How to fix Error response from daemon: 500 Internal Server Error in Docker

# Wait and retry the operation
sleep 60
docker pull nginx:latest

# View recent Docker daemon logs
sudo journalctl -u docker.service --since "10 minutes ago"

# Follow logs in real-time
sudo journalctl -u docker.service -f

# Check various log locations
tail -100 /var/log/docker.log
tail -100 /var/log/daemon.log
grep docker /var/log/messages

# Add to /etc/docker/daemon.json
{
  "debug": true
}

# Restart Docker
sudo systemctl restart docker

# Check overall disk usage
df -h

# Check Docker-specific disk usage
docker system df

# See detailed breakdown
docker system df -v

# Remove unused containers, networks, images, and build cache
docker system prune -a

# Also remove unused volumes (careful - this deletes data!)
docker system prune -a --volumes

# Remove specific resources
docker container prune   # Remove stopped containers
docker image prune -a    # Remove unused images
docker volume prune      # Remove unused volumes

# SSH to registry server
df -h /var/lib/registry

# Run garbage collection if using Docker Registry
docker exec registry bin/registry garbage-collect /etc/docker/registry/config.yml

# Test from host
nslookup registry-1.docker.io
dig registry-1.docker.io

# Test from a container
docker run --rm alpine nslookup registry-1.docker.io

# Edit /etc/docker/daemon.json
sudo tee /etc/docker/daemon.json << EOF
{
  "dns": ["8.8.8.8", "8.8.4.4"]
}
EOF

# Restart Docker
sudo systemctl restart docker

docker run --dns 8.8.8.8 --dns 8.8.4.4 myimage

# Edit /etc/docker/daemon.json (Linux)
# or C:\ProgramData\Docker\config\daemon.json (Windows)
{
  "allow-nondistributable-artifacts": ["myregistry.example.com:5000"]
}

# Linux
sudo systemctl restart docker

# Windows (PowerShell as Administrator)
Restart-Service docker

# In your nginx.conf or site config
server {
    listen 443 ssl;
    server_name registry.example.com;

    # Increase max body size for large layers
    client_max_body_size 0;  # 0 = no limit

    # Increase timeouts for slow uploads
    proxy_connect_timeout 900;
    proxy_send_timeout 900;
    proxy_read_timeout 900;

    # Disable buffering for large files
    proxy_buffering off;
    proxy_request_buffering off;

    location / {
        proxy_pass http://registry:5000;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}

# Nginx stores request bodies in temp directory
df -h /var/lib/nginx/tmp
# or
df -h /var/cache/nginx

docker info | grep "Storage Driver"

# Check for filesystem errors
sudo dmesg | grep -i "overlay\|ext4\|xfs"

# Verify overlay module is loaded
lsmod | grep overlay

# Check thin pool space
docker info | grep -i "pool\|data\|metadata"

# If thin pool is full, extend it or prune
docker system prune -a

# WARNING: This removes all containers and images!
# Stop Docker
sudo systemctl stop docker

# Remove Docker data directory
sudo rm -rf /var/lib/docker

# Restart Docker (will recreate with fresh storage)
sudo systemctl start docker

# Linux
sudo systemctl restart docker

# Check it's running properly
sudo systemctl status docker
docker info

# Stop Docker
sudo systemctl stop docker

# Clear Docker state (preserves images/containers)
sudo rm -f /var/run/docker.pid
sudo rm -f /var/run/docker.sock

# Start Docker
sudo systemctl start docker

# Check for zombie processes
ps aux | grep -i docker

# Kill stuck processes if necessary
sudo pkill -9 -f dockerd
sudo systemctl start docker

# Logout first
docker logout

# Login again
docker login

# Test a pull
docker pull hello-world

docker logout myregistry.example.com
docker login myregistry.example.com

# View Docker config
cat ~/.docker/config.json

# If using credential helpers, verify they work
docker-credential-desktop list  # macOS/Windows
docker-credential-secretservice list  # Linux