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Monitoring Tools

Several monitoring tools are available to help you track resource usage, monitor processes, and inspect your development environment.

Container Resource Monitoring

dev top

Monitor all running containers and their resource usage:

dev top

This shows:

  • CPU usage per container
  • Memory consumption
  • Network I/O
  • Block I/O
  • Process counts

Press Ctrl+C to exit.

ctop

ctop is an enhanced container monitoring tool with a more detailed interface. Enable it during setup:

mkdir -p conf/ctop
dev rebuild

Then run:

dev exec ctop ctop

ctop provides:

  • Real-time container metrics
  • Interactive container management
  • Resource usage graphs
  • Container logs access

MySQL Monitoring

mytop

mytop monitors MySQL queries and processes in real-time. It's similar to top but for MySQL.

Enable mytop:

mkdir -p conf/mytop
dev rebuild

Run mytop:

dev mytop

mytop shows:

  • Currently running queries
  • Query execution time
  • Database connections
  • Slow queries
  • Server status

Press q to quit.

MySQL Process List

View current MySQL processes:

dev mysql -e "SHOW PROCESSLIST;"

For full query text:

dev mysql -e "SHOW FULL PROCESSLIST;"

Docker System Monitoring

System Info

View Docker system information:

docker system info

Disk Usage

Check Docker disk usage:

docker system df

For detailed breakdown:

docker system df -v

Container Stats

Real-time stats for all containers:

docker stats

Stats for specific container:

docker stats php

Service-Specific Monitoring

RabbitMQ Management Interface

Monitor RabbitMQ queues and messages at: http://localhost:15672

See rabbitmq.md for details.

Elasticsearch/OpenSearch

Check cluster health:

dev console curl -X GET "elasticsearch:9200/_cluster/health?pretty"

Or for OpenSearch:

dev console curl -X GET "opensearch:9200/_cluster/health?pretty"

Elasticsearch HQ

Web-based Elasticsearch monitoring. Enable it:

mkdir -p conf/elasticsearchhq
dev rebuild

Access at: http://localhost:5000

See search-ui-tools.md for more details.

ElasticVue

Modern Elasticsearch/OpenSearch web UI. Enable it:

mkdir -p conf/elasticvue
dev rebuild

Access at: http://localhost:8080

See search-ui-tools.md for more details.

Log Monitoring

Container Logs

View logs for any container:

dev logs containername

Follow logs in real-time:

dev logs -f containername

View last 100 lines:

dev logs --tail=100 containername

Multiple Container Logs

View logs from multiple containers:

dev logs php nginx

Performance Profiling

For application performance profiling:

Troubleshooting Performance Issues

High CPU Usage

Identify which container is using CPU:

dev top

Check processes inside that container:

dev exec containername top

High Memory Usage

Check memory usage:

docker stats --no-stream

Inspect specific container:

docker inspect containername | grep -i memory

Slow Database Queries

Use mytop to identify slow queries:

dev mytop

Or check the slow query log (if enabled in MySQL configuration).

Network Issues

Monitor network I/O:

dev top

Check container networking:

docker network inspect dockerdev_default