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[Openstack] [diskimage-builder] Element pip-and-virtualenv failed to install pip


On 09/07/2018 03:46 PM, Hang Yang wrote:
> Hi there,
> 
> I'm new to the DIB tool and ran into an issue when used 2.16.0 DIB tool 
> to build a CentOS based image with pip-and-virtualenv element. It failed 
> at 
> https://github.com/openstack/diskimage-builder/blob/master/diskimage_builder/elements/pip-and-virtualenv/install.d/pip-and-virtualenv-source-install/04-install-pip#L78 
> due to cannot find pip command.
> 
> I found the /tmp/get_pip.py was there but totally empty. I have to 
> manually add a wget step to retreat the get_pip.py right before the 
> failed step then it worked. But should the get_pip.py be downloaded 
> automatically by this 
> https://github.com/openstack/diskimage-builder/blob/master/diskimage_builder/elements/pip-and-virtualenv/source-repository-pip-and-virtualenv 
> ? Does anyone know how could this issue happen? Thanks in advance for 
> any help.

Hi Hang,

Are you using a package or a source-based installation for your dib? The 
reason I ask is because from the docs it seems that the installation 
procedure for pip is quite different depending on whether you're using a 
package or source-based install.

Best,
-jay