红帽全球峰会1.3. 故障排除
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如果更新过程的时间比预期的要长，则可能会超时，并显示 error:
socket 已经关闭。这可能是因为将 undercloud 的身份验证令牌设置为在设定持续时间后过期。如需更多信息，请参阅推荐大型部署。
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