Docker容器获取宿主机信息

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  /// 
  2     /// 注册帮助类
  3     /// 
  4     public class RegisterHelper
  5     {
  6         // 机器指纹字符串
  7         private static string m_FingerPrintString = string.Empty;
  8 
  9         /// 
 10         /// Get a string Unique Identification code of a computer
 11         /// 
 12         /// 
 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         /// 
 24         /// First enabled network card ID
 25         /// 
 26         /// 
 27         public static string GetMacId()
 28         {
 29             return Identifier("Win32_NetworkAdapterConfiguration", "MACAddress", "IPEnabled");
 30         }
 31 
 32         /// 
 33         /// Get the cpuID
 34         /// 
 35         /// 
 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         /// 
 59         /// BIOS Identifier
 60         /// 
 61         /// 
 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         /// 
 71         /// Main physical hard drive ID
 72         /// 
 73         /// 
 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         /// 
 81         /// Motherboard ID
 82         /// 
 83         /// 
 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         /// 
 92         /// Primary video controller ID
 93         /// 
 94         /// 
 95         private static string GetVideoId()
 96         {
 97             return Identifier("Win32_VideoController", "Name") + " | " + Identifier("Win32_VideoController", "AdapterRAM");
 98         }
 99 
100         /// 
101         /// Return a hardware identifier
102         /// 
103         /// 
104         /// 
105         /// 
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         /// 
131         /// Return a hardware identifier
132         /// 
133         /// 
134         /// 
135         /// 
136         /// 
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     }

Linux 获取设备信息帮助类

 1  public class LinuxHelper
 2     {
 3 
 4         // sudo dmidecode -t 4 | grep ID | tail -1               // CPUID
 5 
 6         // 系统
 7         // sudo dmidecode -s system-serial-number                // 查看系统序列号
 8         // sudo dmidecode -s system-uuid                         // 查看系统UUID
 9         // sudo dmidecode -s system-product-name                 // 查看服务器系统型号
10         // sudo dmidecode -s processor-manufacturer | tail -1    // 处理器厂家
11 
12         // 主板
13         // sudo dmidecode -s baseboard-product-name              // 主板型号
14         // sudo dmidecode -s baseboard-serial-number             // 主板序列号
15         // sudo dmidecode -s baseboard-manufacturer              // 主板厂家
16 
17         /// 
18         /// Get a string Unique Identification code of a computer
19         /// 
20         /// 
21         public static string StringValue()
22         {
23             string cpuID = GetCpuId();
24             string serialNumber = GetSerialNumber();
25             string productName = GetProductName();
26             string processorManufacturer = GetProcessorManufacturer();
27             if (string.IsNullOrWhiteSpace(cpuID) && string.IsNullOrWhiteSpace(serialNumber) && string.IsNullOrWhiteSpace(productName) && string.IsNullOrWhiteSpace(processorManufacturer)) 
28             {
29                 return string.Empty;
30             }
31             return "CPU >> " + cpuID + "\nSerialNumber >> " + serialNumber + "\nProductName >> " + productName + "\nProcessorManufacturer >> " + processorManufacturer;
32         }
33 
34 
35         /// 
36         /// Get the cpuID
37         /// 
38         /// 
39         private static string GetCpuId()
40         {
41             return ProcessShell("dmidecode -t 4 | grep ID | tail -1");
42         }
43 
44         /// 
45         /// SerialNumber
46         /// 
47         /// 
48         private static string GetSerialNumber()
49         {
50             return ProcessShell("dmidecode -s system-serial-number");
51         }
52 
53         /// 
54         /// product-name
55         /// 
56         /// 
57         private static string GetProductName()
58         {
59             return ProcessShell("dmidecode -s system-product-name");
60         }
61 
62         /// 
63         /// ProcessorManufacturer
64         /// 
65         /// 
66         private static string GetProcessorManufacturer()
67         {
68             return ProcessShell("dmidecode -s processor-manufacturer | tail -1");
69         }
70 
71         /// 
72         ///  执行Shell命令
73         /// 
74         /// 
75         /// 
76         private static string ProcessShell(string shellCmd)
77         {
78             string result = string.Empty;
79             try
80             {
81                 using Process process = new Process
82                 {
83                     StartInfo = new ProcessStartInfo("/bin/bash", "")
84                 };
85                 process.StartInfo.RedirectStandardInput = true;
86                 process.StartInfo.RedirectStandardOutput = true;
87                 process.StartInfo.UseShellExecute = false;
88                 process.Start();
89                 process.StandardInput.WriteLine(shellCmd);
90                 process.StandardInput.Close();
91                 result = process.StandardOutput.ReadToEnd();
92                 process.WaitForExit();
93             }
94             catch (Exception e)
95             {
96                 LogSingleton.CreateInstance().Error(e, "Linux获取硬件信息失败");
97             }
98             return result;
99         }

^{补充：方案二在实际测试中，发布在Ubuntu 22.04 TSL版本中获取宿主机信息失败。大致错误为找不到相关文件。}

最终采取的方式为在容器中获取授权服务容器的ID,以此作为唯一标识(具体采用哪种方式看自己的实际应用环境)

关键代码

 1      /// 
 2         /// 获取所有容器信息
 3         /// 
 4         /// 
 5         private static List GetContainerList()
 6         {
 7             string apiVersion = Environment.GetEnvironmentVariable("DockerApiVersin", EnvironmentVariableTarget.Process);
 8             apiVersion = string.IsNullOrWhiteSpace(apiVersion) ? "1.37" : apiVersion;
 9             string result = ProcessShell($"curl --unix-socket /var/run/docker.sock http://172.17.0.1/v{apiVersion}/containers/json");
10             return JsonConvert.DeserializeObject>(result);
11         }

1  IList containers = GetContainerList();
2             ContainerListResponse containerListResponse = containers.FirstOrDefault(c => c.Names.Any(n => n.Contains("tuguan-server-license")));
3             return containerListResponse?.ID;

// 目录挂载

-v /var/run/docker.sock:/var/run/docker.sock

参考信息：https://blog.csdn.net/qq_42910468/article/details/121387411

https://blog.csdn.net/weixin_42173451/article/details/123085460

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原文地址：https://www.cnblogs.com/saodiseng2015/p/16741737.html