docker - 如何配置 sensu keepalive 以向 slack 发出警报

Question

我想发出一个松弛警报。当客户端未通过保持活动检查时。

做它的过程是什么？我能知道怎么做吗？我正在使用hiroakis/docker-sensu-server泊坞窗图像。

Answer 1

在松弛方面：

在松弛方面，您必须为所需频道创建一个新的传入 webhook。

在感官方面：

您创建一个使用 webhook 的新处理程序。

那么您必须分配此处理程序以用于您在其检查配置文件中所需的检查。

如果您需要一个代理来连接到互联网，请记住将该代理放入处理程序中，或者以更优雅的方式通过配置文件传递它。

例如。你可以使用这个处理程序：

#!/usr/bin/env ruby

# Copyright 2014 Dan Shultz and contributors.
#
# Released under the same terms as Sensu (the MIT license); see LICENSE
# for details.
#
# In order to use this plugin, you must first configure an incoming webhook
# integration in slack. You can create the required webhook by visiting
# https://{your team}.slack.com/services/new/incoming-webhook
#
# After you configure your webhook, you'll need the webhook URL from the integration.

require 'rubygems' if RUBY_VERSION < '1.9.0'
require 'sensu-handler'
require 'json'

class Slack < Sensu::Handler
  option :json_config,
         description: 'Configuration name',
         short: '-j JSONCONFIG',
         long: '--json JSONCONFIG',
         default: 'slack'

  def slack_webhook_url
    get_setting('webhook_url')
  end

  def slack_channel
    get_setting('channel')
  end

  def slack_proxy_addr
    get_setting('proxy_addr')
  end

  def slack_proxy_port
    get_setting('proxy_port')
  end

  def slack_message_prefix
    get_setting('message_prefix')
  end

  def slack_bot_name
    get_setting('bot_name')
  end

  def slack_surround
    get_setting('surround')
  end
  def markdown_enabled
    get_setting('markdown_enabled') || true
  end

  def incident_key
    @event['client']['name'] + '/' + @event['check']['name']
  end

  def get_setting(name)
    settings[config[:json_config]][name]
  end

  def handle
    description = @event['check']['notification'] || build_description
    post_data("*Check*\n#{incident_key}\n\n*Description*\n#{description}")
  end

  def build_description
    [
      @event['check']['output'].strip,
      @event['client']['address'],
      @event['client']['subscriptions'].join(',')
    ].join(' : ')
  end

  def post_data(notice)
    uri = URI(slack_webhook_url)

    if (defined?(slack_proxy_addr)).nil?
      http = Net::HTTP.new(uri.host, uri.port)
    else
      http = Net::HTTP::Proxy(slack_proxy_addr, slack_proxy_port).new(uri.host, uri.port)
    end

    http.use_ssl = true

    begin
      req = Net::HTTP::Post.new("#{uri.path}?#{uri.query}")
      text = slack_surround ? slack_surround + notice + slack_surround : notice
      req.body = payload(text).to_json

      response = http.request(req)
      verify_response(response)
    rescue Exception => e
     puts "An error has ocurred when posting to slack: #{e.message}"
    end
  end

  def verify_response(response)
    case response
    when Net::HTTPSuccess
      true
    else
      fail response.error!
    end
  end

  def payload(notice)
    {
      icon_url: 'http://sensuapp.org/img/sensu_logo_large-c92d73db.png',
      attachments: [{
        text: [slack_message_prefix, notice].compact.join(' '),
        color: color
      }]
    }.tap do |payload|
      payload[:channel] = slack_channel if slack_channel
      payload[:username] = slack_bot_name if slack_bot_name
      payload[:attachments][0][:mrkdwn_in] = %w(text) if markdown_enabled
    end
  end

  def color
    color = {
      0 => '#36a64f',
      1 => '#FFCC00',
      2 => '#FF0000',
      3 => '#6600CC'
    }
    color.fetch(check_status.to_i)
  end

  def check_status
    @event['check']['status']
  end
end

然后将这样的配置文件传递给它

{
  "handlers": {
    "slack": {
      "command": "/etc/sensu/handlers/slack.rb",
      "type": "pipe",
      "filters": [

      ],
      "severities": [
        "ok",
        "critical"
      ]
    }
  }
}

然后还将包括该处理程序要处理的严重性