Scalr AWS role build server SSH public key empty

[Cristian Carstea]

Hi,

i try to create a role builder in AWS using latest version of Scalr. It works ok until connecting to aws instance via SSH: 
Scalr unable to establish SSH connection with server on Error: Cannot login to SSH using PublicKey 
If i try to download public key from Scalr ssh keys, file is empty, also in DB field public_key is empty for SCALR-ROLESBUILDER-f605e590 key. 
What can be the issue?

Thank you, 
Cristian

[Rasmus Kristensen]

Hey

I had the same issue which I seem to have fixed by doing the following two actions:

running wget http://localhost/testenvironment.php -O /dev/null once after setup to make sure /var/www/scalr/app/etc/.cryptokey was created

also I had to change the premissions on the /var/www/scalr/app/cache directory so the apache2 user (www-data) could create files in it, as the publickey is generated from the private key with ssh-keygen through a temporary file.

chmod 777 /var/www/scalr/app/cache is the easy way out to check if it is the problem.

I hope this helps and avoid this http://xkcd.com/979/ ;)

[Thomas Orozco]

Hey Rasmus, thanks for contributing your experience with Scalr!

Note that this may also be due to a missing Scalr installation ID (which is also generated by testenvironment.php!).

We now have that documented (although we didn't at the time Cristian asked): https://scalr-wiki.atlassian.net/wiki/x/kQIh

After seeing your comment, I added a note there indicating that this step matters a lot!

Thanks!

Thomas