FAQ - beholder0x2a/go-ethereum GitHub Wiki

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Q. I noticed my peercount slowly decrease, and now it is at 0. Restarting doesn't get any peers.

A. Check and sync your clock with ntp. Example sudo ntpdate -s time.nist.gov

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Q. I would like to run multiple geth instances but got the error "Fatal: blockchain db err: resource temporarily unavailable".

A. Geth uses a datadir to store the blockchain, accounts and some additional information. This directory cannot be shared between running instances. If you would like to run multiple instances follow these instructions.