certbot/tests/letstest/README.md
Brad Warren d3b82a4e8e
Fix test farm tests by using a local Pebble instance (#8561)
[As discussed in Mattermost](https://opensource.eff.org/eff-open-source/pl/yhtp4qu4zpfczm5wxmzxhndrto), our Apache test farm tests are failing because the CA certificate in the old version of boulder we have pinned expired over the weekend. This PR fixes that by running a local Pebble instance instead of an external boulder instance.

* switch from external boulder to local pebble

* add --http-01-port to run_acme_server
2020-12-22 10:24:20 -08:00

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# letstest
Simple AWS testfarm scripts for certbot client testing
- Launches EC2 instances with a given list of AMIs for different distros
- Copies certbot repo and puts it on the instances
- Runs certbot tests (bash scripts) on all of these
- Logs execution and success/fail for debugging
## Notes
- Some AWS images, e.g. official CentOS and FreeBSD images
require acceptance of user terms on the AWS marketplace
website. This can't be automated.
- AWS EC2 has a default limit of 20 t2/t1 instances, if more
are needed, they need to be requested via online webform.
## Installation and configuration
These tests require Python 3, awscli, boto3, PyYAML, and fabric 2.0+. If you're
on a Debian based system, make sure you also have the python3-venv package
installed. If you have Python 3 installed, you can use requirements.txt to
create a virtual environment with a known set of dependencies by running:
```
python3 -m venv venv3
. ./venv3/bin/activate
pip install --requirement requirements.txt
```
You can then configure AWS credentials and create a key by running:
```
>aws configure --profile <profile name>
[interactive: enter secrets for IAM role]
>aws ec2 create-key-pair --profile <profile name> --key-name <key name> --query 'KeyMaterial' --output text > whatever/path/you/want.pem
```
Note: whatever you pick for `<key name>` will be shown to other users with AWS access.
When prompted for a default region name, enter: `us-east-1`.
## Usage
To run tests, activate the virtual environment you created above and run:
```
>python multitester.py targets.yaml /path/to/your/key.pem <profile name> scripts/<test to run>
```
You can only run up to two tests at once. The following error is often indicative of there being too many AWS instances running on our account:
```
NameError: name 'instances' is not defined
```
If you see this, you can run the following command to shut down all running instances:
```
aws ec2 terminate-instances --profile <profile name> --instance-ids $(aws ec2 describe-instances --profile <profile name> | grep <key name> | cut -f8)
```
It will take a minute for these instances to shut down and become available again. Running this will invalidate any in progress tests.
A folder named `letest-<timestamp>` is also created with a log file from each instance of the test and a file named "results" containing the output above.
The tests take quite a while to run.
## Scripts
Example scripts are in the 'scripts' directory, these are just bash scripts that have a few parameters passed
to them at runtime via environment variables. test_apache2.sh is a useful reference.
Note that the <pre>test_letsencrypt_auto_*</pre> scripts pull code from PyPI using the letsencrypt-auto script,
__not__ the local python code. test_apache2 runs the dev venv and does local tests.
See:
- https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html
- https://docs.aws.amazon.com/cli/latest/userguide/cli-ec2-keypairs.html
Main repos:
- https://github.com/letsencrypt/letsencrypt