Development with Python

[superlists.ottg.eu] out: Creating table auth_permission

[...]

[superlists.ottg.eu] out: Creating table lists_item

[superlists.ottg.eu] out: Installing custom SQL ...

[superlists.ottg.eu] out: Installing indexes ...

[superlists.ottg.eu] out: Installed 0 object(s) from 0 fixture(s)

[superlists.ottg.eu] out:

Done.

Disconnecting from superlists.ottg.eu... done.

Brrp brrp brpp

. You can see the script follows a slightly different path, doing a

git

clone

to bring down a brand new repo instead of a

git pull

. It also needs to set up a

new virtualenv from scratch, including a fresh install of pip and Django. The

collect

static

actually creates new files this time, and the

migrate

seems to have worked too.

Nginx and Gunicorn Config Using sed

What else do we need to do to get our live site into production? We refer to our provi‐

sioning notes, which tell us to use the template files to create our Nginx virtual host and

the Upstart script. How about a little Unix command-line magic?

elspeth@server

sed "s/SITENAME/superlists.ottg.eu/g" \

deploy_tools/nginx.template.conf | sudo tee \

/etc/nginx/sites-available/superlists.ottg.eu

sed

(“stream editor”) takes a stream of text and performs edits on it. It’s no accident that

the fabric string substitution command has the same name. In this case we ask it to

substitute the string

SITENAME

for the address of our site, with the

s/replaceme/

withthis/g

syntax. We pipe (

) the output of that to a root-user process (

sudo

), which

uses

tee

to write what’s piped to it to a file, in this case the Nginx sites-available vir‐

tualhost config file.

We can now activate that file:

elspeth@server

sudo ln -s ../sites-available/superlists.ottg.eu \

/etc/nginx/sites-enabled/superlists.ottg.eu

Then we write the upstart script:

elspeth@server

sed "s/SITENAME/superlists.ottg.eu/g" \

deploy_tools/gunicorn-upstart.template.conf | sudo tee \

/etc/init/gunicorn-superlists.ottg.eu.conf

Finally we start both services:

elspeth@server

sudo service nginx reload

elspeth@server

sudo start gunicorn-superlists.ottg.eu

And we take a look at our site. It works, hooray!

Trying It Out

165