Agent connectivity issue on legacy systems

Incident Report for Netdata

Resolved

Following a scheduled TLS certificate renewal, a subset of Netdata agents failed to reconnect to Netdata Cloud. The issue stems from outdated CA (Certificate Authority) trust stores on certain legacy Linux distributions, like:
• CentOS 7 / RHEL 7
• Amazon Linux 2
• Debian 9 (Jessie)
• Ubuntu 16.04 LTS
• Oracle Linux 7

A quick way to test for this: curl -v https://app.netdata.cloud
If the output shows an error indicating the certificate has expired, the system needs an updated CA bundle.

Posted May 29, 2026 - 06:00 UTC