All posts for the month November, 2017

Recently I found myself migrating, again, my cloud hosting provider.  I like to keep a complete backup of all files so that in case I miss something it’s not forever lost in the ether.

This command comes in handy to rsync everything from one host to a backup location, which I can then use to migrate to the new cloud provider. This command skips the docker device mapper along with the other non-FS files in /dev /proc and /sys. Worked for me!

rsync -av --numeric-ids --exclude='/dev' --exclude='/proc' --exclude='/sys' --exclude='/var/lib/docker/devicemapper/' --progress --inplace --rsh='ssh -p22221' /

Enabling HSTS and SSL Redirection for Tomcat 9.x

This document details how to enable HSTS and SSL redirection (by default port 80 to 443) on a Tomcat 9.x instance. This will not work on 8.x versions of Tomcat because they changed some of the keywords for some reason.

Enable HSTS

Enabling HSTS (to include maxAgeSeconds = 31536000, includeSubDomains, and preload) requires two modifications of the Tomcat’s conf/web.xml file:
1. First, to enable HSTS support, Continue Reading