# 查看运行中的Hue容器
docker ps -a | grep hue

# 检查容器时区
docker exec <container_name> date

# 检查Hue日志时间格式
docker logs <container_name> --tail 10

# 备份Hue配置文件
cp /data/server/hue-server/config/hue.ini /data/server/hue-server/config/hue.ini.backup.$(date …

brew install --cask iterm2

sh -c "$(curl -fsSL https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"

chsh -s /bin/zsh

brew install rclone

curl https://rclone.org/install.sh | sudo bash

# 计算当前均衡度（标准差）
hdfs dfsadmin -report | python3 -c "
import sys, re
used_percents = []
for line in sys.stdin:
    if 'DFS Used%:' in line:
        percent = float(re.search(r'(\d+\.?\d*)%', line).group(1))
        used_percents.append(percent)
if used_percents:
    avg = sum(used_percents) / len(used_percents)
    variance = sum((x - avg) ** 2 for x in used_percents) / len(used_percents)
    std_dev = variance ** 0.5
    print(f'标准差: {std_dev:.2f}%')
    if std_dev > 15:
        print('⚠️  需要立即均衡')
    elif std_dev > 10:
        print('⚠️  建议进行均衡')
    else:
        print('✅ 集群已均衡')
"

# 标准均衡（推荐）
nohup hdfs balancer -threshold 10 -policy datanode > /tmp/balancer.log 2>&1 &

# 严格均衡
nohup hdfs balancer -threshold 5 -policy datanode > /tmp/balancer.log 2>&1 &

# 宽松均衡
nohup hdfs balancer -threshold …

Redis_Docker/
├── .env                # 环境变量配置文件
├── README.md          # 项目说明文档
├── config/            # 配置文件目录
│   └── redis.conf    # Redis配置文件
├── data/             # 数据存储目录
└── logs/             # 日志文件目录

version: '3.8'

services:
  redis:
    container_name: redis-server
    image: redis:7.2
    ports:
      - "${REDIS_PORT}:6379"
    volumes:
      - ./data:/data
      - ./logs:/var/log/redis
      - ./config/redis.conf:/usr/local/etc/redis/redis.conf
    command: redis-server /usr/local/etc/redis/redis.conf
    environment:
      - TZ=Asia/Shanghai
    networks:
      - redis-network
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s
      timeout: 5s
      retries: 5
      start_period: 5s

networks:
  redis-network:
    driver: bridge

# Redis 配置环境 …

PgSQL_Docker/
├── .env                  # 环境变量配置文件
├── README.md            # 项目说明文档
├── config/              # 配置文件目录
│   ├── pg_hba.conf     # 访问控制配置
│   └── postgresql.conf  # PostgreSQL主配置文件
├── data/               # 数据存储目录
└── logs/               # 日志文件目录

version: '3.8'

services:
  postgres:
    container_name: postgres-server
    image: postgres:15
    environment:
      - POSTGRES_DB=${POSTGRES_DB}
      - POSTGRES_USER=${POSTGRES_USER}
      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
    ports:
      - "${POSTGRES_PORT}:5432"
    volumes:
      - ./data:/var/lib/postgresql/data
      - ./logs:/var/log/postgresql
      - ./config/postgresql.conf:/etc/postgresql/postgresql.conf
      - ./config/pg_hba.conf:/etc/postgresql/pg_hba.conf
    command: postgres -c 'config_file=/etc/postgresql/postgresql.conf'
    networks:
      - postgres-network
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER} -d ${POSTGRES_DB}"]
      interval: 10s
      timeout: 5s …

MySQL_Docker/
├── docker-compose.yml    # Docker Compose 配置文件
├── .env                 # 环境变量配置
├── config/
│   └── my.cnf          # MySQL 配置文件
├── data/               # MySQL 数据目录 (挂载)
└── logs/               # MySQL 日志目录 (挂载)

version: '3.8'
services:
  mysql:
    image: mysql:8.0
    container_name: mysql-server
    restart: unless-stopped
    environment:
      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD:-root123}
      MYSQL_DATABASE: ${MYSQL_DATABASE:-testdb}
      MYSQL_USER: ${MYSQL_USER:-testuser}
      MYSQL_PASSWORD: ${MYSQL_PASSWORD:-testpass}
    ports:
      - "${MYSQL_PORT:-3306}:3306"
    volumes:
      - ./data:/var/lib/mysql
      - ./logs:/var/log/mysql
      - ./config/my.cnf:/etc/mysql/conf.d/my.cnf

# 传统写法
squares = []
for x in range(10):
    squares.append(x**2)

# 列表推导式
squares = [x**2 for x in range(10)]

# 搭配条件过滤
even_squares = [x**2 for x in range(10) if x % 2 == 0]