[Enhanncement for host.ip and host.mac] Disabling netinfo.enabled opt…

…ion of add-host-metadata processor (elastic#36506)

* adding check for host processor in case of K8s

* Changing variable to ELASTIC_NETINFO

* Updating changelog for variable  ELASTIC_NETINFO

CHANGELOG.next.asciidoc

@@ -11,6 +11,8 @@ https://github.com/elastic/beats/compare/v8.8.1\...main[Check the HEAD diff]
 *Affecting all Beats*
 - Fix status reporting to Elastic-Agent when output configuration is invalid running under Elastic-Agent {pull}35719[35719]
 - Upgrade Go to 1.20.7 {pull}36241[36241]
+- [Enhanncement for host.ip and host.mac] Disabling netinfo.enabled option of add-host-metadata processor {pull}36506[36506]
+  Setting environmental variable ELASTIC_NETINFO:false in Elastic Agent pod will disable the netinfo.enabled option of add_host_metadata processor
 
 *Auditbeat*
 

libbeat/processors/add_host_metadata/config.go

@@ -18,6 +18,7 @@
 package add_host_metadata
 
 import (
+	"os"
 	"time"
 
 	"github.com/elastic/beats/v7/libbeat/processors/util"
@@ -34,10 +35,24 @@ type Config struct {
 }
 
 func defaultConfig() Config {
-	return Config{
-		NetInfoEnabled:      true,
-		CacheTTL:            5 * time.Minute,
-		ExpireUpdateTimeout: time.Second * 10,
-		ReplaceFields:       true,
+	// Setting environmental variable ELASTIC_NETINFO:false in Elastic Agent pod will disable the netinfo.enabled option of add_host_metadata processor
+	// This will result to events not being enhanced with host.ip and host.mac
+	// Related to https://github.com/elastic/integrations/issues/6674
+	valueNETINFO, _ := os.LookupEnv("ELASTIC_NETINFO")
+
+	if valueNETINFO == "false" {
+		return Config{
+			NetInfoEnabled:      false,
+			CacheTTL:            5 * time.Minute,
+			ExpireUpdateTimeout: time.Second * 10,
+			ReplaceFields:       true,
+		}
+	} else {
+		return Config{
+			NetInfoEnabled:      true,
+			CacheTTL:            5 * time.Minute,
+			ExpireUpdateTimeout: time.Second * 10,
+			ReplaceFields:       true,
+		}
 	}
 }