Jupyter on EC2: SSL Error

Question

I\'m trying to serve a Jupyter notebook from EC2 but I\'m getting an SSL error. I\'m using this AMI: TensorFlow GPU - @nottombrown (ami-8ed4d0e4). I used a self

Answer 1

This error means that the SSL certificate can't be found.

If you haven't yet created an SSL certificate:

Create one by typing the following into the command line (starting at your home directory):

$ mkdir certs
$ cd certs
$ sudo openssl req -x509 -nodes -days 365 -newkey rsa:1024 -keyout mycert.pem -out mycert.pem

(from these instructions)

Now that you have an SSL certificate:

You need to tell Jupyter where to find it.

Take a look at jupyter_notebook_config.py if you have one (or generate one using jupyter notebook --generate-config).

Make sure that you have the following line:

c.NotebookApp.certfile = u'/home/ubuntu/certs/mycert.pem' #location of your certificate file

(see the Jupyter Notebook docs)

and make sure that your self-signed SSL certificate is actually at that location. A common mistake is to mix up certs with .certs for example. A mistake like this will result in Jupyter not being able to find your SSL certificate and that'll result in the error that you're getting.

Answer 2

I had a the same error while running jupyter notebook as a public server with a self-signed cert under Unbuntu 14.4. In my case, the problem was due to an error in the jupyter_notebook_config.py file. I had incorrectly set c.NotebookApp.client_ca = u'/../mycert.pem'. Commenting this line out solved the problem.

Answer 3

Try to add https:// to force web browser to use HTTPS-connection.

I got:

[W 08:25:56.148 NotebookApp] SSL Error on 9 ('<jupyter-server-ip>', 62862): [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:590)

because Chrome tried to use HTTP connection. When using

https://<jupyter-server-ip> 

it finally works :)

Answer 4

This error comes because to two reasons:

1. Certificate Issue

$ mkdir certs
$ cd certs
$ sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout mycert.pem -out mycert.pem

2. Wrong http(s) call.

   • https://ec2-ip:8888 | use https

   • To get ec2-ip curl http://checkip.amazonaws.com

Answer 5

I found out that the permission issue is occurring because the mycert.pem file has only root permissions

drwxrwxr-x 2 ubuntu ubuntu 4096 Mar 20 12:22 .
drwxr-xr-x 9 ubuntu ubuntu 4096 Mar 20 12:09 ..
-rw------- 1 root   root   2949 Mar 20 12:22 mycert.pem

I could not run jupyter notebook as root therefore i chowned the permissions

sudo chown ubuntu:ubuntu mycert.pem

this solved the issue