Linux/unix | IT Admins Group
 

UPDATED! – D3100 Docking Station with Dell XPS 15 Laptop & Linux Mint 18.1

Submitted by: Slydder

Getting the D3100 working on our Dell XPS 15 machines using the NVIDIA proprietary drivers. If you have to ask why then this tutorial is not for you.

XPS 15 specs:

  • 7th Generation Intel(R) Core(TM) i7-7700HQ Quad Core Processor (6M cache, up to 3.8 GHz)
  • 1TB PCIe SSD
  • 32GB DDR4 2.400MHz

Also included in the order were 2 D3100 Docking stations. If you are here then you probably already know that these “Docking stations” are based on DisplayLink technology that is barely supported under Linux.

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Making Froxlor NFS mount safe

Submitted by: Slydder

As you all know I love Froxlor. Unfortunately I have problems dealing with developers at times. The Froxlor developers would seem to be no exception. Therefore, I am constantly generating patches for Froxlor but rarely submit a request.

This is another such situation. As many of you may remember, I run Froxlor in a 6 layer HA cluster stack with the HA cluster containing Froxlor in the 2nd layer in from the edge. All content and configs for Froxlor are stored on a GlusterFS HA cluster mounted using NFS.

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An introduction to LBActive

Submitted by: Slydder

I have run across applications that work good as a load balancer but fall short of being a great load balancer due to the fact that they only do passive health checks (check based on possible return code from back-end server) and do not have the ability to dynamically adjust the weight/preference of each back-end node based on an active check.

One of these is my personal favorite; Nginx.

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Getting useful metrics from GlusterFS into Grafana using Diamond!

Submitted by: Slydder

Recently one of the RedHat maintainers of GlusterFS requested that I do a quick writeup of the new Diamond collector that I wrote as a way of introducing metrics gathering for GlusterFS using Diamond to feed InfluxDB and ultimately Grafana.

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Getting the Job Done with Let’s Encrypt

Submitted by: Slydder

The Let’s Encrypt project (or movement if you wish), backed by Facebook, Cisco, Akamai, Mozilla, EFF and many more; is now in open beta. Since closed beta started I have been hearing a lot of trash talking from people that are not happy with certain aspects of the implementation and requirements.

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Fix for HA Clustering Froxlor

Submitted by: Slydder

One of the requirements of clustering web servers is that the loadbalancers in front can count on the fact that all the content nodes are on the same sheet of music. Therefore, it is not a bad idea that all content and configurations are the same. This cannot happen when the web server configuration is locked to a single node (via IP address) and cannot be used on any other node.

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Froxlor Love! ;)

Submitted by: Slydder

The situation: I have been working with Froxlor for years (since the fork from syscp) and have even contributed at times to the code base. Over the years I have constantly re-evaluated other UI’s to ensure there wasn’t a better fit for our use pattern. Important are the following features:

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Short list of must have tools

Submitted by: Slydder

Over the course of ones carrier as a System or Network Administrator one will encounter a quite a few utilities to “help” in the excution of ones work. A large majority of those tools are either flawed in logic or execution, incomplete or just generally useless. However, every once in a while a tool will surface that fits just perfectly in just about every admins toolbox. Here is a list (in alphabetical order) of some of my favorites. If you have any that should be listed just let me know.

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PHP-FPM Processor Load

Submitted by: Slydder

I run just about everything in Proxmox/OpenVZ containers. Recently I noticed after doing a fresh install of PHP-FPM that the pools for PHP-FPM were eating up a LOT of CPU time. That PHP-FPM can eat up a processor is nothing new. However, the pools were doing absolutely nothing. They were just idling there and were causing ca. 40% load on the processor.

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