Thanks Rickard.. It seems I was obviously making that one a lot more difficult that it was by sending in values that were blank strings vs null.
On Fri, Oct 19, 2018 at 4:02 PM Rickard von Essen < [email protected]> wrote: > Setting a value to null in a vars file have no effect. If you want to > force it to specified on the command line, don't include it. Setting it to > an empty string will pass that (valid) value. > > On Fri, Oct 19, 2018 at 9:20 PM Justin Metz <[email protected]> wrote: > >> Hi All, >> >> I have been using Packer for quite some time now and the way variables >> are evaluated\validated at runtime has always been a point of confusion. I >> have tried many different combinations of assigning a blank string "" value >> and a null value, but I can't seem to get the native validation to fail if >> a variable is of those values at runtime. I pass in a variables.json file >> with matching properties and set those to "" and null as well, with the >> same result. I've even passed in just a subset of the variables that exist >> in the target template and I don't get anything. At this point in time, >> I'm using V1.3.1 but I had the same results with previous versions. >> My main goal is to have packer validate that the variable is empty and >> fail vs it just going through with a blank value and things not working out >> as expected.. >> >> The documentation for packer validate shows this, which leads me to >> believe that if I force a value to null it will trigger an errror: >> "If the default value is null, then the user variable will be *required*. >> This means that the user must specify a value for this variable or template >> validation will fail." >> >> Here is an example of one of the things I've tried. Please let me know >> what I'm doing wrong, it's driving me a bit nutty. :) >> >> --- variables.json content being passed in as a file (some values left >> blank on purpose and one property is left out. A mix of empty strings and >> nulls)--- >> >> { >> "aws_access_key":"11111111111", >> "aws_secret_key":"111111111", >> "ssh_keypair_name":"", >> "ssh_private_key_file":null, >> "destination_ami_name": "" >> } >> >> >> >> --- variables in packer.json template (A mix of empty strings and nulls) >> --- >> >> "variables": >> { >> "aws_access_key":"", >> "aws_secret_key":"", >> "ssh_keypair_name":null, >> "ssh_private_key_file":"", >> "destination_ami_name": "", >> "source_ami_name": null >> }, >> >> >> Any advice would be greatly appreciated... >> >> J >> >> -- >> This mailing list is governed under the HashiCorp Community Guidelines - >> https://www.hashicorp.com/community-guidelines.html. Behavior in >> violation of those guidelines may result in your removal from this mailing >> list. >> >> GitHub Issues: https://github.com/mitchellh/packer/issues >> IRC: #packer-tool on Freenode >> --- >> You received this message because you are subscribed to the Google Groups >> "Packer" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/packer-tool/9398630c-7c60-4a14-844f-fc900473a4e8%40googlegroups.com >> <https://groups.google.com/d/msgid/packer-tool/9398630c-7c60-4a14-844f-fc900473a4e8%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > -- > This mailing list is governed under the HashiCorp Community Guidelines - > https://www.hashicorp.com/community-guidelines.html. Behavior in > violation of those guidelines may result in your removal from this mailing > list. > > GitHub Issues: https://github.com/mitchellh/packer/issues > IRC: #packer-tool on Freenode > --- > You received this message because you are subscribed to the Google Groups > "Packer" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/packer-tool/CALz9Rt8vbvXnSQSGvO9PZ75o2AKjhf8XrZAzx8wq3uozOLAevA%40mail.gmail.com > <https://groups.google.com/d/msgid/packer-tool/CALz9Rt8vbvXnSQSGvO9PZ75o2AKjhf8XrZAzx8wq3uozOLAevA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- This mailing list is governed under the HashiCorp Community Guidelines - https://www.hashicorp.com/community-guidelines.html. Behavior in violation of those guidelines may result in your removal from this mailing list. GitHub Issues: https://github.com/mitchellh/packer/issues IRC: #packer-tool on Freenode --- You received this message because you are subscribed to the Google Groups "Packer" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/packer-tool/CAD7vpzuzW88ta0E3zdxSNVXq7U%2Bt4pWd8gHN_UtVBuSZxLtSVA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
