MongoDB for Developers with Python Transcripts
Chapter: Deploying MongoDB in production (and playing it safe)
Lecture: Creating a couple of cloud servers
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To deploy our database and set up our production environment I'm going to use Digital Ocean, I've run web applications in MongoDB, in AWS, EC2,
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I've done it in Azure, and various other places I'll talk about some of those,
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and I found something like Digital Ocean really to be just such a nice service,
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simple, extremely fast, extremely affordable compared to the other options. We're going to use Digital Ocean, but what I'm going to show you
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is not specific Digital Ocean for the most part you can use any other server that lets you basically set up vms, and in a single data center.
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We're going to use this and if we come down here we'll look at the various options, we'll see that we can basically choose different machines,
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now it turns out for reasonable amounts of data I'll describe what I think but reasonable is, certainly ten dollars a month is absolutely fine,
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we've got 30 gigs of disk space on an ssd disc, we've got tons of bandwidth and I don't even know if it counts within data center bandwidth,
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1GB is not a ton a memory, but it is enough, this is really nice and cheap, the five dollar one,
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but it's going to put you up against memory limits pretty quickly, if you have lots of data, so what do I mean by a lot,
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so right now I'm running most of my websites using a shared MongoDB server, separate databases, but shared server
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and it's running on one of these ten dollar machines and it's got about six million documents in there,
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something around six million documents, and it takes about let's say 30 percent of the memory of 1GB, so about 300MB resident,
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if I had lots more than six million things, than probably I'd need to move up. Also if I wanted to run a replica set on the same machine,
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all these kinds of things, but this is probably a totally decent starting point, unless you really have quite a bit of data.
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Anyway, we'll get started with Digital Ocean. The first thing we're going to do, what we're going to do in this video, in this lecture is
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we're just going to create two servers, one that's going to be our web server that's just the thing that's going to try to access MongoDB our app
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and the one that is the deployment production server that we've kind of locked down and hardened,
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so let's switch over here for now, and we're going to go and create a droplet. I've done a tiny amount of work in advance,
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I've created a certificate that I'm going to use to ssh in, I'll show you where the step is and there's a button you can click
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and it basically says type this, put the contents here, you're good. When we come in here there's a couple of options,
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the first thing is to choose an image, so we could choose all these different versions of Ubuntu,
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I'll just take the default, I'm tempted to take the new one but it will take the long term to support one.
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If you wanted to use another distribution, you totally could, also they've got this one click apps thing that is pretty interesting
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and I could come down here and even click MongoDB but I don't want to assume that using Digital Ocean you have this button
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I want to show you how to set up a fresh Linux machine running MongoDB in the end basically.
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So I'm not going to click this, but this is a totally reasonable option to click this and it has ability to upgrade basically through apt update.
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So for this, let's go with the ten dollar one, it's charged by the hour we actually pay for this course, it's going to be quite quite low,
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I'm not going to leave it running for months at a time. We're going to do this, 10 dollars a month, standard Ubuntu,
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I don't care about block storage, I'm on the West Coast of the US, so let's pick something somewhat nearby but you see there is other data centers,
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probably you want monitoring, this allows you to go back and do a droplet and get graphs of like cpu, disk, memory, over time that's kind of cool,
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maybe private networking, but again we're not going to do that here, I have already set up the ssh key,
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so I'm going to pick this Digital Ocean course test key, which doesn't want for anything but this test bit that I'm doing right here,
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we also create a new ssh key and there's a little help button you can click, and I'll just show you how to create and store one of these here.
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Alright, so last thing we want to go over here, we got to give it a name, this Ubuntu name not the most amazing,
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we'll call it the mongo server, that seems decent right, it doesn't like this, so we'll just go like—
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so this is all looking good, we've got our ssh key we just need one of these types of things and we click go.
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I'll let this go in real time, so not sure how long it's going to take today but I'm not going to speed up this part,
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you can see this is just a real time creation here. And we're good, it says happy coding, I love it.
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Alright, so let's copy this, let's go ahead, I think my ssh is already registered if not I might have to add that, let's go,
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so we're going to go here like this, and it says you've never connected to this server, no it's brand new.
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Apparently I have not added that, so go down here, add ssh-add at the k is added to my keychain, like so, so it's added
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now if I ssh again, do this one, how about the one we're actually working with. Okay, look at that, we are connected,
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so I had generated my key but I hadn't added it to this user profile, so this is great, and it should also be somewhat concerning
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that there are 16 security updates right now, so first thing we are going to do, we're going to apt update,
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go refresh the possible updates and a real quick upgrade, and we'll be back in a minute.
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Okay, everything is done, now let's exit out real quick and just come straight back and notice, there's no more updates, but a restart is required
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in order to make this basically finalize those changes, something deep down in the guts was updated,
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so we'll just do a quick reboot and just to show you the time in here I will not speed this part up either. Usually it takes about ten seconds,
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but with that many updates it might take a little bit longer; let's be optimistic give it a shot, and we're back,
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so really quickly we updated our system, we rebooted so we've got Ubuntu 16.04.2 long term support, and it's all up to date.
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This is great, this is our Mongo server, let's do this one more time let's go and do this for here, go back to the other stuff in a minute,
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let's do this for the fake web app that we're going to have talk to this. We'll come down here and pick Ubuntu, five dollar one
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we don't need block storage, sfo 1, same data center as before that's very important for latency; go ahead and add monitoring, use this ssh key,
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and we'll call this the web server, and go— good, these are the same data center
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and we'll do the same thing, I'll ssh into here I'll do apt update, apt upgrade
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and give it a good reboot, and then we'll have two fresh up to date machines and we'll start configuring them afterwards,
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let's just double check this one, so it's alive, but make those a little bit quick, there we go,
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now it took a moment just to turn on, excellent, everything is good here let's say apt update, it says there's no packages
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but I'm not so sure, it's basically running that right now so let's come back in a second, oh look, there's a whole bunch of stuff that we got to do
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so apt upgrade and we'll do this, I'll kind of shorten the video here you've gone through this before, and we'll just let it do all the upgrades
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and then we'll come back and talk about installing MongoDB on the Mongo server.