Log Analysis and Anomaly Detection

Medium~12h estimatedTechnologySaaSFinance

Elasticsearch MCP ServerSlack MCP ServerPagerDuty MCP Server

The Challenge

Business Problem

Teams rely on static alerting rules that either fire too often (alert fatigue) or miss novel failure modes. Log analysis is reactive rather than proactive.

The Approach

Solution Overview

Connect Elasticsearch MCP Server with Slack and PagerDuty to continuously analyze logs for anomalous patterns and intelligently alert based on severity.

Step-by-Step

Implementation Steps

Stream Log Data

Configure Elasticsearch MCP Server to query recent log entries across all services.

Detect Anomalies

Compare log patterns against historical baselines: error rates, response times, unusual messages.

Classify and Alert

Route alerts based on severity and type to appropriate channels.

async function analyzeLogWindow() {
  const logs = await elasticsearch.search({ index: 'app-logs-*', query: { range: { '@timestamp': { gte: 'now-5m' } } } });
  const errorRate = logs.filter(l => l.level === 'error').length / logs.length;
  const p99Latency = percentile(logs.map(l => l.duration), 99);
  if (errorRate > errorBaseline * 3) {
    await pagerduty.createIncident({ title: `Error rate spike: ${(errorRate*100).toFixed(1)}%`, severity: 'high' });
  } else if (p99Latency > latencyBaseline * 2) {
    await slack.sendMessage({ channel: '#alerts', text: `⚠️ Latency degradation: p99 = ${p99Latency}ms` });
  }
}

Generate Daily Digest

Summarize daily log health including error trends, slow endpoints, and resolved anomalies.

Code

Code Examples

typescript

Anomaly Detector

function detectAnomalies(current, baseline, stdDev) {
  const zScore = (current - baseline) / stdDev;
  if (zScore > 3) return { level: 'critical', zScore };
  if (zScore > 2) return { level: 'warning', zScore };
  return { level: 'normal', zScore };
}

Overview

ComplexityMedium

Estimated Time~12 hours

Tools Used

Elasticsearch MCP ServerSlack MCP ServerPagerDuty MCP Server

Industry

TechnologySaaSFinance

ROI Metrics

Time Saved10 hours/week

Cost Reduction60% fewer production incidents

Efficiency Gain15-minute earlier detection