shell-local post-provisioner strange behaviour

[fab73]

Hi,

I need to upload my boxes to GDrive, and as first step I'm doing it with a shell-local post-provisioner, so I've written this simple bash script [1], that uses the gdrive [2] utility to do the real work, now it runs fine when invoked directly form the CLI, instead when invoked by packer it starts the upload but it is not able to complete it, I've tried many times to exclude temporary errors, but the results are consistent.

gdrive gave a could of return error, that seems related to a broken connection:

- unexpected EOF

- remote error: bad record MAC

Is there any particular difference running a shell script via shell-local, that could affect the upload? or do you have any other hint?

Thanks,

 Fabio

[1] http://pastebin.com/SiDfB4F1

[2] https://github.com/prasmussen/gdrive

[Rickard von Essen]

Can you run:

gdrive <same args> | less

in a terminal?

Some interactive command line tools won't run properly without a pty. If that is the case you can try

unbuffer gdrive <same args> | less

in a terminal. (unbuffer is part of the `expect` package)

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[fab73]

The script is not interactive, it only produces some text output.

Here [1] there is the packer debug log, and here [2] the same command executed by packer directly on the shell.

I'll try you "unbuffer" suggestion.

thanks

[1]http://pastebin.com/G46MDzNe

[2]http://pastebin.com/sj2gr6V4

On Tuesday, August 30, 2016 at 3:08:17 PM UTC+2, Rickard von Essen wrote:

Can you run:

gdrive <same args> | less

in a terminal?

Some interactive command line tools won't run properly without a pty. If that is the case you can try

unbuffer gdrive <same args> | less

in a terminal. (unbuffer is part of the `expect` package)

On 30 August 2016 at 14:58, fab73 <po...@fab.io> wrote:

Hi,

I need to upload my boxes to GDrive, and as first step I'm doing it with a shell-local post-provisioner, so I've written this simple bash script [1], that uses the gdrive [2] utility to do the real work, now it runs fine when invoked directly form the CLI, instead when invoked by packer it starts the upload but it is not able to complete it, I've tried many times to exclude temporary errors, but the results are consistent.

gdrive gave a could of return error, that seems related to a broken connection:

- unexpected EOF

- remote error: bad record MAC

Is there any particular difference running a shell script via shell-local, that could affect the upload? or do you have any other hint?

Thanks,

 Fabio

[1] http://pastebin.com/SiDfB4F1

[2] https://github.com/prasmussen/gdrive

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[fab73]

Also with unbuffer I got the same error.

[Rickard von Essen]

This works for me:

{

  "builders": [

    {

      "type": "file",

      "content": "Noting to see here! Move along!",

      "target": "dummy_artifact"

    }

  ],

  "post-processors": [

    {

      "type": "shell-local",

      "inline": "gdrive upload dummy_artifact"

    }

  ]

}

Could you run with debug logging:

PACKER_LOG=1 packer build template.json

and gist the log and your template.json?

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[fab73]

I was able to isolate the problem, that is in the Polipo[1] proxy cache server that I am using to speedup packer development.
Disabling the proxy only for the upload solved my problem, now the analysis is on the interaction between polipo and gdrive.

Thanks for the support.

[1]https://www.irif.univ-paris-diderot.fr/~jch//software/polipo/