1、go get -u -v github.com/hashicorp/consul
go: finding module for package k8s.io/api/auditregistration/v1alpha1
../../pkg/mod/k8s.io/client-go@v11.0.0+incompatible/kubernetes/scheme/register.go:26:2: module k8s.io/api@latest found (v0.19.3), but does not contain package k8s.io/api/auditregistration/v1alpha1
原因：k8s.io/client-go 版本不对
解决办法：修改go.mod
2、go get
# github.com/coreos/etcd/clientv3/balancer/picker
../../pkg/mod/github.com/coreos/etcd@v3.3.17+incompatible/clientv3/balancer/picker/err.go:37:44: undefined: balancer.PickOptions
../../pkg/mod/github.com/coreos/etcd@v3.3.17+incompatible/clientv3/balancer/picker/roundrobin_balanced.go:55:54: undefined: balancer.PickOptions
# github.com/coreos/etcd/clientv3/balancer/resolver/endpoint
../../pkg/mod/github.com/coreos/etcd@v3.3.17+incompatible/clientv3/balancer/resolver/endpoint/endpoint.go:114:78: undefined: resolver.BuildOption
../../pkg/mod/github.com/coreos/etcd@v3.3.17+incompatible/clientv3/balancer/resolver/endpoint/endpoint.go:182:31: undefined: resolver.ResolveNowOption
原因 grpc版本不对
解决方法
go mod edit -require=google.golang.org/grpc@v1.26.0
go get -u -x google.golang.org/grpc@v1.26.0