fix(operator): truncate sidecar pod injected label to 63 chars #2250
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pkg/sidecar/pod.go
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| @@ -53,7 +53,7 @@ func add(cfg config.Config, logger logr.Logger, otelcol v1alpha1.OpenTelemetryCo | |||
| if pod.Labels == nil { | |||
| pod.Labels = map[string]string{} | |||
| } | |||
| pod.Labels[label] = fmt.Sprintf("%s.%s", otelcol.Namespace, otelcol.Name) | |||
| pod.Labels[label] = naming.Truncate("%s.%s", 63, otelcol.Namespace, otelcol.Name) | |||
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suggestion: instead of truncating here, could make a method called naming.SidecarLabel in the naming package?
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Could you also rename the label variable which IMO is a very nondescript name 😓
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How about naming.PodInstanceLabel? The same logic is used in a few other places so I figured we could reuse this function but couldn't think of a great name.
Also I renamed label to injectedLabel. How's that?
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@RoVernekar youll need to fill out the CLA before we can merge |
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Sorry for the delay, should be good now. |
internal/naming/main.go
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| @@ -124,3 +124,8 @@ func ServiceMonitor(otelcol string) string { | |||
| func TargetAllocatorServiceAccount(otelcol string) string { | |||
| return DNSName(Truncate("%s-targetallocator", 63, otelcol)) | |||
| } | |||
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| // PodInstanceLabel returns a label value containing the namespace and instance name. | |||
| func PodInstanceLabel(namespace string, otelcol string) string { | |||
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is Pod the right prefix we want to use? Shouldn't this be just InstanceLabel ?
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I would revert other changes in this PR . The naming/main.go is used for k8s object names.
Or expose this function in the labels.go
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Okay I went back to the original changes. Let me know if you would prefer I expose this in labels.go instead.
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@pavolloffay can you take another look at this when you get a chance?
pkg/sidecar/pod.go
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| @@ -53,7 +53,7 @@ func add(cfg config.Config, logger logr.Logger, otelcol v1alpha1.OpenTelemetryCo | |||
| if pod.Labels == nil { | |||
| pod.Labels = map[string]string{} | |||
| } | |||
| pod.Labels[label] = fmt.Sprintf("%s.%s", otelcol.Namespace, otelcol.Name) | |||
| pod.Labels[injectedLabel] = naming.PodInstanceLabel(otelcol.Namespace, otelcol.Name) | |||
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review note: this is the fix of the issue
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…telemetry#2250) Refs: open-telemetry#1032 Co-authored-by: Jacob Aronoff <jaronoff97@users.noreply.github.com>
Description:
Truncate
sidecar.opentelemetry.io/injectedsidecar pod label to 63 characters since Kubernetes labels must be 63 characters or less.Link to tracking Issue:
resolves #1031
Testing:
Tested with a unit test in
pod_test.go.Documentation: