Here is the full configurations:

# Check both databases prod1 and prod2 and alert if any of them has less than 10% disk space left.
alert:
  id: db-disk-space
  description: Check that the DB has enough disk space
  steps:
    - name: db-prod1-no-space
      provider:
        type: mock
        config: "{{ providers.db-server-mock }}"
        with:
          command: df -h | grep /dev/disk3s1s1 | awk '{ print $5}' # Check the disk space
          command_output: 91% # Mock
    - name: db-prod2-no-space
      provider:
        type: mock
        config: "{{ providers.db-server-mock }}"
        with:
          command: df -h | grep /dev/disk3s1s1 | awk '{ print $5}' # Check the disk space
          command_output: 94.5% # Mock
  actions:
    - name: trigger-telegram1
      use: @trigger-telegrame
      provider: 
        config:
          authentication:
            bot_token: "{{ env.TELEGRAM_BOT_TOKEN1 }}"
        with:
          chat_id: "{{ env.TELEGRAM_CHAT_ID1 }}"
    - name: trigger-telegram2
      use: @trigger-telegrame
      provider: 
        config:
          authentication:
            bot_token: "{{ env.TELEGRAM_BOT_TOKEN2 }}"
        with:
          chat_id: "{{ env.TELEGRAM_CHAT_ID2 }}"

actions:
  - name: trigger-telegram
    use: @trigger-telegram
    condition:
      - type: threshold
        value: "{{ steps.db-prod1-no-space.results }}"
        compare_to: 90% # Trigger if more than 90% full
        alias: A
      - type: threshold
        value: "{{ steps.db-prod2-no-space.results }}"
        compare_to: 90% # Trigger if more than 90% full
        alias: B
    # trigger the action if any of the conditions are met:
    if: "{{ A }} or {{ B }}"
    provider:
      type: telegram
      with:
        message: Keep Alert Test

providers:
  db-server-mock:
    description: Paper DB Server
    authentication:

​
Breakdown

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Steps

In this example we can see two steps:

  • db-prod1-no-space - checks db space of db prod1
  • db-prod2-no-space - checkd db space of db prod2

​
Conditions

The action has two threshold conditions:

condition:
    - type: threshold
      value:  "{{ steps.this.results }}"
      compare_to: 90% # Trigger if more than 90% full

But now we’ve added an alias to each condition, so it’ll be easier to check it in the action itself.

​
Action

The action template is defined as.

actions:
  - name: trigger-telegram
    use: @trigger-telegram
    condition:
      - type: threshold
        value: "{{ steps.db-prod1-no-space.results }}"
        compare_to: 90% # Trigger if more than 90% full
        alias: A
      - type: threshold
        value: "{{ steps.db-prod2-no-space.results }}"
        compare_to: 90% # Trigger if more than 90% full
        alias: B
    # trigger the action if any of the conditions are met:
    if: "{{ A }} or {{ B }}"
    provider:
      type: telegram
      with:
        message: Keep Alert Test

The action uses the if statement to alert if one of the databases has less than 10% disk space left. Note that we don’t define any telegram chat_id and bot_token here because we want to define two separate telegram credentials for the two channels.

The credentials are defined in actions definitions within the alert configuration. Note that we declare use: @trigger-telegram to use the defined action template.

alert:
  ...
  actions:
    - name: trigger-telegram1
      use: @trigger-telegram
      provider: 
        config:
          authentication:
            bot_token: "{{ env.TELEGRAM_BOT_TOKEN1 }}"
        with:
          chat_id: "{{ env.TELEGRAM_CHAT_ID1 }}"
    - name: trigger-telegram2
      use: @trigger-telegram
      provider: 
        config:
          authentication:
            bot_token: "{{ env.TELEGRAM_BOT_TOKEN2 }}"
        with:
          chat_id: "{{ env.TELEGRAM_CHAT_ID2 }}"
Multi-Step AlertState