June 12, 2025

Cryostat 4.0.1 is Released!

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Table of Contents

• Table of Contents
• What’s Fixed in 4.0.1?
• Where can I get the latest version of Cryostat?
• Feedback

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Hello everyone,

We are pleased to announce the release of Cryostat 4.0.1! This is a minor bugfix release addressing some issues uncovered with the previous 4.0.0 feature release.

What’s Fixed in 4.0.1?

1. Routine maintenance: dependency version updates and container base image version updates
2. Cryostat Automated Rules error handling was improved
3. Cryostat Discovery only Custom Targets should be deletable
4. Cryostat Discovery handles Kubernetes Services (Endpoints) which have nil targets
5. Cryostat Agent logging goes to stdout by default, not stderr, can be configured using Agent properties overrides arguments, and passes down log level to the Red Hat Insights client
6. Cryostat Agent shutdown avoids a potential NPE
7. Cryostat Agent recording queries include recordings started by the Agent’s own Harvester facility
8. Cryostat Agent startup performs callback DNS resolution within the discovery registration loop, not only once on startup
9. Cryostat Operator autoconfig allows control of the Agent’s log level, and disables Agent logging by default
10. Cryostat Operator secrets/configmaps are hashed and appended to Deployment pod templates so that configuration updates like renewed certificates cause a rollout
11. Cryostat Operator reports sidecars are correctly configured so that they handle automated analysis report generations
12. Cryostat OpenShift Console Plugin proxy handles connection failures to upstream Cryostat instances gracefully, avoiding proxy restart
13. Cryostat OpenShift Console Plugin dashboard correctly updates MBean Metrics charts
14. Cryostat Storage volumes configuration by the entrypoint script respects the underlying implementation’s enforced limits

For further details on these items, check the GitHub Discussions release announcement.

Where can I get the latest version of Cryostat?

You can install Cryostat using our Kubernetes operator on OperatorHub.io or via a Helm Chart . As always, you can also run Cryostat in other environments with a little more manual setup.

If this is your first time installing Cryostat on Kubernetes, you can Get Started right here on this website.

If you had previously installed Cryostat Operator 4.0.0 with OLM, then you may have already been upgraded to 4.0.1, or else you should be able to approve and install the upgrade.

Feedback

Please reach out to the Cryostat mailing list or GitHub Discussion with any questions or comments.