Curl Certificate Error when Using RVM to install Ruby 1.9.2

In case any one else comes across this while trying to update to 1.9.3 (although version probably doesn't matter), check the version of rvm that you have. Wayne seems to have moved from rvm.beginrescueend.com to rvm.io. The old site's security certificate has expired, so curl's response is correct.

Updating rvm from the new site fixed this problem and allowed me to move forward.

$ \curl -L https://get.rvm.io | bash -s stable --rails --autolibs=enabled

Update: As @rodgerdpack mentioned, the command changes and I've updated the above. In general, see https://rvm.io/ for the latest.

If do not want to change the script AND you do not want to add a cert "for ever" to the cert bundle. There is a very nice and quick solution:

#to download the cert
wget http://curl.haxx.se/ca/cacert.pem
#to let curl use it for the next calls
export CURL_CA_BUNDLE=~/cacert.pem

Then run your script. To reset the environment variable (for subsequent script calls that should not use this cert) re-login to your system or unset the environment variable:

export CURL_CA_BUNDLE=

Curl is invoked in .rvm/scripts/fetch, which by default will be in your home directory.

Edit this using your favourite text editor: for example,

 nano ~/.rvm/scripts/fetch

In lines 56 and 58 (may vary with other versions of RVM, of course) you'll see two lines which begin

 fetch_command="curl ...

Simply add -k after curl, save and try again.

You need to download the ca certificate from http://curl.haxx.se/ca/cacert.pem and add them to your curl-ca-bundle-new.crt file.

To find the location of this file use:

   $ curl-config --ca

   /usr/share/curl/curl-ca-bundle.crt

Backup your curl-ca-bundle.crt file:

$ cp /usr/share/curl/curl-ca-bundle.crt /usr/share/curl/curl-ca-bundle.crt.old

Then you want to concatenate the two file using:

$ cat cacert.pem /usr/share/curl/curl-ca-bundle.crt >> curl-ca-bundle-new.crt

Perhaps all these complicated solutions were once necessary, but now all you need to do is first upgrade RVM and your problem will be solved:

$ rvm get stable
$ rvm reload
$ rvm install ruby-1.9.3-p194