ELK Stack是什么?
ELK Stack 是 Elasticsearch、Logstash、Kibana 三个开源软件的组合。在实时数据检索和分析场合，三者通常是配合共用，而且又都先后归于 Elastic.co 公司名下，故有此简称。
ELK Stack 在最近两年迅速崛起，成为机器数据分析，或者说实时日志处理领域，开源界的第一选择。和传统的日志处理方案相比，ELK Stack 具有如下几个优点
ELK Stack 优点
• 处理方式灵活。Elasticsearch 是实时全文索引，不需要像 storm 那样预先编程才能使用； • 配置简易上手。Elasticsearch 全部采用 JSON 接口，Logstash 是 Ruby DSL 设计，都是目前业界最通用的配置语法设计； • 检索性能高效。虽然每次查询都是实时计算，但是优秀的设计和实现基本可以达到全天数据查询的秒级响应； • 集群线性扩展。不管是 Elasticsearch 集群还是 Logstash 集群都是可以线性扩展的； • 前端操作炫丽。Kibana 界面上，只需要点击鼠标，就可以完成搜索、聚合功能，生成炫丽的仪表板。 以上摘自ELKstack中文指南
Logstash是能够用于收集,处理和转发事件或日志信息的工具. Logstash: Logstash服务的组件，用于处理日志 Elasticsearch: 用于存储,索引日志 Kibana 4: 搜索和可视化的日志的Web界面.
Elasticsearch和Logstash需要运行Java环境,并且版本最好是1.7以上. 首先必须安装java7及以上的版本
http://www.java.com/zh_CN/download/linux_manual.jsp [root@192_168_174_68 home]# wget 'http://sdlc-esd.Oracle.com/ESD6/JSCDL/jdk/8u73-b02/jre-8u73-linux-x64.rpm?GroupName=JSC&FilePath=/ESD6/JSCDL/jdk/8u73-b02/jre-8u73-linux-x64.rpm&BHost=javadl.sun.com&File=jre-8u73-linux-x64.rpm&AuthParam=1457343423_73675d83c3aa00d667217e09e10d85c2&ext=.rpm' -O jre-8u73-linux-x64.rpm --2016-03-07 17:18:01-- http://sdlc-esd.oracle.com/ESD6/JSCDL/jdk/8u73-b02/jre-8u73-linux-x64.rpm?GroupName=JSC&FilePath=/ESD6/JSCDL/jdk/8u73-b02/jre-8u73-linux-x64.rpm&BHost=javadl.sun.com&File=jre-8u73-linux-x64.rpm&AuthParam=1457343423_73675d83c3aa00d667217e09e10d85c2&ext=.rpm Resolving sdlc-esd.oracle.com... 96.7.54.179, 96.7.54.187 Connecting to sdlc-esd.oracle.com|96.7.54.179|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 49210622 (47M) [application/x-sdlc] Saving to: “jre-8u73-linux-x64.rpm” 100%[=================================================>] 49,210,622 1.58M/s in 31s 2016-03-07 17:18:32 (1.51 MB/s) - “jre-8u73-linux-x64.rpm” saved [49210622/49210622]
安装jdk
[root@192_168_174_68 home]# yum install jre-8u73-linux-x64.rpm -y
[root@192_168_174_68 home]# java -version java version "1.8.0_73" Java(TM) SE Runtime Environment (build 1.8.0_73-b02) Java HotSpot(TM) 64-Bit Server VM (build 25.73-b02, mixed mode)
Elasticsearch 2.2.0安装
YUM / DNF安装 下载并安装公钥: [root@192_168_174_68 ~]# rpm --import https://packages.elastic.co/GPG-KEY-elasticsearch 创建/etc/yum.repos.d/elasticsearch.repo文件,复制下面的内容到文件中 [root@192_168_174_68 ~]# vim /etc/yum.repos.d/elasticsearch.repo [elasticsearch-2.x] name=Elasticsearch repository for 2.x packages baseurl=https://packages.elastic.co/elasticsearch/2.x/CentOS gpgcheck=1 gpgkey=https://packages.elastic.co/GPG-KEY-elasticsearch enabled=1 安装elasticsearch [root@192_168_174_68 ~]# yum install elasticsearch #新版本的Fedora使用 dnf install elasticsearch 配置elasticsearch服务自动启动,SysV init 版本使用 chkconfig --add elasticsearch systemd使用: sudo /bin/systemctl daemon-reload sudo /bin/systemctl enable elasticsearch.service 修改elasticsearch配置 [root@192_168_174_68 ~]# mkdir /opt/elasticsearch.path.data [root@192_168_174_68 elasticsearch]# vim /etc/elasticsearch/elasticsearch.yml path.data: /opt/elasticsearch.path.data network.host: 0.0.0.0
启动服务: [root@192_168_174_68 opt]# service elasticsearch start Starting elasticsearch: [ OK ] [root@192_168_174_68 opt]# ps aux |grep elastic 498 8171 24.3 3.2 6815980 263784 ? Sl 17:24 0:10 /usr/bin/java -Xms256m -Xmx1g -Djava.awt.headless=true -XX: UseParNewGC -XX: UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX: UseCMSInitiatingOccupancyOnly -XX: HeapDumpOnOutOfMemoryError -XX: DisableExplicitGC -Dfile.encoding=UTF-8 -Djna.nosys=true -Des.path.home=/usr/share/elasticsearch -cp /usr/share/elasticsearch/lib/elasticsearch-2.2.0.jar:/usr/share/elasticsearch/lib/* org.elasticsearch.bootstrap.Elasticsearch start -p /var/run/elasticsearch/elasticsearch.pid -d -Des.default.path.home=/usr/share/elasticsearch -Des.default.path.logs=/var/log/elasticsearch -Des.default.path.data=/var/lib/elasticsearch -Des.default.path.conf=/etc/elasticsearch root 8283 0.0 0.0 103252 844 pts/1 S 17:25 0:00 grep elastic [root@192_168_174_68 opt]# netstat -lntp |grep 8171 tcp 0 0 ::ffff:127.0.0.1:9200 :::* LISTEN 8171/java tcp 0 0 ::1:9200 :::* LISTEN 8171/java tcp 0 0 ::ffff:127.0.0.1:9300 :::* LISTEN 8171/java tcp 0 0 ::1:9300 :::* LISTEN 8171/java [root@192_168_174_68 opt]# 服务已经启动.
kibana4.4.1安装:
在下载主界面,有这么一行字,所以要注意与安装的elasticsearch相匹配. Note: Kibana 4.4.1 requires Elasticsearch 2.2.
下载安装包. [root@192_168_174_68 ~]# wget https://download.elastic.co/kibana/kibana/kibana-4.4.1-linux-x64.tar.gz [root@192_168_174_68 ~]# tar zxvf kibana-4.4.1-linux-x64.tar.gz -C /opt/ [root@192_168_174_68 ~]# cd /opt/kibana-4.4.1-linux-x64/ 修改配置文件 [root@192_168_174_68 kibana-4.4.1-linux-x64]# vim config/kibana.yml server.port: 5601 server.host: "0.0.0.0" elasticsearch.url: "http://192.168.174.68:9200" 启动服务 [root@192_168_174_68 kibana-4.4.1-linux-x64]# nohup ./bin/kibana -l /var/log/kibana4.4.1.log & [1] 8867 nohup: ignoring input and appending output to `nohup.out'
logstash安装
YUM源安装方式 下载安装公钥 rpm --import https://packages.elastic.co/GPG-KEY-elasticsearch 创建/etc/yum.repo.d/logstash.repo文件 [root@192_168_174_68 ~]# vim /etc/yum.repos.d/logstash.repo
[logstash-2.2] name=Logstash repository for 2.2.x packages baseurl=http://packages.elastic.co/logstash/2.2/CentOS gpgcheck=1 gpgkey=http://packages.elastic.co/GPG-KEY-elasticsearch enabled=1
[root@192_168_174_68 ~]# yum install logstash -y
测试: [root@192_168_174_68 logstash]# JAVA_HOME=/usr/java/jre1.8.0_73 && /opt/logstash/bin/logstash -e 'input { stdin { } } output { stdout {} }' Settings: Default pipeline workers: 8 Logstash startup completed talen 2016-03-07T09:51:08.290Z 192_168_174_68 talen 测试OK 下面使用log4j模块收集日志
从Log4j SocketAppender通过TCP读取事件.只支持log4j 1.x版本.根据配置mode的不同,可以接受客户端连接也可以连接到服务端.根据mode不同,必需在对端配置SocketAppender或SocketHubAppender. 编辑业务的log4j配置,添加如下信息 log4j.rootLogger=logstash log4j.appender.logstash=org.apache.log4j.net.SocketAppender log4j.appender.logstash.port=56789 log4j.appender.logstash.remoteHost=192.168.174.68 修改logstash配置信息 [root@192_168_174_68 ~]# cat /etc/logstash/conf.d/3rd.conf input { log4j { mode => "server" host => "0.0.0.0" port => 56789 type => "log4j" } } #The geoip plugin configuration requires data that is already defined as separate fields. Make sure that the geoip section is after the grok section of the configuration file. output { elasticsearch { hosts => "192.168.174.68:9200" } } 在浏览器中输入http://192.168.174.68:5601,可以看到收集上来的日志
问题一
[root@192_168_174_68 ~]# service elasticsearch start Starting elasticsearch: Exception in thread "main" java.lang.IllegalStateException: Unable to access 'path.data' (/opt/elasticsearch.path.data/elasticsearch) Likely root cause: java.nio.file.AccessDeniedException: /opt/elasticsearch.path.data/elasticsearch at sun.nio.fs.UnixException.translateToIOException(Unknown Source) at sun.nio.fs.UnixException.rethrowAsIOException(Unknown Source) at sun.nio.fs.UnixException.rethrowAsIOException(Unknown Source) at sun.nio.fs.UnixFileSystemProvider.createDirectory(Unknown Source) at java.nio.file.Files.createDirectory(Unknown Source) at java.nio.file.Files.createAndCheckIsDirectory(Unknown Source) at java.nio.file.Files.createDirectories(Unknown Source) at org.elasticsearch.bootstrap.Security.ensureDirectoryExists(Security.java:337) at org.elasticsearch.bootstrap.Security.addPath(Security.java:314) at org.elasticsearch.bootstrap.Security.addFilePermissions(Security.java:259) at org.elasticsearch.bootstrap.Security.createPermissions(Security.java:212) at org.elasticsearch.bootstrap.Security.configure(Security.java:118) at org.elasticsearch.bootstrap.Bootstrap.setupSecurity(Bootstrap.java:196) at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:167) at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:285) at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:35) Refer to the log for complete error details. [FAILED]
解决
[root@192_168_174_68 opt]# chmod 777 /opt/elasticsearch.path.data/
