code: def check_connection(self):
      try:
          db = mysql.connector.connect(
              user="root",
              password="0xdata",
              host="172.16.2.178",
              database="h2o",
          )
          cursor = db.cursor()
          cursor.execute("SELECT VERSION()")
          results = cursor.fetchone()
          # Check if anything at all is returned
          if results:
              print(
                  "\n*****Connection is Healthy to Accuracy Test Database.*****\n"
              )
          else:
              return "\n*****Connection might not be healthy. Nothing returned from query.*****\n"
      except mysql.connector.Error as err:
          print("Something went wrong: {}".format(err))
  
file_path: h2o-3/scripts/db_check.py
imports: import mysql.connector
label_desc: Use image node_id 2 for calling the CheckDB obj's underlying member method code with example usage: obj.check_connection() and returns: str