.NET Core/5+ - Process terminated. Couldn't find a valid ICU package installed on the system
간단한 콘솔 응용 프로그램을 만들고,
// .NET 7 + linux-x64
internal class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
}
}
linux-x64 유형으로,
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net7.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<RuntimeIdentifier>linux-x64</RuntimeIdentifier>
</PropertyGroup>
</Project>
publish를 해줍니다.
dotnet publish
출력된 파일들을 일부 컨테이너 환경에서 만든 이미지로 실행하는 경우,
FROM debian:buster-slim
WORKDIR /app
COPY . .
c:\temp> docker build -t debian_buster -f Dockerfile .
c:\temp> docker run -it debian_buster /bin/bash
# ./bin/Release/net7.0/linux-x64/publish/ConsoleApp1
이런 예외가 발생합니다.
Process terminated. Couldn't find a valid ICU package installed on the system. Please install libicu (or icu-libs) using your package manager and try again. Alternatively you can set the configuration flag System.Globalization.Invariant to true if you want to run with no globalization support. Please see https://aka.ms/dotnet-missing-libicu for more information.
at System.Environment.FailFast(System.String)
at System.Globalization.GlobalizationMode+Settings..cctor()
at System.Globalization.Ordinal.IndexOfOrdinalIgnoreCase(System.ReadOnlySpan`1<Char>, System.ReadOnlySpan`1<Char>)
at System.Globalization.Ordinal.IndexOf(System.String, System.String, Int32, Int32, Boolean)
at System.String.Contains(System.String, System.StringComparison)
at System.TerminalFormatStrings..ctor(Database)
at System.ConsolePal+<>c.<.cctor>b__114_0()
at System.Lazy`1[[System.__Canon, System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].ViaFactory(System.Threading.LazyThreadSafetyMode)
at System.Lazy`1[[System.__Canon, System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].ExecutionAndPublication(System.LazyHelper, Boolean)
at System.Lazy`1[[System.__Canon, System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].CreateValue()
at System.ConsolePal.EnsureInitializedCore()
at System.ConsolePal.Write(Microsoft.Win32.SafeHandles.SafeFileHandle, System.ReadOnlySpan`1<Byte>, Boolean)
at System.IO.StreamWriter.Flush(Boolean, Boolean)
at System.IO.StreamWriter.WriteLine(System.String)
at System.IO.TextWriter+SyncTextWriter.WriteLine(System.String)
at System.Console.WriteLine(System.String)
at Program.<Main>$(System.String[])
Aborted
오류 메시지에도 나오지만,
Process terminated. Couldn't find a valid ICU package installed on the system. Please install libicu (or icu-libs) using your package manager and try again. Alternatively you can set the configuration flag System.Globalization.Invariant to true if you want to run with no globalization support. Please see
https://aka.ms/dotnet-missing-libicu for more information.
해결 방법은 다양하게 있습니다. 간단하게는 libicu 구성 요소를 설치하면 되는데요,
# apt-get update && apt-get install -y apt-transport-https
# apt-get install -y libicu-dev
그렇긴 해도 응용 프로그램 실행을 위해 시스템을 변경해야 하는 것이 살짝 어려울 수 있습니다. 또 다른 방법은, 메시지에 나오듯이,
Runtime configuration options for globalization
; https://aka.ms/dotnet-missing-libicu
; https://learn.microsoft.com/en-us/dotnet/core/runtime-config/globalization
System.Globalization.Invariant 설정을 하는 것입니다. 따라서 아래와 같이 ConsoleApp1.template.json 파일(
runtimeconfig.template.json)을 편집해 설정하면 됩니다.
{
"runtimeOptions": {
"tfm": "net7.0",
"includedFrameworks": [
{
"name": "Microsoft.NETCore.App",
"version": "7.0.3"
}
],
"configProperties": {
"System.Globalization.Invariant": true
}
}
}
혹은 환경 변수를 이용하는 방법도 있습니다. (만약
PublishSingleFile 옵션으로 빌드했다면 반드시 환경 변수를 통해서만 런타임 변경이 가능합니다.)
# export DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=1
또는, 아예 빌드 과정에서 지정하는 것도 가능합니다.
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net7.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
<InvariantGlobalization>true</InvariantGlobalization>
</PropertyGroup>
</Project>
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