wal-e 备份推送错误在 Azure 上

Question

>我在执行备份推送命令时收到以下错误：

# envdir /etc/wal-e.d/env wal-e backup-push /var/lib/postgresql/9.5/main
 wal_e.main   INFO     MSG: starting WAL-E
    DETAIL: The subcommand is "backup-push".
    STRUCTURED: time=2017-06-14T21:33:56.131389-00 pid=17559
 wal_e.main   CRITICAL MSG: An unprocessed exception has avoided all error handling
    DETAIL: Traceback (most recent call last):
      File "/usr/local/lib/python3.5/dist-packages/wal_e/blobstore/wabs/wabs_util.py", line 27, in <module>
        from azure.storage.blob import BlobService
    ImportError: cannot import name 'BlobService'
    During handling of the above exception, another exception occurred:
    Traceback (most recent call last):
      File "/usr/local/lib/python3.5/dist-packages/wal_e/cmd.py", line 589, in main
        backup_cxt = configure_backup_cxt(args)
      File "/usr/local/lib/python3.5/dist-packages/wal_e/cmd.py", line 504, in configure_backup_cxt
        from wal_e.blobstore import wabs
      File "/usr/local/lib/python3.5/dist-packages/wal_e/blobstore/wabs/__init__.py", line 11, in <module>
        from wal_e.blobstore.wabs.wabs_util import do_lzop_get
      File "/usr/local/lib/python3.5/dist-packages/wal_e/blobstore/wabs/wabs_util.py", line 29, in <module>
        from azure.storage import BlobService
    ImportError: cannot import name 'BlobService'
    STRUCTURED: time=2017-06-14T21:33:56.356868-00 pid=17559

我已经尝试了更新的Python和Azure

瓦尔-e版本：1.0.3SO： Ubuntu Server 16.4.1 LTS

知道吗？

Answer 1

我尝试成功重现您的问题，并查看了wal-e版本的源代码1.0.3，然后我发现问题是由wal-e版本引起的1.0.3实际上需要不到0.20.3 azure-storage版本，但是在通过pip3 install wal-e[azure]安装时0.34.3安装了最新的azure-storage版本。请通过pip3 freeze | grep azure-storage检查您当前的azure-storage版本。

因此，有两种解决方案可以解决此问题，如下所示。

1. 通过 pip3 install azure-storage==0.20.3 将azure-storage版本降级为 0.20.3 版本。
2. 或者只是通过pip3 install wal-e==1.1.0b1将wal-e版本升级到需要最新azure-storage版本并与旧版本兼容的1.1.0b1。

希望对您有所帮助。