How to run a partial node connected to full node?

coinpr0n

hero member

Activity: 910

Merit: 1000

Full node bitcoin.conf example:

Code:

...
rpcuser=Ulysseys
rpcpassword=random_authvalue_DO_NOT_USE_THIS_STRING_OR_YOU_WILL_GET_ROBBED
rpcallowip=192.168.1.0/255.255.255.0
...

Partial node bitcoin.conf example:

Code:

...
rpcuser=Ulysseys
rpcpassword=random_authvalue_DO_NOT_USE_THIS_STRING_OR_YOU_WILL_GET_ROBBED
rpcconnect=192.168.1.42
...

tl121

sr. member

Activity: 278

Merit: 254

I have run bitcoin core on a number of computers on my LAN that are configured (via the config file) to only talk to one front-facing bitcoind on a dedicated computer. I mostly did this for test purposes. The problem is that every time you turn on a a bitcoin node it has to catch up its copy of the block chain. This takes a while even going directly over a gigabit/second LAN connection. About the only benefit of running this way is that it eliminates extra traffic on my (slow) Internet connection.

Presently, I run an Electrum server on my dedicated bitcoin node. I run Electrum clients on several of my other computers and these access the dedicated node on demand. Electrum clients support Trezor, making providing convenient access to bitcoins secured by a hardware wallet.

d4n13

full member

Activity: 210

Merit: 104

“Create Your Decentralized Life”

Thanks... to add to your research, that was for an older version of MultiBit.

New MultiBitHD uses "mbhd.yaml", but I think the process is similar. Still trying to document mbhd.yaml

achow101

staff

Activity: 3458

Merit: 6793

Just writing some code

here is what I found for the properties file: https://github.com/jim618/multibit/blob/master/configuration.md
It doesn't have everything about the properties file, but it does have the thing about peers.

d4n13

full member

Activity: 210

Merit: 104

“Create Your Decentralized Life”

Shazam!!!

many many thanks.

Didn't see the specification to the properties file, but I only just found the multibit github repo.

You have a link to the full property specification?

achow101

staff

Activity: 3458

Merit: 6793

Just writing some code

open the file multibit.properties in %appdata%/Multibit
Add the line

Code:

peers=

where is a comma separated list of ip addresses of the nodes you want it to connect to.

d4n13

full member

Activity: 210

Merit: 104

“Create Your Decentralized Life”

Any suggestions on how to make a bitcoinJ client (aka MultiBit) be specific on its node selection?

Multibit.exe -connect=10.10.10.5 ?

achow101

staff

Activity: 3458

Merit: 6793

Just writing some code

Bitcoin Core be default is a full node. You cannot change it to be a partial node without changing the code. In order to have a partial node, you need other software, such as something built on BitcoinJ (e.g. MultiBit) and you can specifically have it only connect to your Bitcoin Core full node.

d4n13

full member

Activity: 210

Merit: 104

“Create Your Decentralized Life”

OK... looks like bitcoinj may be what I'm after. The WalletTemplate class looks perfectly sufficient.

There is some APIs that control the peer list, and looks to be a sample of building this list manually, which is what I'm after.

I'll keep digging, but this is pretty "close-enough" for my windows and linux machines.

Anyone else have a simpler answer, aka "bitcoin-qt.exe -partial -connect=10.10.10.50"?

Thx

d4n13

full member

Activity: 210

Merit: 104

“Create Your Decentralized Life”

I have a full node running on my LAN, and would like to utilize it's work on other clients.

How to I get bitcoin core to run a partial node trusting my dedicated full node for blockchain queries (or has that not been invented yet)?

Thx

Topic: How to run a partial node connected to full node? (Read 1903 times)