• ELK+FileBeat 开源日志分析系统搭建-Centos7.8


    本文所用到的tar包下载地址(不包含JDK、elasticsearch-head)

    ELK:也就是elasticsearch  logstash  kibana三款开源软件的简称

    FileBeat:一个轻量级开源日志文件数据收集器

    也是上班闲着没事研究一下了。网上的文档也看了多,emmm好多文档有些地方写的不够详细,自己也踩了很多坑,整理了下记录来,方便下次使用

    1.修改一些系统参数,并创建一个用户,用于elasticsearch的启动

    vim /etc/sysctl.conf
    vm.max_map_count = 262144

    如果不加入这个参数在启动的时候就会报错,提示如下

    max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

    1.1修改sysctl.conf配置用户打开最大文件数

    *               soft    nproc       655350
    *               hard    nproc       655350
    *               soft    nofile       655350
    *               hard    nofile       655350
    elk soft memlock unlimited
    elk hard memlock unlimited

    注意:后面两行必须加上,否则会出现如下错误提示,上面四行不加同样会报错,具体错误忘记了

    memory locking requested for elasticsearch process but memory is not locked

    添加完成后运行如下命令

    sysctl -p
    ulimit -SHn 65535

    1.3配置java环境,由于我这里用的elasticsearch7.3.0的版本,所以jdk必须要在11以上,否则无法分配内存

    vim /etc/profile.d/jdk.sh
    export JAVA_HOME=/usr/local/jdk-11
    export PATH=.:$PATH:$JAVA_HOME/bin
    export CLASSPATH=$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
    
    [root@oracle ~]# source /etc/profile.d/jdk.sh
    [root@oracle ~]# java -version
    java version "11" 2018-09-25
    Java(TM) SE Runtime Environment 18.9 (build 11+28)
    Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11+28, mixed mode)

    2.安装elasticsearch,可用rpm或tar包进行安装,根据自己情况选择,我这里用的tar包

    tar xf elasticsearch-7.3.0-linux-x86_64.tar.gz
    mv elasticsearch-7.3.0-linux-x86_64 ../elasticsearch-7.3.0
    
    #修改elasticsearch配置文件,具体参数如下,其中http参数是为了跨域测试使用,如果不加访问时会被拦截
    cluster.name: my-elk
    node.name: node1
    path.data: /usr/local/elasticsearch-7.3.0/data
    path.data: /usr/local/elasticsearch-7.3.0/logs
    bootstrap.memory_lock: true
    network.host: 0.0.0.0
    http.port: 9200
    discovery.seed_hosts: ["121.37.158.40"]
    cluster.initial_master_nodes: ["node1"]
    http.cors.enabled: true
    http.cors.allow-origin: "*"
    xpack.license.self_generated.type: basic
    xpack.security.enabled: false
    node.data: true
    node.ingest: true
    node.master: true

    2.1创建用户,在这个/usr/local/elasticsearch-7.3.0目录下执行以下命令

    groupadd elk
    useradd -g elk elk
    chown -R elk:elk .

    2.2启动并测试elasticsearch

    #启动并测试elasticsearch
    ./bin/elasticsearch
    curl http://localhost:9200/
    #结果如下
    {
      "name" : "node1",
      "cluster_name" : "my-elk",
      "cluster_uuid" : "yjN4KxYJQwG5-V_4cBOlxA",
      "version" : {
        "number" : "7.3.0",
        "build_flavor" : "default",
        "build_type" : "tar",
        "build_hash" : "de777fa",
        "build_date" : "2019-07-24T18:30:11.767338Z",
        "build_snapshot" : false,
        "lucene_version" : "8.1.0",
        "minimum_wire_compatibility_version" : "6.8.0",
        "minimum_index_compatibility_version" : "6.0.0-beta1"
      },
      "tagline" : "You Know, for Search"
    }

    3.安装elasticsearch-head

    cd /usr/local/
    #安装依赖包
    yum install git nodejs openssl-devel screen -y
    #克隆 elasticsearch-head项目
    git clone  https://github.com/mobz/elasticsearch-head.git
    #完成后执行如下命令,时间较长请耐心等待
    npm install phantomjs-prebuilt --ignore-scripts
    npm install

    安装完成后利用screen,ctrl+a ctlr +d 命令在后台将elasticsearch-head运行起来,

    screen
    npm run start

    4.安装Kibana

    tar xf kibana-7.3.0-linux-x86_64.tar.gz
    mv kibana-7.3.0-linux-x86_64 ../kibana-7.3.0

    修改kibana配置文件,如果你将elasticsearch、kibana部署在不同的服务器上,请将localhost改为服务器ip。另外kibana的版本不能比elasticsearch版本高,否则启动的时候会报错

    vim config/kibana.yml
    server.port: 8080
    server.host: "0.0.0.0"
    elasticsearch.hosts: ["http://localhost:9200"]
    i18n.locale: "zh-CN"

    启动kibana,并查看端口是否被监听,端口被监听则表示成功。由于我是用root用户运行的,所以需要加--allow-root这个参数

    ./bin/kibana --allow-root
    lsof -i:8080

    5.安装logstash,logstash同样需要java环境,前面我们已经配置过了,这里就不在赘述了

    tar xf logstash-7.9.3.tar.gz
    mv logstash-7.9.3 ../
    #将logstash加入到变量中
    vim ~/.bash_profile
    export PATH=$PATH:$HOME/bin:$M2_HOME/bin:/u01/mysql/bin:/usr/local/logstash-7.9.3/bin
    source ~/.bash_profile
    #验证logstash,只要出现 Successfully startfilebeat-7.9.3-linux-x86_64.tar.gzed Logstash API endpoint {:port=>9600} 就表示启动成功。
    logstash -e 'input { stdin {} } output { stdout{} }'

    6.安装nginx和filebeat,nginx就用yum装的,测试使用

    yum install nginx -y
    tar xf filebeat-7.9.3-linux-x86_64.tar.gz
    mv filebeat-7.9.3-linux-x86_64 ../filebeat-7.9.3

    6.1修改filebeat主配置文件

    vim /etc/filebeat/filebeat.yml
    #注释掉输出到 elasticsearch
    #output.elasticsearch:
    # Array of hosts to connect to.
    #hosts: ["localhost:9200"]
    开启输出到 logstash
    output.logstash:
      # The Logstash hosts
      hosts: ["192.168.11.16:5044"]   --主机填写logstash所在主机

    6.2修改 nginx 模块配置文件

    vim /etc/filebeat/modules.d/nginx.yml
    # Module: nginx
    # Docs: https://www.elastic.co/guide/en/beats/filebeat/7.9/filebeat-module-nginx.html
    
    - module: nginx
      # Access logs
      access:
        enabled: true
    
        # Set custom paths for the log files. If left empty,
        # Filebeat will choose the paths depending on your OS.
        var.paths: ["/var/log/nginx/access.log"]
    
      # Error logs
      error:
        enabled: true
    
        # Set custom paths for the log files. If left empty,
        # Filebeat will choose the paths depending on your OS.
        var.paths: ["/var/log/nginx/error.log"]

    启动filebeat,注意看日志,如果有错误,请及时排查问题

    ./bin/filebeat -e

    7.编写测试配置文件,放在logstash配置文件目录下

    vim nginx.conf
    input {
        beats {
            ports => "5044"
        }
    }
    
    
    #output {
    #    stdout {
    #        index => "rubydebug"
    #    }
    #}
    
    
    output {
        elasticsearch {
            hosts => ["127.0.0.1:9200"]
            index => "nginx-%{+YYYY.MM.dd}"
        }
    }

    通过配置文件启动logstash

    #修改配置文件自动重载模式
    logstash -f nginx.conf --config.reload.automatic

    8.kibana部分效果图

     9.elasticsearch-head效果图

     后续就是编写获取日志文件的的规则。

    资料来源

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  • 原文地址:https://www.cnblogs.com/Roobbin/p/13936943.html
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