1. Build from source

cd GOPATH

mkdir k8s.io

cd k8s.io

git clone https://github.com/kubernetes/kubernetes.git

Note : make the location of sure source code at $GOPATH/k8s.io/kubernetes

example :

GOPATH/src/github.com/xuchencn/xxxx

GOPATH/src/k8s.io/kubernetes

cd $GOPATH/k8s.io/kubernetes

make

After make find cmds on "_output/bin/"

2.Install delve

Follow the delve's toturial to install delve

After install you can debugging use delve or use Goland

3.Debugging by Goland

Example by apiserver

cd $GOPATH/src/k8s.io/kubernetes/cmd/kube-apiserver/

$GOPATH/bin/dlv debug --headless --listen=:2345 --api-version=2 -- k8s.io/kubernetes/cmd/kube-apiserver/apiserver.go --etcd-servers http://localhost:2379

After the command delve will output a "debug" file in current directory and listen on 2345 port

Open Goland create new remote debug

Don't forget create breakingpoints before debugging