diff --git a/roles/keycloak/templates/standalone-infinispan.xml.j2 b/roles/keycloak/templates/standalone-infinispan.xml.j2
index b62eed0..8d69564 100644
--- a/roles/keycloak/templates/standalone-infinispan.xml.j2
+++ b/roles/keycloak/templates/standalone-infinispan.xml.j2
@@ -498,21 +498,15 @@
             <stacks>
                 <stack name="tcp">
                     <transport site="${jboss.node.name}" type="TCP" socket-binding="jgroups-tcp"/>
+{% if keycloak_jdbc[keycloak_jdbc_engine].enabled %}
                     <protocol type="JDBC_PING">
                         <property name="datasource_jndi_name">java:jboss/datasources/KeycloakDS</property>
-                        <property name="initialize_sql">
-                            CREATE TABLE IF NOT EXISTS JGROUPSPING (
-                            own_addr varchar(200) NOT NULL,
-                            cluster_name varchar(200) NOT NULL,
-                            updated TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-                            ping_data varbinary(5000) DEFAULT NULL,
-                            PRIMARY KEY (own_addr, cluster_name))
-                            ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin
-                        </property>
+                        <property name="initialize_sql">{{ keycloak_jdbc[keycloak_jdbc_engine].initialize_db }}</property>
                         <property name="insert_single_sql">INSERT INTO JGROUPSPING (own_addr, cluster_name, ping_data) values (?, ?, ?)</property>
                         <property name="delete_single_sql">DELETE FROM JGROUPSPING WHERE own_addr=? AND cluster_name=?</property>
                         <property name="select_all_pingdata_sql">SELECT ping_data FROM JGROUPSPING WHERE cluster_name=?</property>
                     </protocol>
+{% endif %}
                     <protocol type="MERGE3"/>
                     <protocol type="FD_SOCK"/>
                     <protocol type="FD_ALL"/>
diff --git a/roles/keycloak/templates/standalone-rhsso-jdg.xml.j2 b/roles/keycloak/templates/standalone-rhsso-jdg.xml.j2
index 7f1fa6a..6d6a809 100644
--- a/roles/keycloak/templates/standalone-rhsso-jdg.xml.j2
+++ b/roles/keycloak/templates/standalone-rhsso-jdg.xml.j2
@@ -498,21 +498,15 @@
             <stacks>
                 <stack name="tcp">
                     <transport site="${jboss.node.name}" type="TCP" socket-binding="jgroups-tcp"/>
+{% if keycloak_jdbc[keycloak_jdbc_engine].enabled %}
                     <protocol type="JDBC_PING">
                         <property name="datasource_jndi_name">java:jboss/datasources/KeycloakDS</property>
-                        <property name="initialize_sql">
-                            CREATE TABLE IF NOT EXISTS JGROUPSPING (
-                            own_addr varchar(200) NOT NULL,
-                            cluster_name varchar(200) NOT NULL,
-                            updated TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-                            ping_data varbinary(5000) DEFAULT NULL,
-                            PRIMARY KEY (own_addr, cluster_name))
-                            ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin
-                        </property>
+                        <property name="initialize_sql">{{ keycloak_jdbc[keycloak_jdbc_engine].initialize_db }}</property>
                         <property name="insert_single_sql">INSERT INTO JGROUPSPING (own_addr, cluster_name, ping_data) values (?, ?, ?)</property>
                         <property name="delete_single_sql">DELETE FROM JGROUPSPING WHERE own_addr=? AND cluster_name=?</property>
                         <property name="select_all_pingdata_sql">SELECT ping_data FROM JGROUPSPING WHERE cluster_name=?</property>
                     </protocol>
+{% endif %}
                     <protocol type="MERGE3"/>
                     <protocol type="FD_SOCK"/>
                     <protocol type="FD_ALL"/>
diff --git a/roles/keycloak/vars/main.yml b/roles/keycloak/vars/main.yml
index 9731bb6..41dea0e 100644
--- a/roles/keycloak/vars/main.yml
+++ b/roles/keycloak/vars/main.yml
@@ -11,7 +11,7 @@ keycloak_management_url: "http://{{ keycloak_host }}:{{ keycloak_management_http
 # database
 keycloak_jdbc:
   postgres:
-    enabled: "{{ keycloak_ha_enabled and keycloak_jdbc_engine == 'postgres' }}"
+    enabled: "{{ (keycloak_ha_enabled or keycloak_db_enabled) and keycloak_jdbc_engine == 'postgres' }}"
     driver_class: org.postgresql.Driver
     xa_datasource_class: org.postgresql.xa.PGXADataSource
     driver_module_name: "org.postgresql"
@@ -22,8 +22,15 @@ keycloak_jdbc:
     connection_url: "{{ postgres_jdbc_url }}"
     db_user: "{{ postgres_db_user }}"
     db_password: "{{ postgres_db_pass }}"
+    initialize_db: >
+      CREATE TABLE IF NOT EXISTS JGROUPSPING (
+        own_addr varchar(200) NOT NULL,
+        cluster_name varchar(200) NOT NULL,
+        updated TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+        ping_data BYTEA,
+        constraint PK_JGROUPSPING PRIMARY KEY (own_addr, cluster_name))
   mariadb:
-    enabled: "{{ keycloak_ha_enabled and keycloak_jdbc_engine == 'mariadb' }}"
+    enabled: "{{ (keycloak_ha_enabled or keycloak_db_enabled) and keycloak_jdbc_engine == 'mariadb' }}"
     driver_class: org.mariadb.jdbc.Driver
     xa_datasource_class: org.mariadb.jdbc.MySQLDataSource
     driver_module_name: "org.mariadb"
@@ -34,6 +41,14 @@ keycloak_jdbc:
     connection_url: "{{ mariadb_jdbc_url }}"
     db_user: "{{ mariadb_db_user  }}"
     db_password: "{{ mariadb_db_pass }}"
+    initialize_db: >
+      CREATE TABLE IF NOT EXISTS JGROUPSPING (
+        own_addr varchar(200) NOT NULL,
+        cluster_name varchar(200) NOT NULL,
+        updated TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+        ping_data varbinary(5000) DEFAULT NULL,
+        PRIMARY KEY (own_addr, cluster_name))
+      ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin
 
 # reverse proxy mod_cluster
 keycloak_modcluster:
diff --git a/roles/keycloak_realm/README.md b/roles/keycloak_realm/README.md
index d39b2a3..8407505 100644
--- a/roles/keycloak_realm/README.md
+++ b/roles/keycloak_realm/README.md
@@ -4,6 +4,12 @@ keycloak_realm
 Create realms and clients in [keycloak](https://keycloak.org/) or [Red Hat Single Sing-On](https://access.redhat.com/products/red-hat-single-sign-on) services.
 
 
+Requirements
+------------
+
+This role requires `python3-netaddr` library installed on the controller node.
+
+
 Role Defaults
 -------------