Posts made by RamblingBiped

@wirestyle22 said in What Are You Currently Reading Outside of Tech:

Loads of Murakami. By far my favorite Author.

"What I Talk About When I Talk About Running" is one of my all time favorite books!

@scottalanmiller said in What Are You Currently Reading Outside of Tech:

@RamblingBiped said in What Are You Currently Reading Outside of Tech:

Finished a re-re-read of Orwell's "1984" a little over a week ago,

A lot of people reading that again these days.

Yes, and some of the parallels to the current iteration of our "American Culture" are frightening; specifically the glorification of ignorance and anti-intellectual sentiment. I feel like the warmongering part has always been there, but the current administration is trying to push the agenda in the same fashion as the Cold War era administrations did.

Quite disturbing.

Finished a re-re-read of Orwell's "1984" a little over a week ago, and I'm currently working on Vonnegut's "Player Piano". I've got Neil Gaiman's "Norse Mythology" up next in the roster, and then I'll probably do a re-read of his "American Gods" to get it fresh in my mind before the debut of the new TV series.

How about MacBook Pro's?

http://www.apple.com/mac/compare/

Growing Logical Volumes: https://www.centos.org/docs/5/html/Cluster_Logical_Volume_Manager/lv_extend.html

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Logical_Volume_Manager_Administration/lv_extend.html

@wirestyle22 said in Attempting to increase the size of a Linux LVM Disk:

The question now is how to add the VFree space to dev/mapper/centos-root

So if you do a vgs command it should show your volume group with your newly increased capacity. When you do a lvs it should show your logical volumes (probably root and swap). You'll want to do a lvextend on your root logical volume to add the newly allocated space on the volume group to that logical volume.

The article I linked you previously should give a good example of that command. Google-fu will result in some official redhat documentation that will do a good job of walking you through it too.

Once you've extended your logical volume you'll just need to expand the filesystem to occupy the space. After that you should be all set.

@wirestyle22 Did you do an lvextend on the logical volume that you are wanting to add the extra storage space to?

@wirestyle22 I think that should work. As long as you can see the disk you should be able to use LVM's pvcreate to create a physical volume and then add that volume to the volume group that is associated with your logical volume.

pvs and pvdisplay will show pertinent information in regards to your LVM physical volumes.

vgs and vgdisplay will show volume group information.

lvs and lvdisplay will show logical volume information.

If you're wanting to add this to an already existing logical volume you don't need to do anything with the file system at first. You need to add the new physical volume to the volume group that your existing logical volume is on. Once that physical volume has been added to the volume group you can extend the logical volume and increase it's size. At that point you can grow the file system to occupy the newly allocated space.

Here's an article that should help walk you through the process if you're not familiar: http://www.tecmint.com/extend-and-reduce-lvms-in-linux/

@scottalanmiller What made you decide against it? We are getting ready to migrate to teams from HipChat.

We use Skype for Business as our primary means of communication within the company, and HipChat for inter-department communications for all things IT. We are going to be canning HipChat here in a couple of weeks when we move to Microsoft Teams

HipChat is buggy and I don't recommend it to anyone; horrible unintuitive user experience. I'm not a Skype fan either, but that decision is outside of our sphere of influence so we have to deal with it. I'm hoping Microsoft Teams offers at least the same functionality as HipChat without the bugs. If that happens I'll be happy enough.

Application architecture and the infrastructure that your application is going to be running on is a really important consideration as well. If you have an application or service that regularly sees huge deviations in use and load, you'll probably benefit more from using containers and making your workloads ephemeral.

Application isn't being used heavily during 3:00am EST? Start culling under-utilized nodes/containers and killing them as they fall off. When your still running nodes/containers start to see higher activity, respond by spinning up more nodes and containers and bringing them online to meet demand.

However, if you have a monolithic app, containers are probably not the answer.

My preference is anything that will run a modern browser alongside tmux, vim, and fish. And if I have my phone handy I couldn't really care if it runs a browser...

@stacksofplates The problem is never their code, it is always insufficient resources. More hardware(or vms/containers) is always the solution!

We try to design things small and scale upward in a distributed fashion as demand increases. If a pair of servers can't cope we spin another up and add it to the load balancer. We've got load balancers, message queues, and distributed databases in every nook and cranny.

@DustinB3403 We have four environments for each application's stage of development (DEV, QA, Stage, and Production). Each application server has a different component of a product running on it; usually a Java-based micro-service. Some products take 2 or 3 servers, and some take 30+. And each of these systems are by no means hefty. A lot of them are 1 vCPU 512M-1024M builds. The number of systems in DEV varies depending on experimentation and any new products being worked on.

We actually just started work on building out our Stage environment so we can fully implement CI/CD across all of our products. Myself and a few of my fellow Admins spun up 198 servers in a single sitting last week.

We manage everything using Chef.

I have no clue how many non-Unix boxes we have here... I avoid anything Microsoft related and make sure I give disapproving glares to all the Windows Admins in meetings. I'm sure we have thousands of MacBooks floating around in the wild and probably 2/3 that number of Windows laptops.

Probably around 700-ish CentOS 7 boxes, a few hundred CentOS 6, and 50-ish CentOS 5 boxes running some legacy applications we hope to phase out soon. I have heard mentions of some Ubuntu boxes somewhere, but not in production.

I work off of OS-X.

Also the absolutely amazing and still living Billy Zane.

@wirestyle22 Yesterday (February 24th)

I share a birthday with the late and great Mitch Hedberg and the late Steve Jobs.

Happy Birthday @scottalanmiller!

I didn't realize our birthdays were one day apart.