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WIP: allow operator to run both in- and out- of cluster.

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This commit is contained in:
Oleksii Kliukin
2017-05-08 12:10:26 +02:00
committed by Murat Kabilov
parent 5b5a64e55d
commit 38bc9da25a
4 changed files with 64 additions and 32 deletions
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pkg/controller/operator.go
+12 -10
View File
@@ -31,21 +31,23 @@ type Options struct {
KubeConfig string
}
func KubernetesConfig(options Options) *rest.Config {
rules := clientcmd.NewDefaultClientConfigLoadingRules()
overrides := &clientcmd.ConfigOverrides{}
if options.KubeConfig != "" {
func KubernetesConfig(options Options) (config *rest.Config, is_in_cluster bool) {
var err error
is_in_cluster = (options.KubeConfig == "")
if !is_in_cluster {
/* out-of-cluster process */
rules := clientcmd.NewDefaultClientConfigLoadingRules()
overrides := &clientcmd.ConfigOverrides{}
rules.ExplicitPath = options.KubeConfig
config, err = clientcmd.NewNonInteractiveDeferredLoadingClientConfig(rules, overrides).ClientConfig()
} else {
/* in-cluster pod */
config, err = rest.InClusterConfig()
}
config, err := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(rules, overrides).ClientConfig()
if err != nil {
log.Fatalf("Couldn't get Kubernetes default config: %s", err)
}
return config
return
}
func newKubernetesSpiloClient(c *rest.Config) (*rest.RESTClient, error) {
pkg/controller/spilo.go
+28 -22
View File
@@ -10,7 +10,7 @@ import (
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"github.bus.zalan.do/acid/postgres-operator/pkg/etcd"
"github.bus.zalan.do/acid/postgres-operator/pkg/etcd"
)
type SpiloOperator struct {
@@ -19,36 +19,42 @@ type SpiloOperator struct {
ClientSet *kubernetes.Clientset
Client *rest.RESTClient
Controller *SpiloController
EtcdClient *etcd.EtcdClient
EtcdClient *etcd.EtcdClient
}
func getEtcdServiceName(cls *kubernetes.Clientset, config *rest.Config, is_in_cluster bool) (etcdServiceName string) {
etcdService, _ := cls.Services("default").Get("etcd-client")
if is_in_cluster {
if len(etcdService.Spec.Ports) != 1 {
log.Fatal("Can't find Etcd service named 'etcd-client'")
}
etcdServiceName = fmt.Sprintf("%s.%s.svc.cluster.local", etcdService.Name, etcdService.Namespace)
} else {
ports := etcdService.Spec.Ports[0]
if ports.NodePort == 0 {
log.Fatal("Etcd port is not exposed\nHint: add NodePort to your Etcd service")
}
nodeurl, _ := url.Parse(config.Host)
etcdServiceName = fmt.Sprintf("http://%s:%d", strings.Split(nodeurl.Host, ":")[0], ports.NodePort)
}
return
}
func New(options Options) *SpiloOperator {
config := KubernetesConfig(options)
clientSet, err := kubernetes.NewForConfig(config)
if err != nil {
log.Fatalf("Couldn't create Kubernetes client: %s", err)
}
etcdService, _ := clientSet.Services("default").Get("etcd-client")
if len(etcdService.Spec.Ports) != 1 {
log.Fatalln("Can't find Etcd cluster")
}
ports := etcdService.Spec.Ports[0]
nodeurl, _ := url.Parse(config.Host)
if ports.NodePort == 0 {
log.Fatalln("Etcd port is not exposed")
}
etcdHostOutside := fmt.Sprintf("http://%s:%d", strings.Split(nodeurl.Host, ":")[0], ports.NodePort)
config, is_in_cluster := KubernetesConfig(options)
spiloClient, err := newKubernetesSpiloClient(config)
if err != nil {
log.Fatalf("Couldn't create Spilo client: %s", err)
}
etcdClient := etcd.NewEctdClient(etcdHostOutside)
clientSet, err := kubernetes.NewForConfig(config)
if err != nil {
log.Fatalf("Couldn't create Kubernetes client: %s", err)
}
etcdClient := etcd.NewEctdClient(getEtcdServiceName(clientSet, config, is_in_cluster))
operator := &SpiloOperator{
Options: options,