VictoriaMetrics TLS handshake failure

TLS handshake failures can occur due to incorrect certificate configurations or expired certificates.

Understanding VictoriaMetrics

VictoriaMetrics is a fast, cost-effective, and scalable time-series database and monitoring solution. It is designed to handle large volumes of data and is often used for monitoring systems, applications, and infrastructure. VictoriaMetrics supports Prometheus querying API, making it compatible with existing Prometheus setups.

Identifying the TLS Handshake Failure Symptom

When using VictoriaMetrics, you may encounter a TLS handshake failure. This issue typically manifests as an error message indicating that the TLS handshake could not be completed. This can prevent secure communication between clients and the VictoriaMetrics server.

Common Error Messages

Some common error messages associated with TLS handshake failures include:

tls: handshake failure
tls: certificate expired
tls: unknown certificate authority

Exploring the Root Cause of the Issue

The root cause of TLS handshake failures in VictoriaMetrics is often related to certificate issues. These can include:

Incorrect certificate configurations, such as mismatched hostnames or incorrect paths.
Expired certificates that are no longer valid for secure communication.
Certificates signed by an untrusted certificate authority (CA).

Certificate Configuration Errors

Ensure that the certificates are correctly configured in your VictoriaMetrics setup. This includes verifying that the certificate paths are correct and that the certificates match the expected hostnames.

Steps to Fix the TLS Handshake Failure

To resolve TLS handshake failures, follow these steps:

Step 1: Verify Certificate Validity

Check the expiration date of your certificates. You can use the following command to view certificate details:

openssl x509 -in /path/to/certificate.crt -text -noout

Ensure that the certificate is not expired. If it is, renew the certificate with your certificate authority.

Step 2: Validate Certificate Configuration

Ensure that the certificate paths and hostnames are correctly configured in your VictoriaMetrics setup. Check your configuration files for any discrepancies.

Step 3: Update Expired Certificates

If your certificates are expired, renew them through your certificate authority. Update the VictoriaMetrics configuration with the new certificate paths.

Step 4: Verify Certificate Authority

Ensure that the certificates are signed by a trusted certificate authority. If necessary, add the CA certificate to your trusted store.

Additional Resources

For more information on configuring TLS with VictoriaMetrics, refer to the official VictoriaMetrics documentation. Additionally, you can explore OpenSSL documentation for more details on handling certificates.

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