Ubuntu

In this recipe, we will learn how to use the Rsync utility to synchronize files between two directories or between two servers.

How to do it…

Follow these steps to synchronize files with Rsync:

Set up key-based authentication between source and destination servers. We can use password authentication as well, which is described later in this recipe.

Create a sample directory structure on the source server. You can use existing files as well:

ubuntu@src$ mkdir sampledir

In this recipe, we will learn how to install the File Transfer Protocol (FTP) server and configure it to use SSL encryption.

Getting ready

You will need access to a root account or an account with sudo privileges.

How to do it…

Follow these steps to install the secure FTP server:

Install vsftpd with the following command:

$ sudo apt-get update

$ sudo apt-get install vsftpd

After installation, we can configure vsftpd by editing /etc/vsftpd.conf.

In the previous recipe, we installed the Samba server and created a public share accessible to everyone. In this recipe, we will learn how to add authentication to the Samba server and password protect shared directories.

Getting ready

You will need access to a root account or an account with sudo privileges.

Make sure that the Samba server is installed and running.

How to do it…

Follow these steps to add users to the Samba server:

In this recipe, we will learn how to install Samba as our network storage server. Samba is a collection of open source applications that implement Server Message Block (SMB) and Common Internet File System (CIFS) protocols on Unix systems. This allows Samba to be accessible across different types of network system. Samba provides various other functionalities, such as a domain controller for the networks of Windows systems. In this recipe, we will focus on using Samba as a storage server.

Getting ready

Often we need to store a lot of data and local systems don't have enough space. Sometimes, we need to quickly share this data across multiple systems and users. Also, when you have a big network, chances are you have Linux systems as well as Windows or Mac. Centralized networked storage can help to solve these storage and sharing problems. Linux provides various options, such as Samba and NFS, to host a centralized storage server and share data across multiple computers.

In this article, we will cover the following recipes:

• Installing the Samba server
• Adding users to the Samba server
• Installing the secure FTP server
• Synchronizing files with Rsync
• Performance tuning the Samba server
• Troubleshooting the Samba server
• Installing the Network File System

In this recipe, we will look at basic CRUD operations with MongoDB. We will learn how to create databases, store, retrieve, and update stored data. This is a recipe to get started with MongoDB.

Getting ready

Make sure that you have installed and configured MongoDB. You can also use the MongoDB installation on a remote server.

How to do it…

Follow these steps to store and retrieve data with MongoDB:

Open a shell to interact with the Mongo server:

$ mongo

Until now, we have worked with the relational database server, MySQL. In this recipe, we will learn how to install and configure MongoDB, which is a not only SQL (NoSQL) document storage server.

Getting ready

You will need access to a root account or an account with sudo privileges.

How to do it…

To get the latest version of MongoDB, we need to add the MongoDB source to Ubuntu installation sources:

First, import the MongoDB GPG public key:

$ sudo apt-key adv \

In this recipe, we will look at some common problems with MySQL and learn how to solve them.

Getting ready

You will need access to a root account or an account with sudo privileges.

You will need administrative privileges on the MySQL server.

How to do it…

Follow these steps to troubleshoot MySQL:

First, check if the MySQL server is running and listening for connections on the configured port:

$ sudo service mysql status

$ sudo netstat -pltn

When your application is small, you can use a single MySQL server for all your database needs. As your application becomes popular and you get more and more requests, the database starts becoming a bottleneck for application performance. With thousands of queries per second, the database write queue gets longer and read latency increases. To solve this problem, you can use multiple replicas of the same database and separate read and write queries between them.

In this recipe, we will learn how to set up replication with the MySQL server.

Getting ready