dd agent redis failure

gistfile1.txt

    redisdb (4.3.2)
    ---------------
      Instance ID: redisdb:244ce781d445ea0d [ERROR]
      Configuration Source: file:/etc/datadog-agent/conf.d/redisdb.d/conf.yaml
      Total Runs: 1
      Metric Samples: Last Run: 0, Total: 0
      Events: Last Run: 0, Total: 0
      Service Checks: Last Run: 1, Total: 1
      Average Execution Time : 23ms
      Last Execution Date : 2022-03-22 17:55:00 UTC (1647971700000)
      Last Successful Execution Date : Never
      Error: Error 111 connecting to localhost:1234. Connection refused.
      Traceback (most recent call last):
        File "/opt/datadog-agent/embedded/lib/python3.8/site-packages/redis/connection.py", line 567, in connect
          sock = self._connect()
        File "/opt/datadog-agent/embedded/lib/python3.8/site-packages/redis/connection.py", line 625, in _connect
          raise err
        File "/opt/datadog-agent/embedded/lib/python3.8/site-packages/redis/connection.py", line 613, in _connect
          sock.connect(socket_address)
      ConnectionRefusedError: [Errno 111] Connection refused
      
      During handling of the above exception, another exception occurred:
      
      Traceback (most recent call last):
        File "/opt/datadog-agent/embedded/lib/python3.8/site-packages/datadog_checks/base/checks/base.py", line 1033, in run
          self.check(instance)
        File "/opt/datadog-agent/embedded/lib/python3.8/site-packages/datadog_checks/redisdb/redisdb.py", line 552, in check
          self._check_db()
        File "/opt/datadog-agent/embedded/lib/python3.8/site-packages/datadog_checks/redisdb/redisdb.py", line 203, in _check_db
          info = conn.info()
        File "/opt/datadog-agent/embedded/lib/python3.8/site-packages/redis/commands/core.py", line 626, in info
          return self.execute_command('INFO')
        File "/opt/datadog-agent/embedded/lib/python3.8/site-packages/redis/client.py", line 1068, in execute_command
          conn = self.connection or pool.get_connection(command_name, **options)
        File "/opt/datadog-agent/embedded/lib/python3.8/site-packages/redis/connection.py", line 1173, in get_connection
          connection.connect()
        File "/opt/datadog-agent/embedded/lib/python3.8/site-packages/redis/connection.py", line 571, in connect
          raise ConnectionError(self._error_message(e))
      redis.exceptions.ConnectionError: Error 111 connecting to localhost:1234. Connection refused.