Docker容器获取宿主机信息
作者：互联网
最近在做产品授权的东西，开始宿主机为Window,程序获取机器硬件信息相对简单些，后来部署时发现各种各样的的环境问题，所有后来改用dokcer部署,docker方式获取宿主机信息时花了些时间，特此记录一下
docker 获取宿主机的信息
// dmidecode -t 4 | grep ID | tail -1 // CPUID
// 系统
// dmidecode -s system-serial-number // 查看系统序列号
// dmidecode -s system-uuid // 查看系统UUID
// dmidecode -s system-product-name //查看服务器系统型号
// dmidecode -s processor-manufacturer | tail -1 // 处理器厂家
// 主板
// dmidecode -s baseboard-product-name // 主板型号
// dmidecode -s baseboard-serial-number // 主板序列号
// dmidecode -s baseboard-manufacturer // 主板厂家
实际项目当中，我获取了CPUID、系统序列号、系统UUID、系统型号、处理器厂家，之所有获取这么多信息标识机器，是考虑到有些信息在某些系统可能为空，而且CPUID也不唯一了，所以就多获取些。
调查下来，docker 获取宿主机信息大体可以通过三种方式
- 通过环境变量由外部传入容器内
-
使用挂载宿主机目录方式
- 在容器中使用ssh连接到主机
一：通过环境变量由外部传入容器内
大体思路是docker 支持通过-e来传递参数到容器内部程序，就像安装docker-mysql那样密码可以通过参数传递一样
- 在DockeFile中增加环境变量配置节点 (此步骤主要用来设置参数默认,也可以省略，通过其它方式设置)
- 在程序启动时应用获取程序变量并应用
- 在docker run 时通过-e参数传递到容器中
二：使用挂载宿主机目录方式
确保宿主机能执行dmidecode命令（必须）
将宿主机的如下两个目录挂载到容器中
// dmidecode程序的目录，如果不挂载那么容器中识别不了dmidecode命令 /usr/sbin/dmidecode或者/sbin/dmidecode // dmidecode调用时会使用到mem这个文件，如果不挂载会找不到文件 /dev/mem
在容器启动时增加 --privileged = true参数，让容器获得近似于宿主机root的权限
三：在容器中使用ssh连接到主机
思路：在docker容器内安装ssh,sshpass服务,通过ssh连接到宿主机执行命令，获 取宿主机信息（必须知道宿主机Ip和密码）
步骤：
- 安装服务 yum -y install openssh-server
- 修改配置 vim /etc/ssh/sshd_config PermitRootLogin的值修改为yes保存退出
- 启动ssh服务 systemctl start sshd.service
- 设置开机启动 systemctl enable sshd.service
- 安装sshpass yum -y install sshpass
Window 获取设备信息帮助类
1 /// <summary>
2 /// 注册帮助类
3 /// </summary>
4 public class RegisterHelper
5 {
6 // 机器指纹字符串
7 private static string m_FingerPrintString = string.Empty;
8
9 /// <summary>
10 /// Get a string Unique Identification code of a computer
11 /// </summary>
12 /// <returns></returns>
13 public static string StringValue(string mac)
14 {
15 if (string.IsNullOrEmpty(m_FingerPrintString))
16 {
17 m_FingerPrintString = "MAC >> " + mac + "\nCPU >> " + GetCpuId() + "\nBIOS >> " + GetBiosId() + "\nBASE >> " + GetBaseId()
18 + "\nDISK >> " + GetDiskId() + "\nVIDEO >> " + GetVideoId();
19 }
20 return m_FingerPrintString;
21 }
22
23 /// <summary>
24 /// First enabled network card ID
25 /// </summary>
26 /// <returns></returns>
27 public static string GetMacId()
28 {
29 return Identifier("Win32_NetworkAdapterConfiguration", "MACAddress", "IPEnabled");
30 }
31
32 /// <summary>
33 /// Get the cpuID
34 /// </summary>
35 /// <returns></returns>
36 private static string GetCpuId()
37 {
38 //Uses first CPU identifier available in order of preference
39 //Don't get all identifiers, as it is very time consuming
40 string retVal = Identifier("Win32_Processor", "UniqueId");
41 if (string.IsNullOrEmpty(retVal)) //If no UniqueID, use ProcessorID
42 {
43 retVal = Identifier("Win32_Processor", "ProcessorId");
44 if (string.IsNullOrEmpty(retVal)) //If no ProcessorId, use Name
45 {
46 retVal = Identifier("Win32_Processor", "Name");
47 if (string.IsNullOrEmpty(retVal)) //If no Name, use Manufacturer
48 {
49 retVal = Identifier("Win32_Processor", "Manufacturer");
50 }
51 //Add clock speed for extra security
52 retVal += Identifier("Win32_Processor", "MaxClockSpeed");
53 }
54 }
55 return retVal;
56 }
57
58 /// <summary>
59 /// BIOS Identifier
60 /// </summary>
61 /// <returns></returns>
62 private static string GetBiosId()
63 {
64 return Identifier("Win32_BIOS", "Manufacturer") + " | " + Identifier("Win32_BIOS", "SMBIOSBIOSVersion")
65 + " | " + Identifier("Win32_BIOS", "IdentificationCode") + " | " + Identifier("Win32_BIOS", "SerialNumber")
66 + " | " + Identifier("Win32_BIOS", "ReleaseDate") + " | " + Identifier("Win32_BIOS", "Version")
67 + " | " + Identifier("Win32_BIOS", "Name");
68 }
69
70 /// <summary>
71 /// Main physical hard drive ID
72 /// </summary>
73 /// <returns></returns>
74 private static string GetDiskId()
75 {
76 return Identifier("Win32_DiskDrive", "Model") + " | " + Identifier("Win32_DiskDrive", "SerialNumber")
77 + " | " + Identifier("Win32_DiskDrive", "Signature") + " | " + Identifier("Win32_DiskDrive", "TotalHeads");
78 }
79
80 /// <summary>
81 /// Motherboard ID
82 /// </summary>
83 /// <returns></returns>
84 private static string GetBaseId()
85 {
86 return Identifier("Win32_BaseBoard", "Model") + " | " + Identifier("Win32_BaseBoard", "Manufacturer")
87 + " | " + Identifier("Win32_BaseBoard", "Name") + " | " + Identifier("Win32_BaseBoard", "SerialNumber")
88 + " | " + Identifier("Win32_BaseBoard", "SKU") + " | " + Identifier("Win32_BaseBoard", "Product");
89 }
90
91 /// <summary>
92 /// Primary video controller ID
93 /// </summary>
94 /// <returns></returns>
95 private static string GetVideoId()
96 {
97 return Identifier("Win32_VideoController", "Name") + " | " + Identifier("Win32_VideoController", "AdapterRAM");
98 }
99
100 /// <summary>
101 /// Return a hardware identifier
102 /// </summary>
103 /// <param name="wmiClass"></param>
104 /// <param name="wmiProperty"></param>
105 /// <returns></returns>
106 private static string Identifier(string wmiClass, string wmiProperty)
107 {
108 string result = string.Empty;
109 System.Management.ManagementClass mc = new System.Management.ManagementClass(wmiClass);
110 System.Management.ManagementObjectCollection moc = mc.GetInstances();
111 foreach (System.Management.ManagementObject mo in moc)
112 {
113 //Only get the first one
114 if (string.IsNullOrEmpty(result))
115 {
116 try
117 {
118 result = mo[wmiProperty]?.ToString();
119 break;
120 }
121 catch(Exception e)
122 {
123 LogSingleton.CreateInstance().Error(e, "Window获取硬件信息失败");
124 }
125 }
126 }
127 return result;
128 }
129
130 /// <summary>
131 /// Return a hardware identifier
132 /// </summary>
133 /// <param name="wmiClass"></param>
134 /// <param name="wmiProperty"></param>
135 /// <param name="wmiMustBeTrue"></param>
136 /// <returns></returns>
137 private static string Identifier(string wmiClass, string wmiProperty, string wmiMustBeTrue)
138 {
139 string result = string.Empty;
140 System.Management.ManagementClass mc = new System.Management.ManagementClass(wmiClass);
141 System.Management.ManagementObjectCollection moc = mc.GetInstances();
142 foreach (System.Management.ManagementObject mo in moc)
143 {
144 if (mo[wmiMustBeTrue].ToString() == "True")
145 {
146 //Only get the first one
147 if (string.IsNullOrEmpty(result))
148 {
149 try
150 {
151 result = mo[wmiProperty]?.ToString();
152 break;
153 }
154 catch(Exception e)
155 {
156 LogSingleton.CreateInstance().Error(e,"Window获取硬件信息失败");
157 }
158 }
159 }
160 }
161 return result;
162 }
163 }