How to monitor Ethereum private network

Question

i have a private ethereum network running, now i want to monitor this network.. according to the documentation i started geth on one terminal and executed the following command in the other:
geth monitor --attach /path/to/geth.ipc

i get the following error:
Fatal: Metric pattern trie/cachemiss resolved to unexpected type: string

How to solve this?

Answer 1

geth should be started with --metrics.

try the following code:
geth monitor --attach ./chain-data/geth.ipc system/memory/allocs/AvgRate05Min

To know more: https://github.com/ethereum/go-ethereum/wiki/Metrics-and-Monitoring