# Copyright 2023 PingCAP, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

groups:
- name: alert.rules
  rules:
  - alert: TiFlash_server_is_down
    expr: probe_success{group="tiflash"} == 0
    for: 1m
    labels:
      env: ENV_LABELS_ENV
      level: emergency
      expr: probe_success{group="tiflash"} == 0
    annotations:
      description: 'cluster: ENV_LABELS_ENV, instance: {{ $labels.instance }}, values:{{ $value }}'
      value: '{{ $value }}'
      summary: TiFlash server is down

  - alert: TiFlash_schema_apply_duration
    expr: histogram_quantile(0.99, sum(rate(tiflash_schema_apply_duration_seconds_bucket[1m])) BY (le, instance)) > 20
    for: 1m
    labels:
      env: ENV_LABELS_ENV
      level: emergency
      expr:  histogram_quantile(0.99, sum(rate(tiflash_schema_apply_duration_seconds_bucket[1m])) BY (le, instance)) > 20
    annotations:
      description: 'cluster: ENV_LABELS_ENV, instance: {{ $labels.instance }}, values:{{ $value }}'
      value: '{{ $value }}'
      summary: TiFlash schema apply duration 99th percentile is above 20s

  - alert: TiFlash_raft_read_index_duration
    expr: histogram_quantile(0.99, sum(rate(tiflash_raft_read_index_duration_seconds_bucket[1m])) BY (le, instance)) > 3
    for: 1m
    labels:
      env: ENV_LABELS_ENV
      level: critical
      expr:  histogram_quantile(0.99, sum(rate(tiflash_raft_read_index_duration_seconds_bucket[1m])) BY (le, instance)) > 3
    annotations:
      description: 'cluster: ENV_LABELS_ENV, instance: {{ $labels.instance }}, values:{{ $value }}'
      value: '{{ $value }}'
      summary: TiFlash raft read index duration 99th percentile is above 3s

  - alert: TiFlash_raft_wait_index_duration
    expr: histogram_quantile(0.99, sum(rate(tiflash_raft_wait_index_duration_seconds_bucket[1m])) BY (le, instance)) > 2
    for: 1m
    labels:
      env: ENV_LABELS_ENV
      level: critical
      expr:  histogram_quantile(0.99, sum(rate(tiflash_raft_wait_index_duration_seconds_bucket[1m])) BY (le, instance)) > 2
    annotations:
      description: 'cluster: ENV_LABELS_ENV, instance: {{ $labels.instance }}, values:{{ $value }}'
      value: '{{ $value }}'
      summary: TiFlash raft wait index duration 99th percentile is above 2s