diff --git a/CHANGELOG-developer.next.asciidoc b/CHANGELOG-developer.next.asciidoc
index 8f2a8b4fbf5..7eca9675e0f 100644
--- a/CHANGELOG-developer.next.asciidoc
+++ b/CHANGELOG-developer.next.asciidoc
@@ -55,6 +55,7 @@ The list below covers the major changes between 7.0.0-rc2 and master only.
 ==== Bugfixes
 
 - Stop using `mage:import` in community beats. This was ignoring the vendorized beats directory for some mage targets, using the code available in GOPATH, this causes inconsistencies and compilation problems if the version of the code in the GOPATH is different to the vendored one. Use of `mage:import` will continue to be unsupported in custom beats till beats is migrated to go modules, or mage supports vendored dependencies. {issue}13998[13998] {pull}14162[14162]
+- Metricbeat module builders call host parser only once when instantiating light modules. {pull}20149[20149]
 
 ==== Added
 
diff --git a/metricbeat/mb/lightmetricset.go b/metricbeat/mb/lightmetricset.go
index 2354187b4ea..b78b2ef997c 100644
--- a/metricbeat/mb/lightmetricset.go
+++ b/metricbeat/mb/lightmetricset.go
@@ -18,9 +18,6 @@
 package mb
 
 import (
-	"fmt"
-	"net/url"
-
 	"github.com/pkg/errors"
 
 	"github.com/elastic/beats/v7/libbeat/common"
@@ -55,13 +52,17 @@ func (m *LightMetricSet) Registration(r *Register) (MetricSetRegistration, error
 	originalFactory := registration.Factory
 	registration.IsDefault = m.Default
 
+	// Disable the host parser, we will call it as part of the factory so the original
+	// host in the base module is not modified.
+	originalHostParser := registration.HostParser
+	registration.HostParser = nil
+
 	// Light modules factory has to override defaults and reproduce builder
 	// functionality with the resulting configuration, it does:
 	// - Override defaults
 	// - Call module factory if registered (it wouldn't have been called
 	//   if light module is really a registered mixed module)
-	// - Call host parser if defined (it would have already been called
-	//   without the light module defaults)
+	// - Call host parser if there was one defined
 	// - Finally, call the original factory for the registered metricset
 	registration.Factory = func(base BaseMetricSet) (MetricSet, error) {
 		// Override default config on base module and metricset
@@ -83,11 +84,9 @@ func (m *LightMetricSet) Registration(r *Register) (MetricSetRegistration, error
 			base.module = module
 		}
 
-		// At this point host parser was already run, we need to run this again
-		// with the overriden defaults
-		if registration.HostParser != nil {
-			host := m.useHostURISchemeIfPossible(base.host, base.hostData.URI)
-			base.hostData, err = registration.HostParser(base.module, host)
+		// Run the host parser if there was anyone defined
+		if originalHostParser != nil {
+			base.hostData, err = originalHostParser(base.module, base.host)
 			if err != nil {
 				return nil, errors.Wrapf(err, "host parser failed on light metricset factory for '%s/%s'", m.Module, m.Name)
 			}
@@ -100,18 +99,6 @@ func (m *LightMetricSet) Registration(r *Register) (MetricSetRegistration, error
 	return registration, nil
 }
 
-// useHostURISchemeIfPossible method parses given URI to extract protocol scheme and prepend it to the host.
-// It prevents from skipping protocol scheme (e.g. https) while executing HostParser.
-func (m *LightMetricSet) useHostURISchemeIfPossible(host, uri string) string {
-	u, err := url.ParseRequestURI(uri)
-	if err == nil {
-		if u.Scheme != "" {
-			return fmt.Sprintf("%s://%s", u.Scheme, u.Host)
-		}
-	}
-	return host
-}
-
 // baseModule does the configuration overrides in the base module configuration
 // taking into account the light metric set default configurations
 func (m *LightMetricSet) baseModule(from Module) (*BaseModule, error) {