Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Use eks:cluster-name as clusterId #856

Merged
merged 8 commits into from
Mar 4, 2020
Merged

Use eks:cluster-name as clusterId #856

Changes from 7 commits
Commits
Show all changes
8 commits
Select commit Hold shift + click to select a range
d267b1e
Use eks:cluster-name as clusterId
groodt Feb 28, 2020
241b2f7
Address comments from review.
groodt Mar 3, 2020
d565f64
Merge branch 'master' into groodt-eks-cluster-name-tag
groodt Mar 3, 2020
0a279dc
Slices aren't constants.
groodt Mar 3, 2020
b6b103e
gofmt
groodt Mar 3, 2020
bbf3ae2
Address comments from review.
groodt Mar 3, 2020
7973706
Address comments from review.
groodt Mar 3, 2020
dd05d1a
Fix logic.
groodt Mar 3, 2020
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
39 changes: 29 additions & 10 deletions pkg/publisher/publisher.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,18 @@ const (

// maxDataPoints is the maximum number of data points per PutMetricData API request
maxDataPoints = 20

// Default cluster id if unable to detect something more suitable
defaultClusterID = "k8s-cluster"
)

var (
// List of EC2 tags (in priority order) to use as the CLUSTER_ID metric dimension
clusterIDTags = []string{
"eks:cluster-name",
"CLUSTER_ID",
"Name",
}
)

// Publisher defines the interface to publish one or more data points
Expand Down Expand Up @@ -84,16 +96,7 @@ func New(ctx context.Context) (Publisher, error) {
if err != nil {
return nil, errors.Wrap(err, "publisher: unable to obtain EC2 service client")
}
clusterID, err := ec2Client.GetClusterTag("CLUSTER_ID")
if err != nil || clusterID == "" {
glog.Errorf("Failed to obtain cluster-id, fetching name. %v", err)
clusterID, err = ec2Client.GetClusterTag("Name")
if err != nil || clusterID == "" {
glog.Errorf("Failed to obtain cluster-id or name, defaulting to 'k8s-cluster'. %v", err)
clusterID = "k8s-cluster"
}
}
glog.Info("Using cluster ID ", clusterID)
clusterID := getClusterID(ec2Client)

// Get CloudWatch client
ec2MetadataClient := ec2metadatawrapper.New(nil)
Expand Down Expand Up @@ -207,6 +210,22 @@ func (p *cloudWatchPublisher) getCloudWatchMetricNamespace() *string {
return aws.String(cloudwatchMetricNamespace)
}

func getClusterID(ec2Client *ec2wrapper.EC2Wrapper) string {
var clusterID string
var err error
for _, tag := range clusterIDTags {
clusterID, err = ec2Client.GetClusterTag(tag)
if err != nil && clusterID != "" {
break
}
}
if clusterID == "" {
clusterID = defaultClusterID
}
glog.Info("Using cluster ID ", clusterID)
return clusterID
}
mogren marked this conversation as resolved.
Show resolved Hide resolved

func (p *cloudWatchPublisher) getCloudWatchMetricDatumDimensions() []*cloudwatch.Dimension {
return []*cloudwatch.Dimension{
{
Expand Down