Monitoring, Logging, and Cost Management

Understanding how to monitor your Tencent Cloud resources and manage costs is essential for running a healthy cloud environment. This lesson covers Cloud Monitor, Cloud Log Service, CloudAudit, and billing tools.

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Cloud Monitor

Cloud Monitor is Tencent Cloud's primary monitoring service, collecting metrics and enabling alerting across all services.

Metrics

Automatically collected from Tencent Cloud services:

Service	Example Metrics
CVM	CPU utilisation, memory usage, disk I/O, network traffic
TencentDB	Connections, QPS, replication delay, storage usage
COS	Request count, bandwidth, error rate
CLB	Active connections, request rate, latency
SCF	Invocations, duration, errors, throttles

Alarm Policies

Define alarm rules to trigger notifications:

• Metric threshold — alert when a metric exceeds a value for a specified duration
• Event alarms — alert on infrastructure events (instance restart, failover)
• Notification channels — email, SMS, WeChat, phone call, webhook

Example: Alert when CVM CPU utilisation exceeds 85% for 5 consecutive minutes, notify via WeChat.

Dashboards

Create custom dashboards to visualise metrics:

• Combine metrics from multiple services
• Line charts, bar charts, gauges, and tables
• Share dashboards with team members
• Pre-built dashboards for common services

Custom Metrics

Report your own application metrics to Cloud Monitor:

• Push custom metrics via API
• Create alarms on custom metrics
• Visualise on dashboards

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Cloud Log Service (CLS)

CLS is a fully managed log platform for collection, storage, search, and analysis:

Key Features

Feature	Description
Log collection	Collect via LogListener agent, API, or SDK
Full-text search	Search logs with keyword queries
SQL analysis	Analyse log data with SQL-like queries
Real-time dashboards	Visualise log metrics in real time
Alerting	Trigger alerts based on log query results
Data shipping	Forward logs to COS, CKafka, or other destinations

Log Topics and Logsets

• Logset — a container for log topics (similar to a project)
• Log topic — a unit of log collection and querying

Query Syntax

CLS supports keyword search and SQL analytics:

-- Keyword search
error AND status:500

-- SQL analytics
* | SELECT status, COUNT(*) AS cnt
     GROUP BY status
     ORDER BY cnt DESC
     LIMIT 10

Common Log Sources

Source	Collection Method
CVM instances	LogListener agent
Containers (TKE)	Automatic via cluster integration
SCF functions	Automatic
CLB access logs	Built-in integration
COS access logs	Enable access logging
API Gateway	Built-in integration

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CloudAudit

CloudAudit records API calls made to your Tencent Cloud account — the equivalent of AWS CloudTrail: