diff --git a/spec/acceptance/nodesets/centos-7-domain-mode-cluster.yml b/spec/acceptance/nodesets/centos-7-domain-mode-cluster.yml
index 93589f4..a816d3b 100644
--- a/spec/acceptance/nodesets/centos-7-domain-mode-cluster.yml
+++ b/spec/acceptance/nodesets/centos-7-domain-mode-cluster.yml
@@ -1,48 +1,60 @@
 HOSTS:
   master:
     roles:
       - agent
       - default
       - domain_master
     platform: el-7-x86_64
     hypervisor: docker
     image: centos:7
     docker_preserve_image: true
     docker_cmd:
       - '/usr/sbin/init'
     docker_image_commands:
       - 'yum install -y wget which cronie iproute initscripts'
+    docker_env:
+      - LANG=en_US.UTF-8
+      - LANGUAGE=en_US.UTF-8
+      - LC_ALL=en_US.UTF-8
     docker_container_name: 'keycloak-master-el7'
   slave:
     roles:
       - agent
       - domain_slave
     platform: el-7-x86_64
     hypervisor: docker
     image: centos:7
     docker_preserve_image: true
     docker_cmd:
       - '/usr/sbin/init'
     docker_image_commands:
       - 'yum install -y wget which cronie iproute initscripts'
+    docker_env:
+      - LANG=en_US.UTF-8
+      - LANGUAGE=en_US.UTF-8
+      - LC_ALL=en_US.UTF-8
     docker_container_name: 'keycloak-slave-el7'
   db:
     roles:
       - agent
       - db
     platform: el-7-x86_64
     hypervisor: docker
     image: centos:7
     docker_preserve_image: true
     docker_cmd:
       - '/usr/sbin/init'
     docker_image_commands:
       - 'yum install -y wget which cronie iproute initscripts'
+    docker_env:
+      - LANG=en_US.UTF-8
+      - LANGUAGE=en_US.UTF-8
+      - LC_ALL=en_US.UTF-8
     docker_container_name: 'keycloak-db-el7'
 CONFIG:
   log_level: debug
   type: foss
 ssh:
   password: root
   auth_methods: ["password"]
 
diff --git a/spec/spec_helper_acceptance_setup.rb b/spec/spec_helper_acceptance_setup.rb
index b96db6c..dea2d73 100644
--- a/spec/spec_helper_acceptance_setup.rb
+++ b/spec/spec_helper_acceptance_setup.rb
@@ -1,44 +1,59 @@
 RSpec.configure do |c|
   c.add_setting :keycloak_version
   keycloak_version = if ENV['BEAKER_keycloak_version'].nil? || ENV['BEAKER_keycloak_version'].empty?
                        '8.0.1'
                      else
                        ENV['BEAKER_keycloak_version']
                      end
   c.keycloak_version = keycloak_version
   c.add_setting :keycloak_full
   c.keycloak_full = (ENV['BEAKER_keycloak_full'] == 'true' || ENV['BEAKER_keycloak_full'] == 'yes')
   c.add_setting :keycloak_domain_mode_cluster
   c.keycloak_domain_mode_cluster = (ENV['BEAKER_keycloak_domain_mode_cluster'] == 'true' || ENV['BEAKER_keycloak_domain_mode_cluster'] == 'yes')
+
+  c.before(:suite) do
+    if fact('os.release.major').to_i == 7 && fact('os.family') == 'RedHat'
+      on hosts, 'mkdir -p /etc/systemd/system/postgresql.service.d'
+      env_override = <<-EOS
+[Service]
+Environment=LANG=en_US.UTF-8
+Environment=LANGUAGE=en_US.UTF-8
+Environment=LC_ALL=en_US.UTF-8
+      EOS
+      create_remote_file(hosts, '/etc/systemd/system/postgresql.service.d/env.conf', env_override)
+    end
+  end
 end
 
 proj_root = File.expand_path(File.join(File.dirname(__FILE__), '..'))
 scp_to(hosts, File.join(proj_root, 'spec/fixtures/keycloak-duo-spi-jar-with-dependencies.jar'), '/tmp/keycloak-duo-spi-jar-with-dependencies.jar')
 
 hiera_yaml = <<-EOS
 ---
 version: 5
 defaults:
   datadir: data
   data_hash: yaml_data
 hierarchy:
   - name: 'os family major release'
     path: "os/%{facts.os.family}/%{facts.os.release.major}.yaml"
   - name: "Common"
     path: "common.yaml"
 EOS
 # Hack until released: https://github.com/puppetlabs/puppetlabs-mysql/pull/1264
 debian10_yaml = <<-EOS
 mysql::bindings::java_package_name: libmariadb-java
 EOS
 common_yaml = <<-EOS
 ---
 keycloak::version: '#{RSpec.configuration.keycloak_version}'
+postgresql::globals::encoding: 'UTF-8'
+postgresql::globals::locale: 'en_US.UTF-8'
 postgresql::globals::service_status: 'service postgresql status'
 EOS
 
 create_remote_file(hosts, '/etc/puppetlabs/puppet/hiera.yaml', hiera_yaml)
 on hosts, 'mkdir -p /etc/puppetlabs/puppet/data'
 create_remote_file(hosts, '/etc/puppetlabs/puppet/data/common.yaml', common_yaml)
 on hosts, 'mkdir -p /etc/puppetlabs/puppet/data/os/Debian'
 create_remote_file(hosts, '/etc/puppetlabs/puppet/data/os/Debian/10.yaml', debian10_yaml)