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
Here is a quick tutorial on how to use Windows Remote Desktop to a Ubuntu host. Ubuntu setup: Open a terminal window on your Ubuntu host and install xrdp: apt-get install xrdp Lets set the RDP environment to use gnome echo “gnome-session –session=ubuntu-2d” > ~/.xsession Change the permissions to make it executable chmod 755 .xsession … Read more
Last night I encountered an interesting problem where my master DNS server started to fail resolving hostnames, but my secondary DNS seemed to be functional. VM setup: CentOS release 6.5 (Final) BIND 9.8.2rc1-RedHat-9.8.2-0.23.rc1.el6_5.1 All seemed fine with my DNS VM. Network is okay, no one had updated DNS records in the past day, no hardware … 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