ELK日志平台是一个完整的日志分析系统，有三个开源工具构建组成，分别是：Elasticsearch、Logstash和Kibana。Elasticsearch用于数据分析和深度搜索；Logstash作用是从其他服务器上传输和转发日志，对其集中管理，进行分析；Kibana则是提供了强大的UI展示，将数据可视化。
安装ELK日志平台
ELK基础环境需要java环境，官网要求5.x版本要大于java8。而且安装方式多样化，支持zip、tar.gz、rpm包、deb包、window环境还有docker环境。根据自己喜好选择吧。
我选择的是yum安装，简单方便，系统要求的话没有辣么严格，官网说yum安装方式不再支持centos5.x系列了，非要用centos5.x就去使用tar.gz包吧，官网有具体方法，不再复述。yum安装方式centos6.x和centos7.x都可以，但是我推荐用centos7.x安装，不知道为啥，感觉centos7.x支持更好，centos6.x装完经常会出问题。
还有一点需要说下就是，ELK各个组件版本要一致，官网要求的！
在一个就是安装顺序，为的是确保每个组件相互调用时都能正常运行：
1、Elasticsearch
- X-Pack for Elasticsearch
Kibana
- X-Pack for Kibana
LogstashBeatsElasticsearch Hadoop
安装Elasticsearch
1、导入Elasticsearch安装包PGP Key
rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
2、创建yum源
[[email protected] ~]# cat >> /etc/yum.repos.d/elasticsearch.repo <<EOF > [elasticsearch-5.x] > name=Elasticsearch repository for 5.x packages > baseurl=https://artifacts.elastic.co/packages/5.x/yum > gpgcheck=1 > gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch > enabled=1 > autorefresh=1 > type=rpm-md > EOF
3、安装、启动Elasticsearch进程并开机启动
[[email protected] ~]$ sudo yum install elasticsearch [[email protected] ~]$ sudo /bin/systemctl daemon-reload [[email protected] ~]$ sudo /bin/systemctl enable elasticsearch.service [[email protected] ~]$ sudo systemctl start elasticsearch.service
4、检查Elasticsearch是否已经启动
查看9200、9300是否已经启动
[[email protected] ~]$ curl http://localhost:9200
{
"name" : "F5Mw8Pp",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "zVEeXtPNTaeH-TKah7Buzw",
"version" : {
"number" : "5.4.0",
"build_hash" : "780f8c4",
"build_date" : "2017-04-28T17:43:27.229Z",
"build_snapshot" : false,
"lucene_version" : "6.5.0"
},
"tagline" : "You Know, for Search"
}
5、配置Elasticsearch
rpm包配置文件在/etc/elasticsearch下面的elasticsearch.yml
vim /etc/elasticsearch/elasticsearch.yml
cluster.name: elasticsearch-test
node.name: node-1
path.data: /var/lib/elasticsearch
path.logs: /var/log/elasticsearch
network.host: 0.0.0.0
[[email protected] ~]$ sudo systemctl restart elasticsearch.service
[[email protected] ~]$ curl http://localhost:9200
{
"name" : "node-1",
"cluster_name" : "elasticsearch-test",
"cluster_uuid" : "zVEeXtPNTaeH-TKah7Buzw",
"version" : {
"number" : "5.4.0",
"build_hash" : "780f8c4",
"build_date" : "2017-04-28T17:43:27.229Z",
"build_snapshot" : false,
"lucene_version" : "6.5.0"
},
"tagline" : "You Know, for Search"
}
6、将/etc/elasticsearch/配置拷贝到/usr/share/elasticsearch/config下面
[[email protected] ~]$ sudo mkdir /usr/local/elasticsearch/config [[email protected] ~]$ sudo ln -sf /etc/elasticsearch/* /usr/local/elasticsearch/config/ [[email protected] ~]$ sudo chown -R elasticsearch:elasticsearch /usr/local/elasticsearch [[email protected] ~]$ sudo systemctl restart elasticsearch.service
注意：这一点好多人不会注意，因为你不修复也不会启动失败，但是就是写不进数据进去，这个坑好久才发现，看下日志会报错，但是却能启动，我也是服了！~
7、装个head插件
这个插件5.X官网不再支持了，插件命令没有了，因为它有自己x-pack插件了，但是我装了x-pack发现着实让人吐血，有安全认证方面的问题，导致elk各种问题出现，目前还没研究明白，时间不充裕。
这个head插件我是直接抄的网上大神制作，略有改动。
7.1、下载并配置nodejs
由于head插件本质上还是一个nodejs的工程，因此需要安装node，使用npm来安装依赖的包。（npm可以理解为maven）
去官网下载nodejs，https://nodejs.org/en/download/
wget https://nodejs.org/dist/v8.1.1/node-v8.1.1-linux-x64.tar.xz tar xf node-v8.1.1-linux-x64.tar.xz mv node-v8.1.1-linux-x64 /usr/local/node chown -R elasticsearch:elasticsearch node/ ln -sf /usr/local/node/bin/node /usr/bin/node ln -sf /usr/local/node/bin/npm /usr/bin/npm
7.2、安装grunt
npm install -g grunt-cli ln -sf /usr/local/node/bin/grunt /usr/bin/grunt cd /var/lib/elasticsearch
7.3、下载、安装并配置head
yum -y install git cd /var/lib/elasticsearch git clone git://github.com/mobz/elasticsearch-head.git chown -R elasticsearch:elasticsearch elasticsearch-head/ cd elasticsearch-head/ npm install
7.4、配置head文件
[[email protected] ~]# cd /var/lib/elasticsearch/elasticsearch-head/
vim Gruntfile.js
connect: {
server: {
options: {
port: 9100,
hostname: "0.0.0.0",
base: ‘.‘,
keepalive: true
}
}
}
[[email protected] elasticsearch-head]# cd _site/
[[email protected] _site]# vim app.js
把localhost修改成你es的服务器地址:
this.base_uri = this.config.base_uri || this.prefs.get("app-base_uri") || "http://10.10.10.10:9200";
7.5、启动head插件
grunt server &
安装Kibana
1、yum安装Kibana
[[email protected] ~]$ sudo yum install kibana
rpm包配置文件在/etc/kibana下面的kibana.yml
/etc/kibana/kibana.yml
2、配置Kibana文件
[[email protected] ~]$ vim /etc/kibana/kibana.yml server.port: 5601 server.host: "0.0.0.0" elasticsearch.url: "http://localhost:9200"
3、启动并设置开机启动
[[email protected] ~]$ sudo systemctl enable kibana.service Created symlink from /etc/systemd/system/multi-user.target.wants/kibana.service to /etc/systemd/system/kibana.service [[email protected] ~]$ sudo systemctl start kibana.service
安装Logstash
1、yum安装Logstash
[[email protected] ~]$ sudo yum -y install logstash [[email protected] ~]$ sudo systemctl start logstash.service [[email protected] ~]$ sudo ln -s /usr/share/logstash/bin/logstash /usr/bin/logstash [[email protected] ~]$ sudo -u logstash sh -c ‘mkdir -pv /usr/share/logstash/config‘ [[email protected] ~]$ sudo -u logstash sh -c ‘ln -s /etc/logstash/* /usr/share/logstash/config/‘
2、测试Logstash是否能正常运行
[[email protected] ~]$ sudo logstash -e ‘input {stdin{}}output { stdout{}}‘
hello world
2017-06-02T07:14:13.130Z localhost hello world
[[email protected] ~]$ sudo logstash -e ‘input {stdin{}}output {
stdout{codec=>rubydebug}}‘
hello world
The stdin plugin is now waiting for input:
{
"@timestamp" => 2017-06-02T07:17:44.053Z,
"@version" => "1",
"host" => "localhost",
"message" => "hello world"
}
3、写个测试文件，测试一下es是否能够接受数据
[[email protected] ~]$ vim /etc/logstash/conf.d/test.conf
input{
stdin{}
}
output{
elaticsearch{
hosts => "127.0.0.1:9200"
index => "test-messages-%{+YYYY.MM.dd}"
}
}
[[email protected] ~]$ logstash -f /etc/logstash/conf.d/test.conf -t
Sending Logstash‘s logs to /var/log/logstash which is now configured via log4j2.properties
Configuration OK
[[email protected] ~]$ logstash -f /etc/logstash/conf.d/test.conf Sending Logstash‘s logs to /var/log/logstash which is now configured via log4j2.properties The stdin plugin is now waiting for input: hello world this is test message study logstash 这是es显示的索引内容了
4、Kibana里添加该索引（测试），只要es里面能产生索引，Kibana就能加在上去
