Monthly Archives: December 2019

Upgraded a Supermicro CSE-836 from 3 pin fans to 4 pin PWM fans. Here is the before and after matrix of part numbers: Before Middle Fans (Qty 3) FAN-0070L 672042003884 San Ace 80 9G0812G103 Rear Exhaust Fans (Qty 2) FAN-0062L … Continue reading →

When trying to update/upgrade ESXi 6.7.0 Update 3 (via software profile update command) you may run into the following error below. This was a host running specifically Update 3 build 15018017 trying to update to build 15160138. [InstallationError] [Errno 28] … Continue reading →

When trying to update a CentOS 7 system after an extended amount of time, I ran into this error: Downloading packages: warning: /var/cache/yum/x86_64/7/ius/packages/yum-plugin-replace-0.2.7-1.ius.el7.noarch.rpm: Header V4 RSA/SHA256 Signature, key ID 4b274df2: NOKEY Retrieving key from file:///etc/pki/rpm-gpg/IUS-COMMUNITY-GPG-KEY The GPG keys listed for … Continue reading →

Recent issue with UniFi Controller (version 5.12.35) where test emails were failing on a remote SMTP server (Postfix) configured for STARTTLS listening on port 25. The workaround was to open port 587 on the firewall and redirect it to port … Continue reading →