opentelemetry-operator Helm Chart 0.128.0 - Ruby Autoinstrumentation

The opentelemetry-operator Helm chart version 0.128.0 shipped on October 28, 2026. It is the chart that deploys the OpenTelemetry Operator on Kubernetes, and this release adds one user facing feature: support for Ruby autoinstrumentation. The chart is stable, not a prerelease.

The full notes and chart changes are on the GitHub release page.

Ruby autoinstrumentation

The operator already supports autoinstrumentation for several runtimes. Until now, the Helm chart did not carry the Ruby specific defaults. Version 0.128.0 closes that gap. PR #2493 adds the Ruby autoinstrumentation resources so that charts rendered from this version can inject Ruby instrumentation the same way they inject Java or Python.

For anyone running Ruby services under the operator, this means the Helm chart no longer needs manual patching after install to cover the Ruby paths. This was the first contribution from a new contributor to the chart repository.

What else changed

Not much, and that is worth saying plainly. The release notes list a single pull request. There are no breaking changes, no deprecations, and no new chart values documented in the notes. If you pin your Helm chart version, this bump is a low risk update.

The previous chart release in this series was opentelemetry-operator-0.127.1, so this is a patch level step in the numbering with one feature added on top.

Upgrade notes

Nothing to migrate. Since the only change is the addition of Ruby autoinstrumentation, existing values files should render the same output as before. Teams that do not use Ruby instrumentation gain nothing, but they lose nothing either.

Where to get it

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