Elasticsearch和mysql数据同步(logstash)

1、版本介绍


Elasticsearch:
版本:2.4.0
 
Logstash:
版本:2.4.0
所需要的安装文件,到官网下载即可。
 
还需要对应的数据库JDBC,这里使用的是mysql-connector-java-5.1.39.jar
 
Elasticsearch配置请参照之前的博客,不在这里介绍了。
 
2、Logstash安装配置
 
Logstash直接下载后解压即可,主要是配置文件的内容编写。
 
安装logstash-input-jdbc的Logstash插件,用来进行mysql、oracle等的数据同步。
 
[zsz@VS-zsz logstash-2.4.0]$ bin/plugin install logstash-input-jdbc
The use of bin/plugin is deprecated and will be removed in a feature release. Please use bin/logstash-plugin.
Validating logstash-input-jdbc
Installing logstash-input-jdbc
Installation successful
 
配置文件(自行指定文件名,这里命名为logstash-mysql.conf ):
[zsz@VS-zsz conf]$ vi logstash-mysql.conf 
input {
  jdbc {
    jdbc_driver_library => "/usr/local/logstash-2.4.0/mysql-connector-java-5.1.39.jar"
    jdbc_driver_class => "com.mysql.jdbc.Driver"
    jdbc_connection_string => "jdbc:mysql://192.168.****:3306/******?characterEncoding=UTF-8&useSSL=false"
    jdbc_user => "*****"
    jdbc_password => "*********"
    statement => "SELECT * FROM news limit 0,1"
    jdbc_paging_enabled => "true"
    jdbc_page_size => "50000"
    schedule => "* * * * *"
  }
}

filter {
   json {
        source => "message"
        remove_field => ["message"]
    }
}

output {
  stdout {
    codec => rubydebug
  }
  elasticsearch {
    hosts => "192.168.****"
    index => "myindex"
  }        
 
启动Logstash
[zsz@VS-zsz conf]$ /usr/local/logstash-2.4.0/bin/logstash -f /usr/local/logstash-2.4.0/conf/logstash-mysql.conf 
Settings: Default pipeline workers: 2
Pipeline main started
{
                  "pk" => 8,
             "user_pk" => 11,
            "media_pk" => 5,
            "topic_pk" => 0
}
{
                  "pk" => 8,
             "user_pk" => 11,
            "media_pk" => 5,
            "topic_pk" => 0
}
........
 
这个进程会一直执行下去,因为设置的schedule => "* * * * *"(每分钟执行一次),如果想结束进程需要kill掉进程。
 
 
查看elasticsearch是否同步数据成功
[root@VS-zsz conf]# curl '192.168.31.79:9200/_cat/indices?v'
health status index   pri rep docs.count docs.deleted store.size pri.store.size
green  open   test      5   1          0            0      1.5kb           795b
green  open   myindex   5   1        494            0    924.7kb        457.6kb
[root@VS-zsz conf]# curl '192.168.31.78:9200/_cat/indices?v'
health status index   pri rep docs.count docs.deleted store.size pri.store.size
green  open   test      5   1          0            0      1.5kb           795b
green  open   myindex   5   1        494            0      925kb        457.8kb
[root@VS-zsz conf]# curl '192.168.31.79:9200/_cat/indices?v'
health status index   pri rep docs.count docs.deleted store.size pri.store.size
green  open   test      5   1          0            0      1.5kb           795b
green  open   myindex   5   1        494            0      925kb        457.8kb 
 
说明数据成功导入,而且在设置了定时任务的情况下, myindex索引的容量不断增加。
 
5、常见错误:
(1)Pipeline aborted due to error {:exception=>"LogStash::ConfigurationError", :backtrace=>..................stopping pipeline {:id=>"main"}
原因:logstash-mysql.conf 文件配置错误,对于>=2.*的版本, elasticsearch 的参数名应为hosts,如果设置为host则会报错。此处应该是可以配置多个数据源。
 
 
 
posted @ 2016-10-13 17:47  Zhong433  阅读(10422)  评论(0编辑  收藏  举报