在 AWS 上调用 lambda function 时出现 DllNotFoundException libgurobi95

Question

我有一个使用 OPTANO.Modeling.Gurobi NuGet package（和 OPTANO.Modeling）的 lambda function。

当我使用 Mock Lambda 测试工具在本地运行代码时，代码运行良好，但是当我将它发布到 AWS 并调用它时，它会返回一个错误，具体取决于我的操作方式。

如果我在 Visual Studio 中通过“发布到 AWS Lambda...”发布，我会得到以下信息：

Unhandled exception. System.DllNotFoundException: Unable to load shared library 'gurobi95' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: libgurobi95: cannot open shared object file: No such file or directory
at Gurobi.GurobiDLL.GRBloadenvadv(IntPtr& env, String logfilename, Int32 apitype, Int32 major, Int32 minor, Int32 tech, String server, String router, String password, String group, Int32 priority, Int32 idletimeout, String cloudid, String cloudkey, cbfunc callback, IntPtr usrdata, logcbfunc logcallback, IntPtr logdata)
at Gurobi.GRBEnv..ctor(String logfilename)
at Gurobi.GRBEnv..ctor()
at OPTANO.Modeling.Optimization.Solver.Gurobi950.GurobiSolver.InitializeEnvironment(GurobiSolverConfiguration configuration)
at OPTANO.Modeling.Optimization.Solver.Gurobi950.GurobiSolver..ctor(GurobiSolverConfiguration configuration)
at Testbed_Primary.Function.FunctionHandler(Boolean writeReportToConsole, Boolean writeWeightsToConsole) in xxxx\Function.cs:line 482
at Testbed_Primary.Function.CalculateStuff() in xxxx\Function.cs:line 118
at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__139_1(Object state)
at System.Threading.QueueUserWorkItemCallbackDefaultContext.Execute()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
05 May 2022 21:31:49,146 [WARN] (invoke@invoke.c:331 errno: None) run_dotnet(dotnet_path, &args) failed

该问题似乎与 gurobi95.dll 有关。 有时它会出现在 zip 文件中，有时不会。 如果我确定它在 zip 文件中，而不是在 AWS 控制台上使用“从...上传”，我会得到以下而不是上面的堆栈跟踪。 Cloudwatch 日志组中没有更多详细信息。

Lambda encountered an UnhandledException via 'AppDomain.CurrentDomain.UnhandledException' event:

它似乎发生在代码中的同一点。 冒号后面什么都没有。 我建议 DLL 有问题，如果使用第一种方法而不是第二种方法上传，AWS 会转储它，这不是因为它在本地运行时工作正常。

我花了很长时间摆弄 DLL 和设置，并在 DLL-not-found 错误上寻求帮助，但我感到困惑。

编辑：将 LD_DEBUG 环境变量设置为“all cat”将以下内容输出到 Cloudwatch 日志。 我不知道这有助于我诊断问题，因为它似乎没有指示任何错误。 我想很多都是无关紧要的。

10: symbol=_ZSt8__copy_nIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEmPcET1_T_T0_SC_St26random_access_iterator_tag;  lookup in file=dotnet [0]
10: symbol=_ZSt8__copy_nIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEmPcET1_T_T0_SC_St26random_access_iterator_tag;  lookup in file=/lib64/libpthread.so.0 [0]
10: symbol=_ZSt8__copy_nIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEmPcET1_T_T0_SC_St26random_access_iterator_tag;  lookup in file=/lib64/libdl.so.2 [0]
10: symbol=_ZSt8__copy_nIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEmPcET1_T_T0_SC_St26random_access_iterator_tag;  lookup in file=/lib64/libstdc++.so.6 [0]
10: symbol=_ZSt8__copy_nIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEmPcET1_T_T0_SC_St26random_access_iterator_tag;  lookup in file=/lib64/libm.so.6 [0]
10: symbol=_ZSt8__copy_nIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEmPcET1_T_T0_SC_St26random_access_iterator_tag;  lookup in file=/lib64/libgcc_s.so.1 [0]
10: symbol=_ZSt8__copy_nIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEmPcET1_T_T0_SC_St26random_access_iterator_tag;  lookup in file=/lib64/libc.so.6 [0]
10: symbol=_ZSt8__copy_nIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEmPcET1_T_T0_SC_St26random_access_iterator_tag;  lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
10: symbol=_ZSt8__copy_nIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEmPcET1_T_T0_SC_St26random_access_iterator_tag;  lookup in file=/var/runtime/liblambdaruntime.so [0]
10: binding file /var/runtime/liblambdaruntime.so [0] to /var/runtime/liblambdaruntime.so [0]: normal symbol `_ZSt8__copy_nIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEmPcET1_T_T0_SC_St26random_access_iterator_tag'
10: symbol=_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET0_T_SD_SC_;  lookup in file=dotnet [0]
10: symbol=_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET0_T_SD_SC_;  lookup in file=/lib64/libpthread.so.0 [0]
10: symbol=_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET0_T_SD_SC_;  lookup in file=/lib64/libdl.so.2 [0]
10: symbol=_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET0_T_SD_SC_;  lookup in file=/lib64/libstdc++.so.6 [0]
10: symbol=_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET0_T_SD_SC_;  lookup in file=/lib64/libm.so.6 [0]
10: symbol=_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET0_T_SD_SC_;  lookup in file=/lib64/libgcc_s.so.1 [0]
10: symbol=_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET0_T_SD_SC_;  lookup in file=/lib64/libc.so.6 [0]
10: symbol=_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET0_T_SD_SC_;  lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
10: symbol=_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET0_T_SD_SC_;  lookup in file=/var/runtime/liblambdaruntime.so [0]
10: binding file /var/runtime/liblambdaruntime.so [0] to /var/runtime/liblambdaruntime.so [0]: normal symbol `_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET0_T_SD_SC_'
10: symbol=_ZSt12__miter_baseIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEET_SB_;  lookup in file=dotnet [0]
10: symbol=_ZSt12__miter_baseIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEET_SB_;  lookup in file=/lib64/libpthread.so.0 [0]
10: symbol=_ZSt12__miter_baseIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEET_SB_;  lookup in file=/lib64/libdl.so.2 [0]
10: symbol=_ZSt12__miter_baseIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEET_SB_;  lookup in file=/lib64/libstdc++.so.6 [0]
10: symbol=_ZSt12__miter_baseIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEET_SB_;  lookup in file=/lib64/libm.so.6 [0]
10: symbol=_ZSt12__miter_baseIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEET_SB_;  lookup in file=/lib64/libgcc_s.so.1 [0]
10: symbol=_ZSt12__miter_baseIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEET_SB_;  lookup in file=/lib64/libc.so.6 [0]
10: symbol=_ZSt12__miter_baseIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEET_SB_;  lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
10: symbol=_ZSt12__miter_baseIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEET_SB_;  lookup in file=/var/runtime/liblambdaruntime.so [0]
10: binding file /var/runtime/liblambdaruntime.so [0] to /var/runtime/liblambdaruntime.so [0]: normal symbol `_ZSt12__miter_baseIN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEET_SB_'
10: symbol=_ZSt14__copy_move_a2ILb0EN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET1_T0_SD_SC_;  lookup in file=dotnet [0]
10: symbol=_ZSt14__copy_move_a2ILb0EN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET1_T0_SD_SC_;  lookup in file=/lib64/libpthread.so.0 [0]
10: symbol=_ZSt14__copy_move_a2ILb0EN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET1_T0_SD_SC_;  lookup in file=/lib64/libdl.so.2 [0]
10: symbol=_ZSt14__copy_move_a2ILb0EN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET1_T0_SD_SC_;  lookup in file=/lib64/libstdc++.so.6 [0]
10: symbol=_ZSt14__copy_move_a2ILb0EN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET1_T0_SD_SC_;  lookup in file=/lib64/libm.so.6 [0]
10: symbol=_ZSt14__copy_move_a2ILb0EN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET1_T0_SD_SC_;  lookup in file=/lib64/libgcc_s.so.1 [0]
10: symbol=_ZSt14__copy_move_a2ILb0EN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET1_T0_SD_SC_;  lookup in file=/lib64/libc.so.6 [0]
10: symbol=_ZSt14__copy_move_a2ILb0EN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET1_T0_SD_SC_;  lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
10: symbol=_ZSt14__copy_move_a2ILb0EN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET1_T0_SD_SC_;  lookup in file=/var/runtime/liblambdaruntime.so [0]
10: binding file /var/runtime/liblambdaruntime.so [0] to /var/runtime/liblambdaruntime.so [0]: normal symbol `_ZSt14__copy_move_a2ILb0EN9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEEPcET1_T0_SD_SC_'
10: symbol=_ZSt12__niter_baseIPcET_S1_;  lookup in file=dotnet [0]
10: symbol=_ZSt12__niter_baseIPcET_S1_;  lookup in file=/lib64/libpthread.so.0 [0]
10: symbol=_ZSt12__niter_baseIPcET_S1_;  lookup in file=/lib64/libdl.so.2 [0]
10: symbol=_ZSt12__niter_baseIPcET_S1_;  lookup in file=/lib64/libstdc++.so.6 [0]
10: symbol=_ZSt12__niter_baseIPcET_S1_;  lookup in file=/lib64/libm.so.6 [0]
10: symbol=_ZSt12__niter_baseIPcET_S1_;  lookup in file=/lib64/libgcc_s.so.1 [0]
10: symbol=_ZSt12__niter_baseIPcET_S1_;  lookup in file=/lib64/libc.so.6 [0]
10: symbol=_ZSt12__niter_baseIPcET_S1_;  lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
10: symbol=_ZSt12__niter_baseIPcET_S1_;  lookup in file=/var/runtime/liblambdaruntime.so [0]
10: binding file /var/runtime/liblambdaruntime.so [0] to /var/runtime/liblambdaruntime.so [0]: normal symbol `_ZSt12__niter_baseIPcET_S1_'
10: symbol=_ZSt12__niter_baseIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEET_N9__gnu_cxx17__normal_iteratorIS8_T0_EE;  lookup in file=dotnet [0]
10: symbol=_ZSt12__niter_baseIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEET_N9__gnu_cxx17__normal_iteratorIS8_T0_EE;  lookup in file=/lib64/libpthread.so.0 [0]
10: symbol=_ZSt12__niter_baseIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEET_N9__gnu_cxx17__normal_iteratorIS8_T0_EE;  lookup in file=/lib64/libdl.so.2 [0]
10: symbol=_ZSt12__niter_baseIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEET_N9__gnu_cxx17__normal_iteratorIS8_T0_EE;  lookup in file=/lib64/libstdc++.so.6 [0]
10: symbol=_ZSt12__niter_baseIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEET_N9__gnu_cxx17__normal_iteratorIS8_T0_EE;  lookup in file=/lib64/libm.so.6 [0]
10: symbol=_ZSt12__niter_baseIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEET_N9__gnu_cxx17__normal_iteratorIS8_T0_EE;  lookup in file=/lib64/libgcc_s.so.1 [0]
10: symbol=_ZSt12__niter_baseIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEET_N9__gnu_cxx17__normal_iteratorIS8_T0_EE;  lookup in file=/lib64/libc.so.6 [0]
10: symbol=_ZSt12__niter_baseIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEET_N9__gnu_cxx17__normal_iteratorIS8_T0_EE;  lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
10: symbol=_ZSt12__niter_baseIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEET_N9__gnu_cxx17__normal_iteratorIS8_T0_EE;  lookup in file=/var/runtime/liblambdaruntime.so [0]
10: binding file /var/runtime/liblambdaruntime.so [0] to /var/runtime/liblambdaruntime.so [0]: normal symbol `_ZSt12__niter_baseIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEET_N9__gnu_cxx17__normal_iteratorIS8_T0_EE'
10: symbol=_ZNK9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE4baseEv;  lookup in file=dotnet [0]
10: symbol=_ZNK9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE4baseEv;  lookup in file=/lib64/libpthread.so.0 [0]
10: symbol=_ZNK9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE4baseEv;  lookup in file=/lib64/libdl.so.2 [0]
10: symbol=_ZNK9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE4baseEv;  lookup in file=/lib64/libstdc++.so.6 [0]
10: symbol=_ZNK9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE4baseEv;  lookup in file=/lib64/libm.so.6 [0]
10: symbol=_ZNK9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE4baseEv;  lookup in file=/lib64/libgcc_s.so.1 [0]
10: symbol=_ZNK9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE4baseEv;  lookup in file=/lib64/libc.so.6 [0]
10: symbol=_ZNK9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE4baseEv;  lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
10: symbol=_ZNK9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE4baseEv;  lookup in file=/var/runtime/liblambdaruntime.so [0]
10: binding file /var/runtime/liblambdaruntime.so [0] to /var/runtime/liblambdaruntime.so [0]: normal symbol `_ZNK9__gnu_cxx17__normal_iteratorIPKcNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE4baseEv'
10: symbol=_ZSt13__copy_move_aILb0EPKcPcET1_T0_S4_S3_;  lookup in file=dotnet [0]
10: symbol=_ZSt13__copy_move_aILb0EPKcPcET1_T0_S4_S3_;  lookup in file=/lib64/libpthread.so.0 [0]
10: symbol=_ZSt13__copy_move_aILb0EPKcPcET1_T0_S4_S3_;  lookup in file=/lib64/libdl.so.2 [0]
10: symbol=_ZSt13__copy_move_aILb0EPKcPcET1_T0_S4_S3_;  lookup in file=/lib64/libstdc++.so.6 [0]
10: symbol=_ZSt13__copy_move_aILb0EPKcPcET1_T0_S4_S3_;  lookup in file=/lib64/libm.so.6 [0]
10: symbol=_ZSt13__copy_move_aILb0EPKcPcET1_T0_S4_S3_;  lookup in file=/lib64/libgcc_s.so.1 [0]
10: symbol=_ZSt13__copy_move_aILb0EPKcPcET1_T0_S4_S3_;  lookup in file=/lib64/libc.so.6 [0]
10: symbol=_ZSt13__copy_move_aILb0EPKcPcET1_T0_S4_S3_;  lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
10: symbol=_ZSt13__copy_move_aILb0EPKcPcET1_T0_S4_S3_;  lookup in file=/var/runtime/liblambdaruntime.so [0]
10: binding file /var/runtime/liblambdaruntime.so [0] to /var/runtime/liblambdaruntime.so [0]: normal symbol `_ZSt13__copy_move_aILb0EPKcPcET1_T0_S4_S3_'
10: symbol=_ZNSt11__copy_moveILb0ELb1ESt26random_access_iterator_tagE8__copy_mIcEEPT_PKS3_S6_S4_;  lookup in file=dotnet [0]
10: symbol=_ZNSt11__copy_moveILb0ELb1ESt26random_access_iterator_tagE8__copy_mIcEEPT_PKS3_S6_S4_;  lookup in file=/lib64/libpthread.so.0 [0]
10: symbol=_ZNSt11__copy_moveILb0ELb1ESt26random_access_iterator_tagE8__copy_mIcEEPT_PKS3_S6_S4_;  lookup in file=/lib64/libdl.so.2 [0]
10: symbol=_ZNSt11__copy_moveILb0ELb1ESt26random_access_iterator_tagE8__copy_mIcEEPT_PKS3_S6_S4_;  lookup in file=/lib64/libstdc++.so.6 [0]
10: symbol=_ZNSt11__copy_moveILb0ELb1ESt26random_access_iterator_tagE8__copy_mIcEEPT_PKS3_S6_S4_;  lookup in file=/lib64/libm.so.6 [0]
10: symbol=_ZNSt11__copy_moveILb0ELb1ESt26random_access_iterator_tagE8__copy_mIcEEPT_PKS3_S6_S4_;  lookup in file=/lib64/libgcc_s.so.1 [0]
10: symbol=_ZNSt11__copy_moveILb0ELb1ESt26random_access_iterator_tagE8__copy_mIcEEPT_PKS3_S6_S4_;  lookup in file=/lib64/libc.so.6 [0]
10: symbol=_ZNSt11__copy_moveILb0ELb1ESt26random_access_iterator_tagE8__copy_mIcEEPT_PKS3_S6_S4_;  lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
10: symbol=_ZNSt11__copy_moveILb0ELb1ESt26random_access_iterator_tagE8__copy_mIcEEPT_PKS3_S6_S4_;  lookup in file=/var/runtime/liblambdaruntime.so [0]
10: binding file /var/runtime/liblambdaruntime.so [0] to /var/runtime/liblambdaruntime.so [0]: normal symbol `_ZNSt11__copy_moveILb0ELb1ESt26random_access_iterator_tagE8__copy_mIcEEPT_PKS3_S6_S4_'
10: symbol=memmove;  lookup in file=dotnet [0]
10: symbol=memmove;  lookup in file=/lib64/libpthread.so.0 [0]
10: symbol=memmove;  lookup in file=/lib64/libdl.so.2 [0]
10: symbol=memmove;  lookup in file=/lib64/libstdc++.so.6 [0]
10: symbol=memmove;  lookup in file=/lib64/libm.so.6 [0]
10: symbol=memmove;  lookup in file=/lib64/libgcc_s.so.1 [0]
10: symbol=memmove;  lookup in file=/lib64/libc.so.6 [0]
10: binding file /var/runtime/liblambdaruntime.so [0] to /lib64/libc.so.6 [0]: normal symbol `memmove' [GLIBC_2.2.5]

编辑 2：我已经将范围缩小到这行代码，即抛出 DllNotFoundException 的地方：

using (GurobiSolver solver = new GurobiSolver())

Answer 1

在 bin 文件夹中有两个文件： libgurobi.so.9.5.0和libgurobi95.so 。 第一个是 41.5MB，我推测包含 Gurobi 运行时。 第二个只是一个包含./libgurobi.so.9.5.0行的文本文件。

这给了我一个“啊哈”的时刻，所以我复制了libgurobi.so.9.5.0 ，将其重命名为libgurobi95.so并用它替换了 zip 文件中的原始libgurobi95.so文件以上传到 AWS .

现在它起作用了。 我不完全理解它为什么起作用（为什么在 AWS 上运行时引用与在本地运行时引用不同？）。 这可能与我在本地运行时，它运行在 Windows，但 AWS lambda 函数运行在 Linux（亚马逊 Linux 2）有关，但我真的不知道。

令人恼火的是，每次我想更新 lambda function 时，我都必须 go，但至少它有效。