本文是參考logstash官方文檔實踐的筆記，搭建環境和所需組件如下：
- Redhat 5.7 64bit / CentOS 5.x
- JDK 1.6.0_45
- logstash 1.3.2 (內帶kibana)
- elasticsearch 0.90.10
- redis 2.8.4
搭建的集中式日志分析平台流程如下：
elasticsearch
1、下載elasticsearch。
wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.90.10.tar.gz
2、解壓后，進入bin目錄。執行如下命令，讓elasticsearch以前台方式啟動：
./elasticsearch -f
[2014-01-16 16:21:31,825][INFO ][node ] [Saint Elmo] version[0.90.10], pid[32269], build[0a5781f/2014-01-10T10:18:37Z]
[2014-01-16 16:21:31,826][INFO ][node ] [Saint Elmo] initializing ...
[2014-01-16 16:21:31,836][INFO ][plugins ] [Saint Elmo] loaded [], sites []
[2014-01-16 16:21:35,425][INFO ][node ] [Saint Elmo] initialized
[2014-01-16 16:21:35,425][INFO ][node ] [Saint Elmo] starting ...
[2014-01-16 16:21:35,578][INFO ][transport ] [Saint Elmo] bound_address {inet[/0.0.0.0:9300]}, publish_address {inet[/10.0.2.15:9300]}
Redis
1、其安裝方式可以參考我的另一篇文章Redis編譯安裝。
2、進入其bin目錄，執行如下命令，使之在控制台輸出debug信息：
./redis-server --loglevel verbose
[32470] 16 Jan 16:45:57.330 * The server is now ready to accept connections on port 6379 [32470] 16 Jan 16:45:57.330 - 0 clients connected (0 slaves), 283536 bytes in use
logstash日志生成器（shipper）
1、新建一個配置文件：shipper.conf，其內容如下：
input {
stdin {
type => "example"
}
}
output {
stdout {
codec => rubydebug
}
redis {
host => "127.0.0.1"
port => 6379
data_type => "list"
key => "logstash"
}
}
2、啟動shipper。執行如下命令：
java -jar logstash-1.3.2-flatjar.jar agent -f shipper.conf
終端窗口將出現如下提示信息：
Using milestone 2 output plugin 'redis'. This plugin should be stable, but if you see strange behavior, please let us know! For more information on plugin milestones, see http://logstash.net/docs/1.3.2/plugin-milestones {:level=>:warn}
然后在終端窗口直接按回車，將出現如下信息：
{
"message" => "",
"@version" => "1",
"@timestamp" => "2014-01-16T08:15:19.400Z",
"type" => "example",
"host" => "redhat"
}
這個json信息將發送給redis， 同時redis的終端窗口將出現類似下面的提示信息：
[32470] 16 Jan 17:09:23.604 - Accepted 127.0.0.1:44640 [32470] 16 Jan 17:09:27.127 - DB 0: 1 keys (0 volatile) in 4 slots HT. [32470] 16 Jan 17:09:27.127 - 1 clients connected (0 slaves), 304752 bytes in use
logstash日志索引器（indexer）
1、新建一個配置文件：indexer.conf，其內容如下：
input {
redis {
host => "127.0.0.1"
# these settings should match the output of the agent
data_type => "list"
key => "logstash"
# We use the 'json' codec here because we expect to read
# json events from redis.
codec => json
}
}
output {
stdout { debug => true debug_format => "json"}
elasticsearch {
host => "127.0.0.1"
}
}
2、啟動日志索引器。執行如下命令：
java -jar logstash-1.3.2-flatjar.jar agent -f indexer.conf
終端窗口將出現如下提示信息：
Using milestone 2 input plugin 'redis'. This plugin should be stable, but if you see strange behavior, please let us know! For more information on plugin milestones, see http://logstash.net/docs/1.3.2/plugin-milestones {:level=>:warn}
You are using a deprecated config setting "debug_format" set in stdout. Deprecated settings will continue to work, but are scheduled for removal from logstash in the future. If you have any questions about this, please visit the #logstash channel on freenode irc. {:name=>"debug_format", :plugin=>, :level=>:warn}
索引器從Redis接收到信息，在終端窗口會顯示類似如下的信息：
{"message":"","@version":"1","@timestamp":"2014-01-16T17:10:03.831+08:00","type":"example","host":"redhat"}{"message":"","@version":"1","@timestamp":"2014-01-16T17:13:20.545+08:00","type":"example","host":"redhat"}{
logstash WEB界面（kibana）
1、啟動kibana。執行如下命令：
java -jar logstash-1.3.2-flatjar.jar web
2、打開瀏覽器（須支持HTML5），輸入地址：http://127.0.0.1:9292/index.html#/dashboard/file/logstash.json。界面效果如下：
參考資料