My colleague Ashish Hanwadikar wrote a quick post on Linkedin on discovering ESX servers in the same subnet. Here is the post: “VMware ESX servers have SLP (Service Discovery Protocol) enabled by default making it easy to discover all ESX servers in a given subnet through any SLP client. For example, on linux, running the … Read more
With a lot of servers in my lab, I run into my fair share of ESX boot medium issues in the lab. Typically this exhibits weird issues where the ESX host is online, VMs are incredibly slow or completely hung and ping-able. The quickest way I would determine of the boot media (USB, SD card, … Read more
I saw a self-adhesive temperature strip in front of a rack when I was at a co-location center earlier last week where I thought I can really use in my lab. I have an Avtech room temperature probe in my lab that works great. Sensors everywhere, can monitor via web browser, automated email alerts, etc. … Read more
One of my colleagues had deployed an Ubuntu 14.04 (desktop) VM to run as his infrastructure VM. When everything has been set and done in his sandbox environment, for some reason he could not set his static IP address. I’ve verified that the static IP config is set properly in /etc/network/interfaces to make sure we … Read more
I ran into an interesting issue on one of my FreeNAS servers where I had let the zfs storage pool fill up and I was unable to delete any data. My freenas Version: FreeNAS-9.1.1-RELEASE-x86 [root@mackynas1] /mnt/share1/# rm -f test.dat rm: test.dat: Disc quota exceeded I had a couple options: Expand the pool by getting rid … Read more
Are you a constantly managing multiple Linux nodes and doing a lot of copy/paste to 6+ terminal sessions? Wish you can just type and execute commands once and all your SSH windows get auto-magically filled? Enter: mssh. What is it? This tool connects to multiple servers and opens them up into one terminal window. You type … Read more
This is a cool thing I’ve found out: You can see the ESXi Direct Console User Interface (DCUI) via SSH! Normally you can see this yellow/gray console via monitor into your physical ESXi host, connect via IPMI/iDRAC/iLO, or via console when running a nested ESXi VM. There is not much real practical use out of … Read more