docs: def create_pool(self):
          """
          Return a ConnectionPool instance of given host
          :param socket_timeout:
              socket timeout for each connection in seconds
          """
  
          service = self.dao.service_name()
  
          ca_certs = self.dao.get_setting("CA_BUNDLE",
                                          "/etc/ssl/certs/ca-bundle.crt")
          cert_file = self.dao.get_service_setting("CERT_FILE", None)
          host = self.dao.get_service_setting("HOST")
          key_file = self.dao.get_service_setting("KEY_FILE", None)
          max_pool_size = int(self.dao.get_service_setting("POOL_SIZE", 10))
          socket_timeout = int(self.dao.get_service_setting("TIMEOUT", 2))
          verify_https = self.dao.get_service_setting("VERIFY_HTTPS")
  
          if verify_https is None:
              verify_https = True
  
          kwargs = {
              "retries": Retry(total=1, connect=0, read=0, redirect=1),
              "timeout": socket_timeout,
              "maxsize": max_pool_size,
              "block": True,
          }
  
          if key_file is not None and cert_file is not None:
              kwargs["key_file"] = key_file
              kwargs["cert_file"] = cert_file
  
          if urlparse(host).scheme == "https":
              kwargs["ssl_version"] = self.dao.get_service_setting(
                  "SSL_VERSION", ssl.PROTOCOL_TLSv1)
              if verify_https:
                  kwargs["cert_reqs"] = "CERT_REQUIRED"
                  kwargs["ca_certs"] = ca_certs
  
          return connection_from_url(host, **kwargs)