In a recent troubleshooting session, my team noticed an alarming surge in DNS queries and puzzling etcd error messages on two of our hosts. Despite having no firewall rules in place to block traffic, we discovered that the etcd service was rejecting connections. Had an old configuration change finally come back to haunt us? The answer may surprise you.
Logs
Detect Unusual iDRAC Authentications using Aria Operations for Logs
In this post, we enhance our security posture by configuring Aria Operations for Logs to send alert e-mail notifications when unusual logon events are detected on a Dell iDRAC.
Problem Investigation: Virtual Machines Intermittently Hang at Blank Screen on Reboot
In this post, we discuss a real-world problem investigation where VMs experienced sporadic freezes during reboot, resulting in Production impact.