespOK, esclient.QueryResult{})).
+		Writes(v1alpha2.QueryResult{}).
+		Returns(http.StatusOK, RespOK, v1alpha2.QueryResult{})).
 		Consumes(restful.MIME_JSON, restful.MIME_XML).
 		Produces(restful.MIME_JSON)
 

pkg/apis/tenant/v1alpha2/register.go

@@ -23,15 +23,14 @@ import (
 	"k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	devopsv1alpha2 "kubesphere.io/kubesphere/pkg/api/devops/v1alpha2"
+	"kubesphere.io/kubesphere/pkg/api/logging/v1alpha2"
 	"kubesphere.io/kubesphere/pkg/apis/tenant/v1alpha1"
 	"kubesphere.io/kubesphere/pkg/apiserver/runtime"
 	"kubesphere.io/kubesphere/pkg/apiserver/tenant"
 	"kubesphere.io/kubesphere/pkg/constants"
-	"kubesphere.io/kubesphere/pkg/server/params"
-	"kubesphere.io/kubesphere/pkg/simple/client/elasticsearch"
-
 	"kubesphere.io/kubesphere/pkg/models"
 	"kubesphere.io/kubesphere/pkg/server/errors"
+	"kubesphere.io/kubesphere/pkg/server/params"
 
 	"net/http"
 )
@@ -177,8 +176,8 @@ func addWebService(c *restful.Container) error {
 		Param(ws.QueryParameter("from", "The offset from the result set. This field returns query results from the specified offset. It requires **operation** is set to query. Defaults to 0 (i.e. from the beginning of the result set).").DataType("integer").DefaultValue("0").Required(false)).
 		Param(ws.QueryParameter("size", "Size of result to return. It requires **operation** is set to query. Defaults to 10 (i.e. 10 log records).").DataType("integer").DefaultValue("10").Required(false)).
 		Metadata(restfulspec.KeyOpenAPITags, []string{constants.TenantResourcesTag}).
-		Writes(esclient.Response{}).
-		Returns(http.StatusOK, RespOK, esclient.Response{})).
+		Writes(v1alpha2.Response{}).
+		Returns(http.StatusOK, RespOK, v1alpha2.Response{})).
 		Consumes(restful.MIME_JSON, restful.MIME_XML).
 		Produces(restful.MIME_JSON)
 

pkg/apiserver/logging/logging.go

@@ -21,9 +21,10 @@ package logging
 import (
 	"github.com/emicklei/go-restful"
 	"k8s.io/klog"
+	"kubesphere.io/kubesphere/pkg/api/logging/v1alpha2"
 	"kubesphere.io/kubesphere/pkg/models/log"
 	"kubesphere.io/kubesphere/pkg/server/errors"
-	es "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch"
+	cs "kubesphere.io/kubesphere/pkg/simple/client"
 	fb "kubesphere.io/kubesphere/pkg/simple/client/fluentbit"
 	"kubesphere.io/kubesphere/pkg/utils/stringutils"
 	"net/http"
@@ -32,7 +33,12 @@ import (
 )
 
 func LoggingQueryCluster(request *restful.Request, response *restful.Response) {
-	res := logQuery(log.QueryLevelCluster, request)
+	res, err := logQuery(log.QueryLevelCluster, request)
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusServiceUnavailable, err)
+		return
+	}
+
 	if res.Status != http.StatusOK {
 		response.WriteHeaderAndEntity(res.Status, errors.New(res.Error))
 		return
@@ -42,7 +48,12 @@ func LoggingQueryCluster(request *restful.Request, response *restful.Response) {
 }
 
 func LoggingQueryWorkspace(request *restful.Request, response *restful.Response) {
-	res := logQuery(log.QueryLevelWorkspace, request)
+	res, err := logQuery(log.QueryLevelWorkspace, request)
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusServiceUnavailable, err)
+		return
+	}
+
 	if res.Status != http.StatusOK {
 		response.WriteHeaderAndEntity(res.Status, errors.New(res.Error))
 		return
@@ -52,7 +63,12 @@ func LoggingQueryWorkspace(request *restful.Request, response *restful.Response)
 }
 
 func LoggingQueryNamespace(request *restful.Request, response *restful.Response) {
-	res := logQuery(log.QueryLevelNamespace, request)
+	res, err := logQuery(log.QueryLevelNamespace, request)
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusServiceUnavailable, err)
+		return
+	}
+
 	if res.Status != http.StatusOK {
 		response.WriteHeaderAndEntity(res.Status, errors.New(res.Error))
 		return
@@ -62,7 +78,11 @@ func LoggingQueryNamespace(request *restful.Request, response *restful.Response)
 }
 
 func LoggingQueryWorkload(request *restful.Request, response *restful.Response) {
-	res := logQuery(log.QueryLevelWorkload, request)
+	res, err := logQuery(log.QueryLevelWorkload, request)
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusServiceUnavailable, err)
+		return
+	}
 
 	if res.Status != http.StatusOK {
 		response.WriteHeaderAndEntity(res.Status, errors.New(res.Error))
@@ -73,7 +93,12 @@ func LoggingQueryWorkload(request *restful.Request, response *restful.Response)
 }
 
 func LoggingQueryPod(request *restful.Request, response *restful.Response) {
-	res := logQuery(log.QueryLevelPod, request)
+	res, err := logQuery(log.QueryLevelPod, request)
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusServiceUnavailable, err)
+		return
+	}
+
 	if res.Status != http.StatusOK {
 		response.WriteHeaderAndEntity(res.Status, errors.New(res.Error))
 		return
@@ -82,7 +107,12 @@ func LoggingQueryPod(request *restful.Request, response *restful.Response) {
 }
 
 func LoggingQueryContainer(request *restful.Request, response *restful.Response) {
-	res := logQuery(log.QueryLevelContainer, request)
+	res, err := logQuery(log.QueryLevelContainer, request)
+	if err != nil {
+		response.WriteHeaderAndEntity(http.StatusServiceUnavailable, err)
+		return
+	}
+
 	if res.Status != http.StatusOK {
 		response.WriteHeaderAndEntity(res.Status, errors.New(res.Error))
 		return
@@ -158,9 +188,14 @@ func LoggingDeleteFluentbitOutput(request *restful.Request, response *restful.Re
 	response.WriteAsJson(res)
 }
 
-func logQuery(level log.LogQueryLevel, request *restful.Request) *es.QueryResult {
+func logQuery(level log.LogQueryLevel, request *restful.Request) (*v1alpha2.QueryResult, error) {
+	es, err := cs.ClientSets().ElasticSearch()
+	if err != nil {
+		klog.Error(err)
+		return nil, err
+	}
 
-	var param es.QueryParameters
+	var param v1alpha2.QueryParameters
 
 	switch level {
 	case log.QueryLevelCluster:
@@ -226,7 +261,6 @@ func logQuery(level log.LogQueryLevel, request *restful.Request) *es.QueryResult
 	param.EndTime = request.QueryParameter("end_time")
 	param.Sort = request.QueryParameter("sort")
 
-	var err error
 	param.From, err = strconv.ParseInt(request.QueryParameter("from"), 10, 64)
 	if err != nil {
 		param.From = 0
@@ -236,5 +270,5 @@ func logQuery(level log.LogQueryLevel, request *restful.Request) *es.QueryResult
 		param.Size = 10
 	}
 
-	return es.Query(param)
+	return es.Query(param), nil
 }

pkg/apiserver/tenant/tenant.go

@@ -24,7 +24,8 @@ import (
 	k8serr "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/util/net"
 	"k8s.io/klog"
-	"kubesphere.io/kubesphere/pkg/api/devops/v1alpha2"
+	devopsv1alpha2 "kubesphere.io/kubesphere/pkg/api/devops/v1alpha2"
+	loggingv1alpha2 "kubesphere.io/kubesphere/pkg/api/logging/v1alpha2"
 	"kubesphere.io/kubesphere/pkg/apis/tenant/v1alpha1"
 	"kubesphere.io/kubesphere/pkg/apiserver/logging"
 	"kubesphere.io/kubesphere/pkg/constants"
@@ -36,7 +37,6 @@ import (
 	"kubesphere.io/kubesphere/pkg/server/errors"
 	"kubesphere.io/kubesphere/pkg/server/params"
 
-	"kubesphere.io/kubesphere/pkg/simple/client/elasticsearch"
 	"kubesphere.io/kubesphere/pkg/utils/sliceutil"
 	"net/http"
 	"strings"
@@ -286,7 +286,7 @@ func CreateDevopsProject(req *restful.Request, resp *restful.Response) {
 	workspaceName := req.PathParameter("workspace")
 	username := req.HeaderParameter(constants.UserNameHeader)
 
-	var devops v1alpha2.DevOpsProject
+	var devops devopsv1alpha2.DevOpsProject
 
 	err := req.ReadEntity(&devops)
 
@@ -374,7 +374,7 @@ func LogQuery(req *restful.Request, resp *restful.Response) {
 		// if the user belongs to no namespace
 		// then no log visible
 		if len(namespaces) == 0 {
-			res := esclient.QueryResult{Status: http.StatusOK}
+			res := loggingv1alpha2.QueryResult{Status: http.StatusOK}
 			resp.WriteAsJson(res)
 			return
 		} else if len(queryNamespaces) == 1 && queryNamespaces[0] == "" {
@@ -382,7 +382,7 @@ func LogQuery(req *restful.Request, resp *restful.Response) {
 		} else {
 			inter := intersection(queryNamespaces, namespaces)
 			if len(inter) == 0 {
-				res := esclient.QueryResult{Status: http.StatusOK}
+				res := loggingv1alpha2.QueryResult{Status: http.StatusOK}
 				resp.WriteAsJson(res)
 				return
 			}

pkg/models/log/logcrd.go

@@ -26,8 +26,8 @@ import (
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/rest"
 	"k8s.io/klog"
+	"kubesphere.io/kubesphere/pkg/api/logging/v1alpha2"
 	"kubesphere.io/kubesphere/pkg/informers"
-	es "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch"
 	fb "kubesphere.io/kubesphere/pkg/simple/client/fluentbit"
 	"net/http"
 	"strings"
@@ -102,12 +102,6 @@ func FluentbitOutputInsert(output fb.OutputPlugin) *FluentbitOutputsResult {
 		return &result
 	}
 
-	// 3. If it's an configs output added, reset configs client configs
-	configs := ParseEsOutputParams(output.Parameters)
-	if configs != nil {
-		configs.WriteESConfigs()
-	}
-
 	result.Status = http.StatusOK
 	return &result
 }
@@ -155,12 +149,6 @@ func FluentbitOutputUpdate(output fb.OutputPlugin, id string) *FluentbitOutputsR
 		return &result
 	}
 
-	// 3. If it's an configs output updated, reset configs client configs
-	configs := ParseEsOutputParams(output.Parameters)
-	if configs != nil {
-		configs.WriteESConfigs()
-	}
-
 	result.Status = http.StatusOK
 	return &result
 }
@@ -333,7 +321,7 @@ func syncFluentbitCRDOutputWithConfigMap(outputs []fb.OutputPlugin) error {
 }
 
 // Parse es host, port and index
-func ParseEsOutputParams(params []fb.Parameter) *es.Config {
+func ParseEsOutputParams(params []fb.Parameter) *v1alpha2.Config {
 
 	var (
 		isEsFound bool
@@ -377,5 +365,5 @@ func ParseEsOutputParams(params []fb.Parameter) *es.Config {
 		}
 	}
 
-	return &es.Config{Host: host, Port: port, Index: index}
+	return &v1alpha2.Config{Host: host, Port: port, Index: index}
 }

pkg/server/config/config.go

@@ -7,11 +7,14 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/klog"
 	"kubesphere.io/kubesphere/pkg/apiserver/runtime"
+	"kubesphere.io/kubesphere/pkg/simple/client/alerting"
 	"kubesphere.io/kubesphere/pkg/simple/client/devops"
+	"kubesphere.io/kubesphere/pkg/simple/client/elasticsearch"
 	"kubesphere.io/kubesphere/pkg/simple/client/k8s"
 	"kubesphere.io/kubesphere/pkg/simple/client/kubesphere"
 	"kubesphere.io/kubesphere/pkg/simple/client/ldap"
 	"kubesphere.io/kubesphere/pkg/simple/client/mysql"
+	"kubesphere.io/kubesphere/pkg/simple/client/notification"
 	"kubesphere.io/kubesphere/pkg/simple/client/openpitrix"
 	"kubesphere.io/kubesphere/pkg/simple/client/prometheus"
 	"kubesphere.io/kubesphere/pkg/simple/client/redis"
@@ -136,22 +139,33 @@ type Config struct {
 	S3Options          *s2is3.S3Options                `json:"s3,omitempty" yaml:"s3,omitempty" mapstructure:"s3"`
 	OpenPitrixOptions  *openpitrix.OpenPitrixOptions   `json:"openpitrix,omitempty" yaml:"openpitrix,omitempty" mapstructure:"openpitrix"`
 	MonitoringOptions  *prometheus.PrometheusOptions   `json:"monitoring,omitempty" yaml:"monitoring,omitempty" mapstructure:"monitoring"`
-	KubeSphereOptions  *kubesphere.KubeSphereOptions   `json:"-" yaml:"kubesphere,omitempty" mapstructure:"kubesphere"`
+	LoggingOptions     *esclient.ElasticSearchOptions  `json:"logging,omitempty" yaml:"logging,omitempty" mapstructure:"logging"`
+
+	// Options below are only loaded from configuration file, no command line flags for these options now.
+	KubeSphereOptions *kubesphere.KubeSphereOptions `json:"-" yaml:"kubesphere,omitempty" mapstructure:"kubesphere"`
+
+	// Options used for enabling components, not actually used now. Once we switch Alerting/Notification API to kubesphere,
+	// we can add these options to kubesphere command lines
+	AlertingOptions     *alerting.AlertingOptions         `json:"alerting,omitempty" yaml:"alerting,omitempty" mapstructure:"alerting"`
+	NotificationOptions *notification.NotificationOptions `json:"notification,omitempty" yaml:"notification,omitempty" mapstructure:"notification"`
 }
 
 func newConfig() *Config {
 	return &Config{
-		MySQLOptions:       mysql.NewMySQLOptions(),
-		DevopsOptions:      devops.NewDevopsOptions(),
-		SonarQubeOptions:   sonarqube.NewSonarQubeOptions(),
-		KubernetesOptions:  k8s.NewKubernetesOptions(),
-		ServiceMeshOptions: servicemesh.NewServiceMeshOptions(),
-		LdapOptions:        ldap.NewLdapOptions(),
-		RedisOptions:       redis.NewRedisOptions(),
-		S3Options:          s2is3.NewS3Options(),
-		OpenPitrixOptions:  openpitrix.NewOpenPitrixOptions(),
-		MonitoringOptions:  prometheus.NewPrometheusOptions(),
-		KubeSphereOptions:  kubesphere.NewKubeSphereOptions(),
+		MySQLOptions:        mysql.NewMySQLOptions(),
+		DevopsOptions:       devops.NewDevopsOptions(),
+		SonarQubeOptions:    sonarqube.NewSonarQubeOptions(),
+		KubernetesOptions:   k8s.NewKubernetesOptions(),
+		ServiceMeshOptions:  servicemesh.NewServiceMeshOptions(),
+		LdapOptions:         ldap.NewLdapOptions(),
+		RedisOptions:        redis.NewRedisOptions(),
+		S3Options:           s2is3.NewS3Options(),
+		OpenPitrixOptions:   openpitrix.NewOpenPitrixOptions(),
+		MonitoringOptions:   prometheus.NewPrometheusOptions(),
+		KubeSphereOptions:   kubesphere.NewKubeSphereOptions(),
+		AlertingOptions:     alerting.NewAlertingOptions(),
+		NotificationOptions: notification.NewNotificationOptions(),
+		LoggingOptions:      esclient.NewElasticSearchOptions(),
 	}
 }
 
@@ -162,6 +176,10 @@ func Get() *Config {
 func (c *Config) Apply(conf *Config) {
 	shadowConfig = conf
 
+	if conf.LoggingOptions != nil {
+		conf.LoggingOptions.ApplyTo(c.LoggingOptions)
+	}
+
 	if conf.KubeSphereOptions != nil {
 		conf.KubeSphereOptions.ApplyTo(c.KubeSphereOptions)
 	}
@@ -246,4 +264,16 @@ func (c *Config) stripEmptyOptions() {
 		c.S3Options = nil
 	}
 
+	if c.AlertingOptions != nil && c.AlertingOptions.Endpoint == "" {
+		c.AlertingOptions = nil
+	}
+
+	if c.LoggingOptions != nil && c.LoggingOptions.Host == "" {
+		c.LoggingOptions = nil
+	}
+
+	if c.NotificationOptions != nil && c.NotificationOptions.Endpoint == "" {
+		c.NotificationOptions = nil
+	}
+
 }

pkg/server/config/config_test.go

@@ -4,11 +4,14 @@ import (
 	"fmt"
 	"gopkg.in/yaml.v2"
 	"io/ioutil"
+	"kubesphere.io/kubesphere/pkg/simple/client/alerting"
 	"kubesphere.io/kubesphere/pkg/simple/client/devops"
+	esclient "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch"
 	"kubesphere.io/kubesphere/pkg/simple/client/k8s"
 	"kubesphere.io/kubesphere/pkg/simple/client/kubesphere"
 	"kubesphere.io/kubesphere/pkg/simple/client/ldap"
 	"kubesphere.io/kubesphere/pkg/simple/client/mysql"
+	"kubesphere.io/kubesphere/pkg/simple/client/notification"
 	"kubesphere.io/kubesphere/pkg/simple/client/openpitrix"
 	"kubesphere.io/kubesphere/pkg/simple/client/prometheus"
 	"kubesphere.io/kubesphere/pkg/simple/client/redis"
@@ -83,10 +86,24 @@ func newTestConfig() *Config {
 			Endpoint:          "http://prometheus.kubesphere-monitoring-system.svc",
 			SecondaryEndpoint: "http://prometheus.kubesphere-monitoring-system.svc",
 		},
+		LoggingOptions: &esclient.ElasticSearchOptions{
+			Host:           "http://elasticsearch-logging.kubesphere-logging-system.svc:9200",
+			LogstashFormat: false,
+			Index:          "",
+			LogstashPrefix: "elk",
+			Match:          "kube.*",
+			Version:        "6",
+		},
 		KubeSphereOptions: &kubesphere.KubeSphereOptions{
 			APIServer:     "http://ks-apiserver.kubesphere-system.svc",
 			AccountServer: "http://ks-account.kubesphere-system.svc",
 		},
+		AlertingOptions: &alerting.AlertingOptions{
+			Endpoint: "http://alerting.kubesphere-alerting-system.svc:9200",
+		},
+		NotificationOptions: &notification.NotificationOptions{
+			Endpoint: "http://notification.kubesphere-alerting-system.svc:9200",
+		},
 	}
 	return conf
 }

pkg/simple/client/alerting/options.go

+package alerting
+
+type AlertingOptions struct {
+	Endpoint string
+}
+
+func NewAlertingOptions() *AlertingOptions {
+	return &AlertingOptions{
+		Endpoint: "",
+	}
+}
+
+func (s *AlertingOptions) ApplyTo(options *AlertingOptions) {
+	if s.Endpoint != "" {
+		options.Endpoint = s.Endpoint
+	}
+}

pkg/simple/client/elasticsearch/esclient.go

@@ -13,13 +13,17 @@ limitations under the License.
 package esclient
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"k8s.io/klog"
+	"kubesphere.io/kubesphere/pkg/api/logging/v1alpha2"
+	v5 "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch/versions/v5"
+	v6 "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch/versions/v6"
+	v7 "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch/versions/v7"
 	"net/http"
 	"strconv"
 	"strings"
-	"sync"
 	"time"
 
 	"github.com/json-iterator/go"
@@ -49,48 +53,109 @@ const (
 	fieldContainerNameKeyword = "kubernetes.container_name.keyword"
 )
 
-var jsonIter = jsoniter.ConfigCompatibleWithStandardLibrary
+const (
+	ElasticV5 = "5"
+	ElasticV6 = "6"
+	ElasticV7 = "7"
+)
 
-var (
-	mu     sync.Mutex
-	config *Config
+var jsonIter = jsoniter.ConfigCompatibleWithStandardLibrary
 
+type ElasticSearchClient struct {
 	client Client
-)
+}
 
-func (cfg *Config) WriteESConfigs() {
-	mu.Lock()
-	defer mu.Unlock()
+func NewLoggingClient(options *ElasticSearchOptions) (*ElasticSearchClient, error) {
+	version := "6"
+	esClient := &ElasticSearchClient{}
 
-	config = cfg
-	if err := detectVersionMajor(config); err != nil {
-		klog.Errorln(err)
-		client = nil
-		return
+	if options.Version == "" {
+		var err error
+		version, err = detectVersionMajor(options.Host)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if options.LogstashFormat {
+		if options.LogstashPrefix != "" {
+			options.Index = options.LogstashPrefix
+		} else {
+			options.Index = "logstash"
+		}
+	}
+
+	switch version {
+	case ElasticV5:
+		esClient.client = v5.New(options.Host, options.Index)
+	case ElasticV6:
+		esClient.client = v6.New(options.Host, options.Index)
+	case ElasticV7:
+		esClient.client = v7.New(options.Host, options.Index)
+	default:
+		return nil, fmt.Errorf("unsupported elasticsearch version %s", version)
+	}
+
+	return esClient, nil
+}
+
+func (c *ElasticSearchClient) ES() *Client {
+	return &c.client
+}
+
+func detectVersionMajor(host string) (string, error) {
+
+	// Info APIs are backward compatible with versions of v5.x, v6.x and v7.x
+	es := v6.New(host, "")
+	res, err := es.Client.Info(
+		es.Client.Info.WithContext(context.Background()),
+	)
+	if err != nil {
+		return "", err
+	}
+
+	defer res.Body.Close()
+
+	var b map[string]interface{}
+	if err = json.NewDecoder(res.Body).Decode(&b); err != nil {
+		return "", err
+	}
+	if res.IsError() {
+		// Print the response status and error information.
+		e, _ := b["error"].(map[string]interface{})
+		return "", fmt.Errorf("[%s] %s: %s", res.Status(), e["type"], e["reason"])
+	}
+
+	// get the major version
+	version, _ := b["version"].(map[string]interface{})
+	number, _ := version["number"].(string)
+	if number == "" {
+		return "", fmt.Errorf("failed to detect elastic version number")
 	}
 
-	client = NewForConfig(config)
+	v := strings.Split(number, ".")[0]
+	return v, nil
 }
 
-func createQueryRequest(param QueryParameters) (int, []byte, error) {
-	var request Request
-	var mainBoolQuery BoolFilter
+func createQueryRequest(param v1alpha2.QueryParameters) (int, []byte, error) {
+	var request v1alpha2.Request
+	var mainBoolQuery v1alpha2.BoolFilter
 
 	if len(param.NamespaceWithCreationTime) != 0 {
-		var boolShould BoolShould
+		var boolShould v1alpha2.BoolShould
 		for namespace, creationTime := range param.NamespaceWithCreationTime {
-			var boolFilter BoolFilter
+			var boolFilter v1alpha2.BoolFilter
 
-			matchPhrase := MatchPhrase{MatchPhrase: map[string]string{fieldNamespaceNameKeyword: namespace}}
-			rangeQuery := RangeQuery{RangeSpec{TimeRange{creationTime, ""}}}
+			matchPhrase := v1alpha2.MatchPhrase{MatchPhrase: map[string]string{fieldNamespaceNameKeyword: namespace}}
+			rangeQuery := v1alpha2.RangeQuery{RangeSpec: v1alpha2.RangeSpec{TimeRange: v1alpha2.TimeRange{Gte: creationTime, Lte: ""}}}
 
 			boolFilter.Filter = append(boolFilter.Filter, matchPhrase)
 			boolFilter.Filter = append(boolFilter.Filter, rangeQuery)
 
-			boolShould.Should = append(boolShould.Should, BoolQuery{Bool: boolFilter})
+			boolShould.Should = append(boolShould.Should, v1alpha2.BoolQuery{Bool: boolFilter})
 		}
 		boolShould.MinimumShouldMatch = 1
-		mainBoolQuery.Filter = append(mainBoolQuery.Filter, BoolQuery{Bool: boolShould})
+		mainBoolQuery.Filter = append(mainBoolQuery.Filter, v1alpha2.BoolQuery{Bool: boolShould})
 	}
 	if param.WorkloadFilter != nil {
 		boolQuery := makeBoolShould(regexpQuery, fieldPodNameKeyword, param.WorkloadFilter)
@@ -122,15 +187,15 @@ func createQueryRequest(param QueryParameters) (int, []byte, error) {
 		mainBoolQuery.Filter = append(mainBoolQuery.Filter, boolQuery)
 	}
 
-	rangeQuery := RangeQuery{RangeSpec{TimeRange{param.StartTime, param.EndTime}}}
+	rangeQuery := v1alpha2.RangeQuery{RangeSpec: v1alpha2.RangeSpec{TimeRange: v1alpha2.TimeRange{Gte: param.StartTime, Lte: param.EndTime}}}
 	mainBoolQuery.Filter = append(mainBoolQuery.Filter, rangeQuery)
 
 	var operation int
 
 	if param.Operation == "statistics" {
 		operation = OperationStatistics
-		containerAgg := AggField{"kubernetes.docker_id.keyword"}
-		statisticAggs := StatisticsAggs{ContainerAgg{containerAgg}}
+		containerAgg := v1alpha2.AggField{Field: "kubernetes.docker_id.keyword"}
+		statisticAggs := v1alpha2.StatisticsAggs{ContainerAgg: v1alpha2.ContainerAgg{Cardinality: containerAgg}}
 		request.Aggs = statisticAggs
 		request.Size = 0
 	} else if param.Operation == "histogram" {
@@ -142,7 +207,7 @@ func createQueryRequest(param QueryParameters) (int, []byte, error) {
 			interval = "15m"
 		}
 		param.Interval = interval
-		request.Aggs = HistogramAggs{HistogramAgg{DateHistogram{"time", interval}}}
+		request.Aggs = v1alpha2.HistogramAggs{HistogramAgg: v1alpha2.HistogramAgg{DateHistogram: v1alpha2.DateHistogram{Field: "time", Interval: interval}}}
 		request.Size = 0
 	} else {
 		operation = OperationQuery
@@ -154,25 +219,25 @@ func createQueryRequest(param QueryParameters) (int, []byte, error) {
 		} else {
 			order = "desc"
 		}
-		request.Sorts = append(request.Sorts, Sort{Order{order}})
+		request.Sorts = append(request.Sorts, v1alpha2.Sort{Order: v1alpha2.Order{Order: order}})
 
-		var mainHighLight MainHighLight
-		mainHighLight.Fields = append(mainHighLight.Fields, LogHighLightField{})
-		mainHighLight.Fields = append(mainHighLight.Fields, NamespaceHighLightField{})
-		mainHighLight.Fields = append(mainHighLight.Fields, PodHighLightField{})
-		mainHighLight.Fields = append(mainHighLight.Fields, ContainerHighLightField{})
+		var mainHighLight v1alpha2.MainHighLight
+		mainHighLight.Fields = append(mainHighLight.Fields, v1alpha2.LogHighLightField{})
+		mainHighLight.Fields = append(mainHighLight.Fields, v1alpha2.NamespaceHighLightField{})
+		mainHighLight.Fields = append(mainHighLight.Fields, v1alpha2.PodHighLightField{})
+		mainHighLight.Fields = append(mainHighLight.Fields, v1alpha2.ContainerHighLightField{})
 		mainHighLight.FragmentSize = 0
 		request.MainHighLight = mainHighLight
 	}
 
-	request.MainQuery = BoolQuery{mainBoolQuery}
+	request.MainQuery = v1alpha2.BoolQuery{Bool: mainBoolQuery}
 
 	queryRequest, err := json.Marshal(request)
 
 	return operation, queryRequest, err
 }
 
-func makeBoolShould(queryType int, field string, list []string) BoolQuery {
+func makeBoolShould(queryType int, field string, list []string) v1alpha2.BoolQuery {
 	var should []interface{}
 	for _, phrase := range list {
 
@@ -180,18 +245,18 @@ func makeBoolShould(queryType int, field string, list []string) BoolQuery {
 
 		switch queryType {
 		case matchPhrase:
-			q = MatchPhrase{MatchPhrase: map[string]string{field: phrase}}
+			q = v1alpha2.MatchPhrase{MatchPhrase: map[string]string{field: phrase}}
 		case matchPhrasePrefix:
-			q = MatchPhrasePrefix{MatchPhrasePrefix: map[string]string{field: phrase}}
+			q = v1alpha2.MatchPhrasePrefix{MatchPhrasePrefix: map[string]string{field: phrase}}
 		case regexpQuery:
-			q = RegexpQuery{Regexp: map[string]string{field: makePodNameRegexp(phrase)}}
+			q = v1alpha2.RegexpQuery{Regexp: map[string]string{field: makePodNameRegexp(phrase)}}
 		}
 
 		should = append(should, q)
 	}
 
-	return BoolQuery{
-		Bool: BoolShould{
+	return v1alpha2.BoolQuery{
+		Bool: v1alpha2.BoolShould{
 			Should:             should,
 			MinimumShouldMatch: 1,
 		},
@@ -244,10 +309,10 @@ func calcTimestamp(input string) int64 {
 	return ret
 }
 
-func parseQueryResult(operation int, param QueryParameters, body []byte) *QueryResult {
-	var queryResult QueryResult
+func (c *ElasticSearchClient) parseQueryResult(operation int, param v1alpha2.QueryParameters, body []byte) *v1alpha2.QueryResult {
+	var queryResult v1alpha2.QueryResult
 
-	var response Response
+	var response v1alpha2.Response
 	err := jsonIter.Unmarshal(body, &response)
 	if err != nil {
 		klog.Errorln(err)
@@ -273,12 +338,12 @@ func parseQueryResult(operation int, param QueryParameters, body []byte) *QueryR
 
 	switch operation {
 	case OperationQuery:
-		var readResult ReadResult
-		readResult.Total = client.GetTotalHitCount(response.Hits.Total)
+		var readResult v1alpha2.ReadResult
+		readResult.Total = c.client.GetTotalHitCount(response.Hits.Total)
 		readResult.From = param.From
 		readResult.Size = param.Size
 		for _, hit := range response.Hits.Hits {
-			var logRecord LogRecord
+			var logRecord v1alpha2.LogRecord
 			logRecord.Time = calcTimestamp(hit.Source.Time)
 			logRecord.Log = hit.Source.Log
 			logRecord.Namespace = hit.Source.Kubernetes.Namespace
@@ -291,7 +356,7 @@ func parseQueryResult(operation int, param QueryParameters, body []byte) *QueryR
 		queryResult.Read = &readResult
 
 	case OperationStatistics:
-		var statisticsResponse StatisticsResponseAggregations
+		var statisticsResponse v1alpha2.StatisticsResponseAggregations
 		err := jsonIter.Unmarshal(response.Aggregations, &statisticsResponse)
 		if err != nil && response.Aggregations != nil {
 			klog.Errorln(err)
@@ -299,17 +364,17 @@ func parseQueryResult(operation int, param QueryParameters, body []byte) *QueryR
 			queryResult.Error = err.Error()
 			return &queryResult
 		}
-		queryResult.Statistics = &StatisticsResult{Containers: statisticsResponse.ContainerCount.Value, Logs: client.GetTotalHitCount(response.Hits.Total)}
+		queryResult.Statistics = &v1alpha2.StatisticsResult{Containers: statisticsResponse.ContainerCount.Value, Logs: c.client.GetTotalHitCount(response.Hits.Total)}
 
 	case OperationHistogram:
-		var histogramResult HistogramResult
-		histogramResult.Total = client.GetTotalHitCount(response.Hits.Total)
+		var histogramResult v1alpha2.HistogramResult
+		histogramResult.Total = c.client.GetTotalHitCount(response.Hits.Total)
 		histogramResult.StartTime = calcTimestamp(param.StartTime)
 		histogramResult.EndTime = calcTimestamp(param.EndTime)
 		histogramResult.Interval = param.Interval
 
-		var histogramAggregations HistogramAggregations
-		err := jsonIter.Unmarshal(response.Aggregations, &histogramAggregations)
+		var histogramAggregations v1alpha2.HistogramAggregations
+		err = jsonIter.Unmarshal(response.Aggregations, &histogramAggregations)
 		if err != nil && response.Aggregations != nil {
 			klog.Errorln(err)
 			queryResult.Status = http.StatusInternalServerError
@@ -317,7 +382,7 @@ func parseQueryResult(operation int, param QueryParameters, body []byte) *QueryR
 			return &queryResult
 		}
 		for _, histogram := range histogramAggregations.HistogramAggregation.Histograms {
-			var histogramRecord HistogramRecord
+			var histogramRecord v1alpha2.HistogramRecord
 			histogramRecord.Time = histogram.Time
 			histogramRecord.Count = histogram.Count
 
@@ -332,30 +397,30 @@ func parseQueryResult(operation int, param QueryParameters, body []byte) *QueryR
 	return &queryResult
 }
 
-func Query(param QueryParameters) *QueryResult {
+func (c *ElasticSearchClient) Query(param v1alpha2.QueryParameters) *v1alpha2.QueryResult {
 
-	var queryResult = new(QueryResult)
+	var queryResult = new(v1alpha2.QueryResult)
 
 	if param.NamespaceNotFound {
-		queryResult = new(QueryResult)
+		queryResult = new(v1alpha2.QueryResult)
 		queryResult.Status = http.StatusOK
 		switch param.Operation {
 		case "statistics":
-			queryResult.Statistics = new(StatisticsResult)
+			queryResult.Statistics = new(v1alpha2.StatisticsResult)
 		case "histogram":
-			queryResult.Histogram = &HistogramResult{
+			queryResult.Histogram = &v1alpha2.HistogramResult{
 				StartTime: calcTimestamp(param.StartTime),
 				EndTime:   calcTimestamp(param.EndTime),
 				Interval:  param.Interval}
 		default:
-			queryResult.Read = new(ReadResult)
+			queryResult.Read = new(v1alpha2.ReadResult)
 		}
 		return queryResult
 	}
 
-	if client == nil {
+	if c.client == nil {
 		queryResult.Status = http.StatusBadRequest
-		queryResult.Error = fmt.Sprintf("Invalid elasticsearch address: host=%s, port=%s", config.Host, config.Port)
+		queryResult.Error = "can not create elastic search client"
 		return queryResult
 	}
 
@@ -367,16 +432,16 @@ func Query(param QueryParameters) *QueryResult {
 		return queryResult
 	}
 
-	body, err := client.Search(query)
+	body, err := c.client.Search(query)
 	if err != nil {
 		klog.Errorln(err)
-		queryResult = new(QueryResult)
+		queryResult = new(v1alpha2.QueryResult)
 		queryResult.Status = http.StatusInternalServerError
 		queryResult.Error = err.Error()
 		return queryResult
 	}
 
-	queryResult = parseQueryResult(operation, param, body)
+	queryResult = c.parseQueryResult(operation, param, body)
 
 	return queryResult
 }

pkg/simple/client/elasticsearch/interface.go

 package esclient
 
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	v5 "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch/versions/v5"
-	v6 "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch/versions/v6"
-	v7 "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch/versions/v7"
-	"strings"
-)
-
-const (
-	ElasticV5 = "5"
-	ElasticV6 = "6"
-	ElasticV7 = "7"
-)
-
 type Client interface {
 	// Perform Search API
 	Search(body []byte) ([]byte, error)
 	GetTotalHitCount(v interface{}) int64
 }
-
-func NewForConfig(cfg *Config) Client {
-	address := fmt.Sprintf("http://%s:%s", cfg.Host, cfg.Port)
-	index := cfg.Index
-	switch cfg.VersionMajor {
-	case ElasticV5:
-		return v5.New(address, index)
-	case ElasticV6:
-		return v6.New(address, index)
-	case ElasticV7:
-		return v7.New(address, index)
-	default:
-		return nil
-	}
-}
-
-func detectVersionMajor(cfg *Config) error {
-
-	// Info APIs are backward compatible with versions of v5.x, v6.x and v7.x
-	address := fmt.Sprintf("http://%s:%s", cfg.Host, cfg.Port)
-	es := v6.New(address, "")
-	res, err := es.Client.Info(
-		es.Client.Info.WithContext(context.Background()),
-	)
-	if err != nil {
-		return err
-	}
-	defer res.Body.Close()
-
-	var b map[string]interface{}
-	if err := json.NewDecoder(res.Body).Decode(&b); err != nil {
-		return err
-	}
-	if res.IsError() {
-		// Print the response status and error information.
-		e, _ := b["error"].(map[string]interface{})
-		return fmt.Errorf("[%s] %s: %s", res.Status(), e["type"], e["reason"])
-	}
-
-	// get the major version
-	version, _ := b["version"].(map[string]interface{})
-	number, _ := version["number"].(string)
-	if number == "" {
-		return fmt.Errorf("failed to detect elastic version number")
-	}
-
-	cfg.VersionMajor = strings.Split(number, ".")[0]
-	return nil
-}

pkg/simple/client/elasticsearch/options.go

+package esclient
+
+import (
+	"github.com/spf13/pflag"
+	"kubesphere.io/kubesphere/pkg/utils/reflectutils"
+)
+
+type ElasticSearchOptions struct {
+	Host           string `json:"host,omitempty" yaml:"host,omitempty"`
+	LogstashFormat bool   `json:"logstashFormat,omitempty" yaml:"logstashFormat,omitempty"`
+	Index          string `json:",omitempty" yaml:",omitempty"`
+	LogstashPrefix string `json:"logstashPrefix,omitempty" yaml:"logstashPrefix,omitempty"`
+	Match          string `json:",omitempty" yaml:",omitempty"`
+	Version        string `json:",omitempty" yaml:",omitempty"`
+}
+
+func NewElasticSearchOptions() *ElasticSearchOptions {
+	return &ElasticSearchOptions{
+		Host:           "",
+		LogstashFormat: false,
+		Index:          "fluentbit",
+		LogstashPrefix: "",
+		Match:          "kube.*",
+		Version:        "6",
+	}
+}
+
+func (s *ElasticSearchOptions) ApplyTo(options *ElasticSearchOptions) {
+	if s.Host != "" {
+		reflectutils.Override(options, s)
+	}
+}
+
+func (s *ElasticSearchOptions) Validate() []error {
+	errs := []error{}
+
+	return errs
+}
+
+func (s *ElasticSearchOptions) AddFlags(fs *pflag.FlagSet) {
+	fs.StringVar(&s.Host, "elasticsearch-host", s.Host, ""+
+		"ElasticSearch logging service host. KubeSphere is using elastic as log store, "+
+		"if this filed left blank, KubeSphere will use kubernetes builtin log API instead, and"+
+		" the following elastic search options will be ignored.")
+
+	fs.BoolVar(&s.LogstashFormat, "logstash-format", s.LogstashFormat, ""+
+		"Whether to toggle logstash format compatibility.")
+
+	fs.StringVar(&s.LogstashPrefix, "logstash-prefix", s.LogstashPrefix, ""+
+		"If logstash-format is enabled, the Index name is composed using a prefix and the date,"+
+		"e.g: If logstash-prefix is equals to 'mydata' your index will become 'mydata-YYYY.MM.DD'."+
+		"The last string appended belongs to the date when the data is being generated.")
+
+	fs.StringVar(&s.Match, "elasticsearch-match", s.Match, ""+
+		"The regex match for index, eg. kube.*")
+
+	fs.StringVar(&s.Index, "elasticsearch-index", s.Index, ""+
+		"Index name.")
+
+	fs.StringVar(&s.Version, "elasticsearch-version", s.Version, ""+
+		"ElasticSearch major version, e.g. 5/6/7, if left blank, will detect automatically."+
+		"Currently, minimum supported version is 5.x")
+}

pkg/simple/client/elasticsearch/versions/v5/elasticsearch.go

@@ -14,16 +14,16 @@ type Elastic struct {
 	index  string
 }
 
-func New(address string, index string) Elastic {
+func New(address string, index string) *Elastic {
 
 	client, _ := elasticsearch.NewClient(elasticsearch.Config{
 		Addresses: []string{address},
 	})
 
-	return Elastic{client: client, index: index}
+	return &Elastic{client: client, index: index}
 }
 
-func (e Elastic) Search(body []byte) ([]byte, error) {
+func (e *Elastic) Search(body []byte) ([]byte, error) {
 
 	response, err := e.client.Search(
 		e.client.Search.WithContext(context.Background()),
@@ -49,7 +49,7 @@ func (e Elastic) Search(body []byte) ([]byte, error) {
 	return ioutil.ReadAll(response.Body)
 }
 
-func (e Elastic) GetTotalHitCount(v interface{}) int64 {
+func (e *Elastic) GetTotalHitCount(v interface{}) int64 {
 	f, _ := v.(float64)
 	return int64(f)
 }

pkg/simple/client/elasticsearch/versions/v6/elasticsearch.go

@@ -14,16 +14,16 @@ type Elastic struct {
 	index  string
 }
 
-func New(address string, index string) Elastic {
+func New(address string, index string) *Elastic {
 
 	client, _ := elasticsearch.NewClient(elasticsearch.Config{
 		Addresses: []string{address},
 	})
 
-	return Elastic{Client: client, index: index}
+	return &Elastic{Client: client, index: index}
 }
 
-func (e Elastic) Search(body []byte) ([]byte, error) {
+func (e *Elastic) Search(body []byte) ([]byte, error) {
 
 	response, err := e.Client.Search(
 		e.Client.Search.WithContext(context.Background()),
@@ -49,7 +49,7 @@ func (e Elastic) Search(body []byte) ([]byte, error) {
 	return ioutil.ReadAll(response.Body)
 }
 
-func (e Elastic) GetTotalHitCount(v interface{}) int64 {
+func (e *Elastic) GetTotalHitCount(v interface{}) int64 {
 	f, _ := v.(float64)
 	return int64(f)
 }

pkg/simple/client/elasticsearch/versions/v7/elasticsearch.go

@@ -14,16 +14,16 @@ type Elastic struct {
 	index  string
 }
 
-func New(address string, index string) Elastic {
+func New(address string, index string) *Elastic {
 
 	client, _ := elasticsearch.NewClient(elasticsearch.Config{
 		Addresses: []string{address},
 	})
 
-	return Elastic{client: client, index: index}
+	return &Elastic{client: client, index: index}
 }
 
-func (e Elastic) Search(body []byte) ([]byte, error) {
+func (e *Elastic) Search(body []byte) ([]byte, error) {
 
 	response, err := e.client.Search(
 		e.client.Search.WithContext(context.Background()),
@@ -50,7 +50,7 @@ func (e Elastic) Search(body []byte) ([]byte, error) {
 	return ioutil.ReadAll(response.Body)
 }
 
-func (e Elastic) GetTotalHitCount(v interface{}) int64 {
+func (e *Elastic) GetTotalHitCount(v interface{}) int64 {
 	m, _ := v.(map[string]interface{})
 	f, _ := m["value"].(float64)
 	return int64(f)

pkg/simple/client/factory.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	goredis "github.com/go-redis/redis"
 	"kubesphere.io/kubesphere/pkg/simple/client/devops"
+	esclient "kubesphere.io/kubesphere/pkg/simple/client/elasticsearch"
 	"kubesphere.io/kubesphere/pkg/simple/client/k8s"
 	"kubesphere.io/kubesphere/pkg/simple/client/kubesphere"
 	"kubesphere.io/kubesphere/pkg/simple/client/ldap"
@@ -25,30 +26,32 @@ func (e ClientSetNotEnabledError) Error() string {
 }
 
 type ClientSetOptions struct {
-	mySQLOptions      *mysql.MySQLOptions
-	redisOptions      *redis.RedisOptions
-	kubernetesOptions *k8s.KubernetesOptions
-	devopsOptions     *devops.DevopsOptions
-	sonarqubeOptions  *sonarqube.SonarQubeOptions
-	ldapOptions       *ldap.LdapOptions
-	s3Options         *s2is3.S3Options
-	openPitrixOptions *openpitrix.OpenPitrixOptions
-	prometheusOptions *prometheus.PrometheusOptions
-	kubesphereOptions *kubesphere.KubeSphereOptions
+	mySQLOptions        *mysql.MySQLOptions
+	redisOptions        *redis.RedisOptions
+	kubernetesOptions   *k8s.KubernetesOptions
+	devopsOptions       *devops.DevopsOptions
+	sonarqubeOptions    *sonarqube.SonarQubeOptions
+	ldapOptions         *ldap.LdapOptions
+	s3Options           *s2is3.S3Options
+	openPitrixOptions   *openpitrix.OpenPitrixOptions
+	prometheusOptions   *prometheus.PrometheusOptions
+	kubesphereOptions   *kubesphere.KubeSphereOptions
+	elasticSearhOptions *esclient.ElasticSearchOptions
 }
 
 func NewClientSetOptions() *ClientSetOptions {
 	return &ClientSetOptions{
-		mySQLOptions:      mysql.NewMySQLOptions(),
-		redisOptions:      redis.NewRedisOptions(),
-		kubernetesOptions: k8s.NewKubernetesOptions(),
-		ldapOptions:       ldap.NewLdapOptions(),
-		devopsOptions:     devops.NewDevopsOptions(),
-		sonarqubeOptions:  sonarqube.NewSonarQubeOptions(),
-		s3Options:         s2is3.NewS3Options(),
-		openPitrixOptions: openpitrix.NewOpenPitrixOptions(),
-		prometheusOptions: prometheus.NewPrometheusOptions(),
-		kubesphereOptions: kubesphere.NewKubeSphereOptions(),
+		mySQLOptions:        mysql.NewMySQLOptions(),
+		redisOptions:        redis.NewRedisOptions(),
+		kubernetesOptions:   k8s.NewKubernetesOptions(),
+		ldapOptions:         ldap.NewLdapOptions(),
+		devopsOptions:       devops.NewDevopsOptions(),
+		sonarqubeOptions:    sonarqube.NewSonarQubeOptions(),
+		s3Options:           s2is3.NewS3Options(),
+		openPitrixOptions:   openpitrix.NewOpenPitrixOptions(),
+		prometheusOptions:   prometheus.NewPrometheusOptions(),
+		kubesphereOptions:   kubesphere.NewKubeSphereOptions(),
+		elasticSearhOptions: esclient.NewElasticSearchOptions(),
 	}
 }
 
@@ -102,6 +105,11 @@ func (c *ClientSetOptions) SetKubeSphereOptions(options *kubesphere.KubeSphereOp
 	return c
 }
 
+func (c *ClientSetOptions) SetElasticSearchOptions(options *esclient.ElasticSearchOptions) *ClientSetOptions {
+	c.elasticSearhOptions = options
+	return c
+}
+
 // ClientSet provide best of effort service to initialize clients,
 // but there is no guarantee to return a valid client instance,
 // so do validity check before use
@@ -111,15 +119,16 @@ type ClientSet struct {
 
 	mySQLClient *mysql.MySQLClient
 
-	k8sClient        *k8s.KubernetesClient
-	ldapClient       *ldap.LdapClient
-	devopsClient     *devops.DevopsClient
-	sonarQubeClient  *sonarqube.SonarQubeClient
-	redisClient      *redis.RedisClient
-	s3Client         *s2is3.S3Client
-	prometheusClient *prometheus.PrometheusClient
-	openpitrixClient *openpitrix.OpenPitrixClient
-	kubesphereClient *kubesphere.KubeSphereClient
+	k8sClient           *k8s.KubernetesClient
+	ldapClient          *ldap.LdapClient
+	devopsClient        *devops.DevopsClient
+	sonarQubeClient     *sonarqube.SonarQubeClient
+	redisClient         *redis.RedisClient
+	s3Client            *s2is3.S3Client
+	prometheusClient    *prometheus.PrometheusClient
+	openpitrixClient    *openpitrix.OpenPitrixClient
+	kubesphereClient    *kubesphere.KubeSphereClient
+	elasticSearchClient *esclient.ElasticSearchClient
 }
 
 var mutex sync.Mutex
@@ -335,3 +344,27 @@ func (cs *ClientSet) Prometheus() (*prometheus.PrometheusClient, error) {
 func (cs *ClientSet) KubeSphere() *kubesphere.KubeSphereClient {
 	return cs.kubesphereClient
 }
+
+func (cs *ClientSet) ElasticSearch() (*esclient.ElasticSearchClient, error) {
+	var err error
+
+	if cs.csoptions.elasticSearhOptions == nil || cs.csoptions.elasticSearhOptions.Host == "" {
+		return nil, ClientSetNotEnabledError{}
+	}
+
+	if cs.elasticSearchClient != nil {
+		return cs.elasticSearchClient, nil
+	} else {
+		mutex.Lock()
+		defer mutex.Unlock()
+
+		if cs.elasticSearchClient == nil {
+			cs.elasticSearchClient, err = esclient.NewLoggingClient(cs.csoptions.elasticSearhOptions)
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		return cs.elasticSearchClient, nil
+	}
+}

pkg/simple/client/notification/options.go

+package notification
+
+type NotificationOptions struct {
+	Endpoint string
+}
+
+func NewNotificationOptions() *NotificationOptions {
+	return &NotificationOptions{
+		Endpoint: "",
+	}
+}
+
+func (s *NotificationOptions) ApplyTo(options *NotificationOptions) {
+	if s.Endpoint != "" {
+		options.Endpoint = s.Endpoint
+	}
+}