Author Archives: admin

LDAP server with 389ds: Part 4 – Security

In part 3 we’ve looked at ACLs and how to use them to restrict privileges of directory users. Unfortunately it’s still possible to access the 389 Directory Server instance that we’ve created all the way back in part 1 anonymously (i.e. without authenticating as a directory user) which renders the ACLs somewhat pointless. So it’s time to tighten up security… Read more »

LDAP server with 389ds: Part 3 – ACLs

Now that we’ve set up an instance of the 389 Directory Server in part 1 and configured essential plugins in part 2, it’s time to take a closer look at access-control list (ACLs). After all, regular users of the directory shouldn’t be able to change data that they’re not supposed to or have universal read access in most use cases.

LDAP server with 389ds: Part 1 – Installation

The Lightweight Directory Access Protocol or LDAP for short has been around for quite a while. While more modern technologies like OpenID, OAuth or SAML are often used for authentication and authorisation purposes when it comes to applications, APIs etc. on the internet these days, LDAP is still widely used for various use cases. For same-sign on purposes it is… Read more »

Enabling ‘reserved host RAM’ on VMWare Wokstation Player

VMware’s Workstation Player checks how much swap space is available before starting up any virtual machine. If the host’s available swap space isn’t at lest 50% of the VM’s memory it spits out a warning: VMWare Workstation Player showing error message due to too little swap being available Unfortunately the GUI does not offer an option to change this behavior… Read more »

Converting a disk image to VHD for Azure

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Currently the Fedora projects provides cloud images as qcow2 and raw disk files. Microsoft’s Azure however only supports VHD files. Fortunately qemu-img can convert between those formats: Note that the subformat options fixed and force_size are required for Azure to be able to use the disk image since Azure only supports fixed sized disks.

Running Fedora 27 on Google Compute Engine

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Usually Linux distributions with a long life cycle like RHEL (or its free derivative CentOS), Debian or SLES are the way to go for virtual machines in a cloud environment. But sometimes you need to be a little bit closer to upstream. Maybe because your applications relies on newer version of some packages that are not (easily) available on distributions… Read more »

Allow blacklisted VMWare Workstation Player graphics driver

For some reason, VMWare decided to blacklist some graphics drivers for their VMware Workstation Player. That includes the Mesa DRI drivers for most Intel IGPs, which results in unbearably slow graphic performance and potentially error messages such as “Hardware graphics acceleration is not available” or “No 3D support is available from the host” when starting a virtual machine To enable… Read more »