Saturday, February 29, 2020

Automated Renewal of LetsEncrypt Cert on Cisco IOS with Route53


Installed the AWS CLI
apt-get install python3-pip
Ubunutu 16.x needs this as there is a bug in the package above
pip3 install awscli --upgrade 
I used this script as the base for the AWS Route 53 Zone update and Certificate request

https://github.com/jed/certbot-route53

Create a public key for the "automation" user:

root@control:/usr/local/scripts# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): /usr/local/scripts/cisco-automation.key
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /usr/local/scripts/cisco-automation.key.
Your public key has been saved in /usr/local/scripts/cisco-automation.key.pub.
The key fingerprint is:
The key's randomart image is:
Add the public key to the router:
ip ssh pubkey-chain
username automation
key-string
(paste in your pub key max 254 characters per line, so you will need to split it)
exit
exit
exit
exit
wr
copy the keys into the id_rsa and ird_rsa.pub file of the user that will run the script
cat cisco-automation.key > /root/.ssh/id_rsacat cisco-automation.key.pub > /root/.ssh/id_rsa.pub 









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