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Serguei Bezverkhi
2018-02-15 08:50:31 -05:00
parent 18a4ce4439
commit 1f1e8cea37
3299 changed files with 834 additions and 1051200 deletions
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38
vendor/k8s.io/client-go/examples/in-cluster-client-configuration/BUILD generated vendored
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package(default_visibility = ["//visibility:public"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_binary",
"go_library",
)
go_binary(
name = "in-cluster-client-configuration",
importpath = "k8s.io/client-go/examples/in-cluster-client-configuration",
library = ":go_default_library",
)
go_library(
name = "go_default_library",
srcs = ["main.go"],
importpath = "k8s.io/client-go/examples/in-cluster-client-configuration",
deps = [
"//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/client-go/kubernetes:go_default_library",
"//vendor/k8s.io/client-go/rest:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
)

17
vendor/k8s.io/client-go/examples/in-cluster-client-configuration/Dockerfile generated vendored
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# Copyright 2017 The Kubernetes Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
FROM debian
COPY ./app /app
ENTRYPOINT /app

50
vendor/k8s.io/client-go/examples/in-cluster-client-configuration/README.md generated vendored
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# Authenticating inside the cluster
This example shows you how to configure a client with client-go to authenticate
to the Kubernetes API from an application running inside the Kubernetes cluster.
client-go uses the [Service Account token][sa] mounted inside the Pod at the
`/var/run/secrets/kubernetes.io/serviceaccount` path when the
`rest.InClusterConfig()` is used.
## Running this example
First compile the application for Linux:
cd in-cluster-client-configuration
GOOS=linux go build -o ./app .
Then package it to a docker image using the provided Dockerfile to run it on
Kubernetes.
If you are running a [Minikube][mk] cluster, you can build this image directly
on the Docker engine of the Minikube node without pushing it to a registry. To
build the image on Minikube:
eval $(minikube docker-env)
docker build -t in-cluster .
If you are not using Minikube, you should build this image and push it to a registry
that your Kubernetes cluster can pull from.
Then, run the image in a Pod with a single instance Deployment:
$ kubectl run --rm -i demo --image=in-cluster --image-pull-policy=Never
There are 4 pods in the cluster
There are 4 pods in the cluster
There are 4 pods in the cluster
...
The example now runs on Kubernetes API and successfully queries the number of
pods in the cluster every 10 seconds.
### Clean up
To stop this example and clean up the pod, press <kbd>Ctrl</kbd>+<kbd>C</kbd> on
the `kubectl run` command and then run:
kubectl delete deployment demo
[sa]: https://kubernetes.io/docs/admin/authentication/#service-account-tokens
[mk]: https://kubernetes.io/docs/getting-started-guides/minikube/

64
vendor/k8s.io/client-go/examples/in-cluster-client-configuration/main.go generated vendored
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/*
Copyright 2016 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
// Note: the example only works with the code within the same release/branch.
package main
import (
"fmt"
"time"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
)
func main() {
// creates the in-cluster config
config, err := rest.InClusterConfig()
if err != nil {
panic(err.Error())
}
// creates the clientset
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
panic(err.Error())
}
for {
pods, err := clientset.CoreV1().Pods("").List(metav1.ListOptions{})
if err != nil {
panic(err.Error())
}
fmt.Printf("There are %d pods in the cluster\n", len(pods.Items))
// Examples for error handling:
// - Use helper functions like e.g. errors.IsNotFound()
// - And/or cast to StatusError and use its properties like e.g. ErrStatus.Message
_, err = clientset.CoreV1().Pods("default").Get("example-xxxxx", metav1.GetOptions{})
if errors.IsNotFound(err) {
fmt.Printf("Pod not found\n")
} else if statusError, isStatus := err.(*errors.StatusError); isStatus {
fmt.Printf("Error getting pod %v\n", statusError.ErrStatus.Message)
} else if err != nil {
panic(err.Error())
} else {
fmt.Printf("Found pod\n")
}
time.Sleep(10 * time.Second)
}
}