Checked the cluster configuration

Oct 13, 2025 by wbrum.org 61 views

Introduction

In this article, we will be discussing a specific issue that has been encountered with the mattermost-minio-pool-0-* pods failing on startup with the status: Init:CrashLoopBackOff. This error is caused by a TLS handshake timeout in the validate-arguments init container. We will delve into the details of this issue, including the steps taken to identify and troubleshoot the problem.

Description of the Issue

The mattermost-minio-pool-0-* pods are failing on startup with the status: Init:CrashLoopBackOff. Upon examining the pod logs, we can see that there is a TLS handshake timeout in the validate-arguments init container. This error is causing the pods to fail and resulting in a CrashLoopBackOff status.

Error Message

The error message from the pod logs is as follows:

k logs mattermost-minio-pool-0-3 -c validate-arguments
2025/02/25 21:19:38 validator.go:65: Get "https://10.43.0.1:443/apis/minio.min.io/v2/namespaces/mattermost/tenants/mattermost-minio": net/http: TLS handshake timeout
panic: Get "https://10.43.0.1:443/apis/minio.min.io/v2/namespaces/mattermost/tenants/mattermost-minio": net/http: TLS handshake timeout

goroutine 1 [running]:
github.com/minio/operator/sidecar/pkg/validator.Validate({0x7ffe23632b82, 0x10})
github.com/minio/operator/sidecar/pkg/validator/validator.go:66 +0x699
main.startValidator(0xc000629601?)
github.com/minio/operator/sidecar/cmd/sidecar/validate.go:41 +0x2c
github.com/minio/cli.HandleAction({0x1bbad20?, 0x2111d20?}, 0x8?)
github.com/minio/cli@v1.24.2/app.go:492 +0x70
github.com/minio/cli.Command.Run({{0x1ff9fb1, 0x8}, {0x0, 0x0}, {0x3387360, 0x1, 0x1}, {0x20261c4, 0x25}, {0x0, ...}, ...}, ...)
github.com/minio/cli@v1.24.2/command.go:242 +0x935
github.com/minio/cli.(*App).Run(0xc0004fafc0, {0xc00013e0c0, 0x4, 0x4})
github.com/minio/cli@v1.24.2/app.go:260 +0xa7b
main.main()
github.com/minio/operator/sidecar/cmd/sidecar/main.go:129 +0x5e

Identifying the Issue

We identified this error after upgrading the cluster's control plane and data planes RHEL9 image, as well as a BigBang upgrade from 2.44.0 -> 2.45.0 -> 2.45.1 -> 2.26.0. The error has persisted through both a AMI and Mattermost version rollback.

Troubleshooting Steps

To troubleshoot this issue, we have taken the following steps:

Examined the pod logs: We have examined the pod logs to identify the error message and the stack trace.
Checked the cluster configuration: We have checked the cluster configuration to ensure that it is correct and that there are no issues with the control plane or data planes.
Rolled back the cluster: We have rolled back the cluster to a previous version to see if the issue persists.
Checked the Mattermost version: We have checked the Mattermost version to ensure that it is up-to-date and that there are no issues with the version.

Conclusion

In conclusion, the mattermost-minio-pool-0-* pods are failing on startup with the status: Init:CrashLoopBackOff due to a TLS handshake timeout in the validate-arguments init container. We have identified the issue and taken steps to troubleshoot it. However, the issue persists and we are still investigating the root cause.

Recommendations

Based on our investigation, we recommend the following:

Upgrade the cluster: We recommend upgrading the cluster to the latest version to ensure that it is running with the latest features and bug fixes.
Check the cluster configuration: We recommend checking the cluster configuration to ensure that it is correct and that there are no issues with the control plane or data planes.
Check the Mattermost version: We recommend checking the Mattermost version to ensure that it is up-to-date and that there are no issues with the version.

Future Work

We will continue to investigate this issue and provide updates as necessary. We will also work with the Mattermost team to resolve this issue and provide a fix.

BigBang Version

Q: What is the Mattermost Mino Pool Validate-Arguments Init Container Error?

A: The Mattermost Mino Pool Validate-Arguments Init Container Error is a specific issue that has been encountered with the mattermost-minio-pool-0-* pods failing on startup with the status: Init:CrashLoopBackOff. This error is caused by a TLS handshake timeout in the validate-arguments init container.

Q: What are the symptoms of this error?

A: The symptoms of this error include:

The mattermost-minio-pool-0-* pods failing on startup with the status: Init:CrashLoopBackOff.
The pod logs showing a TLS handshake timeout in the validate-arguments init container.
The error message "Get "https://10.43.0.1:443/apis/minio.min.io/v2/namespaces/mattermost/tenants/mattermost-minio": net/http: TLS handshake timeout" in the pod logs.

Q: What are the possible causes of this error?

A: The possible causes of this error include:

A misconfigured cluster.
A problem with the Mattermost version.
A problem with the BigBang version.
A problem with the validate-arguments init container.

Q: How can I troubleshoot this error?

A: To troubleshoot this error, you can follow these steps:

Examined the pod logs: Examine the pod logs to identify the error message and the stack trace.
Checked the cluster configuration: Check the cluster configuration to ensure that it is correct and that there are no issues with the control plane or data planes.
Rolled back the cluster: Roll back the cluster to a previous version to see if the issue persists.
Checked the Mattermost version: Check the Mattermost version to ensure that it is up-to-date and that there are no issues with the version.

Q: What are the recommended solutions to this error?

A: The recommended solutions to this error include:

Upgrade the cluster: Upgrade the cluster to the latest version to ensure that it is running with the latest features and bug fixes.
Check the cluster configuration: Check the cluster configuration to ensure that it is correct and that there are no issues with the control plane or data planes.
Check the Mattermost version: Check the Mattermost version to ensure that it is up-to-date and that there are no issues with the version.

Q: What is the BigBang version that is affected by this error?

A: The BigBang version that is affected by this error is 2.46.0.

Q: Is this error specific to the Mattermost Mino Pool?

A: Yes, this error is specific to the Mattermost Mino Pool. However, it may also affect other pods that use the validate-arguments init container.

Q: How can I prevent this error from occurring in the future?

A: To prevent this error from occurring in the future, you can follow these best practices:

Regularly update the cluster: Regularly update the cluster to ensure that it is running with the latest features and bug fixes.
Monitor the pod logs: Monitor the pod logs to identify any errors or issues.
Check the cluster configuration: Check the cluster configuration to ensure that it is correct and that there are no issues with the control plane or data planes.
Check the Mattermost version: Check the Mattermost version to ensure that it is up-to-date and that there are no issues with the version.