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// This file is part of MinIO Console Server
// Copyright (c) 2021 MinIO, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cluster
import (
"io/ioutil"
"net"
"net/http"
"strings"
"time"
xhttp "gitee.com/whubbledb/console/pkg/http"
"gitee.com/whubbledb/console/pkg/utils"
"github.com/minio/pkg/env"
)
func GetK8sAPIServer() string {
// if console is running inside a k8s pod KUBERNETES_SERVICE_HOST and KUBERNETES_SERVICE_PORT will contain the k8s api server apiServerAddress
// if console is not running inside k8s by default will look for the k8s api server on localhost:8001 (kubectl proxy)
// NOTE: using kubectl proxy is for local development only, since every request send to localhost:8001 will bypass service account authentication
// more info here: https://kubernetes.io/docs/tasks/access-application-cluster/access-cluster/#directly-accessing-the-rest-api
// you can override this using CONSOLE_K8S_API_SERVER, ie use the k8s cluster from `kubectl config view`
host, port := env.Get("KUBERNETES_SERVICE_HOST", ""), env.Get("KUBERNETES_SERVICE_PORT", "")
apiServerAddress := "http://localhost:8001"
if host != "" && port != "" {
apiServerAddress = "https://" + net.JoinHostPort(host, port)
}
return env.Get(ConsoleK8sAPIServer, apiServerAddress)
}
// If CONSOLE_K8S_API_SERVER_TLS_ROOT_CA is true console will load the certificate into the
// http.client rootCAs pool, this is useful for testing an k8s ApiServer or when working with self-signed certificates
func getK8sAPIServerTLSRootCA() string {
return strings.TrimSpace(env.Get(ConsoleK8SAPIServerTLSRootCA, ""))
}
// GetNsFromFile assumes console is running inside a k8s pod and extract the current namespace from the
// /var/run/secrets/kubernetes.io/serviceaccount/namespace file
func GetNsFromFile() string {
dat, err := ioutil.ReadFile("/var/run/secrets/kubernetes.io/serviceaccount/namespace")
if err != nil {
return "default"
}
return string(dat)
}
// GetMinioImage returns the image URL to be used when deploying a MinIO instance, if there is
// a preferred image to be used (configured via ENVIRONMENT VARIABLES) GetMinioImage will return that
// if not, GetMinioImage will try to obtain the image URL for the latest version of MinIO and return that
func GetMinioImage() (*string, error) {
image := strings.TrimSpace(env.Get(ConsoleMinioImage, ""))
// if there is a preferred image configured by the user we'll always return that
if image != "" {
return &image, nil
}
latestMinIOImage, errLatestMinIOImage := utils.GetLatestMinIOImage(
&xhttp.Client{
Client: &http.Client{
Timeout: 5 * time.Second,
},
})
if errLatestMinIOImage != nil {
return nil, errLatestMinIOImage
}
return latestMinIOImage, nil
}
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