If you are doing experiments with IPA where you install and reinstall IPA servers, you may notice SSL certificate errors when connecting to an IPA server using Firefox. The reason is that always the same Organization and serial is used when the CA cert is created. Normal users are usually only affected when using the ….Read More
Year: 2015
Updating Fedora to version 23 – how to workaround some issues
After upgrading two machines from Fedora 22 to 23 I stumbled upon some severe issues. Most of them are easy to solve. This weekend I’ve found some time to upgrade my headless router and one of my workstations. Unfortunately is did not went that smooth like the past few upgrades. No initrd created and grub ….Read More
Identity Management und 2FA mit (Free)IPA @Chemnitzer Linuxtage 2015
My first post in German, publishing the Slide Deck (in German) for my presentation about IPA and 2FA held at Chemnitzer Linux days 2015. Mein erster Post in Deutsch. Hier die Slides von meinem Vortrag an den Chemnitzer Linux Tagen 2015. Abstract: IPA ist ein Identity Management System für Linux und Unix, das stetig an ….Read More
2FA with (Free) IPA. The good, the bad and the ugly
Two factor authentication (2FA) is more and more emerging which is good to enhance security. Since the release of IPA4 it comes with 2FA included. Over time I made a lot of experiments and experience I wanted to share with you. Its is easy to set up and maintain as long as you use it ….Read More
Migrating legacy servers to FreeIPA authentication using ID-views
ID-Views are a new feature of FreeIPA4 which allows you to map UID/GID user/group names to another. This is a very handy solution when migrating legacy servers. There are legacy servers in the field with a lot of history. They have been migrated from one operating system to another since the last decade(s). It is ….Read More
Building a virtual CEPH storage cluster
This post will guide you trough the procedure to build up a testbed on RHEL7 for a complete CEPH cluster. At the end you will have an admin server, one monitoring node and three storage nodes. CEPH is a object and block storage mostly used for virtual machine images and bulk BLOBS such as video- ….Read More
Using IPA to provide automount maps for NFSv4 home directories
Since the invention of NFSv4, automount NFS home directories is secure. Since the invention of IPA, its easier to set up and maintain. This article guides you trough the steps needed to set it up. The procedures have been tested on RHEL7.1 for the IPA servers, RHEL6.6 and 7.1 as clients but should work on ….Read More
hostapd can not find the wlan interface but interface is ready
Have you ever got an error when using hostapd complaining a network interface not be found but its actually there and ready? You probably have a space at the end of the line “interface”. Hostapd does not work when having a space in that line (and probably in other lines as well) in /etc/hostapd/hostapd.conf. ap:/etc/hostapd# ….Read More