• http://npras.in - my portfolio site
• http://tech.npras.in - my tech blog
• http://diary.npras.in - my book notes and ramblings

All these jekyll codes generate their sites to a different repo: https://github.com/npras/npras.in.sites.

Deployment happens through git's post-update hook.

The hook is present in the production remote (bare git repo) present in the server.

Here's the hook code, present in /home/deployer/npras.in.sites.git/hooks/post-update file:

#!/bin/sh

#
# An example hook script to prepare a packed repository for use over
# dumb transports.
#
# To enable this hook, rename this file to "post-update".

GIT_WORK_TREE=/var/www/html/npras.in.sites git checkout -f

The file is an executable.

The dir /var/www/html/npras.in.sites is owned by deployer, and group www-data has access to it.

deployer user is added to www-data group.

Every time a site is updated, I push to 2 remotes:

$ git push # origin master
$ git push prod # master

The 2nd remote - prod - points to my server's bare git repo:

$ git remote -v
origin	[email protected]:npras/npras.in.sites.git (fetch)
origin	[email protected]:npras/npras.in.sites.git (push)
prod	prasblog:/home/deployer/npras.in.sites.git (fetch)
prod	prasblog:/home/deployer/npras.in.sites.git (push)

So a push to this remote triggers the post-update hook defined above in the server.

The hook will force-checkout the working tree present at the (another) local repo present in the server at /var/www/html/npras.in.sites. GIT_WORK_TREE dynamically sets the working tree (dir) path for the command git checkout -f

The deploy is done!

• cd
• mkdir npras.in.sites.git && cd into it
• git init --bare
• create the git hook as mentioned above

• git remote -v
• g remote add prod prasblog:/home/deployer/npras.in.sites.git
• git remote -v origin [email protected]:npras/npras.in.sites.git (fetch) origin [email protected]:npras/npras.in.sites.git (push) prod prasblog:/home/deployer/npras.in.sites.git (fetch) prod prasblog:/home/deployer/npras.in.sites.git (push)
• git push prod master

• /etc/apache2/sites-available/diary.npras.in.conf

<VirtualHost *:80>
  ServerName diary.npras.in
  ServerAlias diary.npras.in

  ServerAdmin webmaster@localhost
  DocumentRoot /var/www/html/npras.in.sites/diary.npras.in
  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined

  <Directory /var/www/html/diary>
    AllowOverride All
  </Directory>

</VirtualHost>

• /etc/apache2/sites-available/tech.npras.in.conf

<VirtualHost *:80>
  ServerName tech.npras.in
  ServerAlias tech.npras.in

  ServerAdmin webmaster@localhost
  DocumentRoot /var/www/html/npras.in.sites/tech.npras.in
  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined

  <Directory /var/www/html/tech>
    AllowOverride All
  </Directory>

</VirtualHost>

• /etc/apache2/sites-available/books.npras.in.conf

<VirtualHost *:80>
  ServerName books.npras.in
  ServerAlias books.npras.in

  ServerAdmin webmaster@localhost
  DocumentRoot /var/www/html/npras.in.sites/books.npras.in
  ErrorLog ${APACHE_LOG_DIR}/error.log
  CustomLog ${APACHE_LOG_DIR}/access.log combined

  <Directory /var/www/html/books>
    AllowOverride All
  </Directory>

</VirtualHost>

• /etc/apache2/sites-available/npras.in.conf

<VirtualHost *:80>
	ServerName npras.in
	ServerAlias www.npras.in

	ServerAdmin webmaster@localhost
	DocumentRoot /var/www/html/npras.in.sites/npras.in

	ErrorLog ${APACHE_LOG_DIR}/error.log
	CustomLog ${APACHE_LOG_DIR}/access.log combined

</VirtualHost>