diff --git a/manifests/web.pp b/manifests/web.pp
index b98bb93d9..cb74e7c20 100644
--- a/manifests/web.pp
+++ b/manifests/web.pp
@@ -234,8 +234,8 @@
 ) inherits zabbix::params {
 
   # check osfamily, Arch is currently not supported for web
-  if $facts['os']['family'] == 'Archlinux' {
-    fail('Archlinux is currently not supported for zabbix::web ')
+  if $facts['os']['family'] in [ 'Archlinux', 'Gentoo', ] {
+    fail("${facts['os']['family']} is currently not supported for zabbix::web")
   }
 
   # Only include the repo class if it has not yet been included
diff --git a/spec/classes/agent_spec.rb b/spec/classes/agent_spec.rb
index 73a39b8b6..f6eb221b6 100644
--- a/spec/classes/agent_spec.rb
+++ b/spec/classes/agent_spec.rb
@@ -15,7 +15,7 @@
   on_supported_os.each do |os, facts|
     context "on #{os} " do
       systemd_fact = case facts[:osfamily]
-                     when 'Archlinux', 'Fedora'
+                     when 'Archlinux', 'Fedora', 'Gentoo'
                        { systemd: true }
                      else
                        { systemd: false }
@@ -30,11 +30,20 @@
         facts.merge(systemd_fact)
       end
 
+      if facts[:osfamily] == 'Gentoo'
+        package_name = 'zabbix'
+        service_name = 'zabbix-agentd'
+      else
+        package_name = 'zabbix-agent'
+        service_name = 'zabbix-agent'
+      end
+      # package = facts[:osfamily] == 'Gentoo' ? 'zabbix' : 'zabbix-agent'
+      # service = facts[:osfamily] == 'Gentoo' ? 'zabbix-agentd' : 'zabbix-agent'
+
       context 'with all defaults' do
-        package = 'zabbix-agent'
         # Make sure package will be installed, service running and ensure of directory.
         it do
-          is_expected.to contain_package(package).with(
+          is_expected.to contain_package(package_name).with(
             ensure:   'present',
             require:  'Class[Zabbix::Repo]',
             tag:      'zabbix'
@@ -42,17 +51,17 @@
         end
 
         it do
-          is_expected.to contain_service('zabbix-agent').with(
+          is_expected.to contain_service(service_name).with(
             ensure:     'running',
             enable:     true,
             hasstatus:  true,
             hasrestart: true,
-            require:    "Package[#{package}]"
+            require:    "Package[#{package_name}]"
           )
         end
 
         it { is_expected.to contain_file('/etc/zabbix/zabbix_agentd.d').with_ensure('directory') }
-        it { is_expected.to contain_zabbix__startup('zabbix-agent').that_requires("Package[#{package}]") }
+        it { is_expected.to contain_zabbix__startup(service_name).that_requires("Package[#{package_name}]") }
         it { is_expected.to compile.with_all_deps }
         it { is_expected.to contain_class('zabbix::params') }
       end
@@ -135,12 +144,12 @@
 
       context 'it creates a startup script' do
         case facts[:osfamily]
-        when 'Archlinux', 'Fedora'
-          it { is_expected.to contain_file('/etc/init.d/zabbix-agent').with_ensure('absent') }
-          it { is_expected.to contain_file('/etc/systemd/system/zabbix-agent.service').with_ensure('file') }
+        when 'Archlinux', 'Fedora', 'Gentoo'
+          it { is_expected.to contain_file("/etc/init.d/#{service_name}").with_ensure('absent') }
+          it { is_expected.to contain_file("/etc/systemd/system/#{service_name}.service").with_ensure('file') }
         else
-          it { is_expected.to contain_file('/etc/init.d/zabbix-agent').with_ensure('file') }
-          it { is_expected.not_to contain_file('/etc/systemd/system/zabbix-agent.service') }
+          it { is_expected.to contain_file("/etc/init.d/#{service_name}").with_ensure('file') }
+          it { is_expected.not_to contain_file("/etc/systemd/system/#{service_name}.service") }
         end
       end
 
@@ -151,7 +160,7 @@
           }
         end
 
-        it { is_expected.not_to contain_zabbix__startup('zabbix-agent') }
+        it { is_expected.not_to contain_zabbix__startup(service_name) }
       end
 
       context 'when declaring zabbix_alias' do
@@ -255,8 +264,6 @@
       end
 
       context 'when declaring service_ensure is stopped and service_enable false' do
-        package = 'zabbix-agent'
-
         let :params do
           {
             service_ensure: 'stopped',
@@ -265,10 +272,10 @@
         end
 
         it do
-          is_expected.to contain_service('zabbix-agent').with(
+          is_expected.to contain_service(service_name).with(
             ensure:     'stopped',
             enable:     false,
-            require:    "Package[#{package}]"
+            require:    "Package[#{package_name}]"
           )
         end
       end
diff --git a/spec/classes/database_spec.rb b/spec/classes/database_spec.rb
index c96c98e91..13c9cc3a7 100644
--- a/spec/classes/database_spec.rb
+++ b/spec/classes/database_spec.rb
@@ -5,17 +5,25 @@
     'rspec.puppet.com'
   end
 
-  let :pre_condition do
-    "include 'postgresql::server'
-    include 'mysql::server'"
-  end
-
   on_supported_os.each do |os, facts|
     context "on #{os} " do
       let :facts do
         facts
       end
 
+      let :pre_condition do
+        <<-EOS
+          include 'postgresql::server'
+          if $::osfamily == 'Gentoo' {
+            # We don't need the package to be installed as its the same for the server.
+            class { 'mysql::client':
+              package_manage => false,
+            }
+          }
+          include 'mysql::server'
+        EOS
+      end
+
       describe 'database_type is postgresql, zabbix_type is server and is multiple host setup' do
         let :params do
           {
diff --git a/spec/classes/sender_spec.rb b/spec/classes/sender_spec.rb
index f921e5c83..943ccf549 100644
--- a/spec/classes/sender_spec.rb
+++ b/spec/classes/sender_spec.rb
@@ -25,9 +25,9 @@
           }
         end
 
-        if facts[:osfamily] == 'Archlinux'
+        if %w[Archlinux Gentoo].include?(facts[:osfamily])
           it 'fails' do
-            is_expected.to raise_error(Puppet::Error, %r{Managing a repo on Archlinux is currently not implemented})
+            is_expected.to raise_error(Puppet::Error, %r{Managing a repo on #{facts[:osfamily]} is currently not implemented})
           end
         else
           it { is_expected.to contain_class('zabbix::repo').with_zabbix_version('3.4') }
diff --git a/spec/classes/server_spec.rb b/spec/classes/server_spec.rb
index 739f1a5be..1e4d1cd2d 100644
--- a/spec/classes/server_spec.rb
+++ b/spec/classes/server_spec.rb
@@ -8,8 +8,14 @@
   on_supported_os.each do |os, facts|
     next if facts[:osfamily] == 'Archlinux' # zabbix server is currently not supported on archlinux
     context "on #{os} " do
+      systemd_fact = case facts[:osfamily]
+                     when 'Archlinux', 'Fedora', 'Gentoo'
+                       { systemd: true }
+                     else
+                       { systemd: false }
+                     end
       let :facts do
-        facts
+        facts.merge(systemd_fact)
       end
 
       describe 'with default settings' do
@@ -128,7 +134,7 @@
 
       context 'it creates a startup script' do
         case facts[:osfamily]
-        when 'Archlinux', 'Fedora'
+        when 'Archlinux', 'Fedora', 'Gentoo'
           it { is_expected.to contain_file('/etc/init.d/zabbix-server').with_ensure('absent') }
           it { is_expected.to contain_file('/etc/systemd/system/zabbix-server.service').with_ensure('file') }
         else
diff --git a/spec/classes/web_spec.rb b/spec/classes/web_spec.rb
index 325ba6f2b..831e8fcd3 100644
--- a/spec/classes/web_spec.rb
+++ b/spec/classes/web_spec.rb
@@ -17,7 +17,7 @@
         facts
       end
 
-      if facts[:osfamily] == 'Archlinux'
+      if facts[:osfamily] == 'Archlinux' || facts[:osfamily] == 'Gentoo'
         context 'with all defaults' do
           it { is_expected.not_to compile }
         end
diff --git a/spec/defines/userparameters_spec.rb b/spec/defines/userparameters_spec.rb
index 05d0663f6..2e66ad3de 100644
--- a/spec/defines/userparameters_spec.rb
+++ b/spec/defines/userparameters_spec.rb
@@ -5,7 +5,7 @@
     context "on #{os} " do
       let :facts do
         systemd_fact = case facts[:os]['family']
-                       when 'Archlinux', 'Fedora'
+                       when 'Archlinux', 'Fedora', 'Gentoo'
                          { systemd: true }
                        else
                          { systemd: false }
@@ -15,6 +15,9 @@
       let(:title) { 'mysqld' }
       let(:pre_condition) { 'class { "zabbix::agent": include_dir => "/etc/zabbix/zabbix_agentd.d" }' }
 
+      package = facts[:osfamily] == 'Gentoo' ? 'zabbix' : 'zabbix-agent'
+      service = facts[:osfamily] == 'Gentoo' ? 'zabbix-agentd' : 'zabbix-agent'
+
       context 'with an content' do
         let(:params) { { content: 'UserParameter=mysql.ping,mysqladmin -uroot ping | grep -c alive' } }
 
@@ -23,12 +26,12 @@
         it { is_expected.to contain_class('zabbix::params') }
         it { is_expected.to contain_class('zabbix::repo') }
         it { is_expected.to compile.with_all_deps }
-        it { is_expected.to contain_file('/etc/init.d/zabbix-agent') }
+        it { is_expected.to contain_file("/etc/init.d/#{service}") }
         it { is_expected.to contain_file('/etc/zabbix/zabbix_agentd.conf') }
         it { is_expected.to contain_file('/etc/zabbix/zabbix_agentd.d') }
-        it { is_expected.to contain_package('zabbix-agent') }
-        it { is_expected.to contain_service('zabbix-agent') }
-        it { is_expected.to contain_zabbix__startup('zabbix-agent') }
+        it { is_expected.to contain_package(package) }
+        it { is_expected.to contain_service(service) }
+        it { is_expected.to contain_zabbix__startup(service) }
       end
     end
   end