Fullnode

Defichain Fullnode

To stabilize the network, it is possible to setup a Defichain Fullnode on a virtual or physical server with a fixed IP address. A Fullnode hold the whole blockchain without acting as a masternode (no Collateral required) and other Nodes and Wallets in the network can use it to synchronize. Everyone in the community can help make the network more stable with a public Fullnode.

Requirements

General

• Fixed IP-Address
• Port Forwarding enabled on Router (Port 8555)
• 24/7 online
• Stable Internetconnection (Upload)

Hardware

• 100 GB free disk space (SSD recommended)
• 2-4 vCPU
• 4 GB Memory

Software

• Debian 10, 64 Bit
• Ubuntu 16.04 LTS
• Ubuntu 18.04

List of Fullnodes

• 45.157.177.82:8555
• 185.244.194.174:8555
• 62.75.139.29:8555
  • Blockchain Snapshot Service & How-To: https://62.75.139.29/
• ...
• ...

to be continued...

Fullnode Installation

Ubuntu 16.04/18.04/20.04

Create Swapfile

recommended for Systems less then 4 GB

sudo fallocate -l 4G /swapfile

sudo chmod 600 /swapfile

sudo mkswap /swapfile

sudo swapon /swapfile

Check the swapfile

sudo swapon --show

make the Swapfile permanent

sudo cp /etc/fstab /etc/fstab.bak

echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab

Optimization

sudo sysctl vm.swappiness=10

sudo nano /etc/sysctl.conf

vm.swappiness=10

Install Fullnode

Latest Version

wget https://github.com/DeFiCh/ain/releases/download/v1.5.0/defichain-1.5.0-x86_64-pc-linux-gnu.tar.gz

unzip package

tar -xvzf defichain-1.5.0-x86_64-pc-linux-gnu.tar.gz

copy to directory

mkdir ~/.defi

cp ./defichain-1.5.0/bin/* ~/.defi

Start Fullnode

Start Fullnode

~/.defi/defid -daemon

When you upgrade from a previous version, please reindex the whole blockchaindata

~/.defi/bin/defid -reindex -daemon

Monitor Fullnode

Check Blockcount

.defi/bin/defi-cli getblockcount

Start defid after reboot

sudo crontab -e

* * * * * pidof defid || ~/.defi/bin/defid

Is your node online?

After the node is completely synchronized, check the number of connections with the command below.

~/.defi/bin/defi-cli getconnectioncount

If the number of connections is 8 or less, only outbound connections are active. Check your firewall or router to see whether your full node can be reached from the Internet via port 8555. More than 8 connections mean that incoming connections are also possible and exist.