Ubuntu Server Cookbook

Book Image

Ubuntu Server Cookbook

By : Uday Sawant

Book Image

Ubuntu Server Cookbook

By: Uday Sawant

Overview of this book

Ubuntu is one of the most secure operating systems and defines the highest level of security as compared other operating system. Ubuntu server is a popular Linux distribution and the first choice when deploying a Linux server. It can be used with a $35 Raspberry Pi to top-notch, thousand-dollar-per-month cloud hardware. Built with lists that there are 4 million + websites built using Ubuntu. With its easy-to-use package management tools and availability of well-known packages, we can quickly set up our own services such as web servers and database servers using Ubuntu. This book will help you develop the skills required to set up high performance and secure services with open source tools. Starting from user management and an in-depth look at networking, we then move on to cover the installation and management of web servers and database servers, as well as load balancing various services. You will quickly learn to set up your own cloud and minimize costs and efforts with application containers. Next, you will get to grips with setting up a secure real-time communication system. Finally, we’ll explore source code hosting and various collaboration tools. By the end of this book, you will be able to make the most of Ubuntu’s advanced functionalities.

Ubuntu Server Cookbook

Ubuntu Server Cookbook

Credits

About the Author

About the Author

www.PacktPub.com

www.PacktPub.com

Preface

Free Chapter

Managing Users and Groups

Managing Users and Groups

Creating a user account

Creating user accounts in batch mode

Creating a group

Adding group members

Deleting a user account

Managing file permissions

Getting root privileges with sudo

Setting resource limits with limits.conf

Setting up public key authentication

Securing user accounts

Networking

Connecting to a network with a static IP

Installing the DHCP server

Installing the DNS server

Hiding behind the proxy with squid

Being on time with NTP

Discussing load balancing with HAProxy

Tuning the TCP stack

Troubleshooting network connectivity

Securing remote access with OpenVPN

Securing a network with uncomplicated firewall

Securing against brute force attacks

Discussing Ubuntu security best practices

Working with Web Servers

Working with Web Servers

Installing and configuring the Apache web server

Serving dynamic contents with PHP

Hosting multiple websites with a virtual domain

Securing web traffic with HTTPS

Installing Nginx with PHP_FPM

Setting Nginx as a reverse proxy

Load balancing with Nginx

Setting HTTPs on Nginx

Benchmarking and performance tuning of Apache

Securing the web server

Troubleshooting the web server

Working with Mail Servers

Working with Mail Servers

Sending e-mails with Postfix

Enabling IMAP and POP3 with Dovecot

Adding e-mail accounts

Mail filtering with spam-assassin

Troubleshooting the mail server

Installing the Zimbra mail server

Handling Databases

Handling Databases

Installing relational databases with MySQL

Storing and retrieving data with MySQL

Importing and exporting bulk data

Adding users and assigning access rights

Installing web access for MySQL

Setting backups

Optimizing MySQL performance – queries

Optimizing MySQL performance – configuration

Creating MySQL replicas for scaling and high availability

Troubleshooting MySQL

Installing MongoDB

Storing and retrieving data with MongoDB

Network Storage

Network Storage

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

Cloud Computing

Cloud Computing

Creating virtual machine with KVM

Managing virtual machines with virsh

Setting up your own cloud with OpenStack

Adding a cloud image to OpenStack

Launching a virtual instance with OpenStack

Installing Juju a service orchestration framework

Managing services with Juju

Working with Containers

Working with Containers

Installing LXD, the Linux container daemon

Deploying your first container with LXD

Managing LXD containers

Managing LXD containers – advanced options

Setting resource limits on LXD containers

Networking with LXD

Installing Docker

Starting and managing Docker containers

Creating images with a Dockerfile

Understanding Docker volumes

Deploying WordPress using a Docker network

Monitoring Docker containers

Securing Docker containers

Streaming with Ampache

Streaming with Ampache

Installing the Ampache server

Uploading contents and creating catalogs

Setting on-the-fly transcoding

Enabling API access for remote streaming

Streaming music with Ampache

Communication Server with XMPP

Communication Server with XMPP

Installing Ejabberd

Creating users and connecting with the XMPP client

Configuring the Ejabberd installation

Creating web client with Strophe.js

Enabling group chat

Chat server with Node.js

Git Hosting

Creating a local repository with Git CLI

Storing file revisions with Git commit

Synchronizing the repository with a remote server

Receiving updates with Git pull

Creating repository clones

Installing GitLab, your own Git hosting

Adding users to the GitLab server

Creating a repository with GitLab

Automating common tasks with Git hooks

Collaboration Tools

Collaboration Tools

Installing the VNC server

Installing Hackpad, a collaborative document editor

Installing Mattermost – a self-hosted slack alternative

Installing OwnCloud, self-hosted cloud storage

Performance Monitoring

Performance Monitoring

Monitoring the CPU

Monitoring memory and swap

Monitoring the network

Monitoring storage

Setting performance benchmarks

Centralized Authentication Service

Centralized Authentication Service

Installing OpenLDAP

Installing phpLDAPadmin

Ubuntu server logins with LDAP

Authenticating Ejabberd users with LDAP

Index

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Performance tuning the Samba server

In this recipe, we will look at Samba configuration parameters in order to get optimum performance out of your Samba installation.

Getting ready

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

It is assumed that you have installed the Samba server and it is properly working.

How to do it…

Open the Samba configuration file located at /etc/samba/smb.conf:
```
$ sudo vi /etc/samba/smb.conf
```

Add or edit the following options under the global section of the configuration file:

[global]
log level = 1
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=131072 SO_SNDBUF=131072 SO_KEEPALIVE
read raw = Yes
write raw = Yes
strict locking = No
oplocks = yes
max xmit = 65535
dead time = 15
getwd cache = yes
aio read size = 16384
aio write size = 16384
use sendfile = true

Save the configuration file and restart the Samba service:
```
$ sudo service smbd restart
```

How it works…

The Samba server provides various configuration parameters. It uses TCP sockets to connect with...