how to make salt-minion generate new keys

Question

I am playing around with salt and what my problem is launching instance from Amazon EC2 AMI results minion keys being the same. How do I refresh individual minion to get it's new identity (key)?

Answer 1

1. Stop the minion service.

   service salt-minion stop
   

2. Delete old identity

   rm /etc/salt/pki/minion/minion.pem
   rm /etc/salt/pki/minion/minion.pub
   cat /dev/null > /etc/salt/minion_id
   

3. Make sure salt will begin on startup

   chkconfig salt-minion on
   

4. Create your a new AMI

Answer 2

Give the following command a try:

sudo salt 'name_of_host_whose_keys_you_wish_to_regenerate' saltutil.regen_keys

Source: https://docs.saltstack.com/en/latest/ref/modules/all/salt.modules.saltutil.html#salt.modules.saltutil.regen_keys

Answer 3

Based on user325017's answer.

I adapted this for Ubuntu Bionic Beaver 18.04, since it has systemd:

#!/usr/bin/env bash

systemctl stop salt-minion
rm /etc/salt/pki/minion/minion.pem
rm /etc/salt/pki/minion/minion.pub
cat /dev/null > /etc/salt/minion_id
systemctl enable salt-minion
systemctl start salt-minion

Answer 4

On Debian 10 and possibly others, the files have changed location. Do this:

# Stop the service.
service salt-minion stop

# Delete key files.
rm /var/lib/salt/pki/minion/minion.pub
rm /var/lib/salt/pki/minion/minion.pem

# Edit minion_id to the desired name you want to appear in saltstack.
# Or you can rm this file and the minion will create it containing the hostname. 
vi /etc/salt/minion_id

# Start the service.
service salt-minion start

Answer 5

Following @user325017 answer for Windows, tweak step 2 with:

Remove C:\salt\conf\pki\minion\minion.pem Remove C:\salt\conf\pki\minion\minion.pub Edit c:\salt\conf\minion, and update the line with "id:"