查看“Filebeat 采集 nginx日志”的源代码

nginx 日志格式规范：
将日志配置组合添加至nginx主配置文件；

log_format  eslog  '$remote_addr - $remote_user [$time_local] "$request" '
    '$status $body_bytes_sent "$http_referer" '
    '"$http_user_agent" "$http_x_forwarded_for"';
ES集群安装插件
集群收集nginx日志需要安装 ingest-user-agent ，ingest-geoip ，安装完成之后需要重启es 服务，否则数据无法正常录入es集群。

/usr/share/elasticsearch/bin/elasticsearch-plugin install ingest-user-agent
/usr/share/elasticsearch/bin/elasticsearch-plugin install ingest-geoip
/usr/share/elasticsearch/bin/elasticsearch-plugin list
升级java至1.8
yum install java-1.8 -y
安装filebeat
导入key
rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
创建repo 文件
more lostash.repo

[elastic-6.x] name=Elastic repository for 6.x packages baseurl=https://artifacts.elastic.co/packages/6.x/yum gpgcheck=1 gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch enabled=1 autorefresh=1 type=rpm-md

安装filebeat
yum install filebeat -y
修改filebeat主配置文件
more /etc/filebeat/filebeat.yml
filebeat.config:
prospectors:
path: ${path.config}/prospectors.d/.yml
reload.enabled: false
modules:
path: /etc/filebeat/modules.d/.yml
reload.enabled: false
output.elasticsearch:
hosts: ['10.2.3.30:9200']
setup.kibana:
host: "10.2.3.13:5601"
配置filebeat nginx 模块
Access 日志：/data/nginxlog/eslog/es-access.*
Error 日志：/data/nginxlog/eslog/es-error.*
more /etc/filebeat/modules.d/nginx.yml 
- 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: ["/data/nginxlog/eslog/es-access.*"]
  # 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: ["/data/nginxlog/eslog/es-error.*"]
添加启动

systemctl enable filebeat
开启nginx 模块

cd /etc/filebeat
filebeat modules enable nginx
filebeat modules list
初始化环境 此操作会自动导入filebeat模板和nginx dashboard 到es 集群：

Set up the initial environment:
Loaded index template
Loading dashboards (Kibana must be running and reachable)
Loaded dashboards
Loaded machine learning job configurations
./filebeat setup -e
启动服务

systemctl start filebeat
启动服务报错 内容如下：

Exiting: Error importing Kibana dashboards: fail to import the dashboards in Kibana: Error importing directory /usr/share/filebeat/kibana: Failed to import index-pattern: Failed to load directory /usr/share/filebeat/kibana/6/index-pattern:
  error loading /usr/share/filebeat/kibana/6/index-pattern/filebeat.json: returned 400 to import file: <nil>. Response: {"statusCode":400,"error":"Bad Request","message":"Request Timeout after 30000ms"}
2018-10-31T16:35:45.659+0900    INFO    kibana/client.go:113    Kibana url: http://10.2.3.13:5601
2018-10-31T16:37:15.664+0900    ERROR   instance/beat.go:743    Exiting: Error importing Kibana dashboards: fail to import the dashboards in Kibana: Error importing directory /usr/share/filebeat/kibana: Failed to import index-pattern: Failed to load directory /usr/share/filebeat/kibana/6/index-pattern:
  error loading /usr/share/filebeat/kibana/6/index-pattern/filebeat.json: fail to execute the HTTP POST request: Post http://10.2.3.13:5601/api/kibana/dashboards/import?force=true: net/http: request canceled (Client.Timeout exceeded while awaiting headers). Response:
处理办法：

登陆kibana 进入Dev tools 删除
删除旧模板
    #DELETE _template/filebeat-6.X.X 
删除旧数据
    #DELETE filebeat-6.4.2-*
重新导入模板：
cd /etc/filebeat/
filebeat setup
Loaded index template
Loading dashboards (Kibana must be running and reachable)
Loaded dashboards
Loaded machine learning job configurations
重启服务：
systemctl restart filebeat