ELK工作流程
多个独立的Agent(Shipper)负责收集不同来源的数据,一个中心Agent(Indexer)负责汇总和分析数据,在中心Agent前的Broker(使用Redis实现)作为缓冲区,中心Agent后的ElasticSearch用于存储和搜索数据,前端的Kibana提供丰富的图表展示。
Shipper表示日志收集,使用LogStash收集各种来源的日志数据,可以是系统日志、文件、Redis、mq等等;
Broker作为远程Agent与中心Agent之间的缓冲区,使用Redis实现,一是可以提高系统的性能,二是可以提高系统的可靠性,当中心Agent提取数据失败时,数据保存在Redis中,而不至于丢失;
中心Agent(Indexer)也是LogStash,从Broker中提取数据,可以执行相关的分析和处理(Filter);
ElasticSearch用于存储最终的数据,并提供搜索功能;
Kibana提供一个简单、丰富的Web界面,数据来自于ElasticSearch,支持各种查询、统计和展示
机器部署
Logstash
(Logstash部署在IP为192.168.123.2的机器上。)
数据流
input|decode|filter|encode|output
安装和配置
1.安装Java环境
2.下载并安装GPG key
[root@localhost ~]# rpm --import http:
3.yum源配置
3.安装Logstash
[root@localhost ~]
4.安装目录
5.编辑一个简单的配置文件
将日志存储到ES中的配置:
6.运行测试
[root@localhost ~]
[root@localhost ~]
结果:
OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
hello,ichunqiu!
--- jar coordinate com.fasterxml.jackson.core:jackson-annotations already loaded with version 2.7.1 - omit version 2.7.0
--- jar coordinate com.fasterxml.jackson.core:jackson-databind already loaded with version 2.7.1 - omit version 2.7.1-1
Sending logstash logs to /var/log/logstash/logstash.log.
Pipeline main started
2017-12-16T13:23:56.586Z localhost.localdomain hello,ichunqiu!
2017-12-16T13:23:56.586Z localhost.localdomain hello,ichunqiu!
7.遇到的问题:
[root@localhost bin]
OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
--- jar coordinate com.fasterxml.jackson.core:jackson-annotations already loaded with version 2.7.1 - omit version 2.7.0
--- jar coordinate com.fasterxml.jackson.core:jackson-databind already loaded with version 2.7.1 - omit version 2.7.1-1
Logstash has a new settings file which defines start up time settings. This file is typically located in $LS_HOME/config or /etc/logstash. If you installed Logstash through a package and are starting it manually please specify the location to this settings file by passing in "--path.settings=/path/.." in the command line options {:level=>:warn}
Failed to load settings file from "path.settings". Aborting... {"path.settings"=>"/usr/share/logstash/config", "exception"=>Errno::ENOENT, "message"=>"No such file or directory - /usr/share/logstash/config/logstash.yml", :level=>:fatal}
ElasticSearch
数据流
安装和配置
如果是在不同机器上安装,则需要像Logstash的步骤1一样配置好Java环境。
(本文在不同机器上部署,以下配置在IP为192.168.123.3的机器上进行。)
1.下载并安装GPG key
[root@localhost ~]# rpm --import https:
2.yum源配置
3.安装ElasticSearch
[root@localhost ~]
4.安装目录
5.修改 limits.conf
6.创建目录并授权
[root@localhost ~]# mkdir -p /data/es-data
[root@localhost ~]# chown -R elasticsearch.elasticsearch /data/es-data/
7.配置elasticsearch.yml
8.启动ElasticSearch
[root@localhost elasticsearch]# /etc/init.d/elasticsearch start
正在启动 elasticsearch:OpenJDK 64-Bit Server VM warning: If the number of processors is expected to increase from one, then you should configure the number of parallel GC threads appropriately using -XX:ParallelGCThreads=N
[确定]
8.检查启动
[root@localhost init.d]
498 4094 1 42 22:46 ? 00:00:20 /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-2.4.6.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 4142 1524 0 22:47 pts/0 00:00:00 grep elasticsearch
9.访问测试
windows下访问:
10.遇到的问题;
[root@localhost elasticsearch]
解决方法:
在错误提示的地方加空格。
11.安装Elasticsearch插件
[root@localhost init.d]
-> Installing mobz/elasticsearch-head...
Trying https:
Downloading ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................DONE
Verifying https:
NOTE: Unable to verify checksum for downloaded plugin (unable to find .sha1 or .md5 file to verify)
Installed head into /usr/share/elasticsearch/plugins/head
在浏览器中访问地址:http:
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Kibana
安装和配置
1.下载并安装GPG Key:
rpm --import https:
2.yum源配置
[root@localhost ~]
[kibana-4.5]
name=Kibana repository for 4.5.x packages
baseurl=http://packages.elastic.co/kibana/4.5/centos
gpgcheck=1
gpgkey=http://packages.elastic.co/GPG-KEY-elasticsearch
enabled=1
[root@localhost ~]
3.安装Logstash
[root@localhost ~]
4.安装目录
[root@localhost ~]# whereis kibana
kibana: /opt/kibana/bin/kibana /opt/kibana/bin/kibana.bat
5.修改配置文件
[root@localhost ~]
[root@abcdocker ~]
server.port: 5601
server.host: "0.0.0.0"
elasticsearch.url: "http://192.168.123.3:9200"
kibana.index: ".kibana"
6.启动Kibana
[root@abcdocker ~]
7.检查端口
8.访问
访问地址:http: