I worked at a customer last year, on a short term assignment. A brilliant engineer had built their infrastructure, automated deployments, and managed all the systems. Sadly despite all the sleepless nights, and dedication, they hadn’t managed to build up good report with management.
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I’ve seen this happen so many times, and I do find it a bit sad. Here’s an engineer who’s working his butt off, really wants the company to succeed. Really cares about the systems. But doesn’t connect well with people, often is dismissive, disrespectful or talks down to people like they’re stupid. All burns bridges, and there’s a lot of bad feelings between all parties.
How to manage the exit process. Here’s a battery of recommendations for changing credentials & logins so that systems can’t be accessed anymore.
1. Lock out API access
You can do this by removing the administrator role or any other role their IAM user might have. That way you keep the account around *just in case*. This will also prevent them from doing anything on the console, but you can see if they attempt any logins.
2. Lock out of servers
They may have the private keys for various serves in your environment. So to lock them out, scan through all the security groups, and make sure their whitelisted IPs are gone.
Are you using a bastion box for access? That’s ideal because then you only have one accesspoint. Eliminate their login and audit access there. Then you’ve covered your bases.
Related: Does Amazon eat it’s own dogfood?
3. Update deployment keys
At one of my customers the outgoing op had setup many moving parts & automated & orchestrated all the deployment processes beautifully. However he also used his personal github key inside jenkins. So when it went to deploy, it used those credentials to get the code from github. Oops.
We ended up creating a company github account, then updating jenkins with those credentials. There were of course other places in the capistrano bits that also needed to be reviewed.
4. Dashboard logins
Monitoring with NewRelic or Nagios? Perhaps you have a centralized dashboard for your internal apps? Or you’re using Slack?
5. Non-key based logins
Have some servers outside of AWS in a traditional datacenter? Or even servers in AWS that are using usernames & passwords? Be sure to audit the full list of systems, and change passwords or disable accounts for the outgoing sysop.
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