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symbol-bootstrap(暫定fast-sync)

Last updated at Posted at 2021-01-25

はじめに

symbol-bootstrapでtestnetのノードを最初から構築すると非常に時間がかかります。
(1日中やっても終わらない場合があります)

以下は、アーカイブしているデータからノードを構築するスクリプトです。
(いまのところtime4vpsのlinux8プランで大体1時間強くらいで完了します)

内容は、単純にtarget/databasesとtarget/nodes/node/dataの差し替えです。

そのうち本体側で実装されると思うので、あくまでもそれまでの暫定です。
https://github.com/nemtech/symbol-bootstrap/pull/115

本体側に実装されたら本記事は消します。

データについて

アーカイブは毎日4:00(JST)に作成しています。
ここから直接持って行って差し替えしても大丈夫と思います。

前提条件

スクリプト実行の前提は以下のとおり。

  • symbol-bootstrapでcomposeまで終わっていること

手順

手順は以下のとおり。

# targetがあるフォルダに移動
cd symbol-bootstrap
# fast-sync.shを保存、実行権付与
chmod +x fast-sync.sh
# 実行
./fast-sync.sh

以下はスクリプト(fast-sync.sh)

#!/bin/bash
#
# [USAGE]
#  fast-sync.sh [OPTION]... [TARGET]
#  -f     remove target/databases, target/nodes/node/data
#  -p     download data in parallel
#  -h     show usage
#
#  current directory is used for the target when no target argument specified.
#  
# [DESCRIPTION]
#  symbol-bootstrap fast sync tool(unofficial).
#  this tool run the following steps:ggVG
# 
# 1) symbol-bootstrap stop
#
# 2) recovery databases/data
#  https://symbol-archives.s3-ap-northeast-1.amazonaws.com/archives/mainnet.databases.tar.gz
#   -> $HOME/target/databases
#  https://symbol-archives.s3-ap-northeast-1.amazonaws.com/archives/mainnet.data.tar.gz
#   -> $HOME/target/nodes/node/data
#
# 3) symbol-bootstrap start -d
#
#
# [PREREQUISITES]
#  - before running this script, 
#   you need to setup symbol-bootstrap by symbol-bootstrap config & compose.
#
# [NOTE]
#  - tested in only linux as follows, it might not work in other environment.
#   CPU: 4 x 2.60 GHz
#   RAM: 16384 MB
#   Storage: 160 GB
#   Bandwidth: 16 TB
#   Port speed: 100 Mbps
#   Backups: Optional
#   Virtualization: KVM
#
# - this script removes the following directories,  
#   it might not work in your environment. if so,
#   please comment out rm statements.
#   target/databases
#   target/nodes/node/data
#
usage_exit() {
    cat <<EOF
Usage:  fast-sync.sh [OPTION]... [TARGET]
 -f, --force-clean     remove target/databases, target/nodes/node/data
 -p, --parallel        download data in parallel
 -h, --help            show usage

 current directory is used for the target when no target argument specified.
EOF
    exit 1
}

FORCE_CLEAN=0
PARALLEL_DL=0
while getopts fph OPT
do
    case $OPT in
    f)  FORCE_CLEAN=1
        ;;
    p)  PARALLEL_DL=1
        ;;
    h) usage_exit
        ;;
    \?) usage_exit
        ;;
    esac
done

shift $(($OPTIND - 1))
if [ $# -gt 0 ]; then
    BOOTSTRAP_HOME=$(cd $1 && pwd)
elif [ -z "$BOOTSTRAP_HOME" ]; then
    BOOTSTRAP_HOME=$(pwd)
fi
if [ ! -d "$BOOTSTRAP_HOME/target" ]; then
    echo "$BOOTSTRAP_HOME/target not found!"
    exit 1
fi
S3_URL=https://symbol-archives.s3-ap-northeast-1.amazonaws.com/archives
recover_data()
{
    echo "start recover data"
    cd $BOOTSTRAP_HOME/target/nodes/node/
    wget -O -  $S3_URL/mainnet.data.tar.gz | tar zxf -
    echo "end recover data"
}
recover_databases()
{
    echo "start recover database"
    cd $BOOTSTRAP_HOME/target
    wget -O -  $S3_URL/mainnet.databases.tar.gz | tar zxf -
    echo "end recover database"
}
date
cd $BOOTSTRAP_HOME
symbol-bootstrap stop
symbol-bootstrap stop

if [ "$FORCE_CLEAN" = 1 ]; then
    rm -rf $BOOTSTRAP_HOME/target/nodes/node/data
    rm -rf $BOOTSTRAP_HOME/target/databases
fi
if [ "$PARALLEL_DL" = 1 ]; then
    recover_data &
    recover_databases &
    wait
else
    recover_data
    recover_databases
fi 
cd $BOOTSTRAP_HOME
symbol-bootstrap run -d
date
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