452 / 478
deploy_tools/provision.ansible.yaml.
---
- hosts: all
sudo: yes
vars:
host: $inventory_hostname
tasks:
- name: make sure required packages are installed
apt: pkg=nginx,git,python3,python3-pip state=present
- name: make sure virtualenv is installed
shell: pip3 install virtualenv
- name: allow long hostnames in nginx
lineinfile:
dest=/etc/nginx/nginx.conf
regexp='(\s+)#? ?server_names_hash_bucket_size'
backrefs=yes
line='\1server_names_hash_bucket_size 64;'
- name: add nginx config to sites-available
template: src=./nginx.conf.j2
dest=/etc/nginx/sites-available/{{ host }}
notify:
- restart nginx
- name: add symlink in nginx sites-enabled
file: src=/etc/nginx/sites-available/{{ host }}
dest=/etc/nginx/sites-enabled/{{ host }} state=link
notify:
- restart nginx
The vars section defines a variable “host” for convenience, which we can then use in the
various filenames and pass to the config files themselves. It comes from
$inventory_hostname
, which is the domain name of the server we’re running against
at the time.
In this section, we install our required software using
apt
, tweak the Nginx config to
allow long hostnames using a regular expression replacer, and then we write the Nginx
config file using a template. This is a modified version of the template file we saved into
deploy_tools/nginx.template.conf
in
Chapter 8, but it now uses a specific templating
syntax—Jinja2, which is actually a lot like the Django template syntax:
deploy_tools/nginx.conf.j2.
server {
listen 80;
server_name {{ host }};
location /static {
424
|
Appendix C: Provisioning with Ansible