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Let it work when no metadata is available #79

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Let it work when no metadata is available #79

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9 changes: 8 additions & 1 deletion pkg/aws/util.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ package aws
import (
"io/ioutil"
"net/http"
"os"

"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/cloudwatch"
Expand All @@ -11,8 +12,14 @@ import (
"k8s.io/klog"
)

// GetLocalRegion gets the region ID from the instance metadata.
// GetLocalRegion gets the region ID from the standard environment variables or instance metadata.
func GetLocalRegion() string {
if mp := os.Getenv("AWS_DEFAULT_REGION"); mp != "" {
return mp
}
if mp := os.Getenv("AWS_REGION"); mp != "" {
return mp
}
resp, err := http.Get("http://169.254.169.254/latest/meta-data/placement/availability-zone/")
if err != nil {
klog.Errorf("unable to get current region information, %v", err)
Expand Down