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Appdynamics: Complete Guide for Appdynamics Alert

Step-by-step guide to set up and work with alerts in AppDynamics (the screen you shared is the Alert & Respond → Policies page).

0) How AppDynamics alerts are wired

  • Health Rules: “what to watch” (e.g., CPU > 85% for 5 min).
  • Policies: “when/where to notify” (tie events like Health Rule Violation – Opens/Closes to actions).
  • Actions: “how to notify/run something” (email, HTTP webhook for Slack/PagerDuty/Jira, diagnostic dump, script).
  • (Optional) Anomaly Detection: AppD’s ML events you can also alert on.
  • Templates & Digests: re-usable message bodies and scheduled summary emails.

You’ll usually create Actions → Health Rules → Policies (in that order).


1) Prepare notifications

1.1 Configure email/SMS (once)

Alert & Respond → Email / SMS Configuration

  • Add SMTP server (host, port, auth, From address).
  • (Optional) Add SMS provider if you’ll send SMS.

1.2 Create actions you’ll reuse

Alert & Respond → Actions → Create

  • Email Action: Name “Email—SRE On-Call”, add recipients (team list), subject like [AppD][${severity}] ${application} ${eventType}: ${summary} and use variables in the body (pick from UI).
  • HTTP Request Action (for Slack/PagerDuty/Jira): paste webhook URL, set method/headers, payload JSON using event variables (e.g., ${eventMessage}, ${nodeName}, ${healthRuleName}).
  • Diagnostic/Remediation Actions (optional): thread dump, heap dump, start CPU profiling, or run script (requires Machine Agent with permissions).

Tip: keep action names generic (Email—SRE, Webhook—Slack-#prod-alerts) so many policies can reuse them.


2) Define what “bad” looks like (Health Rules)

Alert & Respond → Health Rules → Create

  1. Scope: pick the application (e.g., motoshare), then the entity type:
    • Applications / Tiers & Nodes / Business Transactions / Databases / Servers / Containers, etc.
  2. Affects: choose All or a subset (tags/tiers/BTs).
  3. Conditions:
    • Choose metric (Browse or paste Metric Path).
    • Set Critical and optionally Warning thresholds.
    • Evaluation: “X of last Y minutes” (e.g., 5 of last 5).
    • Static thresholds or dynamic/baseline (e.g., “> 3× baseline, min 50 req/min”).
  4. Rolling up: “All” vs “Any” affected entities trigger.
  5. Re-arm: add a wait time (e.g., 10–15 min) to avoid flapping.
  6. Save.

Fast starters (create a few common rules)

  • CPU Hot (Tiers & Nodes): Hardware Resources|CPU|%Busy > 85% for 5 of 5 min (Critical), > 75% (Warning).
  • Memory Pressure: Hardware Resources|Memory|%Used > 90% for 10 of 10 min.
  • BT Slow (Business Transactions): Average Response Time > baseline + 3σ, min load ≥ 30 cpm, for 5 of 10 min.
  • BT Errors: Errors per Minute > baseline + 2σ and Error % > 5% for 5 of 10 min.
  • Container Restarts (if Server/Container visibility enabled): restarts > 0 in 10 min.

Keep rules separate for infrastructure vs. application to route to the right teams.


3) (Optional) Enable Anomaly Detection

Alert & Respond → Anomaly Detection

  • Turn on for your application/tiers/BTs.
  • Choose sensitivity and minimum traffic.
  • These generate “Anomaly Detected” events you can target in policies (useful when you don’t want to hand-tune thresholds).

4) Tie events to notifications (Policies)

You can use the Policy Setup Wizard (shown on your screen) or build manually.

4.1 Quick path: Policy Setup Wizard

Alert & Respond → Policies → Policy Setup Wizard

  1. Pick Event Types:
    • Health Rule Violation – Opens (and later add a second policy for Closes).
    • (Optional) Anomaly Detected.
  2. Scope: select Application = motoshare (and narrow to tiers/BTs if needed).
  3. Action: attach “Email—SRE On-Call”, “Webhook—Slack-#prod-alerts”, etc.
  4. Execution Settings:
    • “Trigger only on Critical” (optional) to reduce noise.
    • Add re-notification/cool-down (e.g., re-notify every 60 min while still violating).
  5. Review → Create.

4.2 Manual path (more control)

Alert & Respond → Policies → Create Policy Manually

  • Section 1: Events to Match
    Add:
    • Health Rule Violation – Opens (filter to your exact Health Rules if you want).
    • (Optional) Health Rule Violation – Closes in a separate “Recovery” policy.
    • (Optional) Anomaly Detected / Server Crash / Resource Pool Limit Reached, etc.
  • Section 2: Evaluation Scope
    Application = motoshare, restrict entities if needed.
  • Section 3: Actions
    Add your email/webhook/diagnostic actions.
    Set Do not execute more than once every N minutes and wait times to control noise.
  • Section 4: Schedule/Suppression
    Exclude maintenance windows or allow “policy is disabled during deploys”.
  • Save.

Best practice: create two policies per health rule family—Alert (Opens) and Recovery (Closes)—so teams know when things clear.


5) Test end-to-end

  • Pick a rule that’s easy to trigger (e.g., lower CPU threshold on a dev tier temporarily).
  • Use Alert & Respond → Policies → (policy) → Test/Preview if available, or apply load to trigger a BT rule.
  • Confirm: event appears in Alert & Respond → Events and notifications arrive in email/Slack/Jira.

6) Reduce noise and keep signals strong

  • Prefer baselines for BT latency/error rules; add minimum load guards.
  • Use “X of last Y minutes” and re-arm times to avoid flapping.
  • Route infra vs app alerts to different actions/recipients.
  • Add maintenance windows for deploys.
  • Use Email Digests for daily/weekly rollups; keep real-time policies for actionable issues.
  • Review Top Talkers (which rules/policies fire the most) and tune monthly.

7) Example: three core policies you can add now

  1. App – BT Slow (Critical) → Slack + Email
    Event: Health Rule Violation – BT Slow (Critical) Opens → Actions: Slack + Email.
  2. Infra – Node CPU (Critical) → Email only
    Event: Health Rule Violation – CPU Hot Opens → Action: Email—SRE.
  3. Recoveries – All Critical Closes → “green” message
    Event: Health Rule Violation – Closes (filter to the two rules above) → Actions: Slack “recovered” + Email.

8) Nice-to-have add-ons

  • HTTP Request Templates & Alerting Templates: standardize payloads/messages once, reuse everywhere.
  • Mutual TLS Configuration: if your webhook target (e.g., internal gateway) requires client certs.
  • Runbook links: include a URL in email/webhook pointing to a wiki playbook per alert.
  • Auto-diagnostics: attach a thread dump or snapshot action to severe BT rules.


AppDynamics Health Rules + Policies (Starter Kit for motoshare)

1) Health Rules

🔹 Node CPU Hot

  • Scope: Tiers & Nodes → All nodes in motoshare
  • Critical: CPU % Busy > 85% for 5 of last 5 min
  • Warning: CPU % Busy > 75% for 5 of last 5 min
  • Re-arm: 10 min

🔹 Node Memory Pressure

  • Scope: Tiers & Nodes → All nodes in motoshare
  • Critical: Memory % Used > 90% for 10 of last 10 min
  • Warning: Memory % Used > 80%
  • Re-arm: 15 min

🔹 Business Transaction – Slow

  • Scope: Business Transactions → All BTs in motoshare
  • Critical: Avg Response Time > Baseline + 3σ for ≥ 30 cpm traffic, 5 of 10 min
  • Warning: Avg Response Time > Baseline + 2σ
  • Re-arm: 10 min

🔹 Business Transaction – Errors

  • Scope: Business Transactions → All BTs in motoshare
  • Critical: Error % > 5% AND Errors/min > 30, for 5 of 10 min
  • Warning: Error % > 2%
  • Re-arm: 10 min

🔹 Container Restarts (if Server/Container visibility enabled)

  • Scope: Containers in motoshare
  • Critical: Restart Count > 0 in 10 min
  • Re-arm: 20 min

2) Actions

Create these once under Alert & Respond → Actions:

  1. Email—SRE On-Call
    • To: sre-team@motoshare.com
    • Subject: [AppD][${severity}] ${application} ${eventType}: ${summary}
    • Body: include ${healthRuleName}, ${nodeName}, ${eventMessage}, ${incidentID}
  2. Slack—#alerts
    • Type: HTTP Request Action
    • URL: Slack Webhook
    • JSON payload: { "text": "*[AppDynamics Alert]*\nApp: ${application}\nEvent: ${eventType}\nRule: ${healthRuleName}\nNode: ${nodeName}\nMessage: ${eventMessage}\nLink: ${eventLink}" }

3) Policies

🔹 Policy 1: Infra – Node CPU Critical

  • Event: Health Rule Violation Opens → “Node CPU Hot”
  • Action: Email—SRE On-Call
  • Rate Limit: Once every 15 min

🔹 Policy 2: Infra – Node Memory Critical

  • Event: Health Rule Violation Opens → “Node Memory Pressure”
  • Action: Email—SRE On-Call
  • Rate Limit: Once every 20 min

🔹 Policy 3: App – BT Slow

  • Event: Health Rule Violation Opens → “BT Slow”
  • Action: Slack—#alerts + Email—SRE On-Call
  • Rate Limit: Once every 30 min

🔹 Policy 4: App – BT Errors

  • Event: Health Rule Violation Opens → “BT Errors”
  • Action: Slack—#alerts + Email—SRE On-Call
  • Rate Limit: Once every 30 min

🔹 Policy 5: Recoveries

  • Event: Health Rule Violation Closes (all above rules)
  • Action: Slack—#alerts (Recovery message)
  • Rate Limit: Once every 15 min

4) Testing & Validation

  • Temporarily lower thresholds (e.g., CPU > 5%) to trigger an alert.
  • Check Alert & Respond → Events for policy hits.
  • Confirm notifications in Slack and email.
  • Reset thresholds back to production values.

✅ With this pack:

  • Infra alerts (CPU, memory, container restarts) go to Email—SRE.
  • App-level issues (BT slow, BT errors) go to Slack + Email.
  • Recovery events let the team know when it’s safe.

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