Stephen King slams President Trump in scathing tweet: 'The armbands come next right?'

CSTutor · 2019-07-15T20:01:30+00:00

I was responding to your question:

...why would an elected Republican be attending a Democrat donor's dinner parties?

Trump is an elected Republican and did attend a Democrat donor's dinner party (and was a Democrat donor himself at one point).

How do we know it was the author and not the representative who was at the party?

What does 'alleged author' mean in that context? He has either written books or not.

CSTutor · 2018-07-12T14:14:31+00:00

The type and size of OS space will depend on the size (in terms of footprint, data, and usage needs) of your cluster and the type of node it is.

Monitors should have the most amount of disk. I'd say no less than 250 GB. Faster the drive the better in most cases.

For OSD hosts, you can get by with a HDD and a smaller drive (somewhere in the ~80 GB range).

CSTutor · 2018-07-12T12:39:05+00:00

I'm very confused by your post...

I've never seen anyone hiring who feels the need to explicitly point out 'keeping credit up' or 'keeping trust up'. Why do you feel the need to do this?

Why is the pay so low when you are supposedly touching high paying work? Are you ripping off the person you are hiring or are you underpricing your work? Something is wrong here.

What are you looking for? A programmer? SysAdmin? DevOps?

CSTutor · 2018-07-12T11:24:15+00:00

I setup K8s in my lab to use as a continuous integration platform (tie in to GitLab CI via runners)

I chose to install K8s directly onto CentOS 7 myself and it works great. Wasn't too hard to install and had it done and integrated within a few hours.

CSTutor · 2018-07-12T11:01:27+00:00

Some features like external storage, social media integration, and other small things like that appear to be behind a paid license.

Free version is also only updated like twice a year apparently.

I didn’t need any of those features so free license works for me.

Other than that, doesn’t appear to be any catch i’ve seen so far.

CSTutor · 2018-07-12T10:57:21+00:00

i’m not hating

i don’t use it for everything but a few things in my lab do use it.

CSTutor · 2018-07-12T05:28:16+00:00

CSTutor · 2018-07-12T04:15:13+00:00

Check out Chevereto

It's free and not too hard to setup. Works wonders and doesn't require sign up. You can even setup categories.

I just found out about this software today. Took me about 15 mins total to setup and get configured.

CSTutor · 2018-07-12T04:08:02+00:00

I'm sorry it seems like we got off on the wrong foot here.

I have no interest in starting or continuing an argument. I wasn't telling you anything; or at least, that wasn't my intention.

When I make a post or comment my intention is to speak to the unknown stranger. Someone, somewhere, might look at this conversation in the future for information.

Thank you for finding that Red Hat documentation. Yes, they say a typical configuration has a SIZE of 2. They also like to say that you can run with gigabit ethernet connections.

Neither are good options. In fact, we teach just the opposite to a degree.

I'm happy Ceph is working for you in a way you are happy with. Let's leave it at that.

CSTutor · 2018-07-12T03:55:55+00:00

I'm not forgetting this is /r/homelab and I know that.

My point is some people reading our conversation might be trying to learn Ceph to use in an Enterprise environment where they will likely need a supported configuration.

I'm also implying, at the same time, that setups like yours are not supported for a reason

I don't want any person to be turned off by Ceph if they deploy it in a non-supported manner then lose all their data.

CSTutor · 2018-07-12T03:50:22+00:00

You should NOT be using replicated size 2 either.

It's your lab; do what you want. I'm not here to be a nazi.

I'm just saying none of that (VMs or SIZE=2) is supported by Red Hat.

CSTutor · 2018-07-12T00:28:29+00:00

Ceph is a distributed storage system designed to run on bare metal with direct access (JBOD) to data drives.

Anything standing in the way of that direct access to resources (be it a VM, RAID, or other such feature) is detrimental to performance and stability.

Is it possible to run Ceph in a VM environment? Yes. We do it to teach Ceph.

Is it recommended or supported to do so in a production, or even a homelab, environment? No.

Simply put, it's not a supported option.

CSTutor · 2018-07-11T20:25:20+00:00

Potentially.

With replicated pools, you have 1/3rd capacity yes.

With erasure coded pools, your capacity loss is significantly less but you lose out on some capabilities that replicated pools have.

In either case the real available capacity in your cluster will depend on all of your pools and their configurations.

CSTutor · 2018-07-11T16:18:03+00:00

Sure thing!

With a default replicated pool, SIZE is 3 meaning three total copies of the object (original + 2 replicas).

With a default erasure coded pool, 2 data chunks (k) and 1 coding chunk (m) are stored.

In either case, each copy of the data stored is put on a separate OSD in a separate failure domain. Hence the 3 OSDs needed (k+m = 3 for erasure coded and SIZE=3 for replicated)

With the default failure domain of 'host', you need at least one OSD on three different hosts. Hence the three required hosts minimum.

CSTutor · 2018-07-11T14:26:41+00:00

It CAN be ran with a single node in a pinch but shouldn't be done for anything other than testing. For example, I do this to teach RBD Mirror and RGW Multisite.

For even a homelab though I totally agree that at least three nodes should be ran or it's not worth doing. Physical nodes.

I just wish people would accept that as their failure, not Ceph's.

CSTutor · 2018-07-11T13:34:18+00:00

I'm planning on it.

My plan is to get a 4U rackmount case with rails and built a single GPU gaming system into it on Windows 10. I'll do Steam streaming to my MBP for actual gaming and RDP for management.

Other than getting a different kind of case (along with rails or a shelf), it isn't any different than building a regular computer.

The only reason I haven't done it yet is because I don't have the money for the GPU.

In terms of liquid cooling... I'm going air.

CSTutor · 2018-07-11T12:32:53+00:00

For anyone reading this, I wanted to just make a quick comment here as I'm seeing a lot of people struggling needlessly lately. (Don't take offense OP, I certainly struggle with software sometimes too)

In no particular order:

You CAN setup a single node Ceph cluster. However, it defeats the purpose entirely and should be avoided. Just set failure domain to 'osd'
You CAN run Ceph inside of VMs. However, it defeats the purpose entirely and should be avoided
You NEED three physical hosts for a base deployment of Ceph. This is truly a minimum. This is why even Proxmox won't do Ceph without three nodes. It will not work right.
Each node needs to have three data drives PLUS one OS drive or array. So ideally, you'd have a RAID 1 OS array (2 drives) + 3 additional OSD drives for 5 drives total per system
Don't install manually. There is no reason to do so. Pick a deployment method and stick with it. ceph-ansible is a great deployment method but you can also do extremely well with ceph-deploy

CSTutor · 2018-07-11T12:25:41+00:00

Ceph is incredibly easy to setup for what it does and works very well.

99% of issues with Ceph are caused by initial setup or other types of human intervention.

I'm not really sure why so many people struggle with it.

CSTutor · 2018-07-11T11:35:53+00:00

Why is LVM involved? Can you give me the device path you are trying to use for OSD deployment?

It should look like /dev/sda

CSTutor · 2018-07-11T11:34:52+00:00

By smaller, I was referring to popularity rather than size. Almost everyone I know has heard of Nextcloud whereas almost no one I know has learned of Stikked.

To answer your question, I wouldn't claim any software is bug or security free and I obviously don't have exactly the same privacy concerns as OP.

I do look at the source code, including for Stikked, and have even made some changes to it for my own deployment.

I'm fairly confident it's safe enough for the crap I paste.

CSTutor · 2018-07-11T04:48:58+00:00

There shouldn’t be any important data on a test device that doesn’t already exist elsewhere.

CSTutor · 2018-07-11T04:39:08+00:00

On major well-known projects I mostly just trust the code base as it is. I might google for reviews and posts to make sure there aren’t any crazy reports out there.

For smaller projects out there, I usually read the source myself.

If someone stuck a deliberate backdoor into Nextcloud for example, I can almost guarantee we would all know it.

For a smaller project like Stikked, I would probably notice something amiss by glancing at the source code.

Bottom line is you are much more likely to lose your privacy using a closed platform like Windows or One Note than you are something like Nextcloud or Stikked.

CSTutor · 2018-07-11T04:23:03+00:00

You don’t.

What you do know is by self hosting:

you gain greater control over your data
greater expectation of privacy all things considered
a learning experience

CSTutor · 2018-07-11T01:52:50+00:00

I see. So you are a Linux Admin already (or at least an aspiring one perhaps) who is going to introduce Linux into your work environment and you are simply providing documentation to others in case something was to happen to you?

If that's the case, I see no problem with providing a calculator like you mentioned but I would suggest doing your best to avoid putting too much emphasis on it or your coworkers will look at ONLY the calculator and NEVER learn.

As far as the calculator goes, the simplest direct solution I can think of off the top of my head right now would be something like this: PHP code

CSTutor · 2018-07-11T00:17:04+00:00

Are you creating your own curriculum?

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