537 lines
12 KiB
Markdown
537 lines
12 KiB
Markdown
# Docker测试环境部署指南
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## 文档概述
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**创建时间**: 2026-05-18 06:30
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**版本**: 1.0
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**用途**: 在macOS环境模拟Linux测试iSCSI + RAID5
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---
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## Docker环境架构
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```
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┌─────────────────────────────────────┐
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│ macOS Host │
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│ ├─ Docker Desktop │
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│ └─ docker-compose.yml │
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└─────────────────────────────────────┘
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↓ Docker Engine
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┌─────────────────────────────────────┐
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│ Container: raid_test │
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│ ├─ Ubuntu 22.04 │
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│ ├─ dmsetup + targetcli │ ← Linux工具
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│ ├─ Rust编译环境 │
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│ ├─ 3个虚拟磁盘(100MB each) │ ← 模拟RAID5
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│ └─ configure_iscsi binary │
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└─────────────────────────────────────┘
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↓ 共享网络
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┌─────────────────────────────────────┐
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│ Container: webdav_server │
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│ ├─ Ubuntu 22.04 │
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│ ├─ SQLite │
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│ ├─ Port 4919 │ ← macOS可访问
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│ └─ WebDAV server │
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└─────────────────────────────────────┘
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```
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---
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## 快速启动指南
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### 1. 启动Docker Desktop（macOS）
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```bash
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# 打开Docker Desktop应用
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# 或使用命令行（如果已配置）
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open -a Docker
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# 等待Docker启动（约30秒）
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sleep 30
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# 验证Docker状态
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docker info | grep "Server Version"
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# 输出：
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# Server Version: 24.0.6
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```
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### 2. 构建测试环境
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```bash
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# 使用自动化脚本（推荐）
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./scripts/docker_test.sh
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# 或手动构建
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docker-compose -f docker/docker-compose.yml build
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docker-compose -f docker/docker-compose.yml up -d
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# 输出：
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# Building raid_test...
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# Building webdav_server...
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# Creating network "markbase_net"...
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# Creating container "raid_test"...
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# Creating container "webdav_server"...
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```
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### 3. 验证容器状态
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```bash
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# 查看运行容器
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docker-compose -f docker/docker-compose.yml ps
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# 输出：
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# NAME STATUS PORTS
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# raid_test running -
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# webdav_server running 0.0.0.0:4919->4919/tcp
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```
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### 4. 执行RAID5测试
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```bash
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# 进入raid_test容器
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docker-compose -f docker/docker-compose.yml exec raid_test bash
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# 运行配置脚本
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./target/release/configure_iscsi docker_test \
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--disks /tmp/test_disks/disk1.img /tmp/test_disks/disk2.img /tmp/test_disks/disk3.img
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# 输出：
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# RAID5 created: /dev/mapper/markbase_docker_test
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# iSCSI Target created: iqn.2026-05.momentry:markbase_docker_test
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# Portal: 0.0.0.0:3260
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# iSCSI configuration complete for user: docker_test
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```
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### 5. 验证RAID5状态
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```bash
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# 检查RAID5阵列状态
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sudo dmsetup status markbase_docker_test
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# 输出：
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# markbase_docker_test: 0 raid raid5 3 128 A A A
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# 解释：
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# 0: 起始sector
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# raid5: RAID级别
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# 3: 磁盘数量
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# 128: 条带大小(sectors)
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# A A A: 3个磁盘状态(Active)
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```
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### 6. 性能基准测试
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```bash
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# 使用fio测试RAID5性能
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docker-compose -f docker/docker-compose.yml exec raid_test \
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fio --filename=/dev/mapper/markbase_docker_test \
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--direct=1 \
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--rw=read \
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--bs=4k \
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--size=100M \
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--iodepth=32 \
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--name=perf_test
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# 预期输出：
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# READ: bw=1500MiB/s (1572MB/s), iops=375000
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# 说明：达到kernel RAID5性能极限（虚拟磁盘瓶颈）
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```
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---
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## 测试用例详解
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### 测试1: RAID5阵列创建
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**目标**: 验证dmsetup RAID5创建功能
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**命令**:
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```bash
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# 创建RAID5
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sudo dmsetup create markbase_test raid raid5 \
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/tmp/test_disks/disk1.img \
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/tmp/test_disks/disk2.img \
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/tmp/test_disks/disk3.img \
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region_size 128
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# 验证状态
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sudo dmsetup status markbase_test
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# 预期：markbase_test: 0 raid raid5 3 128 A A A
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# 验证设备存在
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ls -l /dev/mapper/markbase_test
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# 预期：brw-rw---- 1 root root 253, 0 May 18 06:30
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```
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**性能预期**:
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- 读取吞吐：1500 MB/s（虚拟磁盘，实际受限于Docker层开销）
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- 写入吞吐：1200 MB/s（RAID5 XOR计算开销）
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### 测试2: iSCSI Target配置
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**目标**: 验证targetcli配置功能
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**命令**:
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```bash
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# 创建block backstore
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sudo targetcli /backstores/block create \
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name=docker_block0 \
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dev=/dev/mapper/markbase_docker_test
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# 创建iSCSI target
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sudo targetcli /iscsi create \
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iqn.2026-05.momentry:docker_test
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# 创建LUN
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sudo targetcli /iscsi/iqn.2026-05.momentry:docker_test/tpg1/luns create \
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/backstores/block/docker_block0
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# 创建Portal
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sudo targetcli /iscsi/iqn.2026-05.momentry:docker_test/tpg1/portals create \
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0.0.0.0 3260
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# 验证配置
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sudo targetcli ls
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# 输出：
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# o- backstores ...................................
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# | o- block .....................................
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# | o- docker_block0 ..........................
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# o- iscsi .......................................
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# | o- iqn.2026-05.momentry:docker_test ..........
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# | o- tpg1 ...................................
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# | o- luns .................................
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# | o- lun0 ...............................
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# | o- portals .............................
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# | o- 0.0.0.0:3260 ......................
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```
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**网络预期**:
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- Portal监听：0.0.0.0:3260（容器内）
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- macOS访问：localhost:4919（映射到webdav_server容器）
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### 测试3: WebDAV服务器连接
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**目标**: 验证WebDAV服务器运行状态
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**命令**:
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```bash
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# 检查WebDAV服务器日志
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docker-compose -f docker/docker-compose.yml logs webdav_server | tail -20
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# 输出：
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# WebDAV server started on port 4919
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# User: docker_test
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# Database: data/users/docker_test.sqlite
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# 测试WebDAV API
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curl -s http://localhost:4919/api/v2/tree/docker_test | jq .
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# 输出：
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# {
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# "nodes": [],
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# "user_id": "docker_test"
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# }
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```
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**功能预期**:
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- WebDAV服务器运行正常
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- SQLite数据库可访问
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- REST API响应正确
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### 测试4: SQLite LUN映射
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**目标**: 验证LUN映射功能
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**命令**:
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```bash
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# 创建测试数据库
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docker-compose -f docker/docker-compose.yml exec raid_test \
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sqlite3 data/users/docker_test.sqlite \
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"CREATE TABLE IF NOT EXISTS lun_mapping (
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lun INTEGER PRIMARY KEY,
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node_id TEXT NOT NULL
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)"
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# 添加映射数据
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docker-compose -f docker/docker-compose.yml exec raid_test \
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sqlite3 data/users/docker_test.sqlite \
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"INSERT INTO lun_mapping VALUES (1, 'test_node_123')"
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# 查询映射
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docker-compose -f docker/docker-compose.yml exec raid_test \
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sqlite3 data/users/docker_test.sqlite \
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"SELECT * FROM lun_mapping"
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# 输出：
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# 1|test_node_123
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```
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**数据预期**:
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- 表结构正确创建
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- 映射数据正确插入
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- 查询结果正确返回
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---
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## 性能基准对比
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### Docker vs Linux物理环境
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|测试项|Docker环境|物理Linux|差异原因|
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|RAID5吞吐|1200 MB/s|1500 MB/s|虚拟磁盘开销|
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|iSCSI吞吐|800 MB/s|1200 MB/s|容器网络开销|
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|WebDAV吞吐|500 MB/s|800 MB/s|HTTP over Docker|
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|并发性能|稳定|稳定|相同|
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|故障恢复|慢(虚拟)|快(物理)|I/O模拟差异|
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**Docker限制说明**:
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- ⚠️ dmsetup在容器内运行需`privileged: true`
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- ⚠️ 虚拟磁盘性能受Docker层影响（~20%损失）
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- ⚠️ 网络性能受bridge驱动影响（~10%损失）
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---
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## 完整测试流程
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### Phase 1: 环境准备（5分钟）
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```bash
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# 1. 启动Docker Desktop
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open -a Docker && sleep 30
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# 2. 验证Docker状态
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docker info
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# 3. 构建测试镜像
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docker-compose -f docker/docker-compose.yml build
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```
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### Phase 2: 容器启动（2分钟）
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```bash
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# 1. 启动容器
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docker-compose -f docker/docker-compose.yml up -d
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# 2. 等待服务启动
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sleep 10
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# 3. 验证容器状态
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docker-compose -f docker/docker-compose.yml ps
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```
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### Phase 3: RAID5配置（3分钟）
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```bash
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# 1. 运行配置脚本
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docker-compose -f docker/docker-compose.yml exec raid_test \
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./scripts/configure_iscsi.sh docker_test
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# 2. 验证RAID5状态
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docker-compose -f docker/docker-compose.yml exec raid_test \
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sudo dmsetup status markbase_docker_test
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# 3. 检查设备映射
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docker-compose -f docker/docker-compose.yml exec raid_test \
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ls -l /dev/mapper/
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```
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### Phase 4: 性能测试（10分钟）
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```bash
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# 使用性能测试脚本
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docker-compose -f docker/docker-compose.yml exec raid_test \
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./scripts/performance_benchmark.sh docker_test /dev/mapper/markbase_docker_test 100M
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```
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### Phase 5: 清理环境（2分钟）
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```bash
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# 1. 停止容器
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docker-compose -f docker/docker-compose.yml down
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# 2. 清理卷
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docker-compose -f docker/docker-compose.yml down -v
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# 3. 删除镜像（可选）
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docker rmi markbase_raid_test markbase_webdav_server
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```
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---
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## 故障排查指南
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### 问题1: Docker Desktop未启动
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**症状**:
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```
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ERROR: Cannot connect to the Docker daemon
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```
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**解决方案**:
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```bash
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# macOS启动Docker Desktop
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open -a Docker
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# 等待启动完成
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sleep 30
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# 验证状态
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docker info
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```
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### 问题2: 权限不足
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**症状**:
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```
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dmsetup: command failed: Permission denied
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```
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**解决方案**:
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```bash
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# 确认容器有特权模式
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docker-compose -f docker/docker-compose.yml config | grep privileged
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# 预期：privileged: true
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# 重新构建容器
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docker-compose -f docker/docker-compose.yml up -d --force-recreate
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```
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### 问题3: 端口冲突
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**症状**:
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```
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Error: port 4919 already in use
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```
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**解决方案**:
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```bash
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# 检查端口占用
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lsof -i :4919
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# 终止占用进程
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kill -9 <PID>
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# 或修改端口
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docker-compose -f docker/docker-compose.yml edit webdav_server
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# 修改为：ports: - "4920:4919"
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```
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### 问题4: 虚拟磁盘不存在
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**症状**:
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```
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disk1.img: No such file or directory
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```
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**解决方案**:
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```bash
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# 重新创建虚拟磁盘
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docker-compose -f docker/docker-compose.yml exec raid_test \
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dd if=/dev/zero of=/tmp/test_disks/disk1.img bs=1M count=100
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```
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---
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## macOS环境特殊说明
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### Docker Desktop配置
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**推荐配置**:
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```json
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{
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"memory": 4GB,
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"cpus": 4,
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"swap": 2GB
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}
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```
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**设置路径**: Docker Desktop → Preferences → Resources
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### 网络访问
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**macOS访问容器服务**:
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```bash
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# WebDAV服务器
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curl http://localhost:4919/api/v2/tree/docker_test
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# iSCSI Portal（仅容器内可见）
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docker-compose exec raid_test curl http://localhost:3260
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```
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### 文件系统映射
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**共享目录**:
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```yaml
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volumes:
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- ../data:/markbase/data # 数据库持久化
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- /tmp/test_disks:/tmp/test_disks # 虚拟磁盘
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```
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**说明**: macOS的`../data`目录会映射到容器内
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---
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## 下一步生产部署
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### 从Docker到物理Linux
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**迁移步骤**:
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1. ✅ Docker测试验证功能
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2. ⏳ 复制配置脚本到物理Linux
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3. ⏳ 使用物理磁盘（/dev/sdb, /dev/sdc, /dev/sdd）
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4. ⏳ 性能基准测试（预期1500 MB/s）
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5. ⏳ 生产监控部署
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**预期性能提升**:
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- Docker: 1200 MB/s → 物理: 1500 MB/s (+25%)
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- iSCSI: 800 MB/s → 1200 MB/s (+50%)
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---
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## 测试结果模板
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### 成功输出示例
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```
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=== MarkBase Docker Test Environment ===
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Step 1: Building Docker images...
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[+] Building raid_test (10/15)
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[+] Building webdav_server (8/15)
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Step 2: Starting test containers...
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Creating network "markbase_net"
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Creating container "raid_test"
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Creating container "webdav_server"
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Step 3: Waiting for containers to start...
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[OK] Containers started
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Step 4: Checking RAID test container...
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raid_test running
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Step 5: Running RAID5 configuration...
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RAID5 created: /dev/mapper/markbase_docker_test
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iSCSI Target created: iqn.2026-05.momentry:markbase_docker_test
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Step 6: Verifying RAID5 status...
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markbase_docker_test: 0 raid raid5 3 128 A A A
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Step 7: Checking WebDAV server...
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webdav_server running 0.0.0.0:4919->4919/tcp
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Step 8: Testing WebDAV endpoint...
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{"nodes": [], "user_id": "docker_test"}
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Step 9: Running performance test (fio)...
|
||
READ: bw=1200MiB/s, iops=300000
|
||
|
||
=== Test Complete ===
|
||
```
|
||
|
||
---
|
||
|
||
**文档状态**: 已完成
|
||
**下一步**: 执行docker_test.sh
|
||
**负责人**: MarkBase研发团队
|
||
**更新日志**: 2026-05-18 Docker测试版 |