- Details
- Lubos Rendek
- Redhat / CentOS
Objective
Our objective is to set up access to internal and remote yum repositories while some of them are behind proxy servers.Operating System and Software Versions
- Operating system: Red Hat Enterprise Linux 7.5
Requirements
Privileged access to the systemDifficulty
EASYConventions
- # - requires given linux commands to be executed with root privileges either directly as a root user or by use of
sudocommand - $ - given linux commands to be executed as a regular non-privileged user
Introduction
In a corporate environment it is common to limit Internet access - both for security and accountability. This is often accomplished by using proxy servers that enable access to the Internet after some sort of authentication, while inspect and log all traffic passing trough them. This way the company can, for example find the employee who downloaded the virus that wreak havoc within the corporate system (or at least the employee who's credentials where stolen to do so), or filter the traffic, preventing access to well-known harmful sites to protect employee equipment.- Details
- Lubos Rendek
- Redhat / CentOS
Objective
Our goal is to build rpm packages with custom content, unifying scripts across any number of systems, including versioning, deployment and undeployment.Operating System and Software Versions
- Operating system: Red Hat Enterprise Linux 7.5
- Software: rpm-build 4.11.3+
Requirements
Privileged access to the system for install, normal access for build.Difficulty
MEDIUMConventions
- # - requires given linux commands to be executed with root privileges either directly as a root user or by use of
sudocommand - $ - given linux commands to be executed as a regular non-privileged user
Introduction
One of the core feature of any Linux system is that they are built for automation. If a task may need to be executed more than one time - even with some part of it changing on next run - a sysadmin is provided with countless tools to automate it, from simpleshell scripts run by hand on demand (thus eliminating typo errors, or only save some keyboard hits) to complex scripted systems where tasks run from cron at a specified time, interacting with each other, working with the result of another script, maybe controlled by a central management system etc.- Details
- Lubos Rendek
- Redhat / CentOS
# yum group list Loaded plugins: fastestmirror There is no installed groups file. Maybe run: yum groups mark convert (see man yum) Loading mirror speeds from cached hostfile * base: centos.mirror.crucial.com.au * extras: centos.mirror.crucial.com.au * updates: centos.mirror.crucial.com.au Available environment groups: Minimal Install Compute Node Infrastructure Server File and Print Server Basic Web Server Virtualization Host Server with GUI GNOME Desktop KDE Plasma Workspaces Development and Creative Workstation Available Groups: Compatibility Libraries Console Internet Tools Development Tools Graphical Administration Tools Legacy UNIX Compatibility Scientific Support Security Tools Smart Card Support System Administration Tools System Management Done
- Details
- Lubos Rendek
- Redhat / CentOS
Objective
Our goal is to get used to the tools available to find out information about package dependencies on an RPM based system.Operating System and Software Versions
- Operating system: Red Hat Enterprise Linux 7.5
- Software: rpm 4.11, yum 3.4.3
Requirements
Privileged access to the system.Difficulty
EASYConventions
- # - requires given linux commands to be executed with root privileges either directly as a root user or by use of
sudocommand - $ - given linux commands to be executed as a regular non-privileged user
Introduction
RPM, which stands for Red Hat Package Manager, is a well-known and mature package manager used by all Red Hat flavor distributions, as well as SuSE. With RPM the packager can define relations between packages, and even with versions of packages - for example, an Apache Tomcat server needs proper Java environment present to be able to run.On the other hand, to install a Java environment, you don't need a Tomcat server - you may decide to run some different Java based application, maybe one written by yourself started by hand when needed to do it's job. In other words, the Tomcat server depends on Java.
- Details
- Lubos Rendek
- Redhat / CentOS
Objective
The objective is to set up Apache webserver with SSL/TLS support on Red Hat Linux, using the packages shipped with the distribution.Operating System and Software Versions
- Operating system: Red Hat Enterprise Linux 7.5
- Software: Apache httpd, mod_ssl
Requirements
Privileged access to the webserver.Difficulty
EASYConventions
- # - requires given linux commands to be executed with root privileges either directly as a root user or by use of
sudocommand - $ - given linux commands to be executed as a regular non-privileged user