Systemd has taken the linux world by storm. Replacing 20-ish year old init style processing for a more legitimate control plane, and replacing it with a centralized resource to handle this control. There are many things to like within it, such as the granularity of control. But there are any number of things that are … Read moreI don't agree with everything he wrote about systemd, but he isn't wrong on a fair amount of it
This is something we’ve been working on for a while … a completely clean, as baseline a distro as possible, version of our SIOS RAMdisk image using CentOS (and by extension, Red Hat … just need to point to those repositories). And its available to pull down and use as you wish from our download … Read moreFully RAMdisk booted CentOS 7.2 based SIOS image for #HPC , #bigdata , #storage etc.
While the day job builds (hyperconverged) appliances for big data analytics and storage, our partners build the tools that enable users to work easily with astounding quantities of data, and do so very rapidly, and without a great deal of code. I’ve always been amazed at the raw power in this tool. Think of a … Read moreRaw Unapologetic Firepower: kdb+ from @Kx
So we’ve been using Debian 8 as the basis of our SIOS v2 system. Debian has a number of very strong features that make it a fantastic basis for developing a platform … for one, it doesn’t have significant negative baggage/technical debt associated with poor design decisions early on in the development of the system … Read moreSystemd and non-desktop scenarios
Like that old joke about the patient going to the Doctor for a pain … Patient: Doctor, it hurts when I do this (does some action which hurts) Doctor: Don’t do it then Imagine if you will, a patient whom, after being told what is wrong, and why it hurts, and what to do about … Read moreYou can't win
Most people use squashfs which creates a read-only (immutable) boot environment. Nothing wrong with this, but this forces you to have an overlay file system if you want to write. Which complicates things … not to mention when you overwrite too much, and run out of available inodes on the overlayfs. Then your file system … Read morenew SIOS feature: compressed ram image for OS
Ok … very long story that boils down to us trying to help a customer out. I am trying to avoid the “lets just add another user to /etc/passwd” or similar such thing. And they aren’t quite ready to hook into AD or similar. So we have this issue. I want to enable their nodes … Read moreIt is 2016 … why am I fighting with LDAP authentication in linux? Why doesn't it just work?
We have an automated build process for our boot images. It is actually quite good, allowing us to easily integrate many different capabilities with it. These capabilities are usually encapsulated in various software stacks that provide specific functionality. Most of these stacks follow pretty well defined workflows. For a number of reasons, we find building … Read moreThe joys of automated tooling … or … catching changes in upstream projects workflows by errors in yours
I am trying to help people conceptualize the experience. Here is a video depicting very fast, very powerful cars and their sound signatures. This is a good start. Take one of those awesome machines, and turn off half the engine. So it is literally running with 1/2 of its power turned off. Remember this. There … Read moreMassive unapologetic storage firepower part 4: On the test track with a Forte unit … vaaaaROOOOOOMMMMMMM!!!!!
We’ve got customers with very large resource machines. And software that sees all those resources and goes “gimme!!!!”. So people run. And then more people use it. And more runs. Until the resources are exhausted. And hilarity (of the bad kind) ensues. These are firedrills. I get an open ticket that “there must be something … Read moreWhen infinite resources aren't, and why software assumes they are infinite