logstash5.x安装及简单运用

Logstash requires Java 8. Java 9 is not supported.

1、检测是否安装了java环境

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[root@node3 ~]# java -version java version "1.8.0_144" Java(TM) SE Runtime Environment (build 1.8.0_144-b01) Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)

2、安装logstash，这里采用rpm安装

　　https://artifacts.elastic.co/downloads/logstash/logstash-5.6.1.rpm

　　yum install logstash

查看生成了哪些文件，查看logstash的执行文件位置：

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/etc/logstash/conf.d /etc/logstash/jvm.options /etc/logstash/log4j2.properties /etc/logstash/logstash.yml /etc/logstash/startup.options /usr/share/logstash/CHANGELOG.md /usr/share/logstash/CONTRIBUTORS /usr/share/logstash/Gemfile /usr/share/logstash/Gemfile.jruby-1.9.lock /usr/share/logstash/LICENSE /usr/share/logstash/NOTICE.TXT /usr/share/logstash/bin/cpdump /usr/share/logstash/bin/ingest-convert.sh /usr/share/logstash/bin/logstash /usr/share/logstash/bin/logstash-plugin /usr/share/logstash/bin/logstash-plugin.bat /usr/share/logstash/bin/logstash.bat /usr/share/logstash/bin/logstash.lib.sh /usr/share/logstash/bin/ruby /usr/share/logstash/bin/setup.bat /usr/share/logstash/bin/system-install /usr/share/logstash/data

　配置文件：

1、配置jvm

/etc/logstash/jvm.options

2、logstash的一些配置

/etc/logstash/logstash.yml

3、环境变量一些的配置

/etc/logstash/startup.options

4、日志与log4j2的配置

/etc/logstash/log4j2.properties

 

开始第一个任务：

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[root@node3 conf.d]# /usr/share/logstash/bin/logstash -e 'input { stdin {} } output { stdout {} }' WARNING: Could not find logstash.yml which is typically located in $LS_HOME/config or /etc/logstash. You can specify the path using --path.settings. Continuing using the defaults Could not find log4j2 configuration at path //usr/share/logstash/config/log4j2.properties. Using default config which logs errors to the console

　提示warning，解决办法：

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mkdir -p /usr/share/logstash/config/ ln -s /etc/logstash/* /usr/share/logstash/config chown -R logstash:logstash /usr/share/logstash/config/ bin/logstash -e 'input { stdin { } } output { stdout {} }'

　如果logstash不适用命令行执行，而是作为一个服务：

　　logstash启动：

　　/etc/init.d/logstash start

　　systemctl start logstash.service

 

开始编写配置文件进行logstash解析：

1、input插件中file插件的使用

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[root@node3 conf.d]# cat file.conf input {     file {         path => ["/var/log/messages"]         start_position => "beginning"     } }   output {     stdout {         codec => rubydebug     } } [root@node3 conf.d]# /usr/share/logstash/bin/logstash -f file.conf

　2、多个log日志的输入、

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[root@node3 conf.d]# cat file_more_choose.conf input {     file {         path => ["/var/log/messages"]         start_position => "beginning"     }     file {         path => ["/var/log/elasticsearch/my-elastic.log"]         start_position => "beginning"     } }   output {     stdout {         codec => rubydebug     } }

[root@node3 conf.d]# /usr/share/logstash/bin/logstash -f file_more_choose.conf

　但是发现只打印出elastic的日志，message的日志没有stdout，收集的日志是增量的，之前收集的日志已经存在sincedb中了，所以会默认从之后开始存

Path of the sincedb database file (keeps track of the current position of monitored log files) that will be written to disk. The default will write sincedb files to <path.data>/plugins/inputs/file NOTE: it must be a file path and not a directory path，这是一段sincedb_path的解释

 

检查配置文件的语法是否正确：

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-t, --config.test_and_exit    Check configuration for valid syntax and then exit.                                    (default: false) -r, --config.reload.automatic Monitor configuration changes and reload                                   whenever it is changed.                                   NOTE: use SIGHUP to manually reload the config                                    (default: false) [root@node3 conf.d]# /usr/share/logstash/bin/logstash -f file.conf -t Sending Logstash's logs to /var/log/logstash which is now configured via log4j2.properties Configuration OK

　3、以elasticsearch插件输出：

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input {     file {         path => ["/var/log/logstash/logstash-plain.log"]         start_position => "beginning"         type => "logstash"     } }     output {     elasticsearch {         hosts => ["192.168.44.134:9200"]         index => "logstash-log"         codec => rubydebug     } }

  

4、根据插件type来定义输出插件：

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[root@node3 conf.d]# cat type.conf input {     file {        path  => ["/var/log/logstash/logstash-plain.log"]        start_position => "beginning"        type => "logstash_2"     }     file {        path => ["/var/log/messages"]        start_position => "beginning"        type => "system"     } }     output {     if [type] == "logstash_2" {         elasticsearch {             hosts => ["192.168.44.134:9200"]             index => "logstash_2"             codec => rubydebug         }     }     if [type] == "system" {          stdout {             codec => rubydebug          }     } }

　现在向messages日志中echo一段话：

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1	echo "`date +%F`" >> /var/log/messages

　然后开始执行：

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[root@node3 conf.d]# /usr/share/logstash/bin/logstash -f type.conf Sending Logstash's logs to /var/log/logstash which is now configured via log4j2.properties {       "@version" => "1",           "host" => "node3",           "path" => "/var/log/messages",     "@timestamp" => 2017-09-20T08:19:05.782Z,        "message" => "2017-09-20",                这是刚刚echo新增的内容           "type" => "system" }

　查看es中的索引是否有生成：