Hey for all of you hand-rolling a Kubernetes / Docker cluster, I thought I’d mention a bug with Centos 7.x that is still yet to be fixed. The error is: /proc/sys/net/bridge/bridge-nf-call-iptables: No such file or directory. The fix is simple. Just execute the following command (as root). $ modprobe -v br_netfilter Problem solved. If you…
Category: Tech that doesn’t work like it should
Encryption type Matters with Deep Packet Inspection – solved
I was helping a client yesterday set up a VPN tunnel only to have it constantly disconnected. The client was located outside of the country. For the sake of avoiding throttling and saving on CPU, we were using the Blowfish cipher and it kept on getting disconnected. I found this rather strange as I’ve never…
Update 2: Programming and Database Mistakes
The biggest mistake you can make to cause problems with performance as a developer is to use joins. Inner or Outer Joins take up a lot of CPU. The transaction queries also take over 1000% time to complete in many cases. If you have to join tables, you need to revisit your DB architecture. The…
Database Backed Web Applications Advice
Here’s the scenario. You’ve got a dedicated server running windows in a server farm (generic dedicated server provider). You have mysql + asp or php app running all on the same server. Raid 1 mirroring and 2 GB of ram. You have to have windows, because your application supports it. Sound Familiar? It’s a problem…
What happened to “Human” in Humanity?
I really do need to ask this question. I appreciate my followers and yes, they’re a loyal bunch. I do need to EVERYBODY one question and everyone on the Internet. We all go about our lives. We see the homeless person at the exit ramp, on the sidewalk, etc. Granted a lot of them are…
Free Tech Support from me…
OK. I really believe in my project for helping the unemployed, so here’s what I propose. If you donate to my project and of course, get others to donate to my project, I will provide you with free tech support (my skills and advice) for a period of time. Donate: $25.00 you get 1 hour…
I guess this is a call out for help
I’m at the point where I can’t support this blog due to the traffic I’m getting. I really need some donations or something. I’m pushing about 5 GB of data a day and due to my divorce, I can’t afford to support this continually. I’m not asking for donations, although, they would help, but I…
Typing a Search Term in the Firefox Address bar stops working [Solved]
Every once in a while, while it doesn’t happen much, a piece of software breaks our browser. (OK.. It happens more than less for many people). Here’s the solution: 1. In the address bar, type about:config 2. You will receive a warning about modifying these setting could cause issues. Just accept it. 3.You will see…
A review on Alix Boards for a Firewall
I know firewalls and have definitely tested and worked with many appliances. One of the most interesting and successful appliances out there seems to be the Alix board. These boards are built on Cheap chipsets (VIA) and cheap processors (Geodes). So here’s my reaction to them. (I own 3). 1. If you’re going to use…
WordPress Users! Emergency Announcement!
I feel the need to get this out as soon as possible. If you’re running wordpress 3.3.2 I would highly suggest NOT upgrading to 3.4 yet. I did a test install of 3.4 last night and while it seemed to work, the biggest problem was it didn’t allow tagging of posts. THIS IS A BIG…