example of using chef-search to populate zookeeper IPs for kafka

kafka_zk.rb

zookeeper_service_name = "lookout-zk"
zk_ips = []

log("no OVERRIDE found for zookeeper ips, autodiscovering.")
search(:node, "name:#{zookeeper_service_name}-#{mytag}-*").each do |n|
  zk_ips << "#{n[:ipaddress]}:2181"
end

log("ZOOKEEPER IPS: #{zk_ips.inspect}")
node.override[:kafka][:broker][:zookeeper][:connect] = zk_ips.join(",")
node.save
log("Zookeepers set: #{node[:kafka][:broker][:zookeeper][:connect]}")