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Instructor: In the last section,

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we created our User Schema,

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we created a model out of it

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and then we exported that model.

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Keep in mind that this is all working

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with Mongoose right now, and we haven't touched anything

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or even installed MongoDB,

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which means we don't really have any database yet whatsoever

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even though we've got our Schema right here.

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So let's spend some time in this section

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to actually wire up MongoDB and get it installed.

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Installing MongoDB is largely platform specific,

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so I am running OSX.

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Of course, if you're running Windows or Linux,

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the installation is gonna be just a little bit different,

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but let's walk through the process a little bit

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and I'll tell you where you should be branching off.

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I'm gonna open up my browser

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to pull up some installation directions.

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In a new tab, I'll just search for MongoDB,

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the first result is gonna be mongodb.org, go there,

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and at the top of the page, find the DOCs section

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and then we're almost there, on the left-hand side,

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find Installation, so we'll go to Installation

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and then we'll scroll down just a little bit,

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little bit more, a little bit more,

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a little bit more until we find Tutorials.

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So these are nice walkthroughs on how to install MongoDB

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given a specific platform.

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So at this point in time, if you're running Linux

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or you're running Windows,

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feel free to follow these other sets of instructions

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and catch me in the next section, okay?

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So basically pause the video, now do installation

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and then just go to the next section.

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If you have any difficulty with installation

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I highly recommend first, if you're getting an error message

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just go ahead and do a little bit of googling

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on the error message.

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If you still can't solve it, feel free to drop me an email

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and we'll try to work through it.

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So at this point in time, I'm gonna continue forward

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with the directions for installing on OSX.

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So I'm gonna click on this link,

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we'll scroll down a little bit,

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scroll down, scroll down, scroll down

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and here we go.

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So we have step number one,

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which is to update Homebrew's Package database.

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So Homebrew is a package manager that gets included

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with OSX by default.

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Over in my command line, I've already ran brew update,

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so I'm not...

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It takes a little bit to get through,

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so I just did it ahead of time,

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but I highly recommend you run brew update at this time.

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Once brew update has ran successfully,

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we'll go onto the next step, which is brew install mongodb.

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So I'll do brew install mongodb.

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Now I've already downloaded the package ahead of time,

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so it almost instantly installs.

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Next, we need to do a little bit of setup from MongoDB.

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I'm gonna keep scrolling down,

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we're gonna pass the Install Community Edition Manually.

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Keep going, keep going,

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keep going, keep going until you find, Run MongoDB.

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So the first thing we need to do here,

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is create the data directory.

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So by default, Mongo needs a place to actually save the data

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that it collects

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and by default it does so in this data/db directory.

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So this directory does not exist by default

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and Mongo will not create it for us,

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so we need to actually create it.

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Inside of my command line,

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we will do just like the line says,

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mkdir-p-data or /data/db.

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And if you get an error there, no problem,

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you might have gotten something that says like,

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permission denied, blah, blah, blah.

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You can just run sudo mkdir-p /data/db like so.

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Once that's done, we need to actually go ahead

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and set some permissions on this directory.

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So unfortunately this part

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is where it gets a little bit messy.

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(chuckles)

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So this directory that we just created

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requires special permissions to access.

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And so if we go over here,

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I don't think this page actually has the directions

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that's fine.

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To take over control of that directory,

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basically, we need to take over ownership of the directory

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we just created.

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So here's what we're going to do.

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We're gonna do a little bit of fancy command line work.

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Well, it's not that fancy, but let's just give it a shot.

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So I'm gonna write sudo we'll change ownership-R

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$USER/data/db, like so.

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So basically what this command right here does,

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is it just takes ownership of the directory we just created.

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I get prompted for my password, no problem,

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and boom, there we go.

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So now the very last step is to actually start MongoDB up.

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To start up MongoDB, we just run Mongod, no b here, just d,

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and there we go.

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So you should see some messages on here like up at the top,

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MongoDB starting, we should see initializing full-time,

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blah, blah, blah

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and then waiting for connections on port so and so.

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One thing to keep in mind is that by default,

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if you wanna use Mongo you have to run that Mongo D command.

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So let's say I go and restart my laptop now,

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this process and this window would end,

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which means Mongo would no longer be running.

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So every time they wanna make use of Mongo,

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I need to run that mongod command.

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If you don't like that,

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if you want Mongo to just always run in the background

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by default, when we did the Homebrew Install,

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there was actually some directions right here

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on how to get MongoDB started at login.

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So again, I like running it myself,

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it's totally up to you if you wanna run it at login.

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I really like logging it myself

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because I can see any error messages that pop up

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or anything like that.

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I can also see connections

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as they're created to the MongoDB instance.

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Okay, so this is great, we've got our server running,

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let's go ahead and continue in the next section.

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I'll see you there.