# List networks
docker network ls

# Inspect network
docker network inspect bridge

# Create custom network
docker network create mynetwork

# Create network with specific driver
docker network create --driver bridge mybridge

# Create network with custom subnet
docker network create --subnet=172.20.0.0/16 mysubnet

# Connect container to network
docker network connect mynetwork mycontainer

# Disconnect container from network
docker network disconnect mynetwork mycontainer

# Remove network
docker network rm mynetwork

# Run container on default bridge
docker run -d --name web nginx

# Run container with port mapping
docker run -d --name web -p 8080:80 nginx

# Inspect default bridge
docker network inspect bridge

# Create custom bridge
docker network create --driver bridge \
  --subnet=172.20.0.0/16 \
  --ip-range=172.20.240.0/20 \
  --gateway=172.20.0.1 \
  custom-bridge

# Run containers on custom bridge
docker run -d --name web --network custom-bridge nginx
docker run -d --name app --network custom-bridge alpine sleep 3600

# Test connectivity
docker exec app ping web  # Works with custom bridge

# List volumes
docker volume ls

# Create volume
docker volume create myvolume

# Create volume with driver options
docker volume create --driver local \
  --opt type=nfs \
  --opt o=addr=192.168.1.1,rw \
  --opt device=:/path/to/dir \
  nfs-volume

# Inspect volume
docker volume inspect myvolume

# Remove volume
docker volume rm myvolume

# Remove unused volumes
docker volume prune

# Mount named volume
docker run -d --name db \
  -v myvolume:/var/lib/mysql \
  mysql:8.0

# Mount bind mount
docker run -d --name web \
  -v /host/path:/container/path \
  nginx

# Mount with specific options
docker run -d --name app \
  -v myvolume:/data:ro \
  alpine sleep 3600

# Mount tmpfs
docker run -d --name temp \
  --tmpfs /tmp:rw,noexec,nosuid,size=100m \
  alpine sleep 3600

# Create application network
docker network create app-network

# Database container
docker run -d --name database \
  --network app-network \
  -e MYSQL_ROOT_PASSWORD=rootpass \
  -e MYSQL_DATABASE=appdb \
  -e MYSQL_USER=appuser \
  -e MYSQL_PASSWORD=apppass \
  mysql:8.0

# Application container
docker run -d --name backend \
  --network app-network \
  -e DATABASE_URL=mysql://appuser:apppass@database:3306/appdb \
  myapp:backend

# Frontend container with port exposure
docker run -d --name frontend \
  --network app-network \
  -p 3000:3000 \
  -e API_URL=http://backend:8000 \
  myapp:frontend

# Test connectivity
docker exec frontend curl http://backend:8000/health
docker exec backend mysql -h database -u appuser -p appdb

# Create isolated networks
docker network create --internal backend-network
docker network create frontend-network

# Database (backend only)
docker run -d --name db \
  --network backend-network \
  postgres:13

# API server (both networks)
docker run -d --name api \
  --network backend-network \
  myapp:api

docker network connect frontend-network api

# Web server (frontend only)
docker run -d --name web \
  --network frontend-network \
  -p 80:80 \
  nginx

# Database is not accessible from web server
docker exec web ping db  # This will fail

# Create volume for database
docker volume create postgres-data

# Run PostgreSQL with persistent storage
docker run -d --name postgres \
  -v postgres-data:/var/lib/postgresql/data \
  -e POSTGRES_DB=myapp \
  -e POSTGRES_USER=user \
  -e POSTGRES_PASSWORD=password \
  postgres:13

# Backup database
docker exec postgres pg_dump -U user myapp > backup.sql

# Restore database
docker exec -i postgres psql -U user myapp < backup.sql

# Create volumes
docker volume create app-data
docker volume create app-config

# Run application with multiple mounts
docker run -d --name myapp \
  -v app-data:/app/data \
  -v app-config:/app/config \
  -v /host/logs:/app/logs \
  -v /etc/localtime:/etc/localtime:ro \
  myapp:latest

# Initialize configuration
docker exec myapp cp /app/config.template.json /app/config/config.json

# Create shared volume
docker volume create shared-data

# Writer container
docker run -d --name writer \
  -v shared-data:/data \
  alpine sh -c 'while true; do echo "$(date)" >> /data/log.txt; sleep 10; done'

# Reader container
docker run -d --name reader \
  -v shared-data:/data:ro \
  alpine sh -c 'while true; do tail -f /data/log.txt; sleep 1; done'

# Monitor shared data
docker logs reader

version: '3.8'

services:
  web:
    image: nginx
    ports:
      - "80:80"
    volumes:
      - ./html:/usr/share/nginx/html:ro
      - web-logs:/var/log/nginx
    networks:
      - frontend
    depends_on:
      - api

  api:
    build: ./api
    volumes:
      - api-data:/app/data
      - ./config:/app/config:ro
    networks:
      - frontend
      - backend
    environment:
      - DATABASE_URL=postgresql://user:pass@db:5432/myapp
    depends_on:
      - db

  db:
    image: postgres:13
    volumes:
      - postgres-data:/var/lib/postgresql/data
      - ./init.sql:/docker-entrypoint-initdb.d/init.sql:ro
    networks:
      - backend
    environment:
      - POSTGRES_DB=myapp
      - POSTGRES_USER=user
      - POSTGRES_PASSWORD=pass

volumes:
  postgres-data:
  api-data:
  web-logs:

networks:
  frontend:
    driver: bridge
  backend:
    driver: bridge
    internal: true

version: '3.8'

services:
  app:
    image: myapp
    networks:
      app-network:
        ipv4_address: 172.20.0.10
        aliases:
          - api-server
          - backend

  db:
    image: postgres:13
    networks:
      app-network:
        ipv4_address: 172.20.0.20

networks:
  app-network:
    driver: bridge
    ipam:
      config:
        - subnet: 172.20.0.0/16
          gateway: 172.20.0.1
    driver_opts:
      com.docker.network.bridge.name: app-bridge
      com.docker.network.bridge.enable_icc: "true"
      com.docker.network.bridge.enable_ip_masquerade: "true"

# Check container networking
docker exec container ip addr show
docker exec container ip route show
docker exec container netstat -tlnp

# Test connectivity between containers
docker exec container1 ping container2
docker exec container1 telnet container2 port
docker exec container1 nslookup container2

# Inspect network configuration
docker network inspect network-name
docker inspect container-name | grep -A 20 NetworkSettings

# Check volume mounts
docker inspect container-name | grep -A 10 Mounts

# Check volume usage
docker system df
docker volume ls
docker volume inspect volume-name

# Check file permissions
docker exec container ls -la /mount/point
docker exec container id  # Check user/group

# Debug storage issues
docker run --rm -v volume-name:/data alpine ls -la /data
docker run --rm -v /host/path:/data alpine ls -la /data

# Monitor network traffic
docker exec container netstat -i
docker exec container ss -tuln

# Monitor storage I/O
docker exec container iostat -x 1
docker exec container df -h

# Container resource usage
docker stats
docker exec container top

# Inspect container network namespace
docker exec container ip netns list
docker exec container ls -la /proc/self/ns/

# Create container with host networking
docker run -d --name host-net --network host nginx

# Create container with no networking
docker run -d --name no-net --network none alpine sleep 3600

# Share network namespace between containers
docker run -d --name primary alpine sleep 3600
docker run -d --name secondary --network container:primary alpine sleep 3600

# Create macvlan network
docker network create -d macvlan \
  --subnet=192.168.1.0/24 \
  --gateway=192.168.1.1 \
  -o parent=eth0 \
  macvlan-net

# Create ipvlan network
docker network create -d ipvlan \
  --subnet=192.168.2.0/24 \
  --gateway=192.168.2.1 \
  -o parent=eth0 \
  -o ipvlan_mode=l2 \
  ipvlan-net

# Use external network plugin
docker network create -d weave \
  --subnet=10.32.0.0/12 \
  weave-net

# Create network with encryption (overlay)
docker network create \
  --driver overlay \
  --opt encrypted \
  --subnet=10.0.0.0/24 \
  secure-overlay

# Network with custom iptables rules
docker network create \
  --driver bridge \
  --opt com.docker.network.bridge.enable_icc=false \
  --opt com.docker.network.bridge.enable_ip_masquerade=true \
  isolated-bridge

# Container with specific security options
docker run -d --name secure-app \
  --network isolated-bridge \
  --security-opt no-new-privileges \
  --cap-drop ALL \
  --cap-add NET_BIND_SERVICE \
  nginx

# Local driver with specific options
docker volume create \
  --driver local \
  --opt type=ext4 \
  --opt device=/dev/sdb1 \
  local-volume

# NFS volume
docker volume create \
  --driver local \
  --opt type=nfs \
  --opt o=addr=192.168.1.100,rw \
  --opt device=:/exports/data \
  nfs-volume

# CIFS/SMB volume
docker volume create \
  --driver local \
  --opt type=cifs \
  --opt o=username=user,password=pass,uid=1000,gid=1000 \
  --opt device=//server/share \
  cifs-volume

# Encrypted volume
docker volume create \
  --driver local \
  --opt type=ext4 \
  --opt o=loop,encryption=aes256 \
  encrypted-volume

# Install volume plugin
docker plugin install rexray/ebs

# Create EBS volume
docker volume create \
  --driver rexray/ebs \
  --opt size=10 \
  --opt volumetype=gp2 \
  ebs-volume

# Use cloud storage
docker volume create \
  --driver rexray/s3fs \
  --opt bucket=my-bucket \
  --opt region=us-east-1 \
  s3-volume

# docker-compose.yml with optimized storage
version: '3.8'

services:
  database:
    image: postgres:13
    volumes:
      # Separate data and WAL for performance
      - postgres-data:/var/lib/postgresql/data
      - postgres-wal:/var/lib/postgresql/wal
      # tmpfs for temporary files
      - type: tmpfs
        target: /tmp
        tmpfs:
          size: 1G
      # Shared memory for PostgreSQL
      - type: tmpfs
        target: /dev/shm
        tmpfs:
          size: 2G
    environment:
      - POSTGRES_INITDB_WALDIR=/var/lib/postgresql/wal

  redis:
    image: redis:7-alpine
    volumes:
      - redis-data:/data
      # tmpfs for Redis working directory
      - type: tmpfs
        target: /tmp
        tmpfs:
          size: 512M
    command: |
      redis-server
      --save 900 1
      --save 300 10
      --save 60 10000
      --dir /data

volumes:
  postgres-data:
    driver: local
    driver_opts:
      type: ext4
      o: noatime,nodiratime
  postgres-wal:
    driver: local
    driver_opts:
      type: ext4
      o: noatime,nodiratime,sync
  redis-data:
    driver: local

# Optimize network performance
docker run -d --name optimized-app \
  --network custom-bridge \
  --sysctl net.core.rmem_max=134217728 \
  --sysctl net.core.wmem_max=134217728 \
  --sysctl net.ipv4.tcp_rmem="4096 65536 134217728" \
  --sysctl net.ipv4.tcp_wmem="4096 65536 134217728" \
  --sysctl net.ipv4.tcp_congestion_control=bbr \
  myapp

# Container with increased network buffers
docker run -d --name high-throughput \
  --ulimit nofile=65536:65536 \
  --sysctl net.core.netdev_max_backlog=5000 \
  --sysctl net.core.netdev_budget=600 \
  nginx

# Monitor network statistics
docker exec container cat /proc/net/dev
docker exec container ss -tuln
docker exec container netstat -i

# Network performance testing
docker run --rm --network container:target \
  nicolaka/netshoot iperf3 -c server-ip

# Packet capture
docker run --rm --network container:target \
  nicolaka/netshoot tcpdump -i eth0 -w capture.pcap

# Network troubleshooting toolkit
docker run -it --rm --network container:target \
  nicolaka/netshoot

# High-performance storage mount
docker run -d --name fast-db \
  -v fast-storage:/var/lib/mysql \
  --mount type=tmpfs,destination=/tmp,tmpfs-size=1G \
  --device-read-bps /dev/sda:100mb \
  --device-write-bps /dev/sda:100mb \
  mysql:8.0

# Storage with specific I/O scheduler
docker volume create \
  --driver local \
  --opt type=ext4 \
  --opt o=noatime,data=writeback \
  fast-volume

# Monitor storage usage
docker system df -v
docker exec container df -h
docker exec container iostat -x 1

# Volume inspection
docker volume inspect volume-name
docker exec container lsblk
docker exec container mount | grep volume

# Storage performance testing
docker run --rm -v test-volume:/data \
  alpine dd if=/dev/zero of=/data/testfile bs=1M count=1000

# Initialize swarm
docker swarm init --advertise-addr 192.168.1.10

# Create overlay network
docker network create \
  --driver overlay \
  --subnet=10.0.0.0/24 \
  --gateway=10.0.0.1 \
  --attachable \
  multi-host-net

# Deploy service on overlay network
docker service create \
  --name web \
  --network multi-host-net \
  --replicas 3 \
  nginx

# Inspect overlay network
docker network inspect multi-host-net

# Connect to external network
docker network create \
  --driver bridge \
  --subnet=172.20.0.0/16 \
  --gateway=172.20.0.1 \
  --opt com.docker.network.bridge.name=docker-ext \
  external-bridge

# Route traffic to external services
docker run -d --name proxy \
  --network external-bridge \
  -p 80:80 \
  -v ./nginx.conf:/etc/nginx/nginx.conf \
  nginx

# Secure network configuration
version: '3.8'

services:
  web:
    image: nginx
    networks:
      - frontend
    ports:
      - "443:443"
    volumes:
      - ./ssl:/etc/nginx/ssl:ro

  app:
    image: myapp
    networks:
      - frontend
      - backend
    # No exposed ports - only accessible through nginx

  db:
    image: postgres:13
    networks:
      - backend  # Isolated from frontend
    volumes:
      - db-data:/var/lib/postgresql/data
    environment:
      - POSTGRES_SSL_MODE=require

networks:
  frontend:
    driver: bridge
    driver_opts:
      com.docker.network.bridge.enable_icc: "false"
  backend:
    driver: bridge
    internal: true  # No external access

volumes:
  db-data:
    driver: local
    driver_opts:
      type: ext4
      o: noatime,nodev,nosuid

# Encrypted volume with specific permissions
docker volume create \
  --driver local \
  --opt type=ext4 \
  --opt o=encryption=aes256,uid=1000,gid=1000,mode=0700 \
  secure-volume

# Read-only mounts for security
docker run -d --name secure-app \
  -v config-volume:/app/config:ro \
  -v secrets-volume:/app/secrets:ro,Z \
  --read-only \
  --tmpfs /tmp:noexec,nosuid,size=100m \
  myapp

# SELinux labels for enhanced security
docker run -d --name selinux-app \
  -v data-volume:/app/data:Z \
  -v logs-volume:/app/logs:z \
  --security-opt label=type:container_t \
  myapp

#!/bin/bash
# backup-networks.sh

# Backup network configurations
mkdir -p network-backup
for network in $(docker network ls --format "{{.Name}}" | grep -v bridge | grep -v host | grep -v none); do
    docker network inspect $network > network-backup/$network.json
done

# Restore networks
for config in network-backup/*.json; do
    network_name=$(basename $config .json)
    # Parse JSON and recreate network
    docker network create --driver $(jq -r '.[0].Driver' $config) $network_name
done

#!/bin/bash
# backup-volumes.sh

# Backup volume data
backup_volume() {
    local volume_name=$1
    local backup_path=$2
    
    docker run --rm \
        -v $volume_name:/source:ro \
        -v $backup_path:/backup \
        alpine tar czf /backup/$volume_name-$(date +%Y%m%d).tar.gz -C /source .
}

# Restore volume data
restore_volume() {
    local volume_name=$1
    local backup_file=$2
    
    docker run --rm \
        -v $volume_name:/target \
        -v $(dirname $backup_file):/backup \
        alpine tar xzf /backup/$(basename $backup_file) -C /target
}

# Backup all volumes
for volume in $(docker volume ls -q); do
    backup_volume $volume ./backups
done

# docker-compose.microservices.yml
version: '3.8'

services:
  # API Gateway
  api-gateway:
    image: nginx:alpine
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
      - ./nginx/ssl:/etc/nginx/ssl:ro
    networks:
      - frontend
      - monitoring
    depends_on:
      - user-service
      - product-service
      - order-service

  # User Service
  user-service:
    build: ./services/user
    networks:
      - frontend
      - backend
      - user-db-net
    volumes:
      - user-logs:/app/logs
    environment:
      - DATABASE_URL=postgresql://user:pass@user-db:5432/users
      - REDIS_URL=redis://redis-cluster:6379/0
    depends_on:
      - user-db
      - redis-cluster

  user-db:
    image: postgres:13
    networks:
      - user-db-net
    volumes:
      - user-db-data:/var/lib/postgresql/data
      - user-db-config:/etc/postgresql
    environment:
      - POSTGRES_DB=users
      - POSTGRES_USER=user
      - POSTGRES_PASSWORD=pass

  # Product Service
  product-service:
    build: ./services/product
    networks:
      - frontend
      - backend
      - product-db-net
    volumes:
      - product-logs:/app/logs
      - product-images:/app/images
    environment:
      - DATABASE_URL=postgresql://product:pass@product-db:5432/products
      - ELASTICSEARCH_URL=http://elasticsearch:9200
    depends_on:
      - product-db
      - elasticsearch

  product-db:
    image: postgres:13
    networks:
      - product-db-net
    volumes:
      - product-db-data:/var/lib/postgresql/data
    environment:
      - POSTGRES_DB=products
      - POSTGRES_USER=product
      - POSTGRES_PASSWORD=pass

  # Order Service
  order-service:
    build: ./services/order
    networks:
      - frontend
      - backend
      - order-db-net
    volumes:
      - order-logs:/app/logs
    environment:
      - DATABASE_URL=postgresql://order:pass@order-db:5432/orders
      - RABBITMQ_URL=amqp://guest:guest@rabbitmq:5672/
    depends_on:
      - order-db
      - rabbitmq

  order-db:
    image: postgres:13
    networks:
      - order-db-net
    volumes:
      - order-db-data:/var/lib/postgresql/data
    environment:
      - POSTGRES_DB=orders
      - POSTGRES_USER=order
      - POSTGRES_PASSWORD=pass

  # Shared Services
  redis-cluster:
    image: redis:7-alpine
    networks:
      - backend
    volumes:
      - redis-data:/data
    command: |
      redis-server
      --cluster-enabled yes
      --cluster-config-file nodes.conf
      --cluster-node-timeout 5000
      --appendonly yes

  elasticsearch:
    image: elasticsearch:7.17.0
    networks:
      - backend
    volumes:
      - elasticsearch-data:/usr/share/elasticsearch/data
    environment:
      - discovery.type=single-node
      - "ES_JAVA_OPTS=-Xms1g -Xmx1g"

  rabbitmq:
    image: rabbitmq:3-management
    networks:
      - backend
    volumes:
      - rabbitmq-data:/var/lib/rabbitmq
    environment:
      - RABBITMQ_DEFAULT_USER=guest
      - RABBITMQ_DEFAULT_PASS=guest

  # Monitoring
  prometheus:
    image: prom/prometheus
    networks:
      - monitoring
    volumes:
      - prometheus-data:/prometheus
      - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml:ro

networks:
  frontend:
    driver: bridge
    ipam:
      config:
        - subnet: 172.20.0.0/24
  backend:
    driver: bridge
    internal: true
    ipam:
      config:
        - subnet: 172.21.0.0/24
  user-db-net:
    driver: bridge
    internal: true
  product-db-net:
    driver: bridge
    internal: true
  order-db-net:
    driver: bridge
    internal: true
  monitoring:
    driver: bridge

volumes:
  user-db-data:
  product-db-data:
  order-db-data:
  user-db-config:
  redis-data:
  elasticsearch-data:
  rabbitmq-data:
  prometheus-data:
  user-logs:
  product-logs:
  order-logs:
  product-images:

# docker-compose.ha-database.yml
version: '3.8'

services:
  # PostgreSQL Master
  postgres-master:
    image: postgres:13
    networks:
      - db-cluster
    volumes:
      - postgres-master-data:/var/lib/postgresql/data
      - postgres-master-config:/etc/postgresql
      - ./postgres/master.conf:/etc/postgresql/postgresql.conf:ro
      - ./postgres/pg_hba.conf:/etc/postgresql/pg_hba.conf:ro
    environment:
      - POSTGRES_DB=myapp
      - POSTGRES_USER=app
      - POSTGRES_PASSWORD=password
      - POSTGRES_REPLICATION_MODE=master
      - POSTGRES_REPLICATION_USER=replicator
      - POSTGRES_REPLICATION_PASSWORD=repl_password
    command: |
      postgres
      -c config_file=/etc/postgresql/postgresql.conf
      -c hba_file=/etc/postgresql/pg_hba.conf

  # PostgreSQL Slave 1
  postgres-slave1:
    image: postgres:13
    networks:
      - db-cluster
    volumes:
      - postgres-slave1-data:/var/lib/postgresql/data
    environment:
      - POSTGRES_REPLICATION_MODE=slave
      - POSTGRES_MASTER_HOST=postgres-master
      - POSTGRES_REPLICATION_USER=replicator
      - POSTGRES_REPLICATION_PASSWORD=repl_password
    depends_on:
      - postgres-master

  # PostgreSQL Slave 2
  postgres-slave2:
    image: postgres:13
    networks:
      - db-cluster
    volumes:
      - postgres-slave2-data:/var/lib/postgresql/data
    environment:
      - POSTGRES_REPLICATION_MODE=slave
      - POSTGRES_MASTER_HOST=postgres-master
      - POSTGRES_REPLICATION_USER=replicator
      - POSTGRES_REPLICATION_PASSWORD=repl_password
    depends_on:
      - postgres-master

  # PgBouncer Connection Pooler
  pgbouncer:
    image: pgbouncer/pgbouncer
    networks:
      - db-cluster
      - app-network
    volumes:
      - ./pgbouncer/pgbouncer.ini:/etc/pgbouncer/pgbouncer.ini:ro
      - ./pgbouncer/userlist.txt:/etc/pgbouncer/userlist.txt:ro
    environment:
      - DATABASES_HOST=postgres-master
      - DATABASES_PORT=5432
      - DATABASES_USER=app
      - DATABASES_PASSWORD=password
      - DATABASES_DBNAME=myapp
    depends_on:
      - postgres-master

  # HAProxy for Load Balancing
  haproxy:
    image: haproxy:2.6
    networks:
      - db-cluster
      - app-network
    volumes:
      - ./haproxy/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg:ro
    ports:
      - "5432:5432"  # PostgreSQL
      - "8404:8404"  # Stats
    depends_on:
      - postgres-master
      - postgres-slave1
      - postgres-slave2

networks:
  db-cluster:
    driver: bridge
    internal: true
  app-network:
    driver: bridge

volumes:
  postgres-master-data:
    driver: local
    driver_opts:
      type: ext4
      o: noatime
  postgres-slave1-data:
    driver: local
  postgres-slave2-data:
    driver: local
  postgres-master-config:
    driver: local

# docker-compose.glusterfs.yml
version: '3.8'

services:
  # GlusterFS Node 1
  gluster1:
    image: gluster/gluster-centos
    privileged: true
    networks:
      storage-network:
        ipv4_address: 172.25.0.10
    volumes:
      - gluster1-data:/data
      - /sys/fs/cgroup:/sys/fs/cgroup:ro
    hostname: gluster1

  # GlusterFS Node 2
  gluster2:
    image: gluster/gluster-centos
    privileged: true
    networks:
      storage-network:
        ipv4_address: 172.25.0.11
    volumes:
      - gluster2-data:/data
      - /sys/fs/cgroup:/sys/fs/cgroup:ro
    hostname: gluster2

  # GlusterFS Node 3
  gluster3:
    image: gluster/gluster-centos
    privileged: true
    networks:
      storage-network:
        ipv4_address: 172.25.0.12
    volumes:
      - gluster3-data:/data
      - /sys/fs/cgroup:/sys/fs/cgroup:ro
    hostname: gluster3

  # Application using GlusterFS
  app:
    image: myapp
    networks:
      - storage-network
      - app-network
    volumes:
      - type: volume
        source: distributed-storage
        target: /app/data
        volume:
          driver: local
          driver_opts:
            type: glusterfs
            o: "addr=172.25.0.10:172.25.0.11:172.25.0.12"
            device: "gv0"
    depends_on:
      - gluster1
      - gluster2
      - gluster3

networks:
  storage-network:
    driver: bridge
    ipam:
      config:
        - subnet: 172.25.0.0/24
  app-network:
    driver: bridge

volumes:
  gluster1-data:
  gluster2-data:
  gluster3-data:
  distributed-storage:
    external: true

# docker-compose.ceph.yml
version: '3.8'

services:
  # Ceph Monitor
  ceph-mon:
    image: ceph/ceph:latest
    networks:
      - ceph-network
    volumes:
      - ceph-mon-data:/var/lib/ceph/mon
      - ceph-config:/etc/ceph
    environment:
      - MON_IP=172.26.0.10
      - CEPH_PUBLIC_NETWORK=172.26.0.0/24
    command: mon

  # Ceph OSD 1
  ceph-osd1:
    image: ceph/ceph:latest
    privileged: true
    networks:
      - ceph-network
    volumes:
      - ceph-osd1-data:/var/lib/ceph/osd
      - ceph-config:/etc/ceph
    environment:
      - OSD_DEVICE=/dev/loop0
      - OSD_TYPE=directory
    depends_on:
      - ceph-mon
    command: osd

  # Ceph OSD 2
  ceph-osd2:
    image: ceph/ceph:latest
    privileged: true
    networks:
      - ceph-network
    volumes:
      - ceph-osd2-data:/var/lib/ceph/osd
      - ceph-config:/etc/ceph
    environment:
      - OSD_DEVICE=/dev/loop1
      - OSD_TYPE=directory
    depends_on:
      - ceph-mon
    command: osd

  # Ceph MDS (Metadata Server)
  ceph-mds:
    image: ceph/ceph:latest
    networks:
      - ceph-network
    volumes:
      - ceph-mds-data:/var/lib/ceph/mds
      - ceph-config:/etc/ceph
    depends_on:
      - ceph-mon
    command: mds

networks:
  ceph-network:
    driver: bridge
    ipam:
      config:
        - subnet: 172.26.0.0/24

volumes:
  ceph-mon-data:
  ceph-osd1-data:
  ceph-osd2-data:
  ceph-mds-data:
  ceph-config:

# docker-compose.zero-trust.yml
version: '3.8'

services:
  # Istio Proxy (Envoy)
  istio-proxy:
    image: istio/proxyv2:latest
    networks:
      - service-mesh
    volumes:
      - ./istio/envoy.yaml:/etc/envoy/envoy.yaml:ro
      - istio-certs:/etc/ssl/certs
    command: |
      /usr/local/bin/envoy
      -c /etc/envoy/envoy.yaml
      --service-cluster proxy

  # Application with mTLS
  secure-app:
    build: ./secure-app
    networks:
      - service-mesh
    volumes:
      - app-certs:/app/certs:ro
    environment:
      - TLS_CERT_FILE=/app/certs/app.crt
      - TLS_KEY_FILE=/app/certs/app.key
      - CA_CERT_FILE=/app/certs/ca.crt

  # Certificate Authority
  cert-manager:
    image: jetstack/cert-manager-controller:latest
    networks:
      - service-mesh
    volumes:
      - ca-data:/var/lib/cert-manager
      - ./cert-manager/config.yaml:/etc/cert-manager/config.yaml:ro

  # Network Policy Controller
  network-policy:
    image: calico/kube-controllers:latest
    networks:
      - service-mesh
    volumes:
      - ./network-policies:/etc/calico/policies:ro
    environment:
      - ENABLED_CONTROLLERS=policy

networks:
  service-mesh:
    driver: bridge
    driver_opts:
      com.docker.network.bridge.enable_icc: "false"
    ipam:
      config:
        - subnet: 172.27.0.0/24

volumes:
  istio-certs:
  app-certs:
  ca-data:

# docker-compose.performance.yml
version: '3.8'

services:
  # Nginx with optimized configuration
  nginx:
    image: nginx:alpine
    ports:
      - "80:80"
      - "443:443"
    networks:
      - frontend
    volumes:
      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
      - nginx-cache:/var/cache/nginx
      - type: tmpfs
        target: /tmp
        tmpfs:
          size: 512M
    sysctls:
      - net.core.somaxconn=65535
      - net.ipv4.tcp_max_syn_backlog=65535
    ulimits:
      nofile:
        soft: 65535
        hard: 65535

  # Application with performance tuning
  app:
    build: ./app
    networks:
      - frontend
      - backend
    volumes:
      - app-data:/app/data
      - type: tmpfs
        target: /app/tmp
        tmpfs:
          size: 1G
    environment:
      - NODE_ENV=production
      - UV_THREADPOOL_SIZE=128
    sysctls:
      - net.core.rmem_max=134217728
      - net.core.wmem_max=134217728
    deploy:
      resources:
        limits:
          cpus: '2.0'
          memory: 4G
        reservations:
          cpus: '1.0'
          memory: 2G

  # Redis with performance optimization
  redis:
    image: redis:7-alpine
    networks:
      - backend
    volumes:
      - redis-data:/data
    command: |
      redis-server
      --maxmemory 2gb
      --maxmemory-policy allkeys-lru
      --tcp-backlog 511
      --tcp-keepalive 300
      --save 900 1
      --save 300 10
      --save 60 10000
    sysctls:
      - net.core.somaxconn=65535

  # PostgreSQL with performance tuning
  postgres:
    image: postgres:13
    networks:
      - backend
    volumes:
      - postgres-data:/var/lib/postgresql/data
      - postgres-wal:/var/lib/postgresql/wal
      - type: tmpfs
        target: /tmp
        tmpfs:
          size: 2G
    environment:
      - POSTGRES_INITDB_WALDIR=/var/lib/postgresql/wal
    command: |
      postgres
      -c shared_buffers=1GB
      -c effective_cache_size=3GB
      -c maintenance_work_mem=256MB
      -c checkpoint_completion_target=0.9
      -c wal_buffers=16MB
      -c default_statistics_target=100
      -c random_page_cost=1.1
      -c effective_io_concurrency=200
      -c work_mem=4MB
      -c min_wal_size=1GB
      -c max_wal_size=4GB

networks:
  frontend:
    driver: bridge
  backend:
    driver: bridge
    internal: true

volumes:
  nginx-cache:
  app-data:
  redis-data:
  postgres-data:
    driver: local
    driver_opts:
      type: ext4
      o: noatime,nodiratime
  postgres-wal:
    driver: local
    driver_opts:
      type: ext4
      o: noatime,nodiratime,sync

// cni-plugin/main.go
package main

import (
    "encoding/json"
    "fmt"
    "net"
    "os"
    
    "github.com/containernetworking/cni/pkg/skel"
    "github.com/containernetworking/cni/pkg/types"
    "github.com/containernetworking/cni/pkg/version"
)

type NetConf struct {
    types.NetConf
    Bridge   string `json:"bridge"`
    Subnet   string `json:"subnet"`
    Gateway  string `json:"gateway"`
    IPAM     struct {
        Type   string `json:"type"`
        Subnet string `json:"subnet"`
    } `json:"ipam"`
}

func cmdAdd(args *skel.CmdArgs) error {
    conf := NetConf{}
    if err := json.Unmarshal(args.StdinData, &conf); err != nil {
        return fmt.Errorf("failed to parse network configuration: %v", err)
    }
    
    // Create bridge if it doesn't exist
    if err := createBridge(conf.Bridge); err != nil {
        return fmt.Errorf("failed to create bridge: %v", err)
    }
    
    // Allocate IP address
    ip, err := allocateIP(conf.Subnet)
    if err != nil {
        return fmt.Errorf("failed to allocate IP: %v", err)
    }
    
    // Create veth pair
    hostVeth, containerVeth, err := createVethPair(args.ContainerID)
    if err != nil {
        return fmt.Errorf("failed to create veth pair: %v", err)
    }
    
    // Attach host veth to bridge
    if err := attachToBridge(hostVeth, conf.Bridge); err != nil {
        return fmt.Errorf("failed to attach to bridge: %v", err)
    }
    
    // Move container veth to container namespace
    if err := moveToNamespace(containerVeth, args.Netns); err != nil {
        return fmt.Errorf("failed to move to namespace: %v", err)
    }
    
    // Configure container interface
    if err := configureInterface(containerVeth, ip, conf.Gateway, args.Netns); err != nil {
        return fmt.Errorf("failed to configure interface: %v", err)
    }
    
    // Return result
    result := &types.Result{
        IP4: &types.IPConfig{
            IP:      net.IPNet{IP: ip, Mask: net.CIDRMask(24, 32)},
            Gateway: net.ParseIP(conf.Gateway),
        },
    }
    
    return result.Print()
}

func cmdDel(args *skel.CmdArgs) error {
    // Cleanup network resources
    return deleteVethPair(args.ContainerID)
}

func main() {
    skel.PluginMain(cmdAdd, cmdDel, version.All)
}

// Helper functions
func createBridge(name string) error {
    // Implementation for bridge creation
    return nil
}

func allocateIP(subnet string) (net.IP, error) {
    // Implementation for IP allocation
    return net.ParseIP("192.168.1.100"), nil
}

func createVethPair(containerID string) (string, string, error) {
    // Implementation for veth pair creation
    hostVeth := fmt.Sprintf("veth%s", containerID[:8])
    containerVeth := fmt.Sprintf("eth%s", containerID[:8])
    return hostVeth, containerVeth, nil
}

func attachToBridge(veth, bridge string) error {
    // Implementation for bridge attachment
    return nil
}

func moveToNamespace(veth, netns string) error {
    // Implementation for namespace movement
    return nil
}

func configureInterface(iface string, ip net.IP, gateway string, netns string) error {
    // Implementation for interface configuration
    return nil
}

func deleteVethPair(containerID string) error {
    // Implementation for cleanup
    return nil
}

// docker-plugin/main.go
package main

import (
    "encoding/json"
    "fmt"
    "net/http"
    
    "github.com/docker/go-plugins-helpers/network"
)

type CustomDriver struct {
    networks map[string]*NetworkState
}

type NetworkState struct {
    ID       string
    Name     string
    Subnet   string
    Gateway  string
    Bridge   string
}

func (d *CustomDriver) GetCapabilities() (*network.CapabilitiesResponse, error) {
    return &network.CapabilitiesResponse{
        Scope:             network.LocalScope,
        ConnectivityScope: network.LocalScope,
    }, nil
}

func (d *CustomDriver) CreateNetwork(req *network.CreateNetworkRequest) error {
    // Parse network options
    subnet := req.Options["subnet"]
    gateway := req.Options["gateway"]
    bridge := fmt.Sprintf("br-%s", req.NetworkID[:12])
    
    // Create network state
    d.networks[req.NetworkID] = &NetworkState{
        ID:      req.NetworkID,
        Name:    req.NetworkID,
        Subnet:  subnet,
        Gateway: gateway,
        Bridge:  bridge,
    }
    
    // Create actual network infrastructure
    return d.createNetworkInfrastructure(d.networks[req.NetworkID])
}

func (d *CustomDriver) DeleteNetwork(req *network.DeleteNetworkRequest) error {
    state, exists := d.networks[req.NetworkID]
    if !exists {
        return fmt.Errorf("network %s not found", req.NetworkID)
    }
    
    // Cleanup network infrastructure
    if err := d.deleteNetworkInfrastructure(state); err != nil {
        return err
    }
    
    delete(d.networks, req.NetworkID)
    return nil
}

func (d *CustomDriver) CreateEndpoint(req *network.CreateEndpointRequest) (*network.CreateEndpointResponse, error) {
    state := d.networks[req.NetworkID]
    
    // Create endpoint (veth pair, IP allocation, etc.)
    ip, err := d.allocateIP(state.Subnet)
    if err != nil {
        return nil, err
    }
    
    return &network.CreateEndpointResponse{
        Interface: &network.EndpointInterface{
            Address:    ip,
            MacAddress: generateMAC(),
        },
    }, nil
}

func (d *CustomDriver) Join(req *network.JoinRequest) (*network.JoinResponse, error) {
    state := d.networks[req.NetworkID]
    
    // Create veth pair and configure
    hostVeth, containerVeth, err := d.createVethPair(req.EndpointID)
    if err != nil {
        return nil, err
    }
    
    // Attach to bridge
    if err := d.attachToBridge(hostVeth, state.Bridge); err != nil {
        return nil, err
    }
    
    return &network.JoinResponse{
        InterfaceName: network.InterfaceName{
            SrcName:   containerVeth,
            DstPrefix: "eth",
        },
        Gateway: state.Gateway,
    }, nil
}

func (d *CustomDriver) Leave(req *network.LeaveRequest) error {
    // Cleanup endpoint resources
    return d.deleteVethPair(req.EndpointID)
}

func (d *CustomDriver) DeleteEndpoint(req *network.DeleteEndpointRequest) error {
    // Cleanup endpoint state
    return nil
}

func main() {
    driver := &CustomDriver{
        networks: make(map[string]*NetworkState),
    }
    
    handler := network.NewHandler(driver)
    http.ListenAndServe(":8080", handler)
}

// Helper methods
func (d *CustomDriver) createNetworkInfrastructure(state *NetworkState) error {
    // Implementation for creating bridges, iptables rules, etc.
    return nil
}

func (d *CustomDriver) deleteNetworkInfrastructure(state *NetworkState) error {
    // Implementation for cleanup
    return nil
}

func (d *CustomDriver) allocateIP(subnet string) (string, error) {
    // Implementation for IP allocation
    return "192.168.1.100/24", nil
}

func (d *CustomDriver) createVethPair(endpointID string) (string, string, error) {
    // Implementation for veth pair creation
    return "veth" + endpointID[:8], "eth" + endpointID[:8], nil
}

func (d *CustomDriver) attachToBridge(veth, bridge string) error {
    // Implementation for bridge attachment
    return nil
}

func (d *CustomDriver) deleteVethPair(endpointID string) error {
    // Implementation for cleanup
    return nil
}

func generateMAC() string {
    // Implementation for MAC address generation
    return "02:42:ac:11:00:02"
}

# docker-compose.ovs.yml
version: '3.8'

services:
  # OpenVSwitch Database
  ovs-db:
    image: openvswitch/ovs:latest
    privileged: true
    networks:
      - ovs-control
    volumes:
      - ovs-db-data:/var/lib/openvswitch
      - /sys/fs/cgroup:/sys/fs/cgroup:ro
    command: |
      sh -c "
        ovsdb-server --remote=punix:/var/run/openvswitch/db.sock \
                     --remote=db:Open_vSwitch,Open_vSwitch,manager_options \
                     --pidfile --detach
        ovs-vsctl --no-wait init
        tail -f /dev/null
      "

  # OpenVSwitch Daemon
  ovs-vswitchd:
    image: openvswitch/ovs:latest
    privileged: true
    networks:
      - ovs-control
    volumes:
      - ovs-db-data:/var/lib/openvswitch
      - /sys/fs/cgroup:/sys/fs/cgroup:ro
    depends_on:
      - ovs-db
    command: |
      sh -c "
        ovs-vswitchd --pidfile --detach
        tail -f /dev/null
      "

  # SDN Controller (Floodlight)
  sdn-controller:
    image: floodlight/floodlight:latest
    ports:
      - "8080:8080"
      - "6653:6653"
    networks:
      - ovs-control
    volumes:
      - ./floodlight/floodlightdefault.properties:/opt/floodlight/src/main/resources/floodlightdefault.properties:ro

  # Application containers using OVS
  app1:
    image: alpine
    networks:
      - ovs-network
    command: sleep 3600

  app2:
    image: alpine
    networks:
      - ovs-network
    command: sleep 3600

networks:
  ovs-control:
    driver: bridge
  ovs-network:
    driver: ovs
    driver_opts:
      ovs.bridge.name: br-ovs
      ovs.bridge.controller: tcp:sdn-controller:6653

volumes:
  ovs-db-data:

# docker-compose.nfv.yml
version: '3.8'

services:
  # Virtual Firewall
  virtual-firewall:
    build: ./nfv/firewall
    privileged: true
    networks:
      - nfv-mgmt
      - nfv-data
    volumes:
      - ./firewall/rules.conf:/etc/firewall/rules.conf:ro
    environment:
      - INTERFACES=eth0,eth1
      - RULES_FILE=/etc/firewall/rules.conf

  # Virtual Load Balancer
  virtual-lb:
    build: ./nfv/loadbalancer
    networks:
      - nfv-mgmt
      - nfv-data
    volumes:
      - ./lb/haproxy.cfg:/etc/haproxy/haproxy.cfg:ro
    ports:
      - "80:80"
      - "443:443"

  # Virtual Router
  virtual-router:
    build: ./nfv/router
    privileged: true
    networks:
      - nfv-mgmt
      - nfv-data
      - external
    volumes:
      - ./router/quagga.conf:/etc/quagga/quagga.conf:ro
    sysctls:
      - net.ipv4.ip_forward=1

  # Network Monitoring
  network-monitor:
    image: prom/prometheus
    networks:
      - nfv-mgmt
    volumes:
      - ./monitoring/prometheus.yml:/etc/prometheus/prometheus.yml:ro
      - prometheus-data:/prometheus

  # Service Orchestrator
  nfv-orchestrator:
    build: ./nfv/orchestrator
    networks:
      - nfv-mgmt
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - ./orchestrator/config.yaml:/etc/orchestrator/config.yaml:ro
    environment:
      - DOCKER_HOST=unix:///var/run/docker.sock

networks:
  nfv-mgmt:
    driver: bridge
    ipam:
      config:
        - subnet: 10.0.1.0/24
  nfv-data:
    driver: bridge
    ipam:
      config:
        - subnet: 10.0.2.0/24
  external:
    driver: bridge

volumes:
  prometheus-data:

// storage-plugin/main.go
package main

import (
    "encoding/json"
    "fmt"
    "net/http"
    "os"
    "path/filepath"
    
    "github.com/docker/go-plugins-helpers/volume"
)

type CustomVolumeDriver struct {
    volumes map[string]*VolumeState
    root    string
}

type VolumeState struct {
    Name       string
    Path       string
    Options    map[string]string
    Mountpoint string
}

func (d *CustomVolumeDriver) Create(req *volume.CreateRequest) error {
    // Parse options
    volumeType := req.Options["type"]
    size := req.Options["size"]
    encryption := req.Options["encryption"]
    
    // Create volume directory
    volumePath := filepath.Join(d.root, req.Name)
    if err := os.MkdirAll(volumePath, 0755); err != nil {
        return err
    }
    
    // Apply volume-specific configuration
    switch volumeType {
    case "encrypted":
        if err := d.setupEncryption(volumePath, encryption); err != nil {
            return err
        }
    case "compressed":
        if err := d.setupCompression(volumePath); err != nil {
            return err
        }
    case "replicated":
        if err := d.setupReplication(volumePath, req.Options); err != nil {
            return err
        }
    }
    
    // Store volume state
    d.volumes[req.Name] = &VolumeState{
        Name:    req.Name,
        Path:    volumePath,
        Options: req.Options,
    }
    
    return nil
}

func (d *CustomVolumeDriver) Remove(req *volume.RemoveRequest) error {
    state, exists := d.volumes[req.Name]
    if !exists {
        return fmt.Errorf("volume %s not found", req.Name)
    }
    
    // Cleanup volume resources
    if err := d.cleanupVolume(state); err != nil {
        return err
    }
    
    // Remove directory
    if err := os.RemoveAll(state.Path); err != nil {
        return err
    }
    
    delete(d.volumes, req.Name)
    return nil
}

func (d *CustomVolumeDriver) Mount(req *volume.MountRequest) (*volume.MountResponse, error) {
    state, exists := d.volumes[req.Name]
    if !exists {
        return nil, fmt.Errorf("volume %s not found", req.Name)
    }
    
    // Prepare mount point
    mountpoint := filepath.Join("/mnt", req.Name)
    if err := os.MkdirAll(mountpoint, 0755); err != nil {
        return nil, err
    }
    
    // Mount based on volume type
    if err := d.mountVolume(state, mountpoint); err != nil {
        return nil, err
    }
    
    state.Mountpoint = mountpoint
    return &volume.MountResponse{Mountpoint: mountpoint}, nil
}

func (d *CustomVolumeDriver) Unmount(req *volume.UnmountRequest) error {
    state, exists := d.volumes[req.Name]
    if !exists {
        return fmt.Errorf("volume %s not found", req.Name)
    }
    
    // Unmount volume
    if err := d.unmountVolume(state); err != nil {
        return err
    }
    
    state.Mountpoint = ""
    return nil
}

func (d *CustomVolumeDriver) Path(req *volume.PathRequest) (*volume.PathResponse, error) {
    state, exists := d.volumes[req.Name]
    if !exists {
        return nil, fmt.Errorf("volume %s not found", req.Name)
    }
    
    return &volume.PathResponse{Mountpoint: state.Mountpoint}, nil
}

func (d *CustomVolumeDriver) Get(req *volume.GetRequest) (*volume.GetResponse, error) {
    state, exists := d.volumes[req.Name]
    if !exists {
        return nil, fmt.Errorf("volume %s not found", req.Name)
    }
    
    return &volume.GetResponse{
        Volume: &volume.Volume{
            Name:       state.Name,
            Mountpoint: state.Mountpoint,
        },
    }, nil
}

func (d *CustomVolumeDriver) List() (*volume.ListResponse, error) {
    var volumes []*volume.Volume
    
    for _, state := range d.volumes {
        volumes = append(volumes, &volume.Volume{
            Name:       state.Name,
            Mountpoint: state.Mountpoint,
        })
    }
    
    return &volume.ListResponse{Volumes: volumes}, nil
}

func (d *CustomVolumeDriver) Capabilities() *volume.CapabilitiesResponse {
    return &volume.CapabilitiesResponse{
        Capabilities: volume.Capability{Scope: "local"},
    }
}

// Helper methods
func (d *CustomVolumeDriver) setupEncryption(path, algorithm string) error {
    // Implementation for encryption setup
    return nil
}

func (d *CustomVolumeDriver) setupCompression(path string) error {
    // Implementation for compression setup
    return nil
}

func (d *CustomVolumeDriver) setupReplication(path string, options map[string]string) error {
    // Implementation for replication setup
    return nil
}

func (d *CustomVolumeDriver) cleanupVolume(state *VolumeState) error {
    // Implementation for volume cleanup
    return nil
}

func (d *CustomVolumeDriver) mountVolume(state *VolumeState, mountpoint string) error {
    // Implementation for volume mounting
    return nil
}

func (d *CustomVolumeDriver) unmountVolume(state *VolumeState) error {
    // Implementation for volume unmounting
    return nil
}

func main() {
    driver := &CustomVolumeDriver{
        volumes: make(map[string]*VolumeState),
        root:    "/var/lib/custom-volumes",
    }
    
    handler := volume.NewHandler(driver)
    http.ListenAndServe(":8080", handler)
}

// csi-driver/main.go
package main

import (
    "context"
    "fmt"
    "net"
    
    "github.com/container-storage-interface/spec/lib/go/csi"
    "google.golang.org/grpc"
)

type CSIDriver struct {
    name    string
    version string
    nodeID  string
}

// Identity Service
func (d *CSIDriver) GetPluginInfo(ctx context.Context, req *csi.GetPluginInfoRequest) (*csi.GetPluginInfoResponse, error) {
    return &csi.GetPluginInfoResponse{
        Name:          d.name,
        VendorVersion: d.version,
    }, nil
}

func (d *CSIDriver) GetPluginCapabilities(ctx context.Context, req *csi.GetPluginCapabilitiesRequest) (*csi.GetPluginCapabilitiesResponse, error) {
    return &csi.GetPluginCapabilitiesResponse{
        Capabilities: []*csi.PluginCapability{
            {
                Type: &csi.PluginCapability_Service_{
                    Service: &csi.PluginCapability_Service{
                        Type: csi.PluginCapability_Service_CONTROLLER_SERVICE,
                    },
                },
            },
        },
    }, nil
}

func (d *CSIDriver) Probe(ctx context.Context, req *csi.ProbeRequest) (*csi.ProbeResponse, error) {
    return &csi.ProbeResponse{}, nil
}

// Controller Service
func (d *CSIDriver) CreateVolume(ctx context.Context, req *csi.CreateVolumeRequest) (*csi.CreateVolumeResponse, error) {
    volumeID := generateVolumeID()
    
    // Create volume based on parameters
    parameters := req.GetParameters()
    volumeType := parameters["type"]
    size := req.GetCapacityRange().GetRequiredBytes()
    
    volume, err := d.createVolumeBackend(volumeID, volumeType, size, parameters)
    if err != nil {
        return nil, err
    }
    
    return &csi.CreateVolumeResponse{
        Volume: &csi.Volume{
            VolumeId:      volumeID,
            CapacityBytes: size,
            VolumeContext: volume.Context,
        },
    }, nil
}

func (d *CSIDriver) DeleteVolume(ctx context.Context, req *csi.DeleteVolumeRequest) (*csi.DeleteVolumeResponse, error) {
    volumeID := req.GetVolumeId()
    
    if err := d.deleteVolumeBackend(volumeID); err != nil {
        return nil, err
    }
    
    return &csi.DeleteVolumeResponse{}, nil
}

func (d *CSIDriver) ControllerPublishVolume(ctx context.Context, req *csi.ControllerPublishVolumeRequest) (*csi.ControllerPublishVolumeResponse, error) {
    volumeID := req.GetVolumeId()
    nodeID := req.GetNodeId()
    
    publishContext, err := d.attachVolumeToNode(volumeID, nodeID)
    if err != nil {
        return nil, err
    }
    
    return &csi.ControllerPublishVolumeResponse{
        PublishContext: publishContext,
    }, nil
}

// Node Service
func (d *CSIDriver) NodeStageVolume(ctx context.Context, req *csi.NodeStageVolumeRequest) (*csi.NodeStageVolumeResponse, error) {
    volumeID := req.GetVolumeId()
    stagingPath := req.GetStagingTargetPath()
    
    if err := d.stageVolume(volumeID, stagingPath, req.GetPublishContext()); err != nil {
        return nil, err
    }
    
    return &csi.NodeStageVolumeResponse{}, nil
}

func (d *CSIDriver) NodePublishVolume(ctx context.Context, req *csi.NodePublishVolumeRequest) (*csi.NodePublishVolumeResponse, error) {
    volumeID := req.GetVolumeId()
    targetPath := req.GetTargetPath()
    stagingPath := req.GetStagingTargetPath()
    
    if err := d.publishVolume(volumeID, stagingPath, targetPath); err != nil {
        return nil, err
    }
    
    return &csi.NodePublishVolumeResponse{}, nil
}

func (d *CSIDriver) NodeGetCapabilities(ctx context.Context, req *csi.NodeGetCapabilitiesRequest) (*csi.NodeGetCapabilitiesResponse, error) {
    return &csi.NodeGetCapabilitiesResponse{
        Capabilities: []*csi.NodeServiceCapability{
            {
                Type: &csi.NodeServiceCapability_Rpc{
                    Rpc: &csi.NodeServiceCapability_RPC{
                        Type: csi.NodeServiceCapability_RPC_STAGE_UNSTAGE_VOLUME,
                    },
                },
            },
        },
    }, nil
}

func (d *CSIDriver) NodeGetInfo(ctx context.Context, req *csi.NodeGetInfoRequest) (*csi.NodeGetInfoResponse, error) {
    return &csi.NodeGetInfoResponse{
        NodeId: d.nodeID,
    }, nil
}

// Helper methods
func (d *CSIDriver) createVolumeBackend(volumeID, volumeType string, size int64, parameters map[string]string) (*VolumeInfo, error) {
    // Implementation for volume creation
    return &VolumeInfo{
        ID:      volumeID,
        Context: map[string]string{"type": volumeType},
    }, nil
}

func (d *CSIDriver) deleteVolumeBackend(volumeID string) error {
    // Implementation for volume deletion
    return nil
}

func (d *CSIDriver) attachVolumeToNode(volumeID, nodeID string) (map[string]string, error) {
    // Implementation for volume attachment
    return map[string]string{"device": "/dev/sdb"}, nil
}

func (d *CSIDriver) stageVolume(volumeID, stagingPath string, publishContext map[string]string) error {
    // Implementation for volume staging
    return nil
}

func (d *CSIDriver) publishVolume(volumeID, stagingPath, targetPath string) error {
    // Implementation for volume publishing
    return nil
}

type VolumeInfo struct {
    ID      string
    Context map[string]string
}

func generateVolumeID() string {
    return fmt.Sprintf("vol-%d", time.Now().Unix())
}

func main() {
    driver := &CSIDriver{
        name:    "custom.csi.driver",
        version: "1.0.0",
        nodeID:  "node-1",
    }
    
    listener, err := net.Listen("unix", "/tmp/csi.sock")
    if err != nil {
        panic(err)
    }
    
    server := grpc.NewServer()
    csi.RegisterIdentityServer(server, driver)
    csi.RegisterControllerServer(server, driver)
    csi.RegisterNodeServer(server, driver)
    
    server.Serve(listener)
}