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Merge pull request #1467 from aledbf/change-client

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Automatic merge from submit-queue

[nginx-ingress-controller]: Use ClientConfig to configure connection

fixes #1459

Running with `docker run`:
```
core@localhost ~ $ docker run -it aledbf/nginx-third-party:0.31 bash
root@f6a96f46eab0:/# export KUBERNETES_MASTER=http://172.17.4.99:8080
root@f6a96f46eab0:/# /nginx-ingress-controller --default-backend-service=default/nginx-errors
I0802 14:44:58.604384       7 main.go:94] Using build: https://github.com/aledbf/contrib - git-5b9146a
W0802 14:44:58.605282       7 main.go:118] unexpected error getting runtime information: unable to get POD information (missing POD_NAME or POD_NAMESPACE environment variable)
I0802 14:44:58.607270       7 main.go:123] Validated default/nginx-errors as the default backend
W0802 14:44:58.611322       7 ssl.go:132] no file dhparam.pem found in secrets
I0802 14:44:58.615637       7 controller.go:1128] starting NGINX loadbalancer controller
I0802 14:44:58.615902       7 command.go:35] Starting NGINX process...
```

Running inside in a cluster:
```
I0802 14:47:50.254736       1 main.go:94] Using build: https://github.com/aledbf/contrib - git-5b9146a
I0802 14:47:50.254920       1 merged_client_builder.go:103] No kubeconfig could be created, falling back to service account.
I0802 14:47:50.343440       1 main.go:123] Validated default/nginx-errors as the default backend
W0802 14:47:50.343677       1 ssl.go:132] no file dhparam.pem found in secrets
I0802 14:47:50.347322       1 controller.go:1128] starting NGINX loadbalancer controller
I0802 14:47:50.347870       1 command.go:35] Starting NGINX process...
```

<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.kubernetes.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.kubernetes.io/reviews/kubernetes/contrib/1467)
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This commit is contained in:
Kubernetes Submit Queue 2016-08-17 13:40:11 -07:00 committed by GitHub
commit 727a62421e
16 changed files with 35 additions and 35 deletions
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7
controllers/nginx/README.md
View file

@ -19,6 +19,7 @@ This is a nginx Ingress controller that uses [ConfigMap](https://github.com/kube
* [NGINX customization](configuration.md)
* [NGINX status page](#nginx-status-page)
* [Disabling NGINX ingress controller](#disabling-nginx-ingress-controller)
* [Local cluster](#local-cluster)
* [Debug & Troubleshooting](#troubleshooting)
* [Limitations](#limitations)
* [NGINX Notes](#nginx-notes)
@ -343,6 +344,12 @@ To extract the information in JSON format the module provides a custom URL: `/ng
Setting the annotation `kubernetes.io/ingress.class` to any value other than "nginx" or the empty string, will force the NGINX Ingress controller to ignore your Ingress. Do this if you wish to use one of the other Ingress controllers at the same time as the NGINX controller.
### Local cluster
Using [`hack/local-up-cluster.sh`](https://github.com/kubernetes/kubernetes/blob/master/hack/local-up-cluster.sh) is possible to start a local kubernetes cluster consisting of a master and a single node. Please read [running-locally.md](https://github.com/kubernetes/kubernetes/blob/master/docs/devel/running-locally.md) for more details.
Use of `hostNetwork: true` in the ingress controller is required to falls back at localhost:8080 for the apiserver if every other client creation check fails (eg: service account not present, kubeconfig doesn't exist, no master env vars...)
### Debug & Troubleshooting

2
controllers/nginx/examples/custom-configuration/rc-custom-configuration.yaml
View file

@ -22,7 +22,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

2
controllers/nginx/examples/custom-errors/rc-custom-errors.yaml
View file

@ -22,7 +22,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

2
controllers/nginx/examples/custom-template/custom-template.yaml
View file

@ -22,7 +22,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

2
controllers/nginx/examples/daemonset/as-daemonset.yaml
View file

@ -16,7 +16,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

2
controllers/nginx/examples/default/rc-default.yaml
View file

@ -22,7 +22,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

2
controllers/nginx/examples/full/rc-full.yaml
View file

@ -27,7 +27,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

2
controllers/nginx/examples/proxy-protocol/nginx-rc.yaml
View file

@ -22,7 +22,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

2
controllers/nginx/examples/sysctl/change-proc-values-rc.yaml
View file

@ -95,7 +95,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

2
controllers/nginx/examples/tcp/rc-tcp.yaml
View file

@ -22,7 +22,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

2
controllers/nginx/examples/tls/rc-ssl.yaml
View file

@ -22,7 +22,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

2
controllers/nginx/examples/udp/rc-udp.yaml
View file

@ -22,7 +22,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

27
controllers/nginx/main.go
View file

@ -38,7 +38,7 @@ import (
)
const (
healthPort = 10249
healthPort = 10254
)
var (
@ -56,10 +56,6 @@ var (
nxgConfigMap = flags.String("nginx-configmap", "",
`Name of the ConfigMap that containes the custom nginx configuration to use`)
inCluster = flags.Bool("running-in-cluster", true,
`Optional, if this controller is running in a kubernetes cluster, use the
pod secrets for creating a Kubernetes client.`)
tcpConfigMapName = flags.String("tcp-services-configmap", "",
`Name of the ConfigMap that containes the definition of the TCP services to expose.
The key in the map indicates the external port to be used. The value is the name of the
@ -91,7 +87,6 @@ var (
)
func main() {
var kubeClient *unversioned.Client
flags.AddGoFlagSet(flag.CommandLine)
flags.Parse(os.Args)
clientConfig := kubectl_util.DefaultClientConfig(flags)
@ -107,26 +102,20 @@ func main() {
glog.Fatalf("Please specify --default-backend-service")
}
var err error
if *inCluster {
kubeClient, err = unversioned.NewInCluster()
} else {
config, connErr := clientConfig.ClientConfig()
if connErr != nil {
config, err := clientConfig.ClientConfig()
if err != nil {
glog.Fatalf("error connecting to the client: %v", err)
}
kubeClient, err = unversioned.New(config)
}
kubeClient, err := unversioned.New(config)
if err != nil {
glog.Fatalf("failed to create client: %v", err)
}
runtimePodInfo := &podInfo{NodeIP: "127.0.0.1"}
if *inCluster {
runtimePodInfo, err = getPodDetails(kubeClient)
runtimePodInfo, err := getPodDetails(kubeClient)
if err != nil {
glog.Fatalf("unexpected error getting runtime information: %v", err)
}
runtimePodInfo = &podInfo{NodeIP: "127.0.0.1"}
glog.Warningf("unexpected error getting runtime information: %v", err)
}
if err := isValidService(kubeClient, *defaultSvc); err != nil {
glog.Fatalf("no service with name %v found: %v", *defaultSvc, err)

2
controllers/nginx/nginx/utils.go
View file

@ -228,7 +228,7 @@ func diff(b1, b2 []byte) (data []byte, err error) {
func sysctlSomaxconn() int {
maxConns, err := sysctl.GetSysctl("net/core/somaxconn")
if err != nil || maxConns < 512 {
glog.Warningf("system net.core.somaxconn=%v. Using NGINX default (511)", maxConns)
glog.V(3).Infof("system net.core.somaxconn=%v. Using NGINX default (511)", maxConns)
return 511
}

2
controllers/nginx/rc.yaml
View file

@ -74,7 +74,7 @@ spec:
livenessProbe:
httpGet:
path: /healthz
port: 10249
port: 10254
scheme: HTTP
initialDelaySeconds: 30
timeoutSeconds: 5

6
controllers/nginx/utils.go
View file

@ -119,6 +119,10 @@ func getPodDetails(kubeClient *unversioned.Client) (*podInfo, error) {
podName := os.Getenv("POD_NAME")
podNs := os.Getenv("POD_NAMESPACE")
if podName == "" && podNs == "" {
return nil, fmt.Errorf("unable to get POD information (missing POD_NAME or POD_NAMESPACE environment variable")
}
err := waitForPodRunning(kubeClient, podNs, podName, time.Millisecond*200, time.Second*30)
if err != nil {
return nil, err
@ -126,7 +130,7 @@ func getPodDetails(kubeClient *unversioned.Client) (*podInfo, error) {
pod, _ := kubeClient.Pods(podNs).Get(podName)
if pod == nil {
return nil, fmt.Errorf("Unable to get POD information")
return nil, fmt.Errorf("unable to get POD information")
}
node, err := kubeClient.Nodes().Get(pod.Spec.NodeName)