Is Docker down today?

How to Contact Docker Technical Support?

- Official Website at https://www.docker.com;

- Docker Hub at https://hub.docker.com;

- Documentation at https://docs.docker.com;

- Community Forums at https://forums.docker.com;

- GitHub Issues at https://github.com/docker;

- Docker Desktop Support (Pro/Team/Business users);

- Slack Community at https://dockercommunity.slack.com.

Latest News and Current Information:

- Official Website - https://www.docker.com;

- Documentation - https://docs.docker.com;

- Docker Hub - https://hub.docker.com;

- Blog - https://www.docker.com/blog;

- GitHub - https://github.com/docker;

- X (Twitter) - https://twitter.com/Docker;

- YouTube - https://www.youtube.com/user/dockerrun;

- LinkedIn - https://www.linkedin.com/company/docker;

- Community Forums - https://forums.docker.com;

- Status Page - https://status.docker.com.

Docker Engine Outage: Container Platform Service Down

Service disruptions manifest as Docker daemon not responding, containers failing to start, Docker CLI unresponsive, registry unreachable, or complete service unavailable.

- Check Docker daemon status: `systemctl status docker`;

- Restart Docker service: `sudo systemctl restart docker`;

- Review Docker logs: `journalctl -u docker`;

- Verify Docker process running: `ps aux | grep dockerd`;

- Check Docker version: `docker version`;

- Test with simple command: `docker ps`;

- Verify sufficient disk space available;

- Check Docker socket permissions;

- Review system resource usage;

- Monitor Docker Hub status page.

Container Runtime Problem: Docker Containers Not Starting

Container issues include "container exited", startup failures, image pull errors, port binding conflicts, or resource limit errors.

- Check container logs: `docker logs <container_id>`;

- Inspect container state: `docker inspect <container_id>`;

- Verify image exists locally;

- Check port conflicts: `netstat -tulpn`;

- Review resource limits (CPU/memory);

- Verify volume mounts accessible;

- Check network configuration correct;

- Test with docker run --rm;

- Review Dockerfile syntax;

- Check container health status.

Docker Hub or Registry Fault: Cannot Pull/Push Images

Registry problems include "image not found", authentication failing, rate limit exceeded, push denied, or slow download speeds.

- Verify image name/tag correct;

- Login to registry: `docker login`;

- Check Docker Hub rate limits;

- Use authenticated pulls to increase limits;

- Verify credentials valid;

- Check network connectivity to registry;

- Try different registry mirror;

- Review .docker/config.json authentication;

- Check firewall allows registry access;

- Wait and retry if rate limited.

Networking Issue: Docker Network Not Working

Network problems include containers can't communicate, DNS resolution failing, port mapping not working, bridge network issues, or overlay network errors.

- List networks: `docker network ls`;

- Inspect network: `docker network inspect <network>`;

- Check container network mode;

- Verify port mappings: `docker port <container>`;

- Test DNS resolution inside container;

- Review iptables rules not blocking;

- Check Docker daemon network settings;

- Recreate network if needed;

- Verify overlay network requirements met;

- Test with host network mode.

Volume or Storage Problem: Docker Storage Issues

Storage issues include volume mount failing, "no space left on device", permission denied errors, data loss, or performance degraded.

- Check disk usage: `docker system df`;

- Clean up unused resources: `docker system prune`;

- Verify volume exists: `docker volume ls`;

- Inspect volume: `docker volume inspect <volume>`;

- Check mount point permissions;

- Review storage driver configuration;

- Verify sufficient disk space;

- Check file system not corrupted;

- Monitor inode usage;

- Backup volumes before cleanup.

Docker Compose Fault: Compose Services Not Starting

Compose problems include "service failed to build", dependency errors, version compatibility issues, environment variables not loading, or orchestration failures.

- Validate compose file: `docker-compose config`;

- Check compose file syntax (YAML);

- Verify docker-compose version compatible;

- Review service dependencies order;

- Check environment file exists;

- Verify image build context correct;

- Review service health checks;

- Check network definitions valid;

- Test with docker-compose up -d;

- Review compose logs for errors.

Build or Dockerfile Issue: Image Build Failing

Build problems include "build failed", layer caching issues, dependency installation errors, context too large, or multi-stage build failures.

- Review Dockerfile syntax carefully;

- Check base image available;

- Verify build context size reasonable;

- Use .dockerignore to exclude files;

- Check network during build;

- Review build cache usage;

- Test each RUN command separately;

- Verify COPY/ADD paths correct;

- Check multi-stage build order;

- Review build logs for specific errors.

Docker Desktop Problem: Desktop Application Issues

Desktop-specific issues include application not starting, WSL2 integration failing, Kubernetes not working, settings not saving, or update errors.

- Restart Docker Desktop application;

- Check system requirements met;

- Verify WSL2 installed (Windows);

- Update Docker Desktop to latest;

- Review Docker Desktop logs;

- Reset to factory defaults if needed;

- Check virtualization enabled in BIOS;

- Verify sufficient RAM allocated;

- Check firewall not blocking;

- Reinstall if persistent issues.

Permission or Security Issue: Docker Access Denied

Permission problems include "permission denied" errors, socket access issues, user not in docker group, sudo required, or seccomp errors.

- Add user to docker group: `sudo usermod -aG docker $USER`;

- Check socket permissions: `ls -l /var/run/docker.sock`;

- Logout and login after group change;

- Verify docker socket accessible;

- Review SELinux/AppArmor policies;

- Check security options in daemon.json;

- Verify user namespace remapping;

- Test with sudo temporarily;

- Review container security context;

- Check privilege escalation settings.

Swarm or Orchestration Fault: Docker Swarm Issues

Swarm problems include node unavailable, service not deploying, secrets not working, overlay network failing, or manager election issues.

- Check swarm status: `docker info`;

- List nodes: `docker node ls`;

- Verify manager quorum healthy;

- Check service status: `docker service ls`;

- Review service logs: `docker service logs`;

- Verify overlay network requirements;

- Check node availability;

- Review secrets/configs properly created;

- Test service update rollback;

- Monitor swarm events.

Performance or Resource Problem: Docker Running Slow

Performance issues include high CPU usage, memory exhaustion, slow I/O, container lag, or build timeouts.

- Monitor container resources: `docker stats`;

- Check host system resources;

- Review container resource limits;

- Optimize Dockerfile layers;

- Use multi-stage builds to reduce size;

- Check storage driver performance;

- Review logging driver overhead;

- Limit log file sizes;

- Check for resource leaks;

- Use BuildKit for faster builds.

Registry or Private Repository Issue: Private Registry Problems

Private registry issues include authentication failing, insecure registry errors, certificate problems, or registry unreachable.

- Configure insecure registry in daemon.json;

- Install registry certificates properly;

- Verify registry URL correct;

- Check basic auth credentials;

- Review registry configuration;

- Test registry connectivity;

- Check TLS/SSL certificates valid;

- Verify firewall allows registry port;

- Use docker login for authentication;

- Review registry logs for errors.