ELS多种方式集群部署

做elastic stack集群部署
主机1：192.168.31.200 kibana
主机2：192.168.31.201
主机3：192.168.31.203
首先去官网下载对应的包，这里我们选择rpm安装
https://www.elastic.co/downloads

    ElasticSearch 5的程序环境：
        配置文件：
            /etc/elasticsearch/elasticsearch.yml
            /etc/elasticsearch/jvm.options
            /etc/elasticsearch/log4j2.properties
        Unit File：elasticsearch.service
        程序文件：
            /usr/share/elasticsearch/bin/elasticsearch
            /usr/share/elasticsearch/bin/elasticsearch-keystore：
            /usr/share/elasticsearch/bin/elasticsearch-plugin：管理插件程序

编辑配置文件

vim /etc/elasticsearch/elasticsearch.yml
cluster.name: myels
node.name: node1
path.data: /els/data
path.logs: /els/log
network.host: 192.168.31.200
discovery.zen.ping.unicast.hosts: ["node1", "node2","node3"]
discovery.zen.minimum_master_nodes: 2

vim vim /etc/elasticsearch/jvm.options
-Xms2g
-Xmx2g
#初始化分给它2g

然后创建对应的目录

mkdir -pv /els/{data,log}
chown  -R elasticsearch.elasticsearch /els

安装完成后可以通过curl http://192.168.31.200:9200/_cat来查看状态

curl http://192.168.31.200:9200/_cat/nodes?h=name,ip,port,uptime,jdk
node2 192.168.31.201 9300 26.5m 1.8.0_131
node3 192.168.31.203 9300  7.1m 1.8.0_131
node1 192.168.31.200 9300 34.5m 1.8.0_131

查看插件

/usr/share/elasticsearch/bin/elasticsearch-plugin list

5版本以后的插件可以作为一个独立的服务运行，这里我们去github上下载然后安装head。

https://github.com/mobz/elasticsearch-head.git

create a fork of elasticsearch-head on github
clone your fork to your machine
cd elasticsearch-head
npm install # downloads node dev dependencies
grunt dev # builds the distribution files, then watches the src directory for changes (if you have an warning like "Warning: Task “clean” failed. Use —force to continue.", well use —force ;) )

直接npm run start会占据前台，这里我们可以使用nohup npm run start &运行于后台

然后需要修改配置文件

http.cors.enabled: true
http.cors.allow-orign: "*"

自己上传一个文档测试，注意索引会自行创建

curl -XPUT 'node1:9200/students/major/1?pretty' -H 'Content-Type: application/json' -d '
{"name": "jerry", "age": 17, "course": "Pixie jianfa"}'

查看索引
curl 'node1:9200/_cat/indices'
curl -XGET 'node1:9200/students/_search?pretty'
curl -XGET 'node1:9200/_search/?q=course:shiba&pretty'

安装kibana界面

rpm -ivh kibana-6.5.4-x86_64.rpm
vim /etc/kibana/kibana.yml

server.host: "192.168.31.200"
server.port: 5601
server.name: "node1"
elasticsearch.url: "http://node1:9200"
直接启动即可
systemctl start kibana

我们再新添一台nginx主机，然后在上面安装filebeats和logstash软件。

rpm -ivh filebeat-6.5.4-x86_64.rpm
vim /etc/filebeat/filebeat.yml

hosts: ["node1:9200", "node2:9200"]

image.png

可以看到filebeat已经将数据推送到elasticsesarch上了
那么kibana上也可对数据进行处理了

image.png

但是filebeat处理数据的能力没有logstash好，所以我们再增加一个logstash节点，这里我们直接使用nginx主机
注意：logstash如果不使用logstash用户可能会产生一些权
限冲突的问题。
logstash的各插件配置官方文档https://www.elastic.co/guide/en/logstash/current/index.html

rpm -ivh logstash-6.5.4.rpm 
vim /etc/logstash/conf.d/test.conf

input {
        stdin{}
}

output {
        stdout { codec => rubydebug }
}

检测语法,去掉-t就可以直接运行了
/usr/share/logstash/bin/logstash --path.settings /etc/logstash/ -t -f /etc/logstash/conf.d/test.conf             
Sending Logstash logs to /var/log/logstash which is now configured via log4j2.properties

然后我们就可以在终端直接输入数据了

hello logstash
{
      "@version" => "1",
    "@timestamp" => 2019-01-15T12:35:51.470Z,
          "host" => "node4.lvqing.com",
       "message" => "hello logstash"
}

接下来我们配置logstash从beats读取数据,当然输出还是到屏幕上，稍后我们再进行配置输出到elasticsearch上

input {
        beats{
                host => '0.0.0.0'
                port => 5044
        }
}
然后我们需要修改filebeats输出的对象为logstash
output.logstash:
 hosts: ["192.168.31.204:5044"]

再启动logstash
/usr/share/logstash/bin/logstash --path.settings /etc/logstash/ -f /etc/logstash/conf.d/ceshi.conf

logstash就能收集到filebeat传过来的日志了,并且是已经帮我们切好片的

{
    "prospector" => {
        "type" => "log"
    },
         "input" => {
        "type" => "log"
    },
          "host" => {
                   "os" => {
             "version" => "7 (Core)",
              "family" => "redhat",
            "platform" => "centos",
            "codename" => "Core"
        },
                 "name" => "node4.lvqing.com",
                   "id" => "98b754e309454154b76d44862ecc843e",
        "containerized" => true,
         "architecture" => "x86_64"
    },
    "@timestamp" => 2019-01-15T13:51:36.416Z,
          "beat" => {
            "name" => "node4.lvqing.com",
         "version" => "6.5.4",
        "hostname" => "node4.lvqing.com"
    },
        "source" => "/var/log/nginx/access.log",
          "tags" => [
        [0] "beats_input_codec_plain_applied"
    ],
      "@version" => "1",
        "offset" => 2527,
       "message" => "192.168.31.242 - - [15/Jan/2019:21:51:30 +0800] \"GET /dsa HTTP/1.1\" 404 3650 \"-\" \"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36\" \"-\""
}

然后logstash相对于filebea强大的地方就是他的过滤器，这里我们介绍使用grok插件,它已经事先定义好了正则，我们在使用的时候直接调用就可以了。

input {
                beats{
                host => '0.0.0.0'
                port => 5044
        }

}

filter {
        grok {
                match => {
                 "message" => "%{IPORHOST:clientip} %{USER:ident} %{USER:auth} \[%{HTTPDATE:datetime}\] \"%{WORD:verb} %{URIPATHPARAM:request} HTTP/%{NUMBER:httpversion}\" %{NUMBER:http_status_code} %{NUMBER:bytes} \"(?<http_referer>\S+)\" \"(?<http_user_agent>\S+)\" \"(?<http_x_forwarded_for>\S+)\""
                }
        }
}

output {
        elasticsearch {
                hosts => ["192.168.31.200:9200", "192.168.31.201:9200", "192.168.31.203:9200"]
                index => "logstatsh-ngxaccesslog-%{+YYYY.MM.dd}"
        }
}

image.png

可以看到我们自己定义得filed已经被切出来了，但是message还保留着我们可以将它隐藏起来。remove_field => "message"

如果规模再大一些，elasticsearch处理能力跟不上，我们还可以将logstash导出到redis当中。由redis统一发送给elasticsearch。这里有人可能会产生疑问，那能不能直接由filebeat将数据发送给redis呢？实际上filebeat自己也有许多模板可以给日志加标签，直接由filebeat发送给redis
参考文档地址https://www.elastic.co/guide/en/beats/filebeat/6.4/redis-output.html

修改redis配置文件
bind 0.0.0.0
requirepass lvqing
systemctl start redis

 修改filebeat配置文件，添加一个配置段
output.redis:
  hosts: ["localhost"]
  password: "lvqing"
  key: "filebeat" #这里是在redis中生成一个filebeat列表，如果由多个filebeat都应该发往同一个key
  db: 0
  timeout: 5

成功导入到redis了

127.0.0.1:6379> LINDEX filebeat 0
"{\"@timestamp\":\"2019-01-16T16:04:31.749Z\",\"@metadata\":{\"beat\":\"filebeat\",\"type\":\"doc\",\"version\":\"6.5.4\"},\"prospector\":{\"type\":\"log\"},\"beat\":
{\"name\":\"node4.lvqing.com\",\"hostname\":\"node4.lvqing.com\",\"version\":\"6.5.4\"},\"host\":
{\"name\":\"node4.lvqing.com\",\"architecture\":\"x86_64\",\"os\":{\"platform\":\"centos\",\"version\":\"7 (Core)\",\"family\":\"redhat\",\"codename\"
:\"Core\"},\"id\":\"98b754e309454154b76d44862ecc843e\",\"containerized\":true},\"source\":\"/var/log/nginx/access.log\",\"offset\":6258,
\"message\":\"192.168.31.201 - - [17/Jan/2019:00:04:30 +0800] \\\"GET /11dasd HTTP/1.1\\\" 404 3650 \\\"-\\\" \\\"curl/7.29.0\\\" \\\"-\\\"\",\"input\":{\"type\":\"log\"}}

然后我们要让logstash从redis中读取数据再送到elastic中
参考文档https://www.elastic.co/guide/en/logstash/6.4/plugins-inputs-redis.html

input {
        redis {
                key => "filebeat"
                data_type => "list"
                password => "lvqing"
        }
}

实验完成，kibana可以看到拉取过来得数据。

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