I've already fully synced the blockchain with btcd, can I point bitcoind at the same
datadir and use its contents?
You can't use the same
datadir, but you can tell
btcd to connect to your locally-running
bitcoind instance in order to do the initial blockchain sync. This means that you'll end up with two copies of the blockchain (one for
bitcoind and one for
btcd) but the sync will happen much faster than starting
btcd with default settings.
; only connect to locally-running node connect=127.0.0.1 ; no need to query for other nodes nodnsseed=1 ; listen on a port other than the default (if bitcoind is already running on the default) listen=127.0.0.1:8336 ; secure the RPC API so that you can interface with your sycing node by using btcctl rpcuser=<rpcusername> rpcpassword=<rpcuserpassword> ; sync with indexes enabled txindex=1 addrindex=1
btcd. It should start, but no peers will be connected - you can verify this by running
btcctl getpeerinfo and you'll get
btcd running, force your
bitcoind node to connect to it by using the command
bitcoin-cli --rpcuser=<bitcoindrpcusername> --rpcpassword=<bitcoindrpcuserpassword> addnode 127.0.0.1:8336 'onetry'
btcctl getpeerinfo again, and you should see that your local
bitcoind node is connected.
btcd has started to sync and it should only take a few hours to sync from the local node. This is much faster than the days it would take to sync over the internet.