Quiz: metrics and Prometheus

Read the output

How much memory can programs on this machine still get?

$ curl -s localhost:9100/metrics | grep '^node_memory_Mem'
node_memory_MemAvailable_bytes 3.18672896e+08
node_memory_MemFree_bytes 3.4152448e+07
node_memory_MemTotal_bytes 4.80497664e+08

• A About 480 MB — all of the machine's memory.
• B About 320 MB.
• C About 34 MB — that much is free.