[Pipeline] container
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Build a Go project)
[Pipeline] sh
[k8s-test2] Running shell script
Executing shell script inside container [golang] of pod [jenkins-slave-7be4b22b164184]
java.net.UnknownHostException: kubernetes.default.svc: unknown error
	at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
	at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
	at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
	at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
	at java.net.InetAddress.getAllByName(InetAddress.java:1192)
	at java.net.InetAddress.getAllByName(InetAddress.java:1126)
	at com.squareup.okhttp.Dns$1.lookup(Dns.java:39)
	at com.squareup.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:175)
	at com.squareup.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:141)
	at com.squareup.okhttp.internal.http.RouteSelector.next(RouteSelector.java:83)
	at com.squareup.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:174)
	at com.squareup.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
	at com.squareup.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
	at com.squareup.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
	at com.squareup.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
	at com.squareup.okhttp.Call.getResponse(Call.java:286)
	at com.squareup.okhttp.Call$ApplicationInterceptorChain.proceed(Call.java:243)
	at com.squareup.okhttp.Call.getResponseWithInterceptorChain(Call.java:205)
	at com.squareup.okhttp.Call.access$100(Call.java:35)
	at com.squareup.okhttp.Call$AsyncCall.execute(Call.java:171)
	at com.squareup.okhttp.internal.NamedRunnable.run(NamedRunnable.java:33)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // container
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline

@kubectl run -i --tty busybox --image=busybox --generator="run-pod/v1"
Waiting for pod default/busybox to be running, status is Pending, pod ready: false

Hit enter for command prompt

/ # nslookup kubernetes.default.svc
Server:    172.18.200.10
Address 1: 172.18.200.10 kube-dns.kube-system.svc.cluster.local

Name:      kubernetes.default.svc
Address 1: 172.18.200.1 kubernetes.default.svc.cluster.local