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Learning Docker: Take 1

January 25, 2021January 25, 2021 Matthew Heick Leave a comment

It was time. I’ve been waiting for enough time to learn Docker and begin to get familiar with it. I’ve heard of it, seen it in action, and thought it was the coolest thing in the world and I had to learn it. I decided to take the dive off the actual Docker ship and descend into the depths.

So, I found a YouTube video from the Docker YouTube video channel (link: https://youtu.be/iqqDU2crIEQ). Albeit it provided me some terminology and knowledge, it didn’t really tell me everything I wanted to know, like some under-the-core or how docker did the docker thing. I learned how to build, ps, port forward, docker hub, and a Dockerfile, but then they went to docker-compose and I got lost.

So, after sitting on that video and registering all the information I decided to set a goal: Load minecraft in a docker container. This shouldn’t be difficult, as it requires java, some source files, and that should be simple.

SimpleSAMLphp / quick&ez

October 26, 2020October 26, 2020 Matthew Heick Leave a comment

Background: For about 5 years at my place of work we have used a software called SimpleSAMLphp to help offer identity solutions to TVE (TV Everywhere) customers. In essence I have been one of a team of 20th century cable people.

This software, in it’s current version has been heavily customized to offer quick deployment solutions for new customers. All I can say is that it’s awesome running an Identity Stack with 50+ IdPs and 5000+ SPs.

I decided to see how quick I could set up a SAML SP -> IdP relationship between two Centos 7 Virtual Computers:

IMAP-magic, or iMapic?…yes?…no?….

May 5, 2018May 5, 2018 Matthew Heick Leave a comment

I was given an opportunity to setup an email system for a friend that is similar to mine, so I figured I’d document this a bit better than what i’ve been documenting before.

As a primer, this is how we use sendmail, dovecot, and php to get email at a host and have it automatically move messages between email inboxes. Fairly easy 🙂

This should be a bit better than my previous partial writeups, specifically email.heick.email, sendmail & dovecot, how do you work…, and Dovecot IMAP (part 1).

Home Linux File Server with Software RAID and iSCSI (9/10)

January 25, 2018January 25, 2018 Matthew Heick Leave a comment

Continuation from Home Linux File Server

Challenges 9: Reinstall Core Operating system, configure it up, and mount and use /md.

The scenario is simple: We didn’t mirror our boot partition, so now we have to reinstall the operating system and make sure we can preserve everything we need to keep business consistency.

Home Linux File Server with Software RAID and iSCSI (6+7+8/10)

January 25, 2018January 25, 2018 Matthew Heick Leave a comment

Continuation from Home Linux File Server

Challenges 6, 7, and 8: Break the RAID, again, Verify that we can still create/make files, and Rebuild the RAID with the Spare.

This is the crux of all of this. We need to be able to know that when a physical drive/volume fails that iSCSI won’t drop anything, that the RAID5 will still operate seamlessly in degraded mode, and that we can have the spare from our “Previously RMA’d drive” scenario take the place of the dead drive.