Stuck on an issue?
Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.
And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.
Startup failure if Kubernetes actuators are enabled
See original GitHub issueDescribe the bug
Kubernetes actuators are enabled without checking whether the application is inside Kubernetes or not. This causes the following yaml parse exception at startup when I try to debug the application locally from Visual Studio:
at YamlDotNet.Core.ParserExtensions.Expect[T](IParser parser)
at YamlDotNet.Serialization.NodeDeserializers.DictionaryNodeDeserializer.DeserializeHelper(Type tKey, Type tValue, IParser parser, Func`3 nestedObjectDeserializer, IDictionary result)
at YamlDotNet.Serialization.NodeDeserializers.DictionaryNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.<>c__DisplayClass3_0.<DeserializeValue>b__0(IParser r, Type t)
at YamlDotNet.Serialization.NodeDeserializers.ObjectNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.<>c__DisplayClass3_0.<DeserializeValue>b__0(IParser r, Type t)
at YamlDotNet.Serialization.NodeDeserializers.ObjectNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.<>c__DisplayClass3_0.<DeserializeValue>b__0(IParser r, Type t)
at YamlDotNet.Serialization.NodeDeserializers.CollectionNodeDeserializer.DeserializeHelper(Type tItem, IParser parser, Func`3 nestedObjectDeserializer, IList result, Boolean canUpdate)
at YamlDotNet.Serialization.NodeDeserializers.CollectionNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.<>c__DisplayClass3_0.<DeserializeValue>b__0(IParser r, Type t)
at YamlDotNet.Serialization.NodeDeserializers.EnumerableNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.<>c__DisplayClass3_0.<DeserializeValue>b__0(IParser r, Type t)
at YamlDotNet.Serialization.NodeDeserializers.ObjectNodeDeserializer.YamlDotNet.Serialization.INodeDeserializer.Deserialize(IParser parser, Type expectedType, Func`3 nestedObjectDeserializer, Object& value)
at YamlDotNet.Serialization.ValueDeserializers.NodeValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.ValueDeserializers.AliasValueDeserializer.DeserializeValue(IParser parser, Type expectedType, SerializerState state, IValueDeserializer nestedObjectDeserializer)
at YamlDotNet.Serialization.Deserializer.Deserialize(IParser parser, Type type)
at YamlDotNet.Serialization.Deserializer.Deserialize(TextReader input, Type type)
at YamlDotNet.Serialization.Deserializer.Deserialize[T](String input)
at k8s.Yaml.LoadFromString[T](String content)
at k8s.Yaml.<LoadFromStreamAsync>d__3`1.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in /_/src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in /_/src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in /_/src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() in /_/src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 563
at k8s.KubernetesClientConfiguration.<LoadKubeConfigAsync>d__23.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in /_/src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in /_/src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in /_/src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult() in /_/src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 563
at k8s.KubernetesClientConfiguration.<BuildConfigFromConfigFileAsync>d__12.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in /_/src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in /_/src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in /_/src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult() in /_/src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 369
at k8s.KubernetesClientConfiguration.BuildConfigFromConfigFile(FileInfo kubeconfig, String currentContext, String masterUrl, Boolean useRelativePaths)
at k8s.KubernetesClientConfiguration.BuildConfigFromConfigFile(String kubeconfigPath, String currentContext, String masterUrl, Boolean useRelativePaths)
at k8s.KubernetesClientConfiguration.BuildDefaultConfig()
at Steeltoe.Common.Kubernetes.KubernetesClientHelpers.GetKubernetesClient(KubernetesApplicationOptions appInfo, Action`1 kubernetesClientConfiguration, ILogger logger) in /_/src/Common/src/Common.Kubernetes/KubernetesClientHelpers.cs:line 34
at Steeltoe.Extensions.Configuration.Kubernetes.StandardPodUtilities..ctor(KubernetesApplicationOptions kubernetesApplicationOptions, ILogger logger, IKubernetes kubernetes) in /_/src/Common/src/Common.Kubernetes/StandardPodUtilities.cs:line 30
--- End of stack trace from previous location ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in /_/src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteRuntimeResolver.cs:line 53
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteVisitor.cs:line 49
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteRuntimeResolver.cs:line 92
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteRuntimeResolver.cs:line 60
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteVisitor.cs:line 28
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteRuntimeResolver.cs:line 36
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteVisitor.cs:line 49
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteRuntimeResolver.cs:line 92
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteRuntimeResolver.cs:line 60
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteVisitor.cs:line 28
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitIEnumerable(IEnumerableCallSite enumerableCallSite, RuntimeResolverContext context) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteRuntimeResolver.cs:line 134
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteVisitor.cs:line 47
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteRuntimeResolver.cs:line 92
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteRuntimeResolver.cs:line 60
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteVisitor.cs:line 28
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/CallSiteRuntimeResolver.cs:line 15
at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/DynamicServiceProviderEngine.cs:line 25
at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/ServiceProviderEngine.cs:line 92
at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceLookup/ServiceProviderEngine.cs:line 66
at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType) in /_/src/libraries/Microsoft.Extensions.DependencyInjection/src/ServiceProvider.cs:line 58
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType) in /_/src/libraries/Microsoft.Extensions.DependencyInjection.Abstractions/src/ServiceProviderServiceExtensions.cs:line 56
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider) in /_/src/libraries/Microsoft.Extensions.DependencyInjection.Abstractions/src/ServiceProviderServiceExtensions.cs:line 79
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetServices[T](IServiceProvider provider) in /_/src/libraries/Microsoft.Extensions.DependencyInjection.Abstractions/src/ServiceProviderServiceExtensions.cs:line 95
at Steeltoe.Management.Endpoint.Info.EndpointServiceCollectionExtensions.AddInfoActuator(IServiceCollection services, IConfiguration config) in /_/src/Management/src/EndpointCore/Info/EndpointServiceCollectionExtensions.cs:line 26
at Steeltoe.Management.Endpoint.ActuatorServiceCollectionExtensions.AddAllActuators(IServiceCollection services, IConfiguration config, MediaTypeVersion version, Action`1 buildCorsPolicy) in /_/src/Management/src/EndpointCore/ActuatorServiceCollectionExtensions.cs:line 73
at Steeltoe.Management.Kubernetes.ServiceCollectionExtensions.AddKubernetesActuators(IServiceCollection services, IConfiguration config, IPodUtilities podUtilities, MediaTypeVersion version) in /_/src/Management/src/KubernetesCore/ServiceCollectionExtensions.cs:line 63
at Steeltoe.Management.Kubernetes.HostBuilderExtensions.<>c__DisplayClass2_0.<AddKubernetesActuators>b__1(HostBuilderContext context, IServiceCollection collection) in /_/src/Management/src/KubernetesCore/HostBuilderExtensions.cs:line 44
at Microsoft.Extensions.Hosting.HostBuilder.CreateServiceProvider() in /_/src/libraries/Microsoft.Extensions.Hosting/src/HostBuilder.cs:line 223
at Microsoft.Extensions.Hosting.HostBuilder.Build() in /_/src/libraries/Microsoft.Extensions.Hosting/src/HostBuilder.cs:line 133
at Program.Main(String[] args) in Program.cs
I’ve tried to disable kubernetes integration via appsettings.json and envvar (SPRING__CLOUD__KUBERNETES__ENABLED=false) but it does not change the behaviour of the application:
{
"spring": {
"cloud": {
"kubernetes": {
"enabled": false
}
}
}
}
Steps to reproduce
Steps to reproduce the behavior:
- Create a basic aspnetcore microservice
- Add Steeltoe Kubernetes package, my project has the following packages enabled:
<PackageReference Include="Steeltoe.Bootstrap.Autoconfig" Version="3.1.0" />
<PackageReference Include="Steeltoe.Discovery.ClientCore" Version="3.1.0" />
<PackageReference Include="Steeltoe.Discovery.Kubernetes" Version="3.1.0" />
<PackageReference Include="Steeltoe.Extensions.Configuration.KubernetesCore" Version="3.1.0" />
<PackageReference Include="Steeltoe.Management.EndpointBase" Version="3.1.0" />
<PackageReference Include="Steeltoe.Management.EndpointCore" Version="3.1.0" />
<PackageReference Include="Steeltoe.Management.KubernetesCore" Version="3.1.0" />
- Configure startup to use Autoconfig:
public static IHostBuilder CreateHostBuilder(string[] args)
{
var builder = Host.CreateDefaultBuilder(args);
//create initialization logger factory(allow steeltoe components that runs during host initialization to log)
var initLoggerFactory = new LoggerFactory().AddSerilog(new LoggerConfiguration()
.MinimumLevel.Error().WriteTo.Console().CreateLogger());
return builder
//.AddKubernetesConfiguration(null, initLoggerFactory) //alternative that still does not work
.ConfigureWebHostDefaults(webBuilder => webBuilder.UseStartup<Startup>())
.AddSteeltoe(loggerFactory: initLoggerFactory);
}
Expected behavior
The application should not try to perform any request to kube-apiserver component if the environment is not Kubernetes. Moreover the application should not execute any Kuberentes related operation if spring:cloud:kubernetes:enabled is false.
Environment (please complete the following information):
- Steeltoe Version 3.1.0
- OS: Windows (Docker Desktop installed with Kubernetes cluster disabled)
- .NET Core 3.1.0
Issue Analytics
- State:
- Created 2 years ago
- Comments:12 (12 by maintainers)
Top Results From Across the Web
Spring Boot Actuator Kubernetes Probes returning 404
I identified the correct name by trial-and-error -- checking the result while running in a Kubernetes environment.
Read more >Liveness and Readiness Probes with Spring Boot
If Liveness is broken, this means that the application itself is in a failed state and cannot recover from it. In this case,...
Read more >Production-ready Features
This means that the actuator endpoints that require a POST (shutdown and loggers endpoints), a PUT , or a DELETE get a 403...
Read more >Smart healthchecks with Kubernetes and Spring Boot ...
Imagine a container running for days/weeks and suddenly it stops serving requests. The only way to resolve the problem is to restart it....
Read more >Liveness and Readiness Probes in Spring Boot
On the other hand, the BROKEN value means the application is running with some fatal failures. Here's how readiness and liveness state changes ......
Read more >
Top Related Medium Post
No results found
Top Related StackOverflow Question
No results found
Troubleshoot Live Code
Lightrun enables developers to add logs, metrics and snapshots to live code - no restarts or redeploys required.
Start Free
Top Related Reddit Thread
No results found
Top Related Hackernoon Post
No results found
Top Related Tweet
No results found
Top Related Dev.to Post
No results found
Top Related Hashnode Post
No results found
@TimHess, I can confirm that with all Steeltoe’s packages updated to version 3.1.1-6308 the yaml parsing exception is gone and the application startup is completed without errors.
@DaviGia are you able to try out the updated package from the dev feed? the k8s client upgrade should be included in 3.1.1-6252 and higher.