1 概述
ELK套件(ELK stack)是指ElasticSearch、Logstash和Kibana三件套。这三个软件可以组成一套日志分析和监控工具。
由于三个软件各自的版本号太多,建议采用ElasticSearch官网推荐的搭配组合:http://www.elasticsearch.org/overview/elkdownloads/
2 环境准备
2.1 软件要求
具体的版本要求如下:
- 操作系统版本:CentOS 6.4;
- JDK版本:1.7.0;
- Logstash版本:1.4.2;
- ElasticSearch版本:1.4.2;
- Kibana版本:3.1.2;
2.2 防火墙配置
为了正常使用HTTP服务等,需要关闭防火墙:
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1. # service iptables stop
或者可以不关闭防火墙,但是要在iptables中打开相关的端口:
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1. # vim /etc/sysconfig/iptables
2. -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
3. -A INPUT -m state --state NEW -m tcp -p tcp --dport 9200 -j ACCEPT
4. -A INPUT -m state --state NEW -m tcp -p tcp --dport 9292 -j ACCEPT
5. # service iptables restart
3 安装JDK
ElasticSearch和Logstash依赖于JDK,所以需要安装JDK:
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1. # yum -y install java-1.7.0-openjdk*
2. # java -version
4 安装ElasticSearch
ElasticSearch默认的对外服务的HTTP端口是9200,节点间交互的TCP端口是9300。
下载ElasticSearch:
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1. # mkdir -p /opt/software && cd /opt/software
2. # sudo wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-1.4.2.tar.gz
3. # sudo tar -zxvf elasticsearch-1.4.2.tar.gz -C /usr/local/
4. # ln -s /usr/local/elasticsearch-1.4.2 /usr/local/elasticsearch
安装elasticsearch-servicewrapper,并启动ElasticSearch服务:
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1. # sudo wget https://github.com/elasticsearch/elasticsearch-servicewrapper/archive/master.tar.gz
2. # sudo tar -zxvf master
3. # mv /opt/software/elasticsearch-servicewrapper-master/service /usr/local/elasticsearch/bin/
4. # /usr/local/elasticsearch/bin/service/elasticsearch start
测试ElasticSearch服务是否正常,预期返回200的状态码:
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1. # curl -X GET http://localhost:9200
5 安装Logstash
Logstash默认的对外服务的端口是9292。
下载Logstash:
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1. # sudo wget https://download.elasticsearch.org/logstash/logstash/logstash-1.4.2.tar.gz
2. # sudo tar -zxvf logstash-1.4.2.tar.gz -C /usr/local/
3. # ln -s /usr/local/logstash-1.4.2 /usr/local/logstash
简单测试Logstash服务是否正常,预期可以将输入内容以简单的日志形式打印在界面上:
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1. # /usr/local/logstash/bin/logstash -e 'input { stdin { } } output { stdout {} }'
创建Logstash配置文件,并再次测试Logstash服务是否正常,预期可以将输入内容以结构化的日志形式打印在界面上:
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1. # mkdir -p /usr/local/logstash/etc
2. # vim /usr/local/logstash/etc/hello_search.conf
3. input {
4. stdin {
5. type => "human"
6. }
7. }
8.
9. output {
10. stdout {
11. codec => rubydebug
12. }
13.
14. elasticsearch {
15. host => "10.111.121.22"
16. port => 9300
17. }
18. }
19. # /usr/local/logstash/bin/logstash -f /usr/local/logstash/etc/hello_search.conf
6 安装Kibana
CentOS默认预装了Apache,所以将Kibana的代码直接拷贝到Apache可以访问的目录下即可。
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1. # sudo wget https://download.elasticsearch.org/kibana/kibana/kibana-3.1.2.tar.gz
2. # sudo tar -zxvf kibana-3.1.2.tar.gz
3. # mv kibana-3.1.2 /var/www/html/kibana
修改Kibana的配置文件,把elasticsearch所在行的内容替换成如下:
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1. # vim /var/www/html/kibana/config.js
2. elasticsearch: "http://10.111.121.22:9200",
启动一下HTTP服务:
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1. # service httpd start
修改ElasticSearch的配置文件,追加一行内容,并重启ElasticSearch服务:
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1. # vim /usr/local/elasticsearch/config/elasticsearch.yml
2. http.cors.enabled: true
3. # /usr/local/elasticsearch/bin/service/elasticsearch restart
然后就可以通过浏览器访问Kibana了:
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现在,在之前的Logstash会话中输入任意字符,就可以在Kibana中查看到日志情况。
7 配置Logstash
再次创建Logstash配置文件,这里将HTTP日志和文件系统日志作为输入,输出直接传给ElasticSearch,不再打印在界面上:
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1. # vim /usr/local/logstash/etc/logstash_agent.conf
2.
3. input {
4. file {
5. type => "http.access"
6. path => ["/var/log/httpd/access_log"]
7. }
8.
9. file {
10. type => "http.error"
11. path => ["/var/log/httpd/error_log"]
12. }
13.
14. file {
15. type => "messages"
16. path => ["/var/log/messages"]
17. }
18. }
19.
20. output {
21. elasticsearch {
22. host => "123.206.211.52"
23. port => 9300
24. }
25. }
26. #/usr/local/logstash/bin/logstash -f /usr/local/logstash/etc/logstash_agent.conf &
现在,一个简单的日志分析和监控平台就搭建好了,可以使用Kibana进行查看。
转载于:https://blog.51cto.com/joy1991/1903930