nice + iowait + irq + softirq + steal + guest + guestnice
container_cpu_system_seconds_total container_cpu_usage_seconds_total container_cpu_user_seconds_total
Usually when I have to think about this, I have 2 questions:
Memory can be thought of in several tiers:
Important to note, there's virtual memory, which is free ~~infinite~~ space that can be used, backed by physical memory, the kind you have to buy.