KVAZAR Crawler

Kevacoin blockchain crawler with full-text index storage in shared Manticore database (based on Sphinx).

Compatible

• webapp
• geminiapp

Install

• apt install git composer manticore php-fpm php-curl php-mbstring php-pdo php-bcmath
• git clone https://github.com/kvazar-network/crawler.git
• cd crawler
• composer update

Setup

• cp example/config.json config.json
• crontab -e:* * * * * php src/index.php
  • drop index: php src/index.php drop
  • optimize index: php src/index.php optimize

To prevent data lose on server failures, change default binlog flush strategy to binlog_flush = 1

kevacoind

Remote or local kevacoind connection required as the data source for this crawler.

Requirements

• RAM: 1.5G+
• Disk: 2G+ (Kevacoin blockchain size in 2025)

kevacoin.conf

Before continue with examples, create new system user: useradd -m kevacoin and copy kevacoind compiled into its folder.

To accept RPC connections, create kevacoin.conf:

#/home/kevacoin/.kevacoin/kevacoin.conf
rpcuser=USERNAME
rpcpassword=PASSWORD

• make sure config.json corresponds rpcuser and rpcpassword values!

systemd

#/etc/systemd/system/kevacoin.service
[Unit]
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
User=kevacoin
Group=kevacoin
ExecStart=/home/kevacoin/kevacoind -server

[Install]
WantedBy=multi-user.target

• systemctl daemon-reload - apply systemd changes
• systemctl enable kevacoin - enable on system startup
• systemctl start kevacoin - launch kevacoind