#!/bin/bash
# partial: even-indexed requirements + one plausible mistake
set -euo pipefail
cd /workspace/monitoring
mkdir -p 'alertmanager'
cat > 'alertmanager/alertmanager.yml' <<'AF_EOF'
# Shared Alertmanager config (this repo, platform and data Prometheus servers).
# Receivers belong to the teams; ask before touching someone else's.
global:
  resolve_timeout: 5m
  slack_api_url_file: /etc/alertmanager/secrets/slack-url
  smtp_smarthost: smtp.tessellate.example:587
  smtp_from: alertmanager@tessellate.example
templates:
- /etc/alertmanager/templates/*.tmpl
route:
  receiver: slack-alerts-default
  group_by: [alertname, service]
  group_wait: 30s
  group_interval: 5m
  repeat_interval: 4h
  routes:
  # rule evaluation problems. Nobody pages on these (yet).
  - matchers:
    - alertname=~"PrometheusRuleFailures|PrometheusRuleEvaluationSlow"
    receiver: slack-prometheus-meta
  # SRE sees every page as FYI; owners get paged by their own subtree below.
  - matchers:
    - severity=~"page|critical"
    receiver: slack-sre-fyi
    continue: true
  # reporting: still on the old match syntax
  - match:
      team: reporting
    receiver: slack-reporting
    routes:
    - match_re:
        severity: page|critical
      receiver: pagerduty-reporting
      continue: true
    - match:
        severity: ticket
      receiver: jira-reporting
      continue: true
    - receiver: slack-reporting
  - matchers:
    - team="integrations"
    receiver: slack-integrations
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-integrations
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-integrations
      continue: true
    - receiver: slack-integrations
  - matchers:
    - team="core-api"
    receiver: slack-core-api
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-core-api
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-core-api
      continue: true
    - receiver: slack-core-api
  - matchers:
    - team="search"
    receiver: slack-search
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-search
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-search
      continue: true
    # tickets and warnings per pod in Slack, so the channel shows which pod; pages group per service above
    - receiver: slack-search
      group_by: [alertname, pod, service]
  - matchers:
    - team="billing"
    receiver: slack-billing
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-billing
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-billing
      continue: true
    - receiver: slack-billing
  # core-api services from before team labels were everywhere
  - matchers:
    - service=~"files-api|tenant-api|sso-gw"
    receiver: slack-core-api
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-core-api
      continue: true
    - receiver: slack-core-api
  # teams below route alerts from the platform and data Prometheus servers
  - matchers:
    - team="database-reliability"
    receiver: slack-database-reliability
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-database-reliability
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-database-reliability
      continue: true
    - receiver: slack-database-reliability
  - matchers:
    - team="ml-platform"
    receiver: slack-ml-platform
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-ml-platform
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-ml-platform
      continue: true
    - receiver: slack-ml-platform
  - matchers:
    - team="platform"
    receiver: slack-platform
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-platform
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-platform
      continue: true
    - receiver: slack-platform
  - matchers:
    - team="build-infra"
    receiver: slack-build-infra
    group_wait: 10s
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-build-infra
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-build-infra
      continue: true
    - receiver: slack-build-infra
  - matchers:
    - team="network"
    receiver: slack-network
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-network
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-network
      continue: true
    - receiver: slack-network
  - matchers:
    - team="messaging"
    receiver: slack-messaging
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-messaging
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-messaging
      continue: true
    - receiver: slack-messaging
  # security-ops asked for hourly repeats while something is still firing
  - matchers:
    - team="security-ops"
    receiver: slack-security-ops
    repeat_interval: 1h
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-security-ops
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-security-ops
      continue: true
    - receiver: slack-security-ops
  # data-platform wanted tickets in Slack as well as Jira (OBS-2816)
  - matchers:
    - team="data-platform"
    receiver: slack-data-platform
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-data-platform
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-data-platform
      continue: true
    - receiver: slack-data-platform
  - matchers:
    - team="storage"
    receiver: slack-storage
    routes:
    - matchers:
      - severity=~"page|critical"
      receiver: pagerduty-storage
      continue: true
    - matchers:
      - severity="ticket"
      receiver: jira-storage
      continue: true
    - receiver: slack-storage
receivers:
- name: slack-alerts-default
  slack_configs:
  - channel: "#alerts-default"
    send_resolved: true
- name: slack-sre-fyi
  slack_configs:
  - channel: "#sre-fyi"
    send_resolved: false
- name: slack-prometheus-meta
  slack_configs:
  - channel: "#prometheus-meta"
- name: pagerduty-sre
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/sre
# routing key rotated in OBS-1120
- name: pagerduty-billing
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/billing
- name: slack-billing
  slack_configs:
  - channel: "#billing-alerts"
    send_resolved: true
- name: jira-billing
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/billing
- name: pagerduty-build-infra
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/build-infra
- name: slack-build-infra
  slack_configs:
  - channel: "#build-infra-alerts"
    send_resolved: true
- name: jira-build-infra
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/build_infra
- name: pagerduty-core-api
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/core-api
- name: slack-core-api
  slack_configs:
  - channel: "#core-api-alerts"
    send_resolved: true
- name: jira-core-api
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/core_api
- name: pagerduty-data-platform
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/data-platform
- name: slack-data-platform
  slack_configs:
  - channel: "#data-platform-alerts"
    send_resolved: true
- name: jira-data-platform
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/data_platform
- name: pagerduty-database-reliability
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/database-reliability
- name: slack-database-reliability
  slack_configs:
  - channel: "#database-reliability-alerts"
    send_resolved: true
- name: jira-database-reliability
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/database_reliability
- name: pagerduty-identity
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/identity
- name: slack-identity
  slack_configs:
  - channel: "#identity-alerts"
    send_resolved: true
- name: jira-identity
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/identity
- name: pagerduty-integrations
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/integrations
- name: slack-integrations
  slack_configs:
  - channel: "#integrations-alerts"
    send_resolved: true
- name: jira-integrations
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/integrations
- name: pagerduty-messaging
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/messaging
- name: slack-messaging
  slack_configs:
  - channel: "#messaging-alerts"
    send_resolved: true
- name: jira-messaging
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/messaging
- name: pagerduty-ml-platform
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/ml-platform
- name: slack-ml-platform
  slack_configs:
  - channel: "#ml-platform-alerts"
    send_resolved: true
- name: jira-ml-platform
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/ml_platform
- name: pagerduty-network
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/network
- name: slack-network
  slack_configs:
  - channel: "#network-alerts"
    send_resolved: true
- name: jira-network
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/network
- name: pagerduty-platform
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/platform
- name: slack-platform
  slack_configs:
  - channel: "#platform-alerts"
    send_resolved: true
- name: jira-platform
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/platform
- name: pagerduty-reporting
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/reporting
- name: slack-reporting
  slack_configs:
  - channel: "#reporting-alerts"
    send_resolved: true
- name: jira-reporting
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/reporting
- name: pagerduty-search
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/search
- name: slack-search
  slack_configs:
  - channel: "#search-alerts"
    send_resolved: true
- name: jira-search
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/search
- name: pagerduty-security-ops
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/security-ops
- name: slack-security-ops
  slack_configs:
  - channel: "#security-ops-alerts"
    send_resolved: true
- name: jira-security-ops
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/security_ops
- name: pagerduty-storage
  pagerduty_configs:
  - routing_key_file: /etc/alertmanager/secrets/pagerduty/storage
- name: slack-storage
  slack_configs:
  - channel: "#storage-alerts"
    send_resolved: true
- name: jira-storage
  webhook_configs:
  - url: https://jira-bridge.tessellate.example/hooks/storage
# unused since 2024, the SMTP relay it points at is gone
- name: email-oncall
  email_configs:
  - to: oncall@tessellate.example
    send_resolved: false
inhibit_rules:
# a critical copy holds back the warning copy of the same alert
- source_matchers:
  - severity="critical"
  target_matchers:
  - severity="warning"
  equal: [alertname, service]
- source_matchers:
  - alertname="TenantApiDown"
  target_matchers:
  - alertname=~"TenantApiErrorBudgetBurnFast|TenantApiErrorBudgetBurnSlow|TenantApiHighErrorRatio"
  equal: [service]
AF_EOF
mkdir -p 'rules'
cat > 'rules/core-api-rules.yaml' <<'AF_EOF'
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: core-api-rules
  namespace: monitoring
  labels:
    role: alert-rules
spec:
  groups:
  - name: files-api
    rules:
    - alert: FilesApiDown
      expr: |
        sum by (service) (up{service="files-api"}) == 0
        or absent(up{service="files-api"})
      for: 3m
      labels:
        severity: page
        team: core-api
      annotations:
        summary: files-api has no healthy scrape targets
        runbook_url: https://runbooks.tessellate.example/alerts/FilesApiDown
    - alert: FilesApiHighErrorRatio
      expr: |
        sum by (service) (rate(http_requests_total{service="files-api",code=~"5.."}[5m]))
        / sum by (service) (rate(http_requests_total{service="files-api"}[5m])) > 0.05
      for: 10m
      labels:
        severity: page
        team: core-api
      annotations:
        summary: "{{ $labels.service }} is failing {{ $value | humanizePercentage }} of requests"
        runbook_url: https://runbooks.tessellate.example/alerts/FilesApiHighErrorRatio
    - alert: FilesApiErrorBudgetBurnFast
      expr: |
        slo:sli_error:ratio_rate1h{service="files-api"} > (14.4 * 0.0005)
        and slo:sli_error:ratio_rate5m{service="files-api"} > (14.4 * 0.0005)
      for: 2m
      labels:
        severity: page
        team: core-api
        slo: files-api-availability
      annotations:
        summary: "{{ $labels.service }} is spending its error budget fast"
        runbook_url: https://runbooks.tessellate.example/alerts/FilesApiErrorBudgetBurnFast
    # ticket, not page: at this rate there are days of budget left, not hours
    - alert: FilesApiErrorBudgetBurnSlow
      expr: |
        slo:sli_error:ratio_rate6h{service="files-api"} > (6 * 0.0005)
        and slo:sli_error:ratio_rate30m{service="files-api"} > (6 * 0.0005)
      for: 15m
      labels:
        severity: ticket
        team: core-api
        slo: files-api-availability
      annotations:
        summary: "{{ $labels.service }} is spending its error budget steadily"
        runbook_url: https://runbooks.tessellate.example/alerts/FilesApiErrorBudgetBurnSlow
    - alert: DbClientConnectionErrors
      expr: |
        rate(db_client_connection_errors_total{service="files-api"}[2m]) > 0.5
      for: 2m
      labels:
        severity: page
        team: core-api
      annotations:
        summary: "{{ $labels.pod }} can't get database connections"
        runbook_url: https://runbooks.tessellate.example/alerts/DbClientConnectionErrors
  - name: tenant-api
    rules:
    - alert: TenantApiDown
      expr: |
        sum by (service) (up{service="tenant-api"}) == 0
        or absent(up{service="tenant-api"})
      for: 3m
      labels:
        severity: page
        team: core-api
      annotations:
        summary: tenant-api has no healthy scrape targets
        runbook_url: https://runbooks.tessellate.example/alerts/TenantApiDown
    - alert: TenantApiHighErrorRatio
      expr: |
        sum by (service) (rate(http_requests_total{service="tenant-api",code=~"5.."}[5m]))
        / sum by (service) (rate(http_requests_total{service="tenant-api"}[5m])) > 0.1
      for: 10m
      labels:
        severity: page
        team: core-api
      annotations:
        summary: "{{ $labels.service }} is failing {{ $value | humanizePercentage }} of requests"
        runbook_url: https://runbooks.tessellate.example/alerts/TenantApiHighErrorRatio
    - alert: TenantApiErrorBudgetBurnFast
      expr: |
        slo:sli_error:ratio_rate1h{service="tenant-api"} > (14.4 * 0.01)
        and slo:sli_error:ratio_rate5m{service="tenant-api"} > (14.4 * 0.01)
      for: 2m
      labels:
        severity: page
        team: core-api
        slo: tenant-api-availability
      annotations:
        summary: "{{ $labels.service }} is spending its error budget fast"
        runbook_url: https://runbooks.tessellate.example/alerts/TenantApiErrorBudgetBurnFast
    - alert: TenantApiErrorBudgetBurnSlow
      expr: |
        slo:sli_error:ratio_rate6h{service="tenant-api"} > (6 * 0.01)
        and slo:sli_error:ratio_rate30m{service="tenant-api"} > (6 * 0.01)
      for: 15m
      labels:
        severity: ticket
        team: core-api
        slo: tenant-api-availability
      annotations:
        summary: "{{ $labels.service }} is spending its error budget steadily"
        runbook_url: https://runbooks.tessellate.example/alerts/TenantApiErrorBudgetBurnSlow
    - alert: DbClientConnectionErrors
      expr: |
        rate(db_client_connection_errors_total{service="tenant-api"}[2m]) > 0.5
      for: 2m
      labels:
        severity: page
        team: core-api
      annotations:
        summary: "{{ $labels.pod }} can't get database connections"
        runbook_url: https://runbooks.tessellate.example/alerts/DbClientConnectionErrors
  - name: sso-gw
    rules:
    - alert: SsoGwDown
      expr: |
        sum by (service) (up{service="sso-gw"}) == 0
        or absent(up{service="sso-gw"})
      for: 3m
      labels:
        severity: page
        team: identity
      annotations:
        summary: sso-gw has no healthy scrape targets
        runbook_url: https://runbooks.tessellate.example/alerts/SsoGwDown
    - alert: SsoGwHighErrorRatio
      expr: |
        sum by (service) (rate(http_requests_total{service="sso-gw",code=~"5.."}[5m]))
        / sum by (service) (rate(http_requests_total{service="sso-gw"}[5m])) > 0.05
      for: 10m
      labels:
        severity: page
        team: identity
      annotations:
        summary: "{{ $labels.service }} is failing {{ $value | humanizePercentage }} of requests"
        runbook_url: https://runbooks.tessellate.example/alerts/SsoGwHighErrorRatio
    - alert: SsoGwErrorBudgetBurnFast
      expr: |
        slo:sli_error:ratio_rate1h{service="sso-gw"} > (14.4 * 0.005)
        and slo:sli_error:ratio_rate5m{service="sso-gw"} > (14.4 * 0.005)
      for: 2m
      labels:
        severity: page
        team: identity
        slo: sso-gw-availability
      annotations:
        summary: "{{ $labels.service }} is spending its error budget fast"
        runbook_url: https://runbooks.tessellate.example/alerts/SsoGwErrorBudgetBurnFast
    - alert: SsoGwErrorBudgetBurnSlow
      expr: |
        slo:sli_error:ratio_rate6h{service="sso-gw"} > (6 * 0.005)
        and slo:sli_error:ratio_rate30m{service="sso-gw"} > (6 * 0.005)
      for: 15m
      labels:
        severity: ticket
        team: identity
        slo: sso-gw-availability
      annotations:
        summary: "{{ $labels.service }} is spending its error budget steadily"
        runbook_url: https://runbooks.tessellate.example/alerts/SsoGwErrorBudgetBurnSlow
    - alert: DbClientConnectionErrors
      expr: |
        rate(db_client_connection_errors_total{service="sso-gw"}[2m]) > 0.5
      for: 2m
      labels:
        severity: page
        team: identity
      annotations:
        summary: "{{ $labels.pod }} can't get database connections"
        runbook_url: https://runbooks.tessellate.example/alerts/DbClientConnectionErrors
AF_EOF
mkdir -p 'rules'
cat > 'rules/slo-billing-svc.yml' <<'AF_EOF'
groups:
- name: slo-billing-svc
  rules:
  - alert: BillingSvcErrorBudgetBurnFast
    expr: |
      slo:sli_error:ratio_rate1h{service="billing-svc"} > (14.4 * 0.001)
      and slo:sli_error:ratio_rate5m{service="billing-svc"} > (14.4 * 0.001)
    for: 2m
    labels:
      severity: page
      team: billing
      slo: billing-svc-availability
    annotations:
      summary: "{{ $labels.service }} is spending its error budget fast"
      runbook_url: https://runbooks.tessellate.example/alerts/BillingSvcErrorBudgetBurnFast
  - alert: BillingSvcErrorBudgetBurnSlow
    expr: |
      slo:sli_error:ratio_rate6h{service="billing-svc"} > (1.4 * 0.001)
      and slo:sli_error:ratio_rate30m{service="billing-svc"} > (1.4 * 0.001)
    for: 15m
    labels:
      severity: ticket
      team: billing
      slo: billing-svc-availability
    annotations:
      summary: "{{ $labels.service }} is spending its error budget steadily"
      runbook_url: https://runbooks.tessellate.example/alerts/BillingSvcErrorBudgetBurnSlow
AF_EOF