常见网络问题

控制台显示打开备份库失败

通过诊断工具检测，出现如下问题：

This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server.

客户端日志中出现如下相关描述：

This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server.

对应域名的DNS解析失败。可能原因如下：

无法连接DNS服务器或超时

DNS服务器配置有误

防火墙或网络规则限制

具体排查方法，请参见DNS解析失败排查方法。