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The Dirty Secret of Monitoring It’s Mostly Noise

Written by Critical Cloud | May 14, 2025 4:55:17 PM

The Dirty Secret of Monitoring It’s Mostly Noise

Monitoring tools often create more problems than they solve. Instead of highlighting critical issues, they bombard teams with irrelevant alerts, wasting time and reducing efficiency. Here's what you need to know:

  • 74% of alerts are unnecessary noise.
    This includes false positives, duplicate notifications, and outdated alerts.
  • Default settings are the main culprit.
    Overly sensitive thresholds like CPU or memory usage during routine tasks trigger irrelevant notifications.
  • Small teams suffer the most.
    Alert fatigue can reduce focus by 30%, pulling attention away from real issues.

Key Solutions:

  1. Customise thresholds to match system behaviour (e.g., peak hours).
  2. Route alerts to the right people based on priority.
  3. Focus on metrics that matter - customer experience, service reliability, and compliance.
  4. Review alerts quarterly to remove outdated or irrelevant ones.
  5. Use automation to filter noise and group related alerts.

By refining your alerting strategy, you can cut down noise, save time, and focus on what truly impacts your business.

PD Summit21: Epsagon: Avoiding Alert Fatigue Using the Right Observability Strategy

Why Monitoring Systems Create Extra Noise

The challenges of monitoring often boil down to two main culprits: poorly tuned default settings and an overwhelming flood of metrics from cloud services. Together, these issues can create inefficiencies that even small teams struggle to manage.

Problems with Default Settings

Default monitoring configurations are often overly sensitive, flagging every minor fluctuation as an issue. This leads to a barrage of unnecessary alerts that don’t demand immediate action. In fact, studies show that over 95% of notifications can be irrelevant or redundant. Here are some typical examples of default settings causing noise:

  • CPU usage alerts during routine batch processing.
  • Memory warnings that fail to account for specific application behaviours.
  • Network latency notifications triggered during planned maintenance.
  • Disk space alerts reacting to temporary logging spikes.

These default behaviours amplify the noise, making it harder to focus on meaningful alerts. But there’s another layer to this problem: the sheer volume of metrics generated by modern systems.

Overload of Metrics from Cloud Services

Cloud infrastructure, particularly Kubernetes-driven environments, churns out an immense amount of data. Every component generates metrics that contribute to system visibility but also increase the chances of unnecessary alerts.

Take this for example: a case study revealed that replacing generic monitoring defaults with AI-driven filtering reduced alerts by 95% and saved operators 2,000 hours annually. The root of the issue lies in the sheer variety of metrics being tracked:

  • Container orchestration systems reporting on every microservice.
  • Cloud provider data spanning multiple service layers.
  • Application performance metrics at detailed granular levels.
  • Infrastructure health checks across various components.

This overwhelming amount of data, often referred to as "metric sprawl", makes it difficult to distinguish critical signals from background noise. Without proper filtering and aggregation, every metric becomes a potential alert, diluting the team’s ability to respond effectively.

The answer isn’t to stop collecting metrics but to manage them intelligently. Configuring cloud-connected monitoring tools to trigger alerts only for meaningful events - by customising default settings - can significantly reduce noise and improve operational efficiency.

5 Ways to Cut Down Alert Noise

Reducing alert noise is essential for effective monitoring and smoother operations. Here are five practical methods to refine your monitoring approach, each addressing a specific challenge.

Setting Smarter Alert Limits

Instead of relying on fixed thresholds like "80% CPU usage", consider dynamic limits that align with your system's typical behaviour. For instance, an e-commerce platform might experience spikes in resource usage during lunch hours (12:00–14:00) and after work (17:00–19:00). Adjusting alert thresholds to account for these patterns can make a big difference.

Here’s how you can do it:

  • Establish baseline patterns: Analyse 2–4 weeks of data to understand normal system behaviour.
  • Set time-sensitive thresholds: Define different thresholds for peak times, weekends, or other busy periods.
  • Use anomaly detection: Employ machine learning to identify deviations from historical norms. This reduces false positives and helps minimise unnecessary alerts.

Sending Alerts to the Right People

Alerts are only effective if they reach the right individuals. Misrouted or irrelevant alerts lead to fatigue and missed issues. Use targeted routing to ensure alerts are sent to the appropriate people based on priority and urgency.

Priority Delivery Method Timeframe Recipients
P1 (Critical) SMS + Phone Call Within 15 minutes On-call engineers
P2 (High) Slack + Email Within 1 hour Team leads
P3 (Medium) Slack Within 8 business hours Product teams
P4 (Low) Email By the next sprint Project managers

Once alerts are routed correctly, ensure the recipients focus on metrics that genuinely impact your service’s performance.

Monitoring What Matters Most

Keep your monitoring focused on metrics that reflect customer satisfaction and operational efficiency. Unnecessary metrics only add noise and dilute attention.

Key Metrics to Monitor:

  • Customer Journey: Track checkout completion rates, payment processing times, and cart abandonment rates to understand user experience.
  • Service Performance: Measure API response times across UK regions, mobile app performance, and transaction success rates to gauge system reliability.
  • Compliance: Monitor GDPR data access request times, PCI DSS compliance, and adherence to data residency requirements to ensure regulatory alignment.
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Choosing and Setting Up Monitoring Tools

Select monitoring tools that provide clear, actionable alerts without overwhelming your team with unnecessary noise.

Self-Hosted vs Paid Monitoring Tools

When deciding between self-hosted solutions and paid services, it's important to weigh their strengths and limitations:

Feature Self-Hosted (e.g. Prometheus) Paid Solutions (e.g. Datadog)
Initial Setup Requires a significant upfront investment and dedicated infrastructure Operates on a subscription model with lower initial setup costs
Alert Noise Management Needs manual configuration and fine-tuning Comes with built-in noise reduction features
Maintenance Involves ongoing manual effort Requires less operational input
Data Retention Limited by your own storage capacity and policies Offers extended retention options as part of the service
Custom Filtering Full customisation, but demands technical expertise Includes pre-built filtering for ease of use

Research indicates that 74% of daily alerts are unnecessary noise. Paid tools often come equipped with advanced anomaly detection, which can help reduce false positives and save valuable engineering hours. Once you've chosen your tool, the next step is to integrate it seamlessly into your incident response system for smooth and automated alert management.

Connecting Your Monitoring Stack

An effective monitoring stack can significantly reduce alert fatigue when integrated properly. Here's how to make it work:

  • Two-way Integration
    Ensure two-way communication between your monitoring tools and incident management system. This enables automatic ticket creation and real-time status updates, keeping everyone on the same page.
  • Alert Correlation
    Combine related alerts into a single incident. For example, if a database slowdown impacts multiple services, consolidate the notifications to avoid creating separate tickets for each issue.
  • Automate Responses
    Set up automatic actions for common problems. This reduces the need for manual intervention, freeing up your team to focus on more complex tasks.

It's also essential to ensure your monitoring stack complies with UK data protection laws and GDPR standards, particularly regarding data residency within the UK or EU.

Finally, configure your system to prioritise service-level objectives (SLOs) over individual metrics. This approach helps your team focus on the impact to customers rather than getting lost in technical details.

Keeping Monitoring Simple Long-Term

Keeping your monitoring system streamlined as your infrastructure expands is crucial. Here are some practical ways to maintain efficiency over time. These strategies build on earlier steps, aiming to reduce unnecessary noise and ensure your team only receives alerts that truly matter.

Check and Clean Up Alerts Quarterly

Regular reviews can help keep your alerts effective and relevant. Aim to conduct these reviews every quarter, focusing on:

Review Area Key Actions Success Metrics
Alert Response Analyse incident logs for false positives Reduce noise by 25% per quarter
Alert Coverage Map alerts to critical business services 95% coverage of core services
Alert Timing Review response times and escalation processes Under 15-minute response for P1s

Pay close attention to alerts that haven’t triggered any genuine incidents in the last 90 days. These are likely candidates for adjustment or removal. Document any changes you make to track progress and improvements over time.

Use Scripts to Filter Alert Spam

Building on earlier automation techniques, scripts can play a key role in cutting down repetitive and irrelevant alerts. Here’s how scripts can help:

  • Group related alerts from multiple services into a single notification.
  • Filter out temporary issues that resolve themselves within 5 minutes.
  • Route alerts to the right teams based on service ownership.
  • Suppress duplicate alerts during scheduled maintenance periods.

For example, a well-designed script can consolidate multiple alerts - such as latency issues, timeouts, and error spikes - into one cohesive incident notification, simplifying the response process.

Make Monitoring Everyone’s Job

As AWS emphasises, "security is a top priority and we make it everyone's job". The same philosophy applies to monitoring. Empowering your entire team to take responsibility for monitoring fosters collaboration and accountability across operations.

"When leaders demonstrate a genuine commitment to cybersecurity, it instills a sense of importance and urgency throughout the organization, motivating employees to take ownership of their role in safeguarding the company's digital assets." – GXA

To establish clear ownership:

  • Involve developers in defining initial alert thresholds during service deployment.
  • Create feedback loops between incident response teams and those configuring monitoring tools.
  • Encourage teams to challenge and refine alert rules based on their day-to-day experiences.

Prioritise metrics that directly impact customer satisfaction and business outcomes. Experts also suggest that small and medium-sized businesses (SMBs) can integrate security into solution design, balancing risk management, productivity, and product development through a secure cloud environment.

Conclusion: Getting Clear Alerts That Matter

To wrap up the challenges and solutions we've explored, the key to effective monitoring lies in focusing on meaningful alerts rather than being overwhelmed by every notification. Research highlights that as much as 74% of alerts are just noise, creating unnecessary strain for SMB teams and pulling attention away from growth and innovation.

The first step is to review your alert rules carefully. Remove redundancies, centralise notifications into a single dashboard, establish clear escalation policies, and leverage automated scripts to filter out irrelevant alerts. These adjustments can significantly cut down on unnecessary notifications, ensuring that every alert you receive is actionable.

Regularly revisiting and refining your approach is crucial for improving incident response and reducing alert fatigue. This is especially important for industries like UK digital agencies, SaaS providers, and EdTech companies, where staying focused can make all the difference.

Here are the main priorities to keep in mind:

  • Centralise alerts by using a unified dashboard.
  • Automate filtering to reduce noise and focus on critical issues.
  • Review alert policies regularly to keep them efficient and relevant.
  • Promote team-wide accountability in monitoring and response practices.

FAQs

How can small teams reduce alert fatigue and focus on critical monitoring notifications?

Small teams can address alert fatigue by cutting out unnecessary notifications and zeroing in on signals that truly matter. Begin by defining clear thresholds for alerts and using tools that let you fine-tune rules to weed out false positives. It's a good idea to review and adjust these thresholds regularly to keep them in line with your system's changing needs.

Another key step is to prioritise alerts based on their urgency and potential impact. This way, your team will only be notified about critical issues that need immediate attention. Tools with customisable monitoring options tailored to your specific requirements can also help reduce the noise. With more meaningful alerts, your team can stay focused and respond to incidents more efficiently, ultimately improving overall operations.

How can I tailor monitoring thresholds to better match my system's normal behaviour?

To adjust monitoring thresholds effectively, begin by studying baseline data over a few days. This will help you understand the usual performance patterns of your system. Once you have this insight, set thresholds slightly above the average values to reduce false alarms and ensure alerts highlight actual issues.

In environments where performance varies frequently, dynamic thresholds can be a game-changer. These thresholds adapt automatically to real-time data, making them especially useful for managing cloud-native applications that scale up or down.

Tailoring thresholds to match your system's behaviour not only enhances reliability but also cuts down on unnecessary alerts. This allows your team to stay focused on addressing the alerts that genuinely require attention.

How can automation and AI help reduce noise in cloud monitoring?

Automation and AI are game-changers when it comes to simplifying cloud monitoring. By highlighting meaningful alerts and filtering out noise, these tools help teams focus on what genuinely matters. AI-powered systems can study historical data to establish normal performance patterns, making it easier to detect real anomalies while cutting down on false alarms.

These technologies also enable dynamic thresholds that adapt to shifting conditions and use intelligent routing to ensure critical issues reach the right people. This reduces alert fatigue and speeds up incident response, ultimately boosting system reliability. Plus, with fewer distractions, teams can dedicate more time to scaling and improving their cloud operations.

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