WATCHLOG PRODUCT · LOGS

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Search your logs.
Find the line that matters.

Ingest structured and unstructured logs from any source. Full-text search, real-time alerting, and log-to-trace correlation — all in one place.

Logs

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Full-text search·Log-to-trace links·Pattern detection

THE PROBLEM

Logs are the evidence. You need to find them fast.

When an incident fires, logs hold the answer — but only if you can find the right line across thousands of log files from dozens of services. SSHing into servers and grepping in production is slow, inconsistent, and does not scale.

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Logs are spread across many hosts

Every server has its own log files. Correlating them during an incident costs critical minutes.

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Searching in production is dangerous

grep and tail on a production server is a risk nobody should take in the middle of an incident.

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No alerts on log patterns

You only know about a spike in ERROR logs after a user reports it.

WHAT'S MONITORED

Everything Log Monitoring captures.

Real signals collected by the Watchlog Agent — available in your dashboard within 60 seconds of enabling.

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Full-text log search

Search across all ingested logs with field-level filtering, regex, and date range selection.

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Structured log parsing

JSON, syslog, NGINX access logs, and custom formats parsed automatically into searchable fields.

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Log-to-trace correlation

Jump from a trace span directly to the matching log lines — same request, same moment.

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Pattern-based alerting

Alert when a log pattern matches — "ERROR" rate spikes, specific exception strings, or custom regex.

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Log volume charts

See log ingestion volume by level (ERROR / WARN / INFO) over time with anomaly highlighting.

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Retention management

Configure per-source log retention from 7 days to 12 months to balance cost and compliance.

LIVE VIEW

Live log stream — searchable in real time.

Filter any log source, search by field, and navigate to the exact log line — without touching a server.

Log Monitoring · Live

🔍Search logs... field:value regex...

ALLERRORWARNINFODEBUG

2024-01-15 14:23:01[ERROR]checkout-serviceNullPointerException at PaymentProcessor.java:142

2024-01-15 14:23:01[WARN] order-service Retry attempt 3/5 for order #44821

2024-01-15 14:22:59[INFO] api-gateway POST /api/checkout 500 142ms

2024-01-15 14:22:58[ERROR]auth-service JWT validation failed: token expired

2024-01-15 14:22:57[INFO] order-service New order received: #44821

2024-01-15 14:22:55[INFO] api-gateway GET /api/products 200 34ms

CAPABILITIES

What Log Monitoring gives you.

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Any log source

Application logs, NGINX access logs, syslog, systemd journal, and custom file paths.

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Trace correlation

Log lines linked to distributed traces by request ID or trace context header.

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Alert on log patterns

Multi-condition log alerts: ERROR rate > 10/min, specific string match, or regex.

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Pattern anomaly detection

Unusual log patterns automatically surfaced without manual threshold configuration.

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Field extraction

Parse JSON logs into indexed fields (status_code, user_id, duration) for structured querying.

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Log volume trending

Log ingestion charted by level and source — spot an ERROR flood before it becomes an incident.

USE CASES

How engineering teams use Log Monitoring.

≡Incident log investigation

Filter to ERROR logs across all services in the 5-minute window around an alert. Find the root exception without touching a single server.

Incident ResponseSearchProduction

⌇Trace-to-log debugging

A trace shows a 400ms span in the payment service. Click the span to see matching log lines from that exact request.

APMTracesDebugging

▣NGINX access log analysis

Parse NGINX access logs to see request rate by status code, URL, and client IP. Alert on 5xx rate spikes.

NGINXAccess LogsAlerts

⚡Proactive error alerting

Set an alert: "If ERROR log count exceeds 20/min for checkout-service, notify Slack #on-call." Know before users report.

AlertsSlackProactive

PLATFORM FIT

Log Monitoring inside the Watchlog platform.

Log Monitoring links directly to APM traces, surfaces signals for AI Analysis, and feeds alert rules that route to your on-call team.

≡Log MonitoringCentral log search & stream

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⌇APMTrace-to-log jump in one click

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◈AI AnalysisLog patterns as root cause evidence

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⚡AlertsFire on log count or pattern match

QUICK START

Start Log Monitoring in under 2 minutes.

No YAML. No complex configuration. The Watchlog Agent handles discovery automatically.

Install the Agent

One curl command on your host. The Watchlog Agent starts immediately.

sudo apiKey="$WATCHLOG_API_KEY" server="$WATCHLOG_SERVER" MEMORY="300M" bash -c "$(curl -L https://watchlog.io/ubuntu/watchlog-script.sh)

Enable Log Monitoring

Navigate to Watchlog → Log Monitoring and configure log paths. The agent ships logs automatically from detected sources.

Data appears in 60s

Logs start appearing in your Watchlog dashboard within seconds of enabling. Full-text search is available immediately.

GET STARTED

Start monitoring with Log Monitoring.

Centralized log search, real-time alerting, and trace correlation — without touching a server.