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running_node.md

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Running a Sugarchain Node on Linux

64-bit version is always recommended for best performance

Minimum Requirement (Date: 2020-05-26)

CPU: 1 core
RAM: 1024 MB
DISK: 5 GB

If you have only 1024 MB RAM, you need at least 3 GB swap.

Optional UTF-8 and Timezone

Download

wget https://github.com/sugarchain-project/sugarchain/releases/download/v0.16.3.34-starboy/sugarchain-0.16.3.34-starboy-x86_64-linux-gnu.tar.gz

Verify & Unzip

sha256sum sugarchain-0.16.3.34-starboy-x86_64-linux-gnu.tar.gz
# starboy # 4a79d2bb85c306fa37b57ab5790931103e4311b7dc8edeca4c86c3ec26590b62
tar -xvzf sugarchain-0.16.3.34-starboy-x86_64-linux-gnu.tar.gz

Crontab

  • Run crontab
crontab -e
  • Adding this line:
    • Remove debug.log at every reboot, to save disk space.
    • Starting node (daemon) at every reboot.
# delete logs
@reboot rm $HOME/.sugarchain/debug.log

# run daemon
@reboot $HOME/sugarchain-0.16.3/bin/sugarchaind -server=1 -rpcuser=rpcuser -rpcpassword=rpcpassword -daemon

# reboot every week on Monday(1) 01:01
# Minute | Hour | Day | Month | Day(Week) 
# 1 1 * * MON sudo /sbin/shutdown -r now

Firewall

Open some ports for Sugarchain

  • 22: SSH connection
  • 80: Website (optional)
  • 443: SSL (optional)
  • 34230: mainnet
  • 44230: testnet (optional)
sudo ufw allow 22 && \
sudo ufw allow 34230 && \
sudo ufw allow 44230 && \
sudo ufw enable && \
sudo ufw status

CLI commands

https://github.com/sugarchain-project/doc/blob/master/cli.md

Trouble Shooting

  • Stuck when restarting, if your RAM is under 1 GB.
    • sugarchain-project/sugarchain#156
    • init message: Rewinding blocks...
    • Using obfuscation key for /root/.sugarchain/blocks/index: 0000000000000000
    • Due to low memory, it can takes from some hours upto a day. Just wait.