C#应用程序无法访问kubernetes服务?
我似乎对我的C#应用程序有问题,我将其装箱并放入pod,似乎无法访问集群中的服务 我做了一个简单的代码示例C#应用程序无法访问kubernetes服务?,c#,asp.net-core,kubernetes,C#,Asp.net Core,Kubernetes,我似乎对我的C#应用程序有问题,我将其装箱并放入pod,似乎无法访问集群中的服务 我做了一个简单的代码示例 using System; using System.Net.NetworkInformation; namespace pingMe { class Program { static void Main(string[] args) { Console.WriteLine("Hello World!");
using System;
using System.Net.NetworkInformation;
namespace pingMe
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
Ping ping = new Ping();
PingReply pingresult = ping.Send("example-service.default.svc");
if (pingresult.Status.ToString() == "Success")
{
Console.WriteLine("I can reach");
}
}
}
}
应该能够在群集中ping此
PS C:\Helm> kubectl apply -f https://k8s.io/examples/service/access/hello-application.yaml
deployment.apps/hello-world created
PS C:\Helm> kubectl expose deployment hello-world --type=ClusterIP --name=example-service
service/example-service exposed
PS C:\Helm> kubectl get service/example-service
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
example-service ClusterIP 10.97.171.216 <none> 8080/TCP 14s
PS C:\Helm> kubectl get deployment.apps/hello-world
NAME READY UP-TO-DATE AVAILABLE AGE
hello-world 2/2 2 2 61s
为什么。。。添加端口号没有任何帮助。表面上看起来一切正常。我将通过排除可能性开始调试。从“worker”pod可以ping集群而不是服务名称吗?您能否成功地在任何服务或pod上执行DNS查找?如果您可以访问群集IP,但ping或解析服务名称仍然失败,那么DNS似乎更可疑 您试图命中的服务和您试图命中的服务是否都在同一集群内运行?如果您试图从集群外部访问一个在集群内运行的服务,您需要公开一个外部IP,并且通过它两者都在同一集群内……其他具有不同基础的POD可以解析主机名C#是否有可能拥有自己的DNS解析程序而不使用标准的resolv.conf配置?您的代码也会说
hello world service
,但您在示例中的命名是example service
。我不确定dns解析程序,也不确定它为什么要将自身容器化那么多?
Hello World!
Unhandled exception. System.Net.NetworkInformation.PingException: An exception occurred during a Ping request.
---> System.Net.Internals.SocketExceptionFactory+ExtendedSocketException (00000005, 0xFFFDFFFF): Name or service not known
at System.Net.Dns.InternalGetHostByName(String hostName)
at System.Net.Dns.GetHostAddresses(String hostNameOrAddress)
at System.Net.NetworkInformation.Ping.GetAddressAndSend(String hostNameOrAddress, Int32 timeout, Byte[] buffer, PingOptions options)
--- End of inner exception stack trace ---
at System.Net.NetworkInformation.Ping.GetAddressAndSend(String hostNameOrAddress, Int32 timeout, Byte[] buffer, PingOptions options)
at System.Net.NetworkInformation.Ping.Send(String hostNameOrAddress, Int32 timeout, Byte[] buffer, PingOptions options)
at System.Net.NetworkInformation.Ping.Send(String hostNameOrAddress)
at pingMe.Program.Main(String[] args) in /src/pingMe/Program.cs:line 12