on Today I ran into this a broken swarm. I have not figured out why it would report itself as “reachability: active, status: down”. The manager But fixing the manager was somewhat easy. It would not leave the swarm, it would not respond with “up” to “systemctl restart docker” calls. The “down” status would also survive… Continue Reading Swarm manager active but down and Dockerd start: no space left on device
on Trying out Asana I found this website: Turn Asana into a Windows desktop app I wonder if this works for any website. I will play around with it a bit. *edit: This hints to a Windows way to do the same thing: Run Google Keep on the desktop in its own window
on This is just a quick repost of RUN A SHELL FROM JENKINS USING SUDO (UBUNTU) Disclaimer: This is UNSAFE and you should NEVER do it unless in a protected, shielded and non-public-accessible dev environment. This is not even safe enough for a permanent testing environment.
on Google has HSTS and some domains fall under it automatically. This makes Chrome automatically use HTTPS instead of HTTP. As I often work on local/development/testing environments in internal, protected networks HTTPS is not necessary. Yet Chrome forces me to HTTPS everytime anywas. This thread to the rescue: How to stop an automatic redirect from “http://”… Continue Reading Disabling HSTS for any domain
on This is a nifty script I found to manually test SMTP servers: Script for testing SMTP with Telnet
on To sign and encrypt emails on Thunderbird one can use PGP keys. To understand the cryptography behind it and read more about PGP, please use Google. This post will just describe the setup on Mac OSX. #1 Install Thunderbird I will let you figure out that one by yourself. Get it here. #2 Install Enigmail… Continue Reading GNUPG – Email encryption and signing – full setup on Mac OSX
on Often times I am confused by my own and other people’s thoughts. We just experienced two power outages. One might be inclined to think “In our country? Really? I could have bet we are so over power outages.” Well apparently we’re not. And the power outage killed large parts of my working quality tonight. Simply… Continue Reading Thoughts on errors in technological infrastructure and products
on Sometimes there are problems to export a website certificate that is not trusted by one of the major CAs (self-signed or development certificates for example). Usually you’d open the certificate details in Chrome, then drag and drop the image icon to any folder on your computer (for example your Desktop). Then you’d double click it and import… Continue Reading Export Website Certificate from Chrome on OSX
on When creating new docker-machine Docker nodes, one needs to add necessary root CA certificates to them in order to let them communicate with SSL protected services. The easiest, if manual, method is to copy the ca certificate (in .pem format) to /var/lib/boot2docker/certs on EVERY swarm node (if running in swarm mode).
on What the shait this has been annoying… Well, here is the bottom line: Issue Your Own Self-Signed S/MIME Certs with OpenSSL by using these two shell scripts: makeauthority.sh makecert.sh