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Hi Ramy,
  Cc Wienand,

Thanks to both of you and your suggestions help me solve this problem.
It was really a permission issue:
(debug info)
+sha256sum --check -
+grep: /opt/dib_cache/SHA256SUMS.ubuntu.trusty.amd64: Permission denied

Here grep command run as nodepool, but the file was owned by root user.
So, I ran nodepoold again after deleting this file, this problem was resolved.

However, unfortunately, I encountered another problem, after cleaning up this barrier, which seems like a proxy issue.
Just to be clear, I will finish this topic and open a new email for the new issue([openstack-dev] [CI]How to set proxy for nodepoold).

BTW, this is a pretty good tip for me.
> nodepool image-build <image-name>

Thanks again.

Xiexs

-----Original Message-----
From: Asselin, Ramy [mailto:ramy.asselin at hp.com] 
Sent: Tuesday, August 04, 2015 6:38 AM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] 答复: [CI] No image was created after running "nodepoold -d $DAEMON_ARGS"

Hi Xiexs,

Definitely make sure you run nodepool commands as nodepool and not root:
sudo su - nodepool

Before starting nodepool on a fresh install, I usually manually build the image first as it is easier to debug issues:

sudo su - nodepool
nodepool image-build <image-name> 

Ramy

-----Original Message-----
From: Xie, Xianshan [mailto:xiexs at cn.fujitsu.com] 
Sent: Wednesday, July 29, 2015 10:44 PM
To: OpenStack Development Mailing List (not for usage questions) <openstack-dev at lists.openstack.org>
Subject: [openstack-dev] 答复: [CI] No image was created after running "nodepoold -d $DAEMON_ARGS"

Hi Wienand,
  Thanks for your reply.

>So, nothing after this?
Yes, there is nothing anymore since that line in the nodepool.log.
But, the the polling thread still goes on , according to the log message in the debug.log.

> Nothing jumps out; first thought was to check if disk-image-create is running and go from there.  If it's stuck, pointing strace() at it might give a clue.
The disk-image-create is still running(with ps command).
I don’t know how to debug disk-image-create while it spawned by nodepoold.
(I had tried to add set -x into disk-image-create, but it did not work) Could you give me some tips?

>Something I just thought of that has caused problems is check your users; I think running things by hand as root and then switching back to a unprivileged user can cause problems as the second run hits things it can't modify.
Yes, you are definitely right, I really once met this problem.
But right now, I checked the disk-image-create by hand with user "nodepool" which also used by "nodepoold -d $DAEMON_ARGS". 

Thanks again.

Xiexs



-----邮件原件-----
发件人: Ian Wienand [mailto:iwienand at redhat.com]
发送时间: 2015年7月30日 11:51
收件人: OpenStack Development Mailing List (not for usage questions)
主题: Re: [openstack-dev] [CI] No image was created after running "nodepoold -d $DAEMON_ARGS"

On 07/30/2015 12:34 PM, Xie, Xianshan wrote:
> DEBUG nodepool.NodePool: Finished node launch calculation INFO
> nodepool.DiskImageBuilderThread: Running disk-image-create ...

So, nothing after this?

Nothing jumps out; first thought was to check if disk-image-create is running and go from there.  If it's stuck, pointing strace() at it might give a clue.

Full logs and config help, but my best suggestion is to jump on irc in #openstack-infra; during USA awake hours you'll get the best response.

-i

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