Composer由于无法读取日志文件而使任务失败，它抱怨编码不正确。
以下是显示在用户界面中的日志：
*** Unable to read remote log from gs://bucket/logs/campaign_exceptions_0_0_1/merge_campaign_exceptions/2019-08-03T10:00:00+00:00/1.log
*** 'ascii' codec can't decode byte 0xc2 in position 6986: ordinal not in range(128)
*** Log file does not exist: /home/airflow/gcs/logs/campaign_exceptions_0_0_1/merge_campaign_exceptions/2019-08-03T10:00:00+00:00/1.log
*** Fetching from: http://airflow-worker-68dc66c9db-x945n:8793/log/campaign_exceptions_0_0_1/merge_campaign_exceptions/2019-08-03T10:00:00+00:00/1.log
*** Failed to fetch log file from worker. HTTPConnectionPool(host='airflow-worker-68dc66c9db-x945n', port=8793): Max retries exceeded with url: /log/campaign_exceptions_0_0_1/merge_campaign_exceptions/2019-08-03T10:00:00+00:00/1.log (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f1c9ff19d10>: Failed to establish a new connection: [Errno -2] Name or service not known',))
我尝试在Google云控制台中查看文件，它还会引发错误：
Failed to load
Tracking Number: 8075820889980640204
但是我可以通过gsutil下载文件。
当我查看文件时，它似乎具有覆盖其他文本的文本。
我无法显示整个文件，但看起来像这样：
--------------------------------------------------------------------------------
Starting attempt 1 of 1
--------------------------------------------------------------------------------
@-@{"task-id": "merge_campaign_exceptions", "execution-date": "2019-08-03T10:00:00+00:00", "workflow": "__campaign_exceptions_0_0_1"}
[2019-08-04 10:01:23,313] {models.py:1569} INFO - Executing <Task(BigQueryOperator): merge_campaign_exceptions> on 2019-08-03T10:00:00+00:00@-@{"task-id": "merge_campaign_exceptions", "execution-date": "2019-08-03T10:00:00+00:00", "workflow": "__campaign_exceptions_0_0_1"}
[2019-08-04 10:01:23,314] {base_task_runner.py:124} INFO - Running: ['bash', '-c', u'airflow run __campaign_exceptions_0_0_1 merge_campaign_exceptions 2019-08-03T10:00:00+00:00 --job_id 22767 --pool _bq_pool --raw -sd DAGS_FOLDER//-campaign-exceptions.py --cfg_path /tmp/tmpyBIVgT']@-@{"task-id": "merge_campaign_exceptions", "execution-date": "2019-08-03T10:00:00+00:00", "workflow": "__campaign_exceptions_0_0_1"}
[2019-08-04 10:01:24,658] {base_task_runner.py:107} INFO - Job 22767: Subtask merge_campaign_exceptions [2019-08-04 10:01:24,658] {settings.py:176} INFO - setting.configure_orm(): Using pool settings. pool_size=5, pool_recycle=1800@-@{"task-id": "merge_campaign_exceptions", "execution-date": "2019-08-03T10:00:00+00:00", "workflow": "__campaign_exceptions_0_0_1"}
@-@{}件似乎在典型记录的“顶部”。
我在GCP Cloud Composer中查看日志时遇到类似的问题。但这似乎并不能阻止失败的DAG任务运行。看起来是GKE与存储日志所在的存储桶之间的权限错误。
您仍然可以通过进入群集的存储桶来查看日志，该存储桶与/ dags文件夹位于同一目录中，在该目录中您还将看到一个logs /文件夹。