Perl 6 - the future is here, just unevenly distributed

IRC log for #crimsonfu, 2014-11-15

crimsonfu - sysadmins who code

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All times shown according to UTC.

Time Nick Message
06:28 prologic Hi folks
06:28 prologic I'd like to announce a pre-release of autodock: https://registry.hub.docker.com/u/prologic/autodock/
06:28 prologic autodock -- Automating Docker
11:51 pdurbin nice
11:51 prologic yeah actually
11:51 prologic it is :)
11:51 prologic building a hipache plugin now
11:51 prologic that will let you dynamically setup vhosts for any web container
11:51 prologic by simply running it with a VIRTUALHSOT env var
11:51 prologic e.g:
11:52 prologic docker run -e VIRTUALHOST=foo.bar.com -p 80:80 my_web_image
11:53 pdurbin After Docker: Unikernels and Immutable Infrastructure — Medium - https://medium.com/@darrenrush/after-docker-unikernels-and-immutable-infrastructure-93d5a91c849e
11:53 pdurbin semiosis: ^^
12:13 pdurbin I was just saying yesterday that I'll feel like Docker has arrived when one of our users asks for us to distribute our application as a Docker container.
12:14 pdurbin so far they've only asked for RPMs
12:38 prologic heh
12:38 prologic I'm sure they will eventually :)
12:39 prologic Docker really is quite convenient though
12:39 prologic even on the Desktop
12:39 prologic just today, I wanted to convert a bunch of REDME.rst to README.md
12:39 prologic (because the Docker Hub doesn't support rendering rst yet)
12:40 prologic it's far eiaser to just run up someone's image of pandoc
12:40 prologic thatn it is to install haskell and all the dependeices of pandoc
12:40 prologic only to litter my system of something I'd hardly use :)
12:40 prologic so now I have a ~/bin/rst2md
12:40 prologic https://gist.github.com/b66bd4ddf4bd9e1b63cc
12:42 pdurbin yeah, I use Vagrant for quick experiments in installing stuff I don't want on my laptop
12:44 pdurbin prologic: do you always run docker as root?
12:44 pdurbin when you do `docker run`?
12:45 prologic err no never
12:45 prologic always as my local user
12:45 prologic also you should try it out yourself
12:45 prologic as opposed to Vagrant
12:45 prologic it's a hell of a lot faster to test things out :)
12:55 pdurbin I don't *want* to execute `docker run` as root. It's just that the last time I tried Docker I was on Fedora and there's all this weirdness there about sudo and Docker and groups: https://docs.docker.com/installation/fedora/
12:56 prologic oh
12:56 prologic that's just bad documentation :)
12:57 prologic what can I say -- developers suck at it
12:57 prologic needless to say
12:57 prologic install Docker
12:57 prologic add yourself to the "docker" group
12:57 prologic and you're done
12:57 prologic no sudo or root this
12:57 pdurbin ok, so you do have to add yourself to the "docker" group
12:57 prologic all kinds of silliness of nob jokey sysadmins :)
12:58 prologic yes b default the remote api (docker daemon) binds to /var/run/docker.sock
12:58 prologic you can tweak this by editing the systemd/upstart/init (whatever) startup for Docker
12:58 prologic docker --help
12:58 prologic it's the -H option
12:58 prologic e.g:
12:58 prologic docker -H tcp://0.0.0.0:2375
12:58 prologic 237t is the standardized port
12:58 prologic as recognized now by the (whatever that org is)
12:59 prologic 2375*
12:59 prologic or you can have both like I do on my desktop
12:59 prologic so I can access the Docker Daemon on my desktop via it's UNIX Socket at /var/run/docker.sock and via it's TCP endpoint from my MacBook Air
13:00 prologic so on my MBA I can do:
13:00 prologic docker run -i -t crux
13:00 prologic and instantaneously get a crux linux env
13:09 pdurbin ok, `sudo gpasswd -a pdurbin docker` (and logging out and back in) from https://docs.docker.com/installation/ubuntulinux/ seemed to work fine. and restarting docker
13:10 prologic awesome :)
13:10 pdurbin and now I'm in crux I think
13:10 prologic welcome to the evil wonderful world of Docker :)
13:10 prologic oh?
13:10 prologic typing crux will find out :)
13:11 pdurbin CRUX version 3.1
13:11 prologic yeap :)
13:11 prologic you are :)
13:11 prologic docker run -i -t crux/python
13:11 prologic :)
13:11 prologic or even better
13:11 prologic docker run -i -t --privileged crux/dind
13:11 prologic Docker-in-Docker :)
13:13 pdurbin running `rst2md index.rst` right now. it's downloading some stuff
13:14 pdurbin downloading pandoc
13:17 pdurbin and dependencies. slowly
13:19 prologic ahh cool :)
13:19 prologic it helps to have a fast connection sometimes
13:19 pdurbin ever so slowly
13:19 prologic often some folk are lazy and dont' optimize their iamges :)
13:20 prologic I Dockerized my UNIX as an IDE Development Environment last week
13:20 prologic so I can run my ide anywhere :)
13:20 prologic it's ~1.2G in size
13:20 prologic good thing my new job has Fibre :)
13:20 pdurbin so it's an image not a container?
13:22 pdurbin searchbot: lucky docker image vs container
13:22 searchbot pdurbin: http://docs.docker.com/terms/container/
13:23 pdurbin ok, so images are read-only
13:24 pdurbin containers are read-write
13:24 prologic the life-cycle is
13:24 prologic Image -> Container
13:24 prologic a Registry (e.g: Docker Hub) stores Images
13:24 prologic Docker runs Containers
13:24 prologic it also builds Images
13:24 prologic etc :)
13:24 prologic the whole ecosystem
13:24 pdurbin an image is like a snapshot of a container? I'm seeing `docker commit`
13:25 prologic yes containers are read/write
13:25 prologic however when they are terminated and removed
13:25 prologic all data is lost
13:25 prologic images are immutable
13:25 prologic umm
13:25 prologic images are built up of layers
13:25 prologic using COW - Copy on Write
13:25 prologic AUFS, BRTFS, devmapper
13:25 prologic are the main storage backends supported right now
13:26 prologic I use BTRFS myself here
13:26 prologic docker commit is useful for building images by hand
13:26 prologic e.g:
13:26 prologic docker run -it ubuntu /bin/bash
13:26 prologic ; install some crap
13:26 prologic ; exit
13:26 prologic docker commit ...
13:26 prologic then you have a new image based off ubuntu
13:27 prologic however caveat:
13:27 prologic this is not easily reproducible
13:27 prologic since you did it by hand :)
13:27 prologic so learn to user/write a Dockerfile
13:27 prologic lots of examples at https://bitbucket.org/cruxlinux/
13:28 pdurbin I'm sure I'll learn more as I play around.
13:28 pdurbin rst2md is still downloading gigabytes of pandoc dependencies
13:28 pdurbin well, one of them is over 600 MB at least. dunno the total
13:33 prologic $ docker images | grep pandoc
13:33 prologic jagregory/pandoc           latest              be6297221dd3        8 months ago        2.143 GB
13:34 prologic apparently huge
13:34 prologic one good reason why I didn't want to isntall it locally :)
13:34 prologic also lazy image author/maintainer
13:34 prologic probably didn't do an apt-get clean and/or merge multiple RUN statements (optimizing the image)
13:36 prologic http://code.activestate.com/recipes/578963-guess-a-number-2-the-computer-attempts-to-guess-yo/
13:36 prologic geez christ
13:36 * prologic weeps
13:36 pdurbin done! and now I have an index.md file. neat!
13:37 pdurbin and now it's fast to conver the next file. no downloading :)
13:38 pdurbin yeah, my /var/lib/docker/aufs is 2.9 GB now
13:39 prologic *nods*
13:39 pdurbin http://blog.thoward37.me/articles/where-are-docker-images-stored/ could get to the point faster ;)
13:39 prologic well locally in /var/lib/docker
13:39 prologic by default
13:39 prologic /data/docker on my desktop :)
13:39 prologic but one should not really look inside or touch the data storage area :)
13:40 prologic it's all black magic :)
13:40 prologic Also handy tip for when you get to building images
13:40 prologic docker rmi -f dangling=true
13:40 prologic remove stale dangling images
13:43 prologic https://pypi.python.org/pypi/hipachectl/0.0.1
13:43 prologic cool ^^^ :)
13:43 prologic one of my docker related tools is seeing some use
14:13 pdurbin I guess the first thing I think is "where would I host a Docker image I create?"
14:13 pdurbin it's easy to host a PHP app
14:13 pdurbin and I'm used to deploying Java webapps now
14:14 pdurbin and Django, a bit
14:14 pdurbin I've stood up Ruby on Rails apps
14:15 pdurbin CGI is easy
14:16 pdurbin it would be interesting if our ops people said, "We'd like a Docker image of your app. We love hosting Docker images/containers."
14:26 pdurbin the argument for writing apps in PHP because they're so easy to deploy: http://werd.io/2014/8-tips-for-writing-open-source-web-apps-that-anyone
14:47 pdurbin I guess I'm thinking it would be interesting if Docker becomes so popular that it becomes a common way to deploy apps.
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19:00 pdurbin bear: heh. nice to see you mentioning Circuits: http://indiewebcamp.com/irc/2014-11-15#t1416075419484
19:00 bear :)
19:00 bear I use and like circuits a lot
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22:43 prologic bear, oh really ?
22:44 prologic I haven't seen you before though :)
22:44 prologic what do you use circuits for?
23:18 pdurbin bear: ah. cool. I don't know a ton about circuits but I learn a bit here and there in #circuits

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