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Troubleshooting Ubuntu Server

By : Skanda Bhargav
Book Image

Troubleshooting Ubuntu Server

By: Skanda Bhargav

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Troubleshooting Ubuntu Server
Skanda Bhargav
Sep, 2015 | 288 pages
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Table of Contents (16 chapters)
Troubleshooting Ubuntu Server
Troubleshooting Ubuntu Server
Credits
Credits
About the Author
About the Author
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Package Management
Package Management
Getting started with packages
Using dpkg for package management
Understanding the apt-get package management tool
The apt-cache tool
Package management with aptitude
Configuration and extra repositories
Automatic updates
Creating a repository mirror
Summary
2
Networking and DNS
Networking and DNS
Networking concepts
DHCP
Network sniffing with tcpdump
Binding and bonding
DNS
The primary zone file
The reverse zone file
Summary
3
Network Authentication
Network Authentication
OpenLDAP
Kerberos
Integrating LDAP with Kerberos
OpenSSH, public, and private keys – passwordless SSH
Allowing or denying users to SSH
Summary
4
Monitoring and Optimization
Monitoring and Optimization
Nagios
Puppet
ClusterSSH
Summary
5
Process Management
Process Management
The basics of process management
Signaling processes
Process priorities
Background processes
Summary
6
Shell Management, Tools, and User Management
Shell Management, Tools, and User Management
The Secure Shell server
Scheduling jobs with cron
Optimizing the shell
User management and file permissions
Summary
7
Virtualization
Virtualization
What is virtualization?
libvirt
JeOS and vmbuilder
Summary
8
OpenStack with Ubuntu
OpenStack with Ubuntu
The OpenStack architecture
The environment
The Identity service
The Image service
The Compute service
OpenStack networking
Creating initial networks
Dashboard
The Block Storage service
The Object Storage service
Summary
9
OpenStack and Ubuntu Best Practices
OpenStack and Ubuntu Best Practices
Creating rings for Object Storage
The Orchestration module
The Telemetry module
The Database service
The Data Processing service
OpenStack flashback
Best practices for Ubuntu Server
Summary
Index
Index

Dashboard

Dashboard is a web interface that helps administrators and users manage and access OpenStack services. It uses the OpenStack API for providing these services. In this chapter, we will use the Apache server for deployment.

Prerequisites

We need to take care of some prerequisites before installing the dashboard as part of our OpenStack setup. Make sure the following requirements are met:

  • OpenStack Compute is already installed and the Identity service is enabled

  • The user for Identity service has sudo access enabled

  • Python version 2.6 or 2.7 is installed, and it should support Django

Installing and configuring the dashboard

Now, we will install and configure the packages for the dashboard component.

Installing the packages

The command to install the packages is as follows:

apt-get install openstack-dashboard apache2 libapache2-mod-wsgi
memcached python-memcache

Configuring the dashboard

Edit the /etc/openstack-dashboard/local_settings.py file and make the following changes:

  1. Set the dashboard...

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