diff --git a/spec/acceptance/server_instance_spec.rb b/spec/acceptance/server_instance_spec.rb
new file mode 100644
index 0000000000..93192bafb3
--- /dev/null
+++ b/spec/acceptance/server_instance_spec.rb
@@ -0,0 +1,161 @@
+# frozen_string_literal: true
+
+# run a test task
+require 'spec_helper_acceptance'
+
+describe 'postgresql instance test1', if: os[:family] == 'redhat' && os[:release].start_with?('8') do
+  pp = <<-MANIFEST
+  # set global defaults
+  class { 'postgresql::globals':
+    encoding            => 'UTF-8',
+    locale              => 'en_US.UTF-8',
+    manage_package_repo => false,
+    manage_dnf_module   => true,
+    needs_initdb        => true,
+    version             => '13',
+  }
+  # stop default main instance
+  class { 'postgresql::server':
+    service_ensure => 'stopped',
+    service_enable => false,
+  }
+  # define instance test1
+  postgresql::server_instance { 'test1':
+    instance_user        => 'ins_test1',
+    instance_group       => 'ins_test1',
+    instance_directories => {
+      '/opt/pgsql'              => { 'ensure' => 'directory' },
+      '/opt/pgsql/backup'       => { 'ensure' => 'directory' },
+      '/opt/pgsql/data'         => { 'ensure' => 'directory' },
+      '/opt/pgsql/data/13'      => { 'ensure' => 'directory' },
+      '/opt/pgsql/data/home'    => { 'ensure' => 'directory' },
+      '/opt/pgsql/wal'          => { 'ensure' => 'directory' },
+      '/opt/pgsql/log'          => { 'ensure' => 'directory' },
+      '/opt/pgsql/log/13'       => { 'ensure' => 'directory' },
+      '/opt/pgsql/log/13/test1' => { 'ensure' => 'directory' },
+    },
+    config_settings      => {
+      'pg_hba_conf_path'     => '/opt/pgsql/data/13/test1/pg_hba.conf',
+      'postgresql_conf_path' => '/opt/pgsql/data/13/test1/postgresql.conf',
+      'pg_ident_conf_path'   => '/opt/pgsql/data/13/test1/pg_ident.conf',
+      'datadir'              => '/opt/pgsql/data/13/test1',
+      'service_name'         => 'postgresql@13-test1',
+      'port'                 => 5433,
+      'pg_hba_conf_defaults' => false,
+      'manage_selinux'       => true,
+    },
+    service_settings     => {
+      'service_name'   => 'postgresql@13-test1',
+      'service_status' => 'systemctl status postgresql@13-test1.service',
+      'service_ensure' => 'running',
+      'service_enable' => true,
+    },
+    initdb_settings      => {
+      'auth_local'     => 'peer',
+      'auth_host'      => 'md5',
+      'needs_initdb'   => true,
+      'datadir'        => '/opt/pgsql/data/13/test1',
+      'encoding'       => 'UTF-8',
+      'lc_messages'    => 'en_US.UTF8',
+      'locale'         => 'en_US.UTF8',
+      'data_checksums' => false,
+      'group'          => 'postgres',
+      'user'           => 'postgres',
+      'username'       => 'ins_test1',
+    },
+    config_entries       => {
+      'authentication_timeout'         => {
+        'value'   => '1min',
+        'comment' => 'a test',
+      },
+      'log_statement_stats'            => { 'value' => 'off' },
+      'autovacuum_vacuum_scale_factor' => { 'value' => 0.3 },
+    },
+    databases            => {
+      'testdb1' => {
+        'encoding' => 'UTF8',
+        'locale'   => 'en_US.UTF8',
+        'owner'    => 'dba_test1',
+      },
+      'testdb2' => {
+        'encoding' => 'UTF8',
+        'locale'   => 'en_US.UTF8',
+        'owner'    => 'dba_test1',
+      },
+    },
+    roles                => {
+      'ins_test1' => {
+        'superuser' => true,
+        'login'     => true,
+      },
+      'dba_test1' => {
+        'createdb' => true,
+        'login'    => true,
+      },
+      'app_test1' => { 'login' => true },
+      'rep_test1' => {
+        'replication' => true,
+        'login'       => true,
+      },
+      'rou_test1' => { 'login' => true },
+    },
+    pg_hba_rules         => {
+      'local all INSTANCE user'                 => {
+        'type'        => 'local',
+        'database'    => 'all',
+        'user'        => 'ins_test1',
+        'auth_method' => 'peer',
+        'order'       => 1,
+      },
+      'local all DB user'                       => {
+        'type'        => 'local',
+        'database'    => 'all',
+        'user'        => 'dba_test1',
+        'auth_method' => 'peer',
+        'order'       => 2,
+      },
+      'local all APP user'                      => {
+        'type'        => 'local',
+        'database'    => 'all',
+        'user'        => 'app_test1',
+        'auth_method' => 'peer',
+        'order'       => 3,
+      },
+      'local all READONLY user'                 => {
+        'type'        => 'local',
+        'database'    => 'all',
+        'user'        => 'rou_test1',
+        'auth_method' => 'peer',
+        'order'       => 4,
+      },
+      'remote all INSTANCE user PGADMIN server' => {
+        'type'        => 'host',
+        'database'    => 'all',
+        'user'        => 'ins_test1',
+        'address'     => '192.168.22.131/32',
+        'auth_method' => 'md5',
+        'order'       => 5,
+      },
+      'local replication INSTANCE user'         => {
+        'type'        => 'local',
+        'database'    => 'replication',
+        'user'        => 'ins_test1',
+        'auth_method' => 'peer',
+        'order'       => 6,
+      },
+      'local replication REPLICATION user'      => {
+        'type'        => 'local',
+        'database'    => 'replication',
+        'user'        => 'rep_test1',
+        'auth_method' => 'peer',
+        'order'       => 7,
+      },
+    },
+  }
+  MANIFEST
+
+  it 'installs postgres instance test1' do
+    export_locales('en_US.UTF-8 ')
+    apply_manifest(pp, catch_failures: true)
+  end
+end