I am not going to tell you why you would need to flush your DNS cache (you will know if you need to). So, to flush DNS on a mac simply fire up Terminal and run the following sudo command:
Read more →If the fingerprint of your remote host changes you will see the following error message appear: There are many ways to fix this. The easiest of which is simply to delete your “known_hosts” file. This will mean you just need to accept new finger prints on all your SSH hosts. Yes, this is very lazy…
Read more →If you want to quickly test a URL for changes, then the linux Watch command couple with Curl is a really simple way to hit a URL every n seconds (I use this for blue/green deployment testing to make sure there is no downtime when cutting over):
Read more →I remember getting weird flashing on my laptop and eventually figured out my icon cache was full. So if you ever get this, try running the script below. This is obviously quite a weird/random post – hope its helpful 🙂
Read more →In technology, there is a tendency to solve a problem badly by using gross simplification, then come up with a catchy one liner and then broadcast this as doctrine or a principle. Nothing ticks more boxes in this regard, than the principle of least privileges. The ensuing enterprise scale deadlocks created by a crippling implementation […]
Read more →Getting an application knocked out with a simple SYN flood is both embarrassing and avoidable. Its also very easy to create a SYN flood and so its something you should design against. Below is the hping3 command line that I use to test my services against SYN floods. I have used quite a few mods, […]
Read more →The cloud is hot…. not just a little hot, but smokin hot!! Covid is messing with the economy, customers are battling financially, the macro economic outlook is problematic, vendor costs are high and climbing and security needs more investment every year. What on earth do we do??!! I know…. lets start a crusade – lets […]
Read more →Today I am a happy bunny!!!! Yury Tsarev (a very clever dude) did a presentation to one of the Kubernetes co-founders Tim Hockin. The demo was one of absa banks opensource projects called K8GB (a cloud native GSLB for K8s): https://www.k8gb.io/ Why do I like K8GB? Because it uses a single CRD that integrates to […]
Read more →Just popping this here as I have had this a few times. Have you ever had your desktop icons flash and if you check explorer.exe its using high CPU. If so try: Step 1. Delete the Icon Cache Save the following as a batch file on your desktop and run it as admin: Step 2. […]
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