I had an issue with the Docker Swarm subnet automatically generated when I do:
$docker swarm init
Basically it was choosing the subnet my VPN connection was using to assign an IP to my machine on the internal network. Obviously this wreaked havoc on me being able to connect to the docker hosts I was working with in our lab.
I decided it would be worth it to create the docker_gwbridge network and assign the CIDR subnet for the network that would not overlap with the VPN.
$docker network create –subnet 192.168.249.0/24 docker_gwbridge
I did this before I created the swarm cluster. So far everything is working fine in the lab and I am able to SSH to the Docker Host and connect to the services I am testing on those machines. There may be other issues and I will report back as I find them.
Don’t’ you just love double titles?
For many years I have been an infrastructure guy. I really liked how the cables, and processors and Memory and blinking lights worked. Applications were often the necessary evil tolerated so that I can play with cool technology. During my own journey toward learning about the cloud it becomes increasingly important to consider the function of the application. Six years ago me would totally punch me in the face right now. Traitor. J
1 – Don’t get your App messed up in my resource buckets of awesomeness
So the reality check to the Infrastructure geek in me is this: The application teams really think of what you do as the network. That is why when anything is ever wrong it is always “the network’s” fault. What we love to do is getting abstracted more and more. I will still contend that is very important and very hard to do. Whether you are building reference architectures or deploying a converged infrastructure appliance almost no one but us cares. They just want the data to do their jobs. So while we have really great discussions about speeds and feeds, the guy in the picture below just wants the app. From the hypervisor down we need to design with the application in mind or we will risk becoming like that goth dude locked in the server room on IT Crowd.
2 Honey badger don’t care about FCoE
My next post will get into what I have been researching regarding what is out there and hopefully help us (infra. peeps) understand our App/Dev brothers better.
You are probably an Infrastructure person if:
- You read this blog.
- You work mainly with Virtualization
- Storage Admin
- Network Admin
- You like to make fun of DBA’s