Tyler Carr

Aug 11, 2021

Comments powered by ISSO

You can now submit comments when viewing an individual post. I wanted to add this just in case questions came up about a post, or if there were any corrections needed.

Comments are powered by a project called isso which is a self-hostable alternative to something like disqus

ISSO is running in a docker container on my main Linode instance. Because it uses a database and is not 'mission critical' and fails pretty gracefully I don't have it duplicated on mirror server(s). The system was pretty easy to set up, just a docker-compose file and a couple lines added to one of the templates in my pelican theme.

Leave a comment and tell me you're reading and we can see how this works!

posted at 00:00  ·   ·  Meta  homelab

Aug 11, 2021

Now with more availability

Even though it isn't necessary, I decided to add an additional server to my Linode fleet. This server will, among other things, serve a mirror of this site.

I figured this would be a worthwhile learning excersize, and should provide more uptime which is never a bad thing.

Now, content is stored in a repo and pulled down, 'pelicanized' and the resulting html copied over to the mirror server, more detail on this here. The two VPSs are in different Linode datacenters (US-West and US-Central) and a Cloudflare load balancer sits in front of them to proxy requests. Depending on your geographic location you should be served either out of a nearby Cloudflare cache or the VPS that is nearest to you.

I can't give you back the time you spend reading my posts... but I can at least save you a millisecond or two.

posted at 00:00  ·   ·  Meta  homelab

Aug 10, 2021

This site -- Continuous Delivery

A new category of content -- on this site

Because this site is as close as anything I work on comes to production, Ive decided that a new category is in order.

"Meta" will be a place for articles/posts directly related to this site. Im hoping to showcase some of the techniques Im using to deliver this site. This will sometimes look like a changelog, and it will sometimes just be explanation of a way I decided to go about something, or it may be something else completely.

This might also come with a more conversational tone and shorter, more frequent posts... Well see.

A little about Pelican

This site uses a python program called Pelican as a static site generator. Pelican, so far, is really great. I like that it uses tooling that Im familiar with (Python, Jinja2, Markdown) from flask and other projects. This has made things like customizing themes a lot easier. I chose Pelican after looking specifically for a static site generator using tooling I would be comfortable with, hoping that I could customize; tweak; and potentially contribute to the project I chose.

Pelican takes content written in markdown (or restructured text) and converts it into sane and well organized html, applying a theme in the process. The simple/procedural nature of the process allows for all of the content creation for this site to be done in a terminal text editor (vim right now) and for site generation and deployment to be automated.

Continuous Delivery at tyler-carr.com

Until recently, this site has lived on a single Linode VPS (migration/epansion should be the topic of a post soon). Content was served directly out of a sub-directory of where it was created, This was nice and simple and could be done over ssh mostly without issue, but with the slow (read: slooooooow) connection at my house writing content could be kind of a pain sometimes. With this site being served from more than one server now, and behind a load balancer (for learning... not out of necessity) syncronization of content became more of an issue. Im also a pretty big fan of automation and really interested in CI/CD so I decided to try to come up with a slightly better solution

What I came up with is a to put the content directory (raw markdown) in a github repository. This has a few benefits, one is that it allows me to edit copy out-of-band so to speak, I can create blog posts regardless of what my WAN connection is doing at any given point. It also will be a single source of truth for my site content. I run a development mirror of this site sometimes in order to try larger changes, and I like it to have the exact same content as the main site.

A cron job pulls the main branch of the repo, runs pelican over it and then distributes the output files to the mirror server(s). I can also just run the same script the cron job is calling if I have access to the server and dont want to wait for the job to run.

This also opens possibilities for reusing the content on other sites, and for colaboration on content creation or review before posting.

I think this setup will allow me to work on content more regularly and in more ways.