docker - Layer already being pulled by another client. Waiting.什么原因

Question

docker pull 总是不成功出现上述错误
然后就卡住了

Answer 1

This is a bug in version 1.8 and will be fixed in version 1.9.
http://stackoverflow.com/a/33130453

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You can also try to turn off all docker-machine and restart the machine.