Install and run riak in a distributed mode on Mac OSX using homebrew

README.md

Install

1. brew install riak
2. cd `brew --prefix riak`
3. copy the create_cluster.sh script into this dir

• see this SO post and this blog for the script.

1. run the script

• chmod u+x create_cluster.sh
• ./create_cluster.sh

Run

1. Reset ulimit

• ulimit -n 4096
• Otherwise, you'll get a warning with Riak and your instances will keep dying:
• WARNING: ulimit -n is 256; 4096 is the recommended minimum.
• To make this permanent, put it in your ~/.zshrc or similar.

1. ps -ef | grep riak

• Kill the epmd daemon. That's cause we need it to restart after the config change above.

1. Start the riak instances

• /usr/local/Cellar/riak/dev/dev1/bin/riak start
• make sure it responds to ping with a pong
• /usr/local/Cellar/riak/dev/dev1/bin/riak ping
• Repeat for instances 2-n

1. Join the instances into a cluster:

• /usr/local/Cellar/riak/dev/dev2/bin/riak-admin cluster join dev1@127.0.01
• /usr/local/Cellar/riak/dev/dev3/bin/riak-admin cluster join dev2@127.0.01
• etc.

create_cluster.sh

#!/bin/bash

# from http://ottopoellath.github.io/blog/2012/04/08/running-a-three-node-riak-cluster-using-a-homebrew-installation/

CWD=$(cd $(dirname $0); pwd)

BASE_DIR="${CWD}/dev"
echo "Creating dev directory ${BASE_DIR}"
mkdir "${BASE_DIR}"

for node in 1 2 3 4; do
  NODE_NAME="dev${node}"
  NODE_DIR="$BASE_DIR/$NODE_NAME"

  echo "Creating node ${NODE_NAME}"
  cp -r $(brew --prefix riak) $NODE_DIR

  echo "  Removing data dir"
  rm -rf "$NODE_DIR/libexec/data/"

  HTTP="809${node}"
  echo "  Setting 'http' to '${HTTP}'"
  perl -p -i.bak -e 's/({http, \[ {"\d+\.\d+\.\d+\.\d+", )(\d+)( } ]})/${1}'${HTTP}'${3}/g' "$NODE_DIR/libexec/etc/app.config"

  HANDOFF_PORT="810${node}"
  echo "  Setting 'handoff_port' to '${HANDOFF_PORT}'"
  perl -p -i.bak -e 's/({handoff_port, )(\d+)( })/${1}'${HANDOFF_PORT}'${3}/g' "$NODE_DIR/libexec/etc/app.config"

  PB_PORT="808${node}"
  echo "  Setting 'pb_port' to '${PB_PORT}'"
  perl -p -i.bak -e 's/({pb_port, )(\d+)( })/${1}'${PB_PORT}'${3}/g' "$NODE_DIR/libexec/etc/app.config"

  NAME="dev${node}"
  echo "  Setting 'name' to '${NAME}'"
  perl -p -i.bak -e 's/(-name )(\S+)(@.*)$/${1}'${NAME}'${3}/g' "$NODE_DIR/libexec/etc/vm.args"

  NODE_BIN_DIR="$NODE_DIR/libexec/bin"
  echo "  Setting 'RUNNER_SCRIPT_DIR' to '${NODE_BIN_DIR}'"
  perl -p -i.bak -e "s|RUNNER_SCRIPT_DIR=.*$|RUNNER_SCRIPT_DIR=${NODE_BIN_DIR}|g" "$NODE_DIR/bin/riak" \
    "$NODE_DIR/bin/riak-admin" \
    "$NODE_DIR/bin/search-cmd" \
    "$NODE_DIR/libexec/bin/riak" \
    "$NODE_DIR/libexec/bin/riak-admin" \
    "$NODE_DIR/libexec/bin/search-cmd"
done