Change readiness to use real mysql connection

Change-Id: I5add651e9bfcd36114c428ddc6d8da5a90706334

service/files/defaults.yaml

@@ -4,6 +4,7 @@ configs:
   db:
     max_timeout: 60
     root_password: password
+    readiness_password: password
   mariadb:
     port:
       cont: 3306

service/files/mariadb-bootstrap.sh.j2

@@ -18,12 +18,15 @@ function bootstrap_db {
     echo "Running mysql grant privileges commands"
     mysql -u root --password="${DB_ROOT_PASSWORD}" -e "GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY '${DB_ROOT_PASSWORD}' WITH GRANT OPTION;"
     mysql -u root --password="${DB_ROOT_PASSWORD}" -e "GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '${DB_ROOT_PASSWORD}' WITH GRANT OPTION;"
+    echo "Add readiness user"
+    mysql -u root --password="${DB_ROOT_PASSWORD}" -e "CREATE USER 'readiness'@'%' IDENTIFIED BY '${DB_READINESS_PASSWORD}';"
     echo "Shuting down mariadb"
     mysqladmin -uroot -p"${DB_ROOT_PASSWORD}" shutdown
     wait $(jobs -p)
 }
 
 DB_ROOT_PASSWORD="{{ db.root_password }}"
+DB_READINESS_PASSWORD="{{ db.readiness_password }}"
 DB_MAX_TIMEOUT="{{ db.max_timeout }}"
 
 # Only update permissions if permissions need to be updated

service/files/readiness.sh.j2

@@ -1,3 +1,7 @@
 #!/bin/bash -e
 
-test -f /tmp/mariadb_ok && nc -z {{ network_topology["private"]["address"] }} {{ mariadb.port.cont }}
+test -f /tmp/mariadb_ok && echo "status" | mysql --connect-timeout=4 \
+    -h {{ network_topology["private"]["address"] }} \
+    -P {{ mariadb.port.cont }} \
+    -u readiness \
+    -p{{ db.readiness_password }}