guide/INSTALL.md

Points to keep in mind

The state/ directory contains the database. You can download the current database of guide.aelve.com by doing this:

$ git clone https://github.com/aelve/guide-database
$ mv guide-database state

The config.json file contains the config (it will be created at the 1st start). There are 4 settings so far:

• admin-password is the password for the admin panel (at /admin). Leave it empty if you don't want any password.

• google-token lets you set the Google site verification token. Leave it empty if you don't want Google verification.

• base-url is the URL of the server (which should contain http:// or https://). It's used for feed generation.

• prerender enables prerendering pages when the server starts. By default it's disabled (because it's annoying during development).

How to install locally

$ cabal install --only-dependencies
$ cabal build
$ dist/build/guide/guide

And go to http://localhost:8080. The status page is available at http://localhost:5050; the admin page, at http://localhost:8080/admin.

How to install on a server

I'm going to use Digitalocean and Ubuntu, but you can use anything else.

Create a droplet with Ubuntu. Install GHC:

$ add-apt-repository ppa:hvr/ghc
$ apt-get update
$ apt-get install ghc-7.10.3 cabal-install-1.22

Add cabal-install, GHC, and the cabal dir to PATH by adding

/opt/cabal/1.22/bin:/opt/ghc/7.10.3/bin:$HOME/.cabal/bin

to PATH in ~/.bashrc and then doing source ~/.bashrc.

Clone and build guide:

$ git clone https://github.com/aelve/guide
$ cd guide
$ cabal update
$ cabal install --dependencies-only
$ cabal build

Make a new subdomain in Apache. For me, it means writing this to /etc/apache2/sites-available/guide.conf:

<VirtualHost *:80>
  ServerName guide.aelve.com

  ProxyPreserveHost On
  ProxyPass / http://0.0.0.0:8080/
  ProxyPassReverse / http://0.0.0.0:8080/
</VirtualHost>

If you want the status page to be available as well, write:

<VirtualHost *:80>
  ServerName guide.aelve.com

  ProxyPreserveHost On
  ProxyPass /status/ http://0.0.0.0:5050/
  ProxyPassReverse /status/ http://0.0.0.0:5050/
  ProxyPass / http://0.0.0.0:8080/
  ProxyPassReverse / http://0.0.0.0:8080/
</VirtualHost>

(Note that it will only be available at /status/, not /status.)

Enable the remoteip module (this is needed so that the /admin page would display actual IPs instead of 127.0.0.1):

$ a2enmod remoteip

Enable the site:

$ a2ensite guide
$ service apache2 reload

Create a daemon. This goes to /etc/init/guide.conf (the path is going to be something other than /root/guide for you):

start on filesystem or runlevel [2345]
stop on runlevel [!2345]
chdir /root/guide
env LC_ALL=en_US.UTF-8
exec dist/build/guide/guide

Start the daemon:

$ service guide start

Database

You can set automatic backups of the database to your own repository.

Create .gitignore in the state/ folder:

events*
*.lock

Create a repository locally and remotely. If you're using Github, you can avoid having to enter passwords by generate an access token and using it as username when adding a remote:

$ git remote add origin https://<token>@github.com/aelve/guide-database.git

Next, create upload.sh:

cd /root/guide/state
git add -A
GIT_COMMITTER_NAME='auto' GIT_COMMITTER_EMAIL='' git commit --author="auto <>" -m "`date`"
git push

$ chmod +x upload.sh

Finally, make a cron job that would try to upload new data every 10m (tho the actual checkpoints are only created once per hour):

$ crontab -e

*/10 * * * * /bin/bash /root/guide/upload.sh