Commit c801effa authored by Michael Murtaugh's avatar Michael Murtaugh

observatory prep notes

parent 237fb8bd
---
title: "Etherbox: The novel"
---
Initial image + setup
==============================
Based on [2017-04-10-raspian-jessie-lite.zip](https://downloads.raspberrypi.org/raspbian_lite_latest.torrent)
unzip -p 2017-04-10-raspbian-jessie-lite.zip | pv | sudo dd of=/dev/sdc bs=4M
SSH is no longer on by default!
So need to connect with a screen first time and turn this on.
sudo raspi-config
Enable ssh under connectivity.
Bring the rest of the software up to date.
sudo apt-get update
sudo apt-get upgrade
Setup apache to serve the root with custom header + readme's
=======================================
sudo apt-get install apache2
cd /etc/apache2/sites-available
sudo nano 000-default
```
ServerAdmin webmaster@localhost
# DocumentRoot /var/www/html
DocumentRoot /
<Directory />
Options Indexes FollowSymLinks
AllowOverride none
Require all granted
</Directory>
HeaderName /home/pi/include/HEADER.shtml
ReadmeName README.html
```
NB: Sets the [HeaderName](https://httpd.apache.org/docs/current/mod/mod_autoindex.html#headername) and [ReadmeName](https://httpd.apache.org/docs/current/mod/mod_autoindex.html#readmename) directives (part of mod_autoindex).
sudo service apache2 reload
### droptoupload.cgi
sudo a2enmod cgi
sudo service apache2 restart
Placed 'droptoupload.cgi' in /usr/lib/cgi-bin and tried running it with:
./droptoupload.cgi
Like this is just outputs an HTML form. Looking at <http://etherbox.local/cgi-bin/droptoupload.cgi> should also display an upload form.
The HEADER.shtml includes a link to this cgi.
HEADER.shtml
==================
```html
<script src="/cgi-bin/droptoupload.cgi"></script>
<style>
body {
background: #38b8e9;
color: black;
}
a {
color: white;
}
#logo {
white-space: pre;
font-family: monospace;
}
</style>
<div class="links" style="margin-bottom: 1em">LOCAL:
<a href="/">&nbsp;/&nbsp;</a>
<a href="/home/pi/">home</a>
<a href="/home/pi/etherdump/">etherdump</a>
PUBLIC:
<a href="http://constantvzw.org/site/-The-Technogalactic-Software-Observatory-.html">constant</a>
<a href="https://gitlab.constantvzw.org/observatory">gitlab</a>
</div>
<style>
.links {
font-family: monospace;
text-transform: uppercase;
</style>
<script>
document.addEventListener("DOMContentLoaded", function () {
var p = document.querySelectorAll(".top"),
t = document.getElementsByTagName("table")[0];
for (var i=0, l=p.length; i<l; i++) {
document.body.insertBefore(p[i], t);
}
});
</script>
```
Better permissions with facl
=======================
[setfacl](http://www.linuxcommand.org/man_pages/setfacl1.html)
sudo addgroup pi www-data
sudo setfacl -Rm g:www-data:rwX /home/pi
sudo setfacl -d -Rm g:www-data:rwX /home/pi
Unfortunately, I had problems then with permissions on the .ssh folder (preventing keys to be used). To remove the fact on just this folder:
sudo chmod g-w /home/pi
Set up etherpad
==================================
And the version of "nodejs" is now 0.10.29~dfsg-2.
So let's try it with etherpad...
sudo apt-get install npm git
sudo ln -s /usr/bin/nodejs /usr/bin/node
cd /opt
sudo git clone https://github.com/ether/etherpad-lite.git
sudo mv etherpad-lite etherpad
# TODO: don't create home folder! ... find option
sudo adduser --system --home=/opt/etherpad --group etherpad
sudo chown -R etherpad:etherpad etherpad
Used password VJ.
Run etherpad for the first time as the etherpad user...
cd /opt/etherpad
sudo --user etherpad bin/run.sh
Following the first recipe on this page about [deploying etherpad as a systemd service](https://github.com/ether/etherpad-lite/wiki/How-to-deploy-Etherpad-Lite-as-a-service)
sudo nano /etc/systemd/system/etherpad.service
```
[Unit]
Description=Etherpad-lite, the collaborative editor.
After=syslog.target network.target
[Service]
Type=simple
User=etherpad
Group=etherpad
WorkingDirectory=/opt/etherpad
ExecStart=/usr/bin/nodejs /opt/etherpad/node_modules/ep_etherpad-lite/node/server.js
Restart=always
[Install]
WantedBy=multi-user.target
```
After this,
sudo service etherpad start
Seems to work! Apparently it's the same as:
systemctl start etherpad-lite
And to start on boot:
systemctl enable etherpad-lite
etherdump
===============================
System wide installation of etherdump
Install deps:
sudo apt install python-pip python-dev
sudo pip install python-dateutil jinja2 html5lib
Install from repo:
git clone http://murtaugh@gitlab.constantvzw.org/aa/etherdump.git
cd etherdump
sudo python setup.py install
### Setup the folder
cd /home/pi
mkdir etherdump
cd etherdump
etherdump init
Type in:
http://etherbox.local:9001/
And paste the API key. (Look at: http://etherbox.local/opt/etherpad/APIKEY.txt)
### styles.css + versions.js
scp styles.css versions.js pi@etherbox.local:etherdump/lib
The URLs of these files are options to the etherdump pull command and should match.
### etherdump.sh + cron
Make the script that runs automatically.
nano etherdump.sh
```
#!/bin/bash
# PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games
cd /home/pi/etherdump
etherdump pull --all --pub /home/pi/etherdump --css lib/styles.css --script lib/versions.js
etherdump index *.meta.json > index.html
```
And set it to run every 5 minutes
crontab -e
```
PATH=/home/pi/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
# m h dom mon dow command
*/5 * * * * /home/pi/etherdump.sh > /home/pi/cron.log.txt 2>&1
```
The PATH is important. It can also be in the etherdump.sh but basically should match what you see when you "echo $PATH" (for the script to run in the same way as for the pi user).
Other software
=========================================
sudo apt-get install emacs-nox screen pdftk pandoc texlive-latex-recommended texlive-fonts-recommended
sudo pip install csvkit
To install
* screen
* pandoc + latex
* pdftk
* csvkit
What about
* texlive-xetex texlive-luatex pandoc-citeproc etoolbox
The current version of pandoc in this raspbian is 1.12.4.2~dfsg-1+b3
We will use latex for PDF generation (via pandoc)
(which is way better than 1.9 of the previous raspian, and even beats the instructions for compiling 1.11.1)
MORE
sudo apt-get install pandoc texlive-latex-recommended texlive-fonts-recommended
Was able to:
pandoc --from markdown hello.markdown -o hello.pdf
Access point
==================================
Taken from [this "ultimate" guide](https://pzwiki.wdka.nl/mediadesign/The_Ultimate_RPi_Installation_Guide#Access_Point_with_Captive_Portal)
apt-get install dnsmasq wireless-tools hostapd
# the next wasn't necessary for jessie, but for completeness..
RPI3 broadcom chip
apt-get install firmware-brcm80211
rmmod brcmfmac
modprobe brcmfmac
Give fixed IP to wlan0 interface, edit /etc/network/interfaces switch off the built in stuff and add (section 2):
auto eth0
allow-hotplug eth0
iface etho inet dhcp
#################################
# 1. ORIGINAL settings... use wpa_supplicant for client mode
#allow-hotplug wlan0
#iface wlan0 inet manual
# wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
#
#################################
# 2. Fixed IP address (for hotspot / hostapd)
auto wlan0
iface wlan0 inet static
address 10.9.8.7
netmask 255.255.255.0
#################################
Replace /etc/dnsmasq.conf with:
interface=wlan0
dhcp-range=10.9.8.10,50.9.8.254,12h
address=/#/10.9.8.7
no-resolv
Edit /etc/hostapd/hostapd.conf file (adjust depending on driver/hardware)
interface=wlan0
driver=nl80211
ssid=WiFeels
hw_mode=g
channel=6
Edit /etc/default/hostapd and add
DAEMON_CONF="/etc/hostapd/hostapd.conf"
Make hostapd start at boot
update-rc.d hostapd defaults
Reboot.
Makeserver + etherpad (experimental!)
=======================================
Ingredients
* Etherdump's pad.html with <rel> links including LIVE EDIT URLs
* THIS should replace/complement makeserver's EDIT button
Key question:
Makeserver as a separate view ?! (probably)
TRY as 2 separate things ... basically AS IS...
Install:
cd /home/pi/software
git clone http://murtaugh@gitlab.constantvzw.org/aa/makeserver.git
cd makeserver
git submodule init
git submodule update
sudo pip install twisted jinja2
BUGFIX with twisted / SSL issues:
sudo pip install twisted[tls]
DIDN"T FIX
sudo pip install twisted==16.0.0
Seems to work!
TODO
==============
* Why are the links hardcoded long form in etherdump index (fails then via makeserver based in home)?
Extra
==========
Changed dnsmasq.conf
interface=wlan0
dhcp-range=10.9.10.50,10.9.10.254,12h
#address=/#/10.9.10.7 # no-resolv
AND added to /etc/hosts
10.9.10.7 etherbox.local
and this seems to then work over the direct hotspot connection.
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