vim /etc/filebeat/filebeat.yml
filebeat.inputs:
- type: log
  enabled: true
  paths:
    - /var/log/nginx/www_access.log
  json.keys_under_root: true
  json.overwrite_keys: true
  tags: ["www"]
- type: log
  enabled: true
  paths:
    - /var/log/nginx/bbs_access.log
  json.keys_under_root: true
  json.overwrite_keys: true
  tags: ["bbs"]
- type: log
  enabled: true
  paths:
    - /var/log/nginx/blog_access.log
  json.keys_under_root: true
  json.overwrite_keys: true
  tags: ["blog"]
- type: log
  enabled: true
  paths:
    - /var/log/nginx/error.log
  tags: ["error"]
output.elasticsearch:
  hosts: ["192.168.81.210:9200"]
  indices:
    - index: "nginx-www-access-%{+yyyy.MM.dd}"
      when.contains:
        tags: "www"
    - index: "nginx-bbs-access-%{+yyyy.MM.dd}"
      when.contains:
        tags: "bbs"
    - index: "nginx-blog-access-%{+yyyy.MM.dd}"
      when.contains:
        tags: "blog"
    - index: "nginx-error-%{+yyyy.MM.dd}"
      when.contains:
        tags: "error"
systemctl restart filebeat