dcrd Setup Guide¶
Last updated for v0.8.2.
This guide is intended to help you setup the
dcrd application using startup flags.
- Use either the latest dcrinstall to install
dcrd. Additional steps will be required if another installation method was used.
- Review how the launch commands for the Command Prompt (Windows) and Bash (OSX/Linux) shells differ here.
dcrd is the node daemon for Decred. A daemon is a program that works in the background that you do not interface with directly.
dcrd maintains the entire past transactional ledger (or blockchain) of Decred and allows relaying of transactions to other Decred nodes across the world. You can think of it as your own personal Decred blockchain server. The blockchain is saved in the
data folder within
dcrd‘s home directory.
Advanced Users: If you are running in headless mode via SSH, you
will need to use a terminal multiplexer such as screen
or tmux. Where you see the instruction to
move to another shell, you’ll need to start a new window in
Connect to the Decred Network¶
The first time launching
dcrd, it will connect to the Decred network and begin downloading the blockchain. To allow
dcrctl to communicate with
dcrd, the configuration files must have
rpcpass settings enabled.
Configure RPC Username and Password
If you used
dcrinstall, your configuration files are already setup with the RPC username/password for
If you did not use
dcrinstall, you will need to enable the bare minimum settings in your configuration files. Follow this guide to do so.
With the correctly set configuration files, open another shell window in your Decred directory (or use the last window if you have just created your wallet). Type the following command (review this guides Prerequisites to determine exact command depending on your OS/Shell application):
Wait for dcrd to Sync to the Decred Blockchain
dcrd launches successfully, you should see your shell window begin to fill up with messages as the daemon connects to the network and starts processing blocks. Wait until it is completed - the entire blockchain is being downloaded into the
dcrd data directory.
You will see a line at the start like this:
22:58:04 2016-02-09 [INF] BMGR: Syncing to block height 617 from peer 18.104.22.168:9108
Then, as it continues to download blocks, you will see lines like this:
22:58:16 2016-02-09 [INF] BMGR: Processed 321 blocks in the last 10.03s (544 transactions, height 322, 2016-02-09 09:50:34 +1000 EST)
The blockchain will be fully synced once the most recently processed block is the current block height. You can tell by either comparing the date and time in the log message or by comparing the height of the last block processed against the last block height on the official block explorer.
Note that this connection will be used in the future. You must leave this
dcrd instance running in order to use
Now that you’ve set up
dcrd, visit the dcrwallet Setup guide.