certbot-bigip

Requirements

see certbot rquirements: https://certbot.eff.org/docs/install.html#system-requirements

• F5
  • The LetsEncrypt Chain needs to be at /Common/chain_Letsencrypt and in every other partition that uses this plugin. ( f.e.: /Partition/chain_Letsencrypt) At the moment, the plugin checks if a corresponding certificate/chain is located in the same partition/folder as the clientssl profile that uses it.
  • clientssl profile needs to be attached to the virtual server manually(DOMAIN_clientssl). At the moment, the plugin only updates the client profile but does not attach it to the virtual server.

Install

Supported Features

• verifies the domain via HTTP01 (challenge verification implemented through an iRule)
• Partitions and iApps
• Standalone and HA setups (Active/Standby, Active/Active)
• Creates the clientssl profile and attaches the certificate, key and chain
  • Does not modify the clientssl profile if it already exists
• Supports APM enabled virtual servers

Usage

Parameters:
  --certbot-bigip:bigip-list                CSV list of BIG-IP system  hostnames or addresses, all have to be in the same cluster
  --certbot-bigip:bigip-username            BIG-IP username (common to all listed BIG-IP systems)
  --certbot-bigip:bigip-password            BIG-IP password (common to all listed BIG-IP systems)
  --certbot-bigip:bigip-partition           BIG-IP partition (common to all listed BIG-IP systems)
  --certbot-bigip:bigip-clientssl-parent    Client SSL parent profile to inherit default values from
  --certbot-bigip:bigip-vs-list             CSV list of BIG-IP virtual server names, optionally including partition
  --certbot-bigip:bigip-device-group        Device Group to syncronise configuration
  --certbot-bigip:bigip-iapp                BIG-IP iApp (common to all listed BIG-IP systems)
  --certbot-bigip:bigip-apm                 Is the VS APM enabled or not

Example:

certbot --non-interactive --expand --email '[email protected]' --agree-tos \
  -a certbot-bigip:bigip -i certbot-bigip:bigip \
  -d 'example.com' \
  --certbot-bigip:bigip-list 'example-f5.local,example-f5-ha.local' \
  --certbot-bigip:bigip-username 'user' \
  --certbot-bigip:bigip-password 'secret' \
  --certbot-bigip:bigip-partition 'internal' \
  --certbot-bigip:bigip-clientssl-parent '/Common/parent_clientssl' \
  --certbot-bigip:bigip-vs-list '/internal/example.com.app/example.com_vs' \
  --certbot-bigip:bigip-device-group 'fail-sync' \
  --certbot-bigip:bigip-iapp '/internal/example.com.app/example.com'

This plugin currently does not support the certbot renew function, it will only do the challenge and renew the certificate but it will not uploade the certificate to the F5 as the renew does not call the deploy function. To overcome this you can use it like this:

certbot certonly --non-interactive --expand --email '[email protected]' --agree-tos \
  -a certbot-bigip:bigip -i certbot-bigip:bigip \
  -d 'example.com' \
  --certbot-bigip:bigip-list 'example-f5.local,example-f5-ha.local' \
  --certbot-bigip:bigip-username 'user' \
  --certbot-bigip:bigip-password 'secret' \
  --certbot-bigip:bigip-partition 'internal' \
  --certbot-bigip:bigip-clientssl-parent '/Common/parent_clientssl' \
  --certbot-bigip:bigip-vs-list '/internal/example.com.app/example.com_vs' \
  --certbot-bigip:bigip-device-group 'fail-sync' \
  --certbot-bigip:bigip-iapp '/internal/example.com.app/example.com_vs'

if ! /usr/local/bin/cert-test.sh --quiet example.com
then
  echo $(date)
  echo "installing example.com"
  certbot --non-interactive --expand --email '[email protected]' --agree-tos \
    -a certbot-bigip:bigip -i certbot-bigip:bigip \
    -d 'example.com' \
    --certbot-bigip:bigip-list 'example-f5.local,example-f5-ha.local' \
    --certbot-bigip:bigip-username 'user' \
    --certbot-bigip:bigip-password 'secret' \
    --certbot-bigip:bigip-partition 'internal' \
    --certbot-bigip:bigip-clientssl-parent '/Common/parent_clientssl' \
    --certbot-bigip:bigip-vs-list '/internal/example.com.app/example.com_vs' \
    --certbot-bigip:bigip-device-group 'fail-sync' \
    --certbot-bigip:bigip-iapp '/internal/example.com.app/example.com_vs'
else
  echo $(date)
  echo "not installing example.com"
fi

The first call only validates and renews the certificate through certonly and the cert-test.sh compares the local certificate to the certificate delivered by the F5. If these don't match the second certbot call will skip the validation (as the certificate got already renewed) and install the certificate onto the F5.

Testing

⚠️ Currently only integration tests are supported. Therefore a bigip is needed. to run integrations tests with other plugins for example the bluecat plugin you also need a bluecat in place.

Prerequisites

1. Connection to the bigip under test from the machine running the tests
2. clientssl profile needs to be attached to the virtual server manually(DOMAIN_clientssl). At the moment, the plugin only updates the client profile but does not attach it to the virtual server.
3. Configure the tests using the following environment variables:

ENV	default	Example
BIGIP_EMAIL		[email protected]
BIGIP_USERNAME		user
BIGIP_PASSWORD		secret
BIGIP_LIST		example-f5.local,example-f5-ha.local
BIGIP_PARTITION		internal
BIGIP_CLIENTSSL_PARENT		/Common/parent_clientssl
BIGIP_VS_LIST		/internal/example.com.app/example.com_vs
BIGIP_DEVICE_GROUP	fail-sync	fail-sync
BIGIP_IAPP		/internal/example.com.app/example.com
BIGIP_CUSTOM_PARTITION	Common	Common
BIGIP_CUSTOM_VS_LIST		/Common/example.com.app/example1.com_vs, /Common/example.com.app/example2.com_vs

running the tests

python setup.py test

Contributing

If you find errors please open a new issue.

Open a pull request if you have made changes you want to add. we will take a look at it and try our best to merge it. Your help is very welcomed.