在上一篇中，總結了部署私有IPFS網路的具體步驟。後來覺得可以把整個流程做成自動化的部署工具，以後用起來會比較方便。

閒言少敘，直接上程式碼。要用的話直接copy到一個start.sh檔案，然後執行就可以了。引數只有一個peerNumber，用於指定IPFS網路的容量。比如：./start.sh 3
會啟動包含3個節點的私有IPFS網路。

#!/bin/bash

function bootIpfsPeer {
    index=$1
    hostName=ipfs_host_${index}

    ipfs_staging=/tmp/ipfs_staging_${index}
 

    rm -rf $ipfs_staging
    mkdir -p $ipfs_staging

    ipfs_data=/tmp/ipfs_data_${index}
    rm -rf $ipfs_data
    mkdir -p $ipfs_data

    cp ./data/swarm.key $ipfs_data

    echo "Creating ${hostName} ..."
    docker run -d --name ${hostName} \
        -v ${ipfs_staging}:/export \
        -v ${ipfs_data}
 
:/data/ipfs \
        -p $((4001 + index)):4001 \
        -p $((5001 + index)):5001 \
        -p 127.0.0.1:$((8080 + index)):8080 \
        ipfs/go-ipfs:latest

    echo "Remove bootstrap for ${hostName} ..."
    docker exec ${hostName} ipfs bootstrap rm --all
}

function setupIpfsNetwork {
    for (( i=0; i<$1; i++
 
 ))
    do
        bootIpfsPeer ${i}
    done
}

function createSwarmKey {
    rm -rf ./data
    mkdir -p ./data
    go get github.com/Kubuxu/go-ipfs-swarm-key-gen/ipfs-swarm-key-gen
    $GOPATH/bin/ipfs-swarm-key-gen > ./data/swarm.key
}

function rmIpfsHosts {
    dockerContainers=$(docker ps -a | awk '$2~/ipfs/ {print $1}')
    if [ "$dockerContainers" != "" ]; then
       echo "Deleting existing docker containers ..."
       docker rm -f $dockerContainers
    fi
}

function showResult {
    docker ps -a
}

function main {
    rmIpfsHosts
    createSwarmKey
    setupIpfsNetwork $1

    showResult
}

if [ "$#" -ne 1 ]; then
    echo "ERROR: Peers number must be set for private ipfs network"
    echo "usage: start.sh \${peerNumber}"
    echo "For example: Run this command"
    echo "                 ./start.sh 3"
    echo "             A private ipfs network with 3 peers will be setup locally"
    exit 1
else
    main $1
fi