elastalert 配置post告警方式（备忘）

最近在做把elk告警日志发送到kinesis 流，供后续数据分析处理使用。。。。。。。。

基于尽量不修改elastalert ，把修改工作放到接收端服务的原则。计划把elk的告警数据通过远程api的接口的形式发送到接收端，然后由接收端处理接收到的数据，并传送保存到kinesis 中。

从网上搜索了下elastalert 相关告警配置，搜到的文章大多以邮件告警为主，从官网扒拉了下资源，简单实现方式如下：

1、elastalert 配置（可以本地测试）

1）启动配置config.yaml

rules_folder: rules
run_every:
  minutes: 1

buffer_time:
  minutes: 5
es_host: es_endpoint
es_port: 9200
es_username: username
es_password: password

use_ssl: False
verify_certs: False
writeback_index: elastalert_status
alert_time_limit:
  hours: 2

2）告警规则kinesis.yaml

name: alertfortest
type: frequency
num_events: 1
timeframe:
  minutes: 1

index: debug-*
filter:
- terms:
    fields.app: ["app1","app2"]
- query:
    query_string:
      default_field: "message"
      query: "error NOT INFO"

alert:
  - "email"
  - "post"
  
http_post_url: "http://localhost:8000/elastalert/"
http_post_static_payload:
    rule_name: alertfortest
 
smtp_host: "smtp.163.com"
smtp_port: 25
from_addr: "elastalert@163.com"
smtp_auth_file: /tmp/smtp_auth.yaml
email:
- "youremail@qq.com"

2、数据接收端

def elastalert2kinesis(request):
    if request.method == 'GET':return HttpResponse(status=400)
    elif request.method == 'POST':
        data_dict = {
            "region":"",
            "env":"","service":"",
            "ip":"","endpoint":"",
            "metric":"",
            "value":"",
            "timestamp":0,
            "dataSource":"",
            "status":""
        }
        alertbody = json.loads(bytes.decode(request.body))

        endpoint_list = alertbody['beat']['hostname'].split('-')
        data_dict['env'] = endpoint_list[0]
        data_dict['region'] = endpoint_list[1]
        data_dict['service'] = "-".join(endpoint_list[2:-1])
        data_dict['ip'] = endpoint_list[-1]
        data_dict['endpoint'] = alertbody['beat']['hostname']
        data_dict['dataSource'] = "elk"
        data_dict['metric'] = alertbody['source']
        data_dict['value'] = alertbody['message']
        data_dict['timestamp'] = utc_to_local(alertbody['@timestamp'].split('.')[0]+"Z")

        Stream().put_to_stream(data_dict['service'],**data_dict)
        print("data_dict.....................:",data_dict)


    return HttpResponse(status=200)