made ip of db host dynamic.

roles/keystone/scripts/initialize_db.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 # Start a mariadb container to use its mysql client to initialize the keystone database.
-docker run -i mariadb:10.1.22 mysql -uroot -pgeheim --host 172.23.38.125 << EOF
+docker run -i mariadb:10.1.22 mysql -uroot -pgeheim --host "$1" << EOF
 CREATE DATABASE IF NOT EXISTS keystone;
 GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'localhost' IDENTIFIED BY 'keystone';
 GRANT ALL PRIVILEGES ON keystone.* TO 'keystone'@'%' IDENTIFIED BY 'keystone';

roles/keystone/tasks/main.yml

@@ -38,7 +38,7 @@
     state: started
 
 - name: Initialize db
-  script: scripts/initialize_db.sh
+  script: scripts/initialize_db.sh {{ hostvars[groups['databases'][0]]['ansible_default_ipv4']['address'] }}
 
 - name: keystone manage commands to setup db
   command: >