
<p>This blog shows how to set up a MongoDB database environment on the cloud, AWS EC2 with Amazon Linux.&nbsp;</p>
<h2>Pre requirement</h2>
<ul>
<li>You'll need an AWS account, if you never set up an AWS account before, go <a href="https://aws.amazon.com/free/?all-free-tier.sort-by=item.additionalFields.SortRank&amp;all-free-tier.sort-order=asc&amp;awsf.Free%20Tier%20Types=*all&amp;awsf.Free%20Tier%20Categories=*all" title="AWS Free Tier" target="_blank" rel="noopener">here</a> to create an AWS account.</li>
</ul>
<h2>Create EC2 Instance</h2>
<p>First, we'll need to set up an EC2 instance, then we'll SSH into the EC2 instance and set up the MongoDB database.</p>
<p>Create EC2 Instance with AWS Linux AMI.</p>
<p>Choose t2.micro.</p>
<p>During the setup everything as default is fine for this blog, we'll use default VPC, as long as the new EC2 can access the internet.&nbsp;</p>
<p>For the security group, we'll just open port 22, so we can SSH later to into EC2 for setup MongoDB.</p>
<h2>Setup MongoDB at EC2 AWS Linux</h2>
<p>After SSH into EC2, we'll need to create mongodb-org-4.4.repo file at location /ect/yum.repos.d.</p>
<pre class="language-markup"><code>cd /etc/yum.repos.d</code></pre>
<p>Then, let's create mongodb-org-4.4.repo file.</p>
<pre class="language-markup"><code>nano mongodb-org-4.4.repo</code></pre>
<p>&nbsp;This will open the file window, copy the following mongod repo at the file and save it.</p>
<pre class="language-markup"><code>[mongodb-org-4.4]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/amazon/2/mongodb-org/4.4/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-4.4.asc</code></pre>
<p>Now, mongod 4.4 repo is ready, you should be able to install mongodb package.</p>
<pre class="language-markup"><code>sudo yum install -y mongodb-org</code></pre>
<p>Once you see start downloading mongodb packages, that's a good sign. Once install MongoDB package is finish, you can verify by checking this folder is exist or not. If the folder exists, means MongoDB installation is done and you should be good to run MongoDB.</p>
<pre class="language-markup"><code>cd /var/lib/mongo</code></pre>
<h2>Enable MongoDB on Linux</h2>
<p>Run following command will start MongoDB process at the EC2 Instance</p>
<pre class="language-markup"><code>sudo systemctl start mongod</code></pre>
<p>Run this command will enable mongod, even after reboot the EC2</p>
<pre class="language-markup"><code>sudo systemctl enable mongod</code></pre>
<p>Now, at this point, your MongoDB on Linux Server should be ready. If you have data you can import or restore it to the MongoDB server.</p>
<h2>Create Database, Collection, and Record</h2>
<p>Type mongo then it will start MongoDB shell, now let's play around at the server to check everything works.</p>
<pre class="language-markup"><code>mongo</code></pre>
<h3>Create Database</h3>
<p>The first command will show all the databases, then trying to create a new database <strong>myDB</strong>.</p>
<pre class="language-markup"><code>show dbs
use myDB</code></pre>
<h3>Create Table and Record</h3>
<p>This command will create <strong>myUser</strong> table and insert a new record.</p>
<pre class="language-markup"><code>db.myUser.insert({name: "john"});</code></pre>
<h3>Use mongoexport&nbsp; to export data to JSON</h3>
<p>We'll use mongoexport to export the data we just add to the <strong>myUser</strong> table. By default, the mongoexport tools are not installed. You'll need to install by run following command.</p>
<pre class="language-markup"><code>sudo yum list installed mongodb-database-tools</code></pre>
<p>Now, all other tools mongodump, mongorestore, mongoimport, mongoexport, bsondump, mongostat, mongotop, mongofiles should be available to use.</p>
<p>The following command will output <strong>myUser</strong> table and generate data to myUser.json file.</p>
<pre class="language-markup"><code>mongoexport --collection=myUser --db=myDB --out=myUser.json</code></pre>
<h2>To Summarize</h2>
<p>This blog is about how to set up MongoDB on Amazon Linux and will use database tools for backup or restore data. Following are all the steps.</p>
<pre class="language-markup"><code>cd /etc/yum.repos.d

nano mongodb-org-4.4.repo

[mongodb-org-4.4]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/amazon/2/mongodb-org/4.4/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-4.4.asc

sudo yum install -y mongodb-org

sudo systemctl start mongod</code></pre>

This blog shows how to set up a MongoDB database environment on the cloud, AWS EC2 with Amazon Linux. 

How to Setup MongoDB on Amazon Linux EC2


<h1>What's forever?</h1>
<p>Forever is a npm package, it is for your node.js server side application. Look this package document.&nbsp;<a href="https://www.npmjs.org/package/forever" target="_blank">forever npm package</a>.</p>
<p>Use forever so that eventhouth you log off your machine, the node.js will still running the application for you. Without this, after you log off, your application will logged off.</p>
<p>Few very command command for running at Linux System.</p>
<h3>list all the forever running thread</h3>
<pre class="language-javascript"><code>
/# forever list
</code></pre>
<h3>stop specific forever running thread</h3>
<pre class="language-javascript"><code>
/# forever stop server.js
</code></pre>
<h3>start specific forever running thead</h3>
<p>following example is similar to node server.js</p>
<pre class="language-javascript"><code>
/# forever start server.js
</code></pre>
<p>&nbsp;</p>

Forever is an npm package, this blog shows how to use it.

How to Use Forever in Linux for Node.js


<p>delete all folder, files and sub directory.</p>
<pre class="language-javascript">rm -rf ./{your folder location}</pre>
<p>http://www.mediacollege.com/linux/command/linux-command.html</p>

Category Linux

How to Setup MongoDB on Amazon Linux EC2

How to Use Forever in Linux for Node.js

Useful Linux Command