Few months back I've started dabbling in the world of Python 3.6. So far it has been quite a ride even though I've had some previous programming experience. Python is quite unique language and is very easy to learn. Since I've started learning about Python, I also started searching for its real life applications and if there is any way to use this knowledge more efficiently.
Imagine you are the head sysadmin of an organization, that hold many servers. Managing the log files of each server can be quite challenging, if you are supposed to do it by logging in to each server and manually checking each log file for important events. Fortunately, rsyslog happens to have a functionality, where rsyslog can serve as a client and a servers. With this information in hand, we can now setup one centralized rsyslog server and all of our other servers can act as clients and send their logs to our centralized rsyslog server. The goals of this tutorial is to show you how to set up a rsyslog client and server and test if the configuration is working.
NGinx is a lightweight web server, that has grown in popularity in the latest years. It is one of the most popular web servers after Apache. It uses different concepts than Apache and can handle large quantities ot bandwidth if configured properly.
In this tutorial, we will build a dynamic module that is not included in the original source. This works with existing installations as well. Note, that we need to download NGinx's source and use the same parameters that have been used to compile it before. Otherwise we might get the error "module is not binary compatible".
OpenLDAP is a free, open source implementation of the Lightweight Directory Access Protocol (LDAP) developed by the OpenLDAP Project. It is released under its own BSD-style license called the OpenLDAP Public License. This tool can be used for authenticating users to Linux OpenLDAP clients connected to OpenLDAP centralized server.
Google Drive is a great platform, where you can store your files. It has a limited capacity with the free tier, but hey, if you need more space you can always buy more. Creating backups of the important data is always a good idea and is relevant in 99% of any case. I've written a small script, which will archive the contents of your website and upload it automatically to your Google Drive.
We have already installed Spacewalk server from which we can control all of our systems. In order to do that, we now need to install our client systems and register them to our Spacewalk server.
Spacewalk is an open source Linux systems management software. Spacewalk is the upstream community project, derived from Red Hat Satellite software.
Using Spacewalk, we can easily configure, manage and deploy software packaged to Linux distros such as CentOS, Red Hat, Fedora and such. It has nice web interface, that we can use to monitor the status of software updates on our servers and start update process. Spacewalk provides provisioning capabilities that enables the user to kickstart provision systems and manage and deploy configuration files. This piece of software also has virtualization capabilities to enable you to provision, control, manage, and monitor virtual KVM and Xen guests.