That's a great question you used in interviews! I'm curious – how would you personally approach this situation? What would your solution be for running a command on 10 servers, and how would you scale it to thousands?
For a handful of servers I would just do a for loop like `for i in {01..10};do echo "command" | ssh -T server$i.example.com;done` because it was quick and dirty and worked fine for something quick, but obviously it doesn't really ensure a common state or handle errors at all (but I still used a for loop like that many times a day for quick stuff like "I wonder what size a specific file is on each server" or "let me quickly grep a config file across a range of servers because I forget which one this thing is running on").
For more than that, I used Puppet at the time (this was a decade and a half ago); I was a contributor to Puppet and standardized on it in my company. Eventually we moved to Ansible and I sold that business but last I heard, they are still using Ansible and likely using playbooks that were ported over from my Puppet stuff
jasongill|9 months ago
For more than that, I used Puppet at the time (this was a decade and a half ago); I was a contributor to Puppet and standardized on it in my company. Eventually we moved to Ansible and I sold that business but last I heard, they are still using Ansible and likely using playbooks that were ported over from my Puppet stuff
farka01|9 months ago