Getting started with Logstash 2.2

Hi ,

I worked with logstash-1.4.2 and now I'm upgrading to logstash 2.2.
My conf file in version 1.4.2 is:

input {
file{
path => ["/tmp/31.json"]
type => "json"
start_position => "beginning"
sincedb_path => "/dev/null"
}
}

filter{
json {
source => "message"
}
}

filter{
date {
match => ["startTime", "UNIX_MS"]
target => "@timestamp"
}
}

output {
stdout {
codec => rubydebug
}
elasticsearch {
host => "ilautomation"
protocol => "http"
index => "index_client"
}
}

In logstash 2.2 I can run this file like this:

input {
file{
path => ["/tmp/31.json"]
type => "json"
start_position => "beginning"
sincedb_path => "/dev/null"
}
}

filter{
json {
source => "message"
}
}

filter{
date {
match => ["startTime", "UNIX_MS"]
target => "@timestamp"
}
}

output {
stdout {
codec => rubydebug
}
elasticsearch {
}

How I can define to which index to upload my data ?

BR,
Chen

If you change the part of elasticsearch to:
elasticsearch {
hosts => localhost
index => index_client
}

it works !!!