@ wrote... (1 year, 5 months ago)

Well, I finally released alkali into the wild.

Alkali is a simple database that makes it very easy to specify the on-disk format of your data. This makes it easy to use your existing data files as tables in a database. Plus the api is based off of Django models.

This is my first real project that I've released and it's a surprising amount of work. I have a new level of appreciation for all the libraries that I just blithely download and use without a second's thought.

For instance, it took about the same amount of time to write the docs as it did to write the actual code. Plus there are a lot of moving pieces to release open source software the right way.

  • use git as your source code control
  • write documentation, learn Sphinx and reStructuredText
  • when you push to github, triggers are fired
  • push release to PyPi, writing setup.py is very non-trivial, learn how that works
  • try to do some marketing on Reddit. Given my zero karma I suck at marketing and/or programming.

So yeah… please go check out alkali!

Category: tech, Tags: alkali, python
Comments: 0
@ wrote... (1 year, 5 months ago)

While trying to proxy my main nginx instance to a GitLab docker container I wasted hours and hours and hours trying to fix the following error:

fatal: unable to access 'https://gitlab.burgundywall.com/kneufeld/myproject.git/': \
SSL read: error:00000000:lib(0):func(0):reason(0), errno 54

It turns out that nginx config option ssl_session_cache is super f'n important to not screw up. I'm not totally sure what the problem is, but in my main server clause i had

ssl_session_cache shared:SSL:1m;

and I didn't have any such option in my server gitlab stanza. So something something something I could not do any git commands via https.

And even with logging everything looked okay

GIT_CURL_VERBOSE=1 git clone https://gitlab.burgundywall.com/kneufeld/myproject.git
Cloning into 'myproject'...
* Couldn't find host gitlab.burgundywall.com in the .netrc file; using defaults
*   Trying 192.168.5.6...
* Connected to gitlab.burgundywall.com (192.168.5.6) port 443 (#0)
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
*   CAfile: /usr/local/etc/openssl/cert.pem
  CApath: none
* NPN, negotiated HTTP1.1
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* ALPN, server did not agree to a protocol
* Server certificate:
*  subject: CN=gitlab.burgundywall.com
*  start date: Sep  3 16:53:00 2016 GMT
*  expire date: Dec  2 16:53:00 2016 GMT
*  issuer: C=US; O=Let's Encrypt; CN=Let's Encrypt Authority X3
*  SSL certificate verify ok.
> GET /kneufeld/myproject.git/info/refs?service=git-upload-pack HTTP/1.1
Host: gitlab.burgundywall.com
User-Agent: git/2.9.3
Accept: */*
Accept-Encoding: gzip
Pragma: no-cache

* SSL read: error:00000000:lib(0):func(0):reason(0), errno 54
* Closing connection 0
fatal: unable to access 'https://gitlab.burgundywall.com/kneufeld/myproject.git/': SSL read: error:00000000:lib(0):func(0):reason(0), errno 54

except it didn't work.

Anyhow, when I finally figured out that ssl_session_cache was the issue and did some reading I just made sure that each ssl server has it's own cache.

ssl_session_cache shared:SSL-gitlab:1m;

Hours.

Category: tech, Tags: git, linux, nginx
Comments: 0
@ wrote... (1 year, 5 months ago)

I was trying to get Plex to run in a container on CoreOS and for the life of me I couldn't get it to start. I kept getting the following error:

Error: Unable to set up server: bind: Cannot assign requested address (N5boost16exception_detail10clone_implINS0_19error_info_injectorINS_6system12system_errorEEEEE)

It turns out that at some point I had enabled IPv6 and that caused the problem.

So edit your Preferences.xml and disable IPv6 via EnableIPv6="0"

Here's my plex.service for completeness.

[Unit]
Description=plex media server
After=docker.service
#After=docker-registry.service

[Service]
TimeoutStartSec=0
Restart=always
KillMode=none
EnvironmentFile=/media/metadata/plex/environment
ExecStop=-/usr/bin/docker stop plex
ExecStartPre=-/usr/bin/docker kill plex
ExecStartPre=-/usr/bin/docker rm plex
ExecStartPre=/usr/bin/docker pull timhaak/plex:latest
ExecStart=/usr/bin/docker run --name plex --rm \
--net=host \
--env-file /media/metadata/plex/environment \
-v /home/plex:/config \
-v /home/media:/media \
timhaak/plex:latest
Category: tech, Tags: docker, plex
Comments: 0
@ wrote... (1 year, 8 months ago)

Yesterday I was working on Pygments during a Pycon 2016 sprint and added markdown syntax highlighting (with help from Tim Hatch). My pull request just got merged so version 2.2 will finally highlight GitHub flavored markdown (issue).

Category: tech, Tags: python
Comments: 0
@ wrote... (1 year, 8 months ago)

I was working on Magic Wormhole during a Pycon 2016 sprint and noticed that zipfiles don't preserve file permissions. I'm not the only one who's noticed this (some posts go back over five years) but it still doesn't appear to be fixed.

Anyhow, here's how I did it…

more…

Category: tech, Tags: python
Comments: 1
@ wrote... (1 year, 9 months ago)

At work I upgraded to Ubuntu 16.04 LTS and every time I ran gvim I got a bunch of errors.

(gvim:19805): Gtk-WARNING **: /usr/lib/x86_64-linux-gnu/gtk-2.0/2.10.0/immodules/im-fcitx.so: cannot open shared object file: No such file or directory
(gvim:19805): Gtk-WARNING **: Loading IM context type 'fcitx' failed

more…

Category: tech, Tags: linux, ubuntu
Comments: 0
@ wrote... (1 year, 11 months ago)

It took a bit of doing but I was able to install Webzash in a Docker container behind a nginx web server. Here's how I did it.

Plus some notes on database permissions.

more…

Category: tech, Tags: accounting, linux, nginx
Comments: 0
@ wrote... (2 years, 5 months ago)

I recently moved my web server to Digital Ocean but apparently didn't properly configure my python virtual environment. My apologies to whomever tried to leave a comment but couldn't.

It should all work now.

Category: tech
Comments: 0
@ wrote... (2 years, 8 months ago)

Gitolite uses a slightly funky url scheme that can wreck havoc with other tools. In particular I wanted to use Google Repo (worst name ever by the way, htf do you search for git and repo to find this?)

Anyway, here's how…

more…

Category: tech, Tags: git
Comments: 0
@ wrote... (2 years, 9 months ago)

I often want to make a directory and then immediately cd into that directory.

mkdir foo
cd foo

put the following in your .bashrc

function mcd()
{
    mkdir $*
    args=($*)
    cd ${args[@]:(-1)}
}

and then

source ~/.bashrc
mcd -p a/b/c/d
Category: tech, Tags: shell
Comments: 0