local ethereum cluster

4 miner ethereum cluster

:) bash cluster.sh /tmp/59/01 4 1 blah
:)  grep ChainHeadEvent /tmp/59/01/04.log |cut -d':' -f5,7|tr -d ',' |awk '{print $1, $3}'> /tmp/59/01/04.blox
:)  grep ChainHeadEvent /tmp/59/01/03.log |cut -d':' -f5,7|tr -d ',' |awk '{print $1, $3}'> /tmp/59/01/03.blox
:)  grep ChainHeadEvent /tmp/59/01/02.log |cut -d':' -f5,7|tr -d ',' |awk '{print $1, $3}'> /tmp/59/01/02.blox
:)  grep ChainHeadEvent /tmp/59/01/01.log |cut -d':' -f5,7|tr -d ',' |awk '{print $1, $3}'> /tmp/59/01/01.blox
:) paste /tmp/59/01/*.blox | tail 
151 5dc86dcc    151 5dc86dcc    151 5dc86dcc    151 5dc86dcc
152 3ad33047    152 3ad33047    152 3ad33047    152 3ad33047
152 92cf6e23    152 92cf6e23    152 92cf6e23    152 92cf6e23
153 b4faa0eb    153 b4faa0eb    153 b4faa0eb    153 b4faa0eb
153 2edc7f6c    153 2edc7f6c    153 2edc7f6c    153 2edc7f6c
154 4df72cf0    154 4df72cf0    154 4df72cf0    154 4df72cf0
154 2014ffd5    154 2014ffd5    154 2014ffd5    154 2014ffd5
155 ce53b892    155 ce53b892    155 ce53b892    155 ce53b892
155 dc2c19e6    155 dc2c19e6    155 dc2c19e6    155 dc2c19e6
156 27784fd5    156 27784fd5
 :) killall ethereum

cluster.sh

#!/bin/bash
# bash cluster <cluster_root> <number_of_clusters> <network_id> <local_IP> [[params]...]
#
# sets up a local ethereum network cluster of nodes
# - the nodes are set up with datadir root/00, root/01, ...
# - the nodes log into root/00.log root/01.log, ...
# - new accounts are created for each
# - the new account is unlocked when they launch
# - they launch on port 30300, 30301, ...
# - by collecting the nodes nodeUrl, they get connected to each other
# - if enode has no IP, local_IP is substituted
# - if network_id is not 0, they will not connect to a default client,
#   resulting in a private isolated network
#
# the cluster can be killed with `killall ethereum` (FIXME: should record PIDs)
# and restarted from the same state

root=$1
mkdir -p $1
shift
N=$1
shift
network_id=$1
shift
local_ip=$1
shift

if [ ! -f "$root/nodes" ]; then
  # typeset -i i N # let's be explicit
  for ((i=1;i<=N;++i)); do
    id=`printf "%02d" $i`

    echo "getting enode for instance $id ($i/$N)"
    eth="./geth -datadir $root/$id -logfile /dev/null -port 303$id -networkid $network_id"
    cmd="$eth js <(echo 'console.log(admin.nodeInfo().NodeUrl)') "
    echo $cmd
    bash -c "$cmd" >> $root/nodes

    echo "setting coinbase for instance $i:"
    cmd="$eth -password <(echo $id) account new"
    echo $cmd
    bash -c "$cmd"

  done
fi

bootnodes=`cat $root/nodes|tr '\n' ' '|perl -pe "s/\[\:\:\]/$local_ip/g"`
echo $bootnodes | tr ' ' '\n' | nl

for ((i=1;i<=N;++i)); do
  id=`printf "%02d" $i`
  eth="./geth -unlock primary -password <(echo $id) -networkid $network_id -datadir $root/$id -logfile $root/$id.log -loglevel 5 -mine -port 303$id --bootnodes=\"$bootnodes\""
  cmd="$eth"

  echo "launching miner $i/$N \t tail -f $root/$id.log"
  echo $cmd $*
  bash -c "$cmd $* &"
done