Setup a bitcoind full node

September 1, 2016

See also Linux Instructions

Install

apt-get install openssh-server rsync ca-certificates lm-sensors postfix mailutils speedometer sysstat

Create user:

useradd -m bitcoin
su - bitcoin
mkdir ~/src
cd src
wget [from here](https://bitcoin.org/bin/bitcoin-core-0.13.0/bitcoin-0.13.0-x86_64-linux-gnu.tar.gz)
wget [signing key from here](https://bitcoin.org/laanwj-releases.asc)
wget [SHA256SUMS.asc from here](https://bitcoin.org/bin/bitcoin-core-0.13.0/SHA256SUMS.asc)
gpg --import laanwj-releases.asc

Verify fingerprint and local sign!

gpg --verify SHA256SUMS.asc

If corret go on:

tar xfz bitcoin-0.13.0-x86_64-linux-gnu.tar.gz
install -m 0755 -o root -g root -t /usr/local/bin bitcoin-0.13.0/bin/*

Configure

sysstat

vi /etc/default/sysstat
ENABLED="true"

Postfix

Configure postfix according to this

Logwatch

Configure logwatch according to this

Fail2ban

Configure fail2ban according to this

Unattended upgrades

Configure unattended upgrades according to this

Bitcoin core

Create config file:

mkdir ~/.bitcoin
touch ~/.bitcoin/bitcoin.conf
chmod 600 ~/.bitcoin/bitcoin.conf
cat << EOF >~/.bitcoin/bitcoin.conf
par=3
daemon=1
txindex=1
debug=mempool
shrinkdebuglog=1
maxuploadtarget=2700
alertnotify=echo %s | mail -s "Bitcoin Alert" admin@foo.com
EOF

Automatic start after reboot, if special disk monted on /home/bitcoin is there:

cd /home/bitcoin
mkdir -disk-here
crontab -e
PATH=/home/bitcoin/bin:/usr/local/bin:/usr/bin:/bin
@reboot if [ -f /home/bitcoin/.disk-here ]; then bitcoind -daemon; fi

Tweaking .bashrc:

vi ~/.bashrc
alias log='tail -f ~/.bitcoin/*.log'
alias alog='tail -f ~/.bitcoin/*.log | grep -v "UpdateTip"'
alias speed='speedometer -r eth0 -t eth0'
EOF
. ~/.bashrc

Firewall

Add port 8333 forwarding rule to the system that runs bitcoind.

Validate that connectioncount is >8, so bitcoind is accepting incoming connections:

bitcoin-cli getconnectioncount
11