... rpi kubernetes cluster for a few hundred bucks. You can run hadoop or spark or hbase or mesos on a cloud provider. Learn ansible, prometheus, go, python or loads of other things in your browser. You can show off your skills outside your job on github or bitbucket
100% buzzword compliant. You list products that are 2 years old.
Which brings up the old joke about HR looking for someone with 10 years experience in X which has only been out for 5 years.
Yes, you can PLAY with all of those for very little money but you won't KNOW all of those. You will be a dilettante. And swapping out existing tools for whatever was released 2 years ago is a recipe for disaster.
No, there is nothing about you or your skills that is so unique that you cannot be replaced.
And if your severance package depends upon you teaching your replacement how to do your job (see Disney), you are even easier to replace.
I have skills that are useful and hard to find.
They may be useful, but they are not hard to find.
And yeah, I get that sucks. But the solution is to learn more skills so you can get the first type of job.
Unless you personally are working for Google or Facebook that kind of invalidates your position. You aren't so rare that Google is fighting to get you.
Look up "confirmation bias". You think that because your decisions have resulted in your position that anyone who has not achieved that position has made incorrect decisions. The reality is that when a company wants to cut their IT costs to save money, your skills will have nothing to do with their decision.
Torque is cheap.