book

Linux: Powerful Server Administration

Name: Linux: Powerful Server Administration
ISBN: 9781788293778

by Uday Sawant, Oliver Pelz, Jonathan Hobson, William Leemans

April 2017

Intermediate to advanced

995 pages

22h 34m

English

Packt Publishing

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Linux: Powerful Server Administration
Table of Contents
Linux: Powerful Server Administration
Linux: Powerful Server Administration
Credits
Preface
What this learning path covers
What you need for this learning path
Who this learning path is for
Reader feedback
Customer support
Downloading the example codeErrataPiracyQuestions
1. Module 1

1. Managing Users and Groups
Introduction
Creating a user account
Getting readyHow to do it…How it works…There's more…See also
Creating user accounts in batch mode
Getting readyHow to do it...How it works…
Creating a group
Getting readyHow to do it...How it works…There's more…See also
Adding group members
Getting readyHow to do it…How it works…There's more…
Deleting a user account
Getting readyHow to do it...How it works…There's more…See also
Managing file permissions
Getting readyHow to do it…How it works…There's more…
Getting root privileges with sudo
Getting readyHow to do it...How it works…There's more…Setting password less sudoOther uses of sudoSee also
Setting resource limits with limits.conf
Getting readyHow to do it...How it works…There's more…
Setting up public key authentication
Getting readyHow to do it...How it works…Working of SSH authenticationThere's more…Troubleshooting SSH connectionsSSH tools for the Windows platformSee also
Securing user accounts
How to do it...How it works…
2. Networking
Introduction
Connecting to a network with a static IP
Getting readyHow to do it…How it works…There's more…IPv6 configurationSee also
Installing the DHCP server
Getting readyHow to do it…How it works…There's more…
Installing the DNS server
Getting readyHow to do it…How it works…See also
Hiding behind the proxy with squid
Getting readyHow to do it…How it works…There's more…Access control listSet cache refresh rulesSarg – tool to analyze squid logsSquid guardSee also
Being on time with NTP
How to do it…How it works…There's more…See also
Discussing load balancing with HAProxy
Getting readyHow to do it…How it works…There's more …See also
Tuning the TCP stack
Getting ready…How to do it…How it works…See also
Troubleshooting network connectivity
Getting readyHow to do it…There's more…
Securing remote access with OpenVPN
Getting ready…How to do it…How it works…There's more…
Securing a network with uncomplicated firewall
Getting readyHow to do it…There's more…See also
Securing against brute force attacks
Getting readyHow to do it…How it works…There's more…
Discussing Ubuntu security best practices
Getting readyHow to do it…How it works…See also
3. Working with Web Servers
Introduction
Installing and configuring the Apache web server
Getting readyHow to do it…How it works…There's more…HTTP version 2 supportSee also
Serving dynamic contents with PHP
Getting readyHow to do it…How it works…PHP settingsThere's more…Installing the LAMP stackUpgrading PHP under Ubuntu 14
Hosting multiple websites with a virtual domain
Getting readyHow to do it…How it works…See also
Securing web traffic with HTTPS
Getting readyHow to do it…How it works…There's more…See also
Installing Nginx with PHP_FPM
Getting readyHow to do it…How it works…There's more…See also
Setting Nginx as a reverse proxy
Getting readyHow to do it…How it works…There's more…HAProxy and VarnishSee also
Load balancing with Nginx
Getting readyHow to do it…How it works…There's more…See also
Setting HTTPs on Nginx
Getting readyHow to do it…How it works…See also
Benchmarking and performance tuning of Apache
Getting readyHow to do it…There's more…See also
Securing the web server
Getting readyHow to do it…How it works…See also
Troubleshooting the web server
Getting readyHow to do it…Web server not accessibleVirtual host not accessibleAccess denied or forbidden errorsApache downloads .php files
4. Working with Mail Servers
Introduction
Sending e-mails with Postfix
Getting readyHow to do it…How it works…See also
Enabling IMAP and POP3 with Dovecot
Getting readyHow to do it…How it works…See also
Adding e-mail accounts
Getting readyHow to do it…How it works…There's more…Web console for virtual mailbox administrationSee also
Mail filtering with spam-assassin
Getting readyHow to do it…How it works…There's more…See also
Troubleshooting the mail server
Getting readyHow to do it…See also
Installing the Zimbra mail server
Getting readyHow to do it…How it works…There's more…See also
5. Handling Databases
Introduction
Installing relational databases with MySQL
Getting readyHow to do it…How it works…There’s more…Securing MySQL installationSee also
Storing and retrieving data with MySQL
Getting readyHow to do it…How it works…
Importing and exporting bulk data
How to do it…See also
Adding users and assigning access rights
Getting readyHow to do it…How it works…There’s more…Removing user accountsSetting resource limitsSee also
Installing web access for MySQL
Getting readyHow to do it…How it works…There’s more…See also
Setting backups
Getting readyHow to do it…How it works…See also
Optimizing MySQL performance – queries
Getting readyHow to do it…How it works…There’s more…Sharding MySQLSee also
Optimizing MySQL performance – configuration
Getting readyHow to do it…How it works…There’s more…Percona configuration wizardMySQL table compressionSee also
Creating MySQL replicas for scaling and high availability
Getting readyHow to do it…How it works…There’s more…See also
Troubleshooting MySQL
Getting readyHow to do it…See also
Installing MongoDB
Getting readyHow to do it…How it works…See also
Storing and retrieving data with MongoDB
Getting readyHow to do it…How it works…There’s more…See also
6. Network Storage
Introduction
Installing the Samba server
Getting readyHow to do it…How it works…There's more…Tools for personal file sharingSee also
Adding users to the Samba server
Getting readyHow to do it…How it works…There's more…See also
Installing the secure FTP server
Getting readyHow to do it…How it works…There's more…See also
Synchronizing files with Rsync
How to do it…How it works…There's more…See also
Performance tuning the Samba server
Getting readyHow to do it…How it works…
Troubleshooting the Samba server
How to do it…Checking network connectivityChecking the Samba serviceChecking Samba logsChecking Samba configurationSee also
Installing the Network File System
Getting readyHow to do it…How it works…There's more…See also
7. Cloud Computing
Introduction
Creating virtual machine with KVM
Getting readyHow to do it…How it works…There's more…See also
Managing virtual machines with virsh
Getting readyHow to do it…How it works…There's more…Easy cloud images with uvtoolSee also
Setting up your own cloud with OpenStack
Getting readyHow to do it…How it works…There's more…See also
Adding a cloud image to OpenStack
Getting readyHow to do it…How it works…There's more…See also
Launching a virtual instance with OpenStack
Getting readyHow to do it…How it works…There's more…See also
Installing Juju a service orchestration framework
Getting readyHow to do it…How it works…There's more…See also
Managing services with Juju
Getting readyHow to do it…How it works…There's more…See also
8. Working with Containers
Introduction
Installing LXD, the Linux container daemon
Getting readyHow to do it…How it works…There's more…See also
Deploying your first container with LXD
Getting readyHow to do it…How it works…There's more…See also
Managing LXD containers
Getting ready…How to do it…There's more…See also
Managing LXD containers – advanced options
How to do it…How it works…
Setting resource limits on LXD containers
How to do it…How it works…There's more…See also
Networking with LXD
Getting readyHow to do it…How it works…There's more…See also
Installing Docker
Getting readyHow to do it…How it works…There's more…See also
Starting and managing Docker containers
Getting readyHow to do it…How it works…There's more…See also
Creating images with a Dockerfile
Getting readyHow to do it…How it works…There's more…See also
Understanding Docker volumes
Getting readyHow to do it…How it works…See also
Deploying WordPress using a Docker network
How to do it…How it works…There's more…See also
Monitoring Docker containers
How to do it…How it works…There's more…See also
Securing Docker containers
How to do it…See also
9. Streaming with Ampache
Introduction
Installing the Ampache server
Getting readyHow to do it…How it works…There's more…See also
Uploading contents and creating catalogs
Getting readyHow to do it…How it works…
Setting on-the-fly transcoding
Getting readyHow to do it…
Enabling API access for remote streaming
Getting readyHow to do it…How it works…
Streaming music with Ampache
Getting readyHow to do it…
10. Communication Server with XMPP
Introduction
Installing Ejabberd
Getting readyHow to do it…How it works…See also
Creating users and connecting with the XMPP client
Getting readyHow to do it…How it works…There's more…See also
Configuring the Ejabberd installation
Getting readyHow to do it…How it works…There's more…See also
Creating web client with Strophe.js
Getting readyHow to do it…How it works…There's more…See also
Enabling group chat
Getting readyHow to do it…How it works…There's more…See also
Chat server with Node.js
Getting readyHow to do it…How it works…There's more…See also
11. Git Hosting
Introduction
Installing Git
Getting readyHow to do it…How it works…There's more…See also
Creating a local repository with Git CLI
Getting ready How to do it…How it works…There's more…See also
Storing file revisions with Git commit
Getting readyHow to do it…How it works…There's more…
Synchronizing the repository with a remote server
Getting readyHow to do it…How it works…There's more…GitHub pagesSee also
Receiving updates with Git pull
Getting readyHow to do it…How it works…See also
Creating repository clones
Getting readyHow to do it…How it works…See also
Installing GitLab, your own Git hosting
Getting readyHow to do it…How it works…There's more…See also
Adding users to the GitLab server
Getting readyHow to do it…
Creating a repository with GitLab
Getting readyHow to do it…
Automating common tasks with Git hooks
Getting readyHow to do it…How it works…See also
12. Collaboration Tools
Introduction
Installing the VNC server
Getting readyHow to do it…How it works…See also
Installing Hackpad, a collaborative document editor
Getting readyHow to do it…How it works…There's moreUsing Hackpad with DockerSee also
Installing Mattermost – a self-hosted slack alternative
Getting readyHow to do it…How it works…There's more …See also
Installing OwnCloud, self-hosted cloud storage
Getting readyHow to do it…How it works…See also
13. Performance Monitoring
Introduction
Monitoring the CPU
Getting readyHow to do it…How it works…There's more…See also
Monitoring memory and swap
Getting readyHow to do it…How it works…There's more…See also
Monitoring the network
Getting readyHow to do it…How it works…There's more…
Monitoring storage
Getting readyHow to do it…
Setting performance benchmarks
Getting readyHow to do it…There's more…Graphing toolsMore optionsSee also
14. Centralized Authentication Service
Introduction
Installing OpenLDAP
Getting readyHow to do it…How it works…See also
Installing phpLDAPadmin
Getting readyHow to do it…How it works…There's more…See also
Ubuntu server logins with LDAP
Getting readyHow to do it…How it works…See also
Authenticating Ejabberd users with LDAP
Getting readyHow to do it…How it works…See also
2. Module 2
1. Installing CentOS
Introduction
Downloading CentOS and confirming the checksum on Windows or OS X
Getting readyHow to do it...How it works…
Creating USB installation media on Windows or OS X
Getting readyHow to do it...How it works...
Performing an installation of CentOS using the graphical installer
Getting readyHow to do it...How it works…
Running a netinstall over HTTP
Getting readyHow to do it...How it works...
Installing CentOS 7 using a kickstart file
Getting readyHow to do it...How it works...
Getting started and customising the boot loader
Getting readyHow to do it...How it works...
Troubleshooting the system in rescue mode
Getting readyHow to do it...Reaching rescue modeAccessing the filesystemAccessing the filesystemRe-install the CentOS boot loaderHow it works...
Updating the installation and enhancing the minimal install with additional administration and development tools
Getting readyHow to do it...How it works...
2. Configuring the System
Introduction
Navigating text files with less
Getting readyHow to do it...How it works...
Introduction to Vim
Getting readyHow to do it...How it works...
Speaking the right language
Getting readyHow to do it...How it works...There's more…
Synchronizing the system clock with NTP and the chrony suite
Getting readyHow to do it...How it works...There's more...
Setting your hostname and resolving the network
Getting readyHow to do it...How it works...There's more...
Building a static network connection
Getting readyHow to do it...How it works...
Becoming a superuser
Getting readyHow to do it...How it works...
Customizing your system banners and messages
Getting readyHow to do it...How it works...There's more...
Priming the kernel
Getting readyHow to do it...How it works...There's more...
3. Managing the System
Introduction
Knowing and managing your background services
Getting readyHow to do it...How it works...There's more...
Troubleshooting background services
Getting readyHow to do it...How it works...
Tracking system resources with journald
Getting readyHow to do it...How it works...
Configuring journald to make it persistent
Getting readyHow to do it...How it works...
Managing users and their groups
Getting readyHow to do it...How it works...
Scheduling tasks with cron
Getting readyHow to do it...How it works...There's more...
Synchronizing files and doing more with rsync
Getting readyHow to do it...How it works...
Maintaining backups and taking snapshots
Getting readyHow to do it...How it works...
Monitoring important server infrastructure
Getting readyHow to do it...How it works...
Taking control with GIT and Subversion
Getting readyHow to do it...How it worksThere's more...
4. Managing Packages with YUM
Introduction
Using YUM to update the system
Getting readyHow to do it...How it works...There's more...
Using YUM to search for packages
Getting readyHow to do it...How it works...There's more...
Using YUM to install packages
Getting readyHow to do it...How it works...There's more...
Using YUM to remove packages
Getting readyHow to do it...How it works...
Keeping YUM clean and tidy
Getting readyHow to do it...How it works...There's more...
Knowing your priorities
Getting readyHow to do it...How it works...
Using a third-party repository
Getting readyHow to do it...How it works...There's more...
Creating a YUM repository
Getting readyHow to do it...How it works...There's more...
Working with the RPM package manager
Getting readyHow to do it...How it works...There's more...
5. Administering the Filesystem
Introduction
Creating a virtual block device
Getting readyHow to do it...How it works...There's more...
Formatting and mounting a filesystem
Getting readyHow to do it...How it works…There's more...
Using disk quotas
Getting readyHow to do it...Enabling user and group quotasEnabling project (directory) quotasHow it works...There's more...
Maintaining a filesystem
Getting readyHow to do it...How it works...There's more...
Extending the capacity of the filesystem
Getting readyHow to do it...How it works...
6. Providing Security
Introduction
Locking down remote access and hardening SSH
Getting readyHow to do it...How it works...There's more...Changing the SSH port number of your serverLimiting SSH access by user or group
Installing and configuring fail2ban
Getting readyHow to do it...How it works...
Working with a firewall
Getting readyHow to do it...How it works...There's more...
Forging the firewall rules by example
Getting readyHow to do it...To change an existing firewalld service (ssh)To create your own new serviceHow it works...There's more...
Generating self-signed certificates
Getting readyHow to do it...How it works...There's more...
Using secure alternatives to FTP
Getting readyHow to do it...Securing your vsftpd server with SSL–FTPSSecuring your vsftpd server using SSH – SFTPHow it works...There's more...
7. Building a Network
Introduction
Printing with CUPS
Getting readyHow to do it...How it works...There's more...How to add a network printer to the CUPS serverHow to share a local printer to the CUPS server
Running a DHCP server
Getting readyHow to do it...How it works...There's more...
Using WebDAV for file sharing
Getting readyHow to do it…How it works…
Installing and configuring NFS
Getting readyHow to do it...Installing and configuring the NFS serverCreating an export shareHow it works...
Working with NFS
Getting readyHow to do it...How it works...
Securely sharing resources with Samba
Getting readyHow to do it...How it works...There's more...
8. Working with FTP
Introduction
Installing and configuring the FTP service
Getting readyHow to do it...How it works...There's more...
Working with virtual FTP users
Getting readyHow to do it...How it works...
Customizing the FTP service
Getting readyHow to do it...How it works...
Troubleshooting users and file transfers
Getting readyHow to do it...How it works...
9. Working with Domains
Introduction
Installing and configuring a caching-only nameserver
Getting readyHow to do it...Configuring a caching-only Unbound DNS serverConfiguring a forwarding only DNS serverHow it works...There's more...
Setting up an authoritative-only DNS server
Getting readyHow to do it...How it works...There's more...
Creating an integrated nameserver solution
Getting readyHow to do it...How it worksThere's more...
Populating the domain
Getting readyHow to do it...How it works…
Building a secondary (slave) DNS server
Getting readyHow to do it...Changes to the primary DNS serverChanges to the secondary DNS server(s)How it works...
10. Working with Databases
Introduction
Installing a MariaDB database server
Getting readyHow to do it...How it works...
Managing a MariaDB database
Getting readyHow to do it...How it works...There's more...Reviewing and revoking permissions or dropping a user
Allowing remote access to a MariaDB server
Getting readyHow to do it...How it works...
Installing a PostgreSQL server and managing a database
Getting readyHow to do it...How it works...There's more...
Configuring remote access to PostgreSQL
Getting readyHow to do it...How it works...
Installing phpMyAdmin and phpPgAdmin
Getting readyHow to do it...Installing and configuring phpMyAdminInstalling and configuring phpPgAdminHow it works...
11. Providing Mail Services
Introduction
Configuring a domain-wide mail service with Postfix
Getting readyHow to do it...How it works...There's more...Changing an e-mail's appearing domain nameUsing TLS- (SSL) encryption for SMTP communicationConfigure BIND to use your new mailserver
Working with Postfix
How to do it...Connecting mailx to a remote MTAReading your local mails from the mailboxHow it works...
Delivering the mail with Dovecot
Getting readyHow to do it...How it works...There's more...Setting up e-mail software
Using Fetchmail
Getting readyHow to do it...How it works...There's more...Configuring Fetchmail with gmail.com and outlook.com e-mail accountsAutomating Fetchmail
12. Providing Web Services
Introduction
Installing Apache and serving web pages
Getting readyHow to do it...How it works...
Enabling system users and building publishing directories
Getting readyHow to do it...How it works...
Implementing name-based hosting
Getting readyHow to do it...How it works...
Implementing CGI with Perl and Ruby
Getting readyHow to do it...Creating your first Perl CGI scriptCreating your first Ruby CGI scriptHow it works...There's more...
Installing, configuring, and testing PHP
Getting readyHow to do it...How to do it...
Securing Apache
Getting readyHow to do it...Configuring httpd.conf to provide better securityRemoving unneeded httpd modulesProtecting your Apache filesHow it works...
Setting up HTTPS with Secure Sockets Layer (SSL)
Getting readyHow to do it...How it works...There's more...
13. Operating System-Level Virtualization
Introduction
Installing and configuring Docker
Getting readyHow to do it...How it works...
Downloading an image and running a container
Getting readyHow to do it...How it works...There's more...Stopping and starting a containerAttaching and interacting with your container
Creating your own images from Dockerfiles and uploading to Docker Hub
Getting readyHow to do it...Uploading your image to the Docker HubHow it works...
Setting up and working with a private Docker registry
Getting readyHow to do it...Steps to be done on our Docker registry server (192.168.1.100)Steps to be done on every client needing access to our registryHow it works...
14. Working with SELinux
Introduction
Installing and configuring important SELinux tools
Getting readyHow to do it...How it works...There's more...
Working with SELinux security contexts
Getting readyHow to do it...How it works...
Working with policies
Getting readyHow to do it...How it works...There's more...
Troubleshooting SELinux
Getting readyHow to do it...How it works...
15. Monitoring IT Infrastructure
Introduction
Installing and configuring Nagios Core
Getting readyHow to do it...How it works...
Setting up NRPE on remote client hosts
Getting readyHow to do it...How it works...
Monitoring important remote system metrics
Getting readyHow to do it...How it works...
3. Module 3
1. Working with KVM Guests
Introduction
Installing and configuring a KVM
Getting readyHow to do it…Manual installationKickstart installationGraphical setup during the system's setupSee also
Configuring resources
Getting readyHow to do it…Creating storage poolsQuerying storage poolsRemoving storage poolsCreating a virtual networkRemoving networksHow it works…There's more…Local storage poolsNetworked or shared storage poolsSee also
Building guests
Getting readyHow to do it…Create a guestDeleting a guestHow it works…There's more…See also
Adding CPUs on the fly
Getting readyHow to do it…On the KVM host, perform the following steps:On the KVM guest, perform the following:
Adding RAM on the fly
Getting readyHow to do it…
Adding disks on the fly
Getting readyHow to do it…How it works…There's more…
Moving disks to another storage
Getting readyHow to do it…How it works…There's more…
Moving VMs
Getting readyHow to do it…Live native migration over the default networkLive native migration over a dedicated networkHow it works…There's more…See also
Backing up your VM metadata
How to do it…How it works…See also
2. Deploying RHEL "En Masse"
Introduction
Creating a kickstart file
Getting readyHow to do it…How it works…There's more…See also
Publishing your kickstart file using httpd
How to do it…There's more…See also
Deploying a system using PXE
Getting readyHow to do it…How it works…There's more…See also
Deploying a system using a custom boot ISO file
How to do it…How it works…
3. Configuring Your Network
Introduction
Creating a VLAN interface
Getting readyHow to do it…Creating the VLAN connection with nmcliCreating the VLAN connection with nmtuiCreating the VLAN connection with kickstartThere's more…See also
Creating a teamed interface
Getting readyHow to do it…Creating the teamed interface using nmcliCreating the teamed interface using nmtuiCreating the teamed interface with kickstartThere's more…nmclinmtuikickstartSee also
Creating a bridge
Getting readyHow to do it…Creating a bridge using nmcliCreating a bridge using nmtuiCreating a bridge with kickstartThere's more…See also
Configuring IPv4 settings
How to do it…Setting your IPv4 configuration using nmcliSetting your IPv4 configuration using nmtuiThere's more…
Configuring your DNS resolvers
How to do it…Setting your DNS resolvers using nmcliSetting your DNS resolvers using nmtuiThere's more…
Configuring static network routes
How to do it…Configuring static network routes using nmcliConfiguring network routes using nmtui
4. Configuring Your New System
Introduction
The systemd service and setting runlevels
How to do it…There's more…See also
Starting and stopping systemd services
How to do it…There's more…See also
Configuring the systemd journal for persistence
How to do it…There's more…See also
Monitoring services using journalctl
How to do it…There's more…See also
Configuring logrotate
How to do it…How it works…There's more…See also
Managing time
How to do it…Managing time through chronyManaging time through ntpdThere's more…See also
Configuring your boot environment
How to do it…How it works…There's more…See also
Configuring smtp
How to do it…There's more…See also
5. Using SELinux
Introduction
Changing file contexts
Getting readyHow to do it…Temporary context changesPersistent file context changesThere's more…See also
Configuring SELinux booleans
How to do it…Listing SELinux booleansChanging SELinux booleansThere's more…
Configuring SELinux port definitions
How to do it…There's more…
Troubleshooting SELinux
Getting readyHow to do it…audit.logsyslogausearchThere's more…See also
Creating SELinux policies
Getting readyHow to do it…How it works…There's more…See also
Applying SELinux policies
Getting readyHow to do it...How it works…There's more…See also
6. Orchestrating with Ansible
Introduction
Install Ansible
Getting readyHow to do it…Installing the latest tarballInstalling cutting edge from GitInstalling Ansible from the EPEL repositoryThere's more…
Configuring the Ansible inventory
How to do it…The static inventory fileThe dynamic inventory filehost_vars filesgroup_vars filesHow it works…There's more…See also
Creating a template for a kickstart file
Getting readyHow to do it…How it works…There's more…See also
Creating a playbook to deploy a new VM with kickstart
Getting readyHow to do it…How it works…There's more…See also
Creating a playbook to perform system configuration tasks
Getting readyHow to do it…There's more…See also
Troubleshooting Ansible
Getting readyHow to do it…How it works…There's more…
7. Puppet Configuration Management
Introduction
Installing and configuring Puppet Master
How to do it…There's more…See also
Installing and configuring the Puppet agent
How to do it…There's more…
Defining a simple module to configure time
Getting readyHow to do it…How it works...There's more...See also
Defining nodes and node grouping
How to do it…Create the configuration nodeCreate a node groupThere's more…
Deploying modules to single nodes and node groups
How to do it…Configure to deploy a module or manifest to a single clientConfigure to deploy a module or manifest to a node groupConfigure to deploy to all registered systemsDeploy to a systemThere's more…
8. Yum and Repositories
Introduction
Managing yum history
How to do it…Your yum historyInformation about a yum transaction or packageUndoing/redoing certain yum transactionsRoll back to a certain point in your transaction historyThere's more…See also
Creating a copy of an RHN repository
Getting readyHow to do it…Syncing RHN repositoriesThere's more…See also
Configuring additional repositories
Getting readyHow to do it…There's more…See also
Setting up yum to automatically update
Getting readyHow to do it…How it works…There's more…See also
Configuring logrotate for yum
How to do it…How it works…See also
Recovering from a corrupted RPM database
Getting readyHow to do it…There's more…
9. Securing RHEL 7
Introduction
Installing and configuring IPA
Getting readyHow to do it…Installing the IPA serverInstalling the IPA clientThere's more…See also
Securing the system login
How to do it…How it works…There's more…See also
Configuring privilege escalation with sudo
Getting readyHow to do it…There's more…See also
Secure the network with firewalld
How to do it…Showing the currently allowed services and ports on your systemAllowing incoming requests for NFS (v4)Allowing incoming requests on an arbitrary portThere's more…See also
Using kdump and SysRq
How to do it…Installing and configuring kdump and SysRqUsing kdump tools to analyze the dumpThere's more…See also…
Using ABRT
How to do it…Installing and configuring abrtdUsing abrt-cliThere's more…See also
Auditing the system
How to do it…Configuring a centralized syslog server to accept audit logsSome audit rulesShowing audit logs for the preceding rulesSee also
10. Monitoring and Performance Tuning
Introduction
Tuning your system's performance
How to do it…There's more…See also
Setting up PCP – Performance Co-Pilot
How to do it…The default installationThe central collectorThere's more…See also
Monitoring basic system performance
How to do it…There's more…
Monitoring CPU performance
How to do it…
Monitoring RAM performance
How to do it…
Monitoring storage performance
How to do it…
Monitoring network performance
How to do it…
Bibliography
Index

Content preview from Linux: Powerful Server Administration

Extending the capacity of the filesystem

CentOS 7 uses the Logical Volume Manager (LVM) to organize the structure and available capacity of your partitions. It is a very dynamic and flexible system that can be extended or rearranged over time, and which is essential in today's most demanding and ever-changing environments. At the moment, buzzwords such as big data or cloud computing can be heard everywhere. Since massive amounts of data get produced all the time, storage requirements and disk space have to grow at the same steady pace. In this recipe, you will learn how to work with the LVM system and how to extend your physical drives, and also how to shrink and extend the capacity of your filesystems.

Getting ready

To complete this recipe, you ...

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ISBN: 9781788293778

Cloud Computing

Data Engineering

Data Science

AI & ML

Programming Languages

Software Architecture

IT/Ops

Security

Design

Business

Soft Skills

Linux: Powerful Server Administration

by Uday Sawant, Oliver Pelz, Jonathan Hobson, William Leemans

Extending the capacity of the filesystem

Getting ready

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

More than 5,000 organizations count on O’Reilly

Julian F.

Addison B.

Amir M.

Mark W.

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