diff --git a/docker-compose.yml b/docker-compose.yml
index f7257d4..c9cde15 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -30,10 +30,33 @@
         - "${OPENHAB_OSGI_BIND:-127.0.0.1}:${OPENHAB_OSGI_PORT:-5555}:5555"
       networks:
         openhab-network:
-          ipv4_address: 172.55.55.100
+          ipv4_address: ${IPV4_NETWORK:-172.55.55}.100
           aliases:
             - openhab-main
 
+    db-openhab:
+      image: mariadb:10.3
+      restart: always
+      command: mysqld --skip-name-resolve --skip-host-cache --log-warnings=0
+      healthcheck:
+        test: ["CMD", "mysqladmin", "-u$OPENHAB_DATABASE_USER", "-p$OPENHAB_DATABASE_PASSWORD",  "ping", "-h", "localhost"]
+        interval: 30s
+        timeout: 30s
+        retries: 10
+      environment:
+        - MYSQL_ROOT_PASSWORD=${OPENHAB_DATABASE_ROOT}
+        - MYSQL_DATABASE=${OPENHAB_DATABASE_NAME}
+        - MYSQL_USER=${OPENHAB_DATABASE_USER}
+        - MYSQL_PASSWORD=${OPENHAB_DATABASE_PASSWORD}
+      volumes:
+        - ./data/db/:/var/lib/mysql/
+        - ./data/conf/mysql:/etc/mysql/conf.d/:ro
+      networks:
+        openhab-network:
+          ipv4_address: ${IPV4_NETWORK:-172.55.55}.101
+          aliases:
+            - openhab-db
+
 
 networks:
   openhab-network:
@@ -42,5 +65,5 @@
     ipam:
       driver: default
       config:
-        - subnet: 172.55.55.0/24
+        - subnet: ${IPV4_NETWORK:-172.55.55}.0/24
 
diff --git a/install.sh b/install.sh
index 92e2000..5286055 100755
--- a/install.sh
+++ b/install.sh
@@ -17,6 +17,14 @@
 	# replace uid and gid in config file
 	sed -i "/^OPENHAB_USER/c\\\OPENHAB_USER_ID=${uid}" openhab.conf
 
+	# db passwords
+	pw1=$(</dev/urandom tr -dc A-Za-z0-9 | head -c 28)
+	pw2=$(</dev/urandom tr -dc A-Za-z0-9 | head -c 28)
+
+	# replace default passwords
+	sed -i "/^OPENHAB_DATABASE_ROOT/c\\\OPENHAB_DATABASE_ROOT=${pw1}" openhab.conf
+	sed -i "/^OPENHAB_DATABASE_PASSWORD/c\\\OPENHAB_DATABASE_PASSWORD=${pw2}" openhab.conf
+
 	# replace architecture dependend
 	if [[ $arc == "x86_64" ]]; then
 		sed -i "/^OPENHAB_ARCH=/c\\\OPENHAB_ARCH=amd64" openhab.conf
diff --git a/openhab.conf.example b/openhab.conf.example
index 16f11e5..5b7ccc0 100644
--- a/openhab.conf.example
+++ b/openhab.conf.example
@@ -18,6 +18,24 @@
 OPENHAB_OSGI_BIND=127.0.0.1
 OPENHAB_OSGI_PORT=5555
 
+# Internal IPv4 /24 subnet, format n.n.n. (expands to n.n.n.0/24)
+IPV4_NETWORK=172.55.55
+
+
+## database configuration
+# root user password
+OPENHAB_DATABASE_ROOT=rootpw
+
+# database for openhab
+OPENHAB_DATABASE_NAME=openhab
+
+# database user
+OPENHAB_DATABASE_USER=openhab
+
+# database password
+OPENHAB_DATABASE_PASSWORD=dbpw
+
+
 # timezone
 TZ=Europe/Berlin