I have about 10 servers, several routers, and 5 enterprise and open switches. I want to rewire all of these things in different configurations frequently. I also want to change the hypervisors that run on the 10 servers. i want to do this the easiest way possible. Remotely. If I’m being truly honest with myself… Read More

How to add Image to Glance For the impatient: Microstack is admittedly not my favorite way to deploy openstack, probably because it takes some getting used to. Running openstack services in isolated containers makes things more secure, easier to deploy, homogeneous.. there are so many obvious reasons Canonical did it this way. But it is… Read More

A lab is very dynamic by nature. In stark contrast, data center infrastructure is engineered to be as static as possible once it is configured. So naturally when you have a data center lab you it’s only a matter of time before you come across weird anomalies just from the act of constantly making configuration… Read More

Download package from: https://download.zerotier.com/dist/qnap/ zerotier_1.10.1_x86_64.qpkg Use WinSCP to move the file onto the NAS Install QVPN from the APP Center within QNAP SSH into the nas to the directory where you put the file with WinSCP install it with this command: sudo sh ./zerotier_1.10.1x86_64.qpkg Type the below commands line by line cd /share/CACHEDEV1_DATA/.qpkg ln -s… Read More

Both VLT peers should be configured with the same local VTEP IP address. One would complete the usual VLT config on both peers. An identical loopback IP will be configured on both peers, to serve as the Anycast IP.Other than that, there will be the usual VXLAn config[vxlan-instance xx staticlocal-vtep-ip a.b.c.dno shutvni-profile profilename-abcvnid 50remote-vtep-ip a.b.c.e… Read More

Add this repo to /etc/apt/sources.list Now run: You will receive an error like this: “The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 5EF20F34AD2074F “ Copy the characters after NO_PUBKEY from the last command and use it below YOUR PUBKEY WILL BE DIFFERENT Now that you have the correct signautures… Read More

Below is the original post that walks you through the steps to rename ZeroTier interfaces. Shortly after I posted this, Grant Limberg from ZeroTier posted something that makes a lot of sense. Changing the name of the interface; more specifically removing the “zt” from the interface will have some very negative effects. He eloquently explained… Read More

Attempt to resolve the connectivity problem. If you can restore connectivity, isolated nodes rejoin the cluster automatically and the Active node starts serving client requests. If you cannot resolve the connectivity problem, you have to log in to Active node’s console directly. Power off and delete the Passive node and the Witness node virtual machines.… Read More

For almost 10 years now, this website is the holy grail for free & open source for new Network Simulators. Brian Linkletter has dedicated much time and reviewed each one. His thoroughness in his descriptions and reviews is a priceless time saver. Easily find the network simulator that will best suit your needs. https://www.brianlinkletter.com/ Kudos… Read More

Share Code from any Device Trinket lets you run and write code in any browser, on any device. Trinkets work instantly, with no need to log in, download plugins, or install software. Easily share or embed the code with your changes when you’re done.… Read More

CLOUDRON is a platform that makes it easy to run and maintain web apps on your server. Save $30 with this Referral Code: 61ea681e4f5547a5 https://www.cloudron.io/ cloudron.io This software automates your domains dns when creating sub domains. It automatically takes care of TLS and SSL certificates through Let’s encrypt’s https://letsencrypt.org API. It also connects to your… Read More