k8s.io/api@v0.0.0: reading k8s.io/api/go.mod at revision v0.0.0: unknown revision v0.0.0

[yueyongyue]

What happened:
go mod tidy

go: finding module for package golang.org/x/net/websocket
go: finding module for package k8s.io/apimachinery/pkg/apis/meta/v1
go: finding module for package github.com/open-kingfisher/king-utils/middleware/jwt
go: finding module for package github.com/dgrijalva/jwt-go
go: finding module for package github.com/open-kingfisher/king-utils/db
go: finding module for package k8s.io/apimachinery/pkg/types
go: finding module for package k8s.io/client-go/tools/watch
go: finding module for package github.com/open-kingfisher/king-utils/kit
go: finding module for package github.com/open-kingfisher/king-utils/config
go: finding module for package k8s.io/apimachinery/pkg/util/intstr
go: downloading golang.org/x/net v0.0.0-20200421231249-e086a090c8fd
go: finding module for package k8s.io/api/storage/v1
go: finding module for package k8s.io/metrics/pkg/apis/metrics/v1beta1
go: finding module for package google.golang.org/grpc
go: finding module for package github.com/open-kingfisher/king-utils/common
go: finding module for package k8s.io/client-go/kubernetes/scheme
go: finding module for package k8s.io/api/policy/v1beta1
go: finding module for package k8s.io/apimachinery/pkg/selection
go: finding module for package k8s.io/client-go/tools/remotecommand
go: finding module for package k8s.io/kubernetes/pkg/client/conditions
go: finding module for package k8s.io/metrics/pkg/client/custom_metrics
go: finding module for package k8s.io/metrics/pkg/apis/custom_metrics/v1beta2
go: finding module for package k8s.io/metrics/pkg/client/clientset/versioned
go: finding module for package k8s.io/api/apps/v1
go: finding module for package github.com/open-kingfisher/king-utils/common/rabbitmq
go: finding module for package k8s.io/client-go/kubernetes
go: finding module for package golang.org/x/sync/errgroup
go: finding module for package github.com/docker/docker/pkg/term
go: finding module for package k8s.io/api/rbac/v1beta1
go: finding module for package k8s.io/api/extensions/v1beta1
go: finding module for package github.com/pkg/errors
go: finding module for package k8s.io/apimachinery/pkg/labels
go: finding module for package github.com/prometheus/client_golang/api/prometheus/v1
go: finding module for package github.com/open-kingfisher/king-utils/interrupt
go: downloading github.com/pkg/errors v0.9.1
go: finding module for package k8s.io/apimachinery/pkg/runtime/schema
go: downloading k8s.io/kubernetes v1.18.2
go: finding module for package k8s.io/api/autoscaling/v1
go: finding module for package k8s.io/client-go/tools/clientcmd
go: finding module for package github.com/gin-gonic/gin/binding
go: finding module for package github.com/open-kingfisher/king-utils/common/access
go: finding module for package k8s.io/apimachinery/pkg/watch
go: finding module for package github.com/open-kingfisher/king-utils/common/handle
go: finding module for package k8s.io/client-go/rest
go: finding module for package github.com/open-kingfisher/king-utils/common/log
go: finding module for package k8s.io/api/core/v1
go: finding module for package github.com/gin-gonic/gin
go: finding module for package google.golang.org/grpc/codes
go: finding module for package google.golang.org/grpc/status
go: finding module for package github.com/golang/protobuf/proto
go: finding module for package github.com/open-kingfisher/king-utils/middleware/Validator
go: downloading github.com/golang/protobuf v1.4.0
go: found github.com/gin-gonic/gin in github.com/gin-gonic/gin v1.6.2
go: found github.com/open-kingfisher/king-utils/common in github.com/open-kingfisher/king-utils v0.0.0-20200422073733-6505a8c88560
go: found google.golang.org/grpc in google.golang.org/grpc v1.29.0
go: found k8s.io/api/core/v1 in k8s.io/api v0.18.2
go: found github.com/golang/protobuf/proto in github.com/golang/protobuf v1.4.0
go: found github.com/docker/docker/pkg/term in github.com/docker/docker v1.13.1
go: found github.com/pkg/errors in github.com/pkg/errors v0.9.1
go: found golang.org/x/net/websocket in golang.org/x/net v0.0.0-20200421231249-e086a090c8fd
go: found k8s.io/client-go/kubernetes in k8s.io/client-go v11.0.0+incompatible
go: found github.com/prometheus/client_golang/api/prometheus/v1 in github.com/prometheus/client_golang v1.5.1
go: found golang.org/x/sync/errgroup in golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a
go: found k8s.io/apimachinery/pkg/apis/meta/v1 in k8s.io/apimachinery v0.18.2
go: found k8s.io/kubernetes/pkg/client/conditions in k8s.io/kubernetes v1.18.2
go: found k8s.io/metrics/pkg/apis/custom_metrics/v1beta2 in k8s.io/metrics v0.18.2
go: found github.com/dgrijalva/jwt-go in github.com/dgrijalva/jwt-go v3.2.0+incompatible
go: k8s.io/kubernetes@v1.18.2 requires
	k8s.io/api@v0.0.0: reading k8s.io/api/go.mod at revision v0.0.0: unknown revision v0.0.0

What you expected to happen:
go mod tidy command Install dependencies

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

Environment:

• Kubernetes version (use kubectl version):
• Cloud provider or hardware configuration:
• OS (e.g: cat /etc/os-release):
• Kernel (e.g. uname -a):
• Install tools:
• Network plugin and version (if this is a network-related bug):
• Others:
  go 1.14
  /sig Release

[liggitt]

go: k8s.io/kubernetes@v1.18.2 requires ...

This is caused by depending on k8s.io/kubernetes directly as a library, which is not supported. The components intended to be used as libraries are published as standalone modules like k8s.io/api, k8s.io/apimachinery, k8s.io/client-go, etc, and can be referenced directly.

If you want to do this anyway, see discussion in #79384 about how you can workaround the v0.0.0 requirements.

[runseason]

go: k8s.io/kubernetes@v1.21.0 requires
k8s.io/api@v0.0.0: unrecognized import path "k8s.io/api" (https fetch: Get https://k8s.io/api?go-get=1: x509: certificate signed by unknown authority)