Category Archives: Uncategorized

Yihaa – Rancher with Kubernetes

Starting today, my favourite conatiner orchestration Rancher now also supports Kubernetes across all host instances, thus creating a real elastic service environment on top of docker.

It’s realy great to see how kubernetes automatically scales across all available instances and re-spawns processes after upgrades or migrates services on reboots of host instances.

The kuberetes app catalog isn’t working at the moment.

iOS and Android application code audit

Playing with Android Studio and iPhone simulator this week, to get an application ready for source code review without having to release the code itself.

As usual the code within android is a bit messy, whilst iOS code is absolutely clean and easy to read. What I expected.

Running the android emulator without Intel HAXM acceleration is horribly slow.
No problems an absolute comfort on iOS with Xcode on the other side. (admitted that iOS code is being compiled to native x86, so this is quite an unfair comparison)

OpenStack Juno – DevStack

Spent a lot of time stacking and unstacking a single OpenStack installation on my Mac using the DevStack scripts.

It really looks like shuting down and restarting a whole OpenStack installation is almost impossible. Nice if you have enough machines, datacenters and/or even enough co-locations to survive any planned or unplanned power outages.

Very frustrating, waiting for ages to create all the openstack node components just to see a bunch of red lines running across my screen.
Although one can easily switch log consoles to access all the different processes it’s really scary to keep up with the logging speed whenever something wrong happens.
And fixing things by hand will always be destroyed after unstacking again.

As much as I like OpenStack, or even I do like DevStack for small short notice tests, having a production environment running on OpenStack seems so not-ready-for-production to me.

Yihaa – Rancher

I’m so amazed. Discovered Rancher today, a fully GUI enabled containerized platform to orchestrate other docker instances within docker masters on different hosts.

Although the GUI needs more work, the generel idea of having a docker based orchestration frontend, which by the way can be updated/replaced on the fly without disrupting
the other containers services.

Other worker docker nodes can be easily attached to the master orchestrator, as well as almost any known cloud technology/distributor private/non-private/public.

Definitely worth a look:

Evaluating SELKS – Suricata Elasticsearch Logstash Kibana Scirius


Open Source

Still thinking about mirroring my DSL traffic to Suricata.
But I might need some redesign first, as my fritzbox is serving Wifi users directly without the chance to mirror the traffic before it goes to the internal DSL modem.

Need to split up the modem/routing from the routing/wifi part.
Draytek Vigor in front of the fritzbox would be an idea, or lose the fritzbox completely, as vigor could do all by itself I guess.
Otherwise sending all the traffic to pfSense would also be nice…
…I can’t decide right now.

So much options so less time.