Fetch error: "unable to calculate the md5 sum of the remote file"

[Kevin Lasenby]

When trying to fetch a file from a Synology NAS to my Ansible server (Ubuntu, using SSH keys) I get the error "unable to calculate the md5 sum of the remote file".

I don't get this error fetching from any other server and can't find any information on what's causing it.  Any ideas?

Kevin

[Toshio Kuratomi]

In ansible 1.7.x and below, ansible looked for a program on the remote
machine to do an md5sum of the file for integrity checking. As of
1.8.0, ansible uses python itself to create a sha1 hash for integrity
checking. What this means is that on ansible-1.7.x and older you
needed to have /usr/bin/md5sum, /usr/bin/md5, or another of a few
known programs in order to use many file related modules. With
current ansible you'll only need python installed.

-Toshio

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[Kevin Lasenby]

Thanks for the reply.  Looks like md5sum/md5 isn't available for Synology, at least I know why its failing and can work around the issue.

Kevin