#HopGlass Server The HopGlass Server collects data from Freifunk networks and processes it to be used in HopGlass, for statistics and other purposes.

Warning: The HopGlass Server is subject to major changes. Updates may require manual intervention.

##How to use

ArchLinux or Debian-based systems using systemd (preferred)

i.e. Debian Jessie or newer, Ubuntu 15.04 or newer

1. Run # wget https://raw.githubusercontent.com/hopglass/hopglass-server/v0.1.1/scripts/bootstrap.sh; bash bootstrap.sh; rm bootstrap.sh
2. Review and edit the default configuration located at /etc/hopglass-server/default/config.json.
3. Start the HopGlass Server: # systemctl start hopglass-server@default
4. (Optional) Automatically start the HopGlass Server at boot: # systemctl enable hopglass-server@default

Possible webserver queries

Query Location	Description
/nodes.json	HopGlass nodes.json v2
/graph.json	HopGlass graph.json v1
/mv/nodes.json	Meshviewer nodes.json v2
/mv/graph.json	Meshviewer graph.json v1
/raw.json	Raw data collected, same as the raw.json save file
/hosts	hosts file to be placed in /etc/hosts
/metrics	Prometheus metrics
/wifi-aliases.txt	Aliases file for Wifi Analyzer app
/WifiAnalyzer_Alias.txt	Aliases file for Wifi Analyzer app
/ffapi.json	Freifunk API file
/nodes.zone	Named DNS zone file

##Metrics values

###per node (all with the labels hostname, nodeid and gateway):

• statistics.clients.total
• statistics.uptime
• statistics.traffic
• statistics.loadavg
• statistics.memory_usage

###total values:

• meshnodes_total
• meshnodes_online_total
• total_clients
• total_traffic

##Development timeline

oldmaster (maintenance)

v0.1.1 (current)

• fully modular conversion system
• many bugfixes
• meshviewer provider
• ffapi provider
• label-based traffic metrics

v0.2 (next)

• provide a graph-generation implementation for all providers
• graph caching
• handle gateway flag correctly without aliases
• alfred receiver

v0.3

• new HopGlass data format
• network-transparent receivers

v1.0

• definition of the Prometheus metrics format
• definition of the transitional data format
• definition of the configuration format

##Installation without systemd

Debian-based systems without systemd

i.e. Debian Wheezy or older, Ubuntu 14.10 or older

Warning: untested, unsupported, not recommended

1. Run # wget https://raw.githubusercontent.com/hopglass/hopglass-server/v0.1.1/scripts/bootstrap.sh; bash bootstrap.sh; rm bootstrap.sh
2. Create a start script in /usr/local/bin/ similar to this: su - hopglass --shell /bin/bash -c "cd server; node hopglass-server.js --config /etc/hopglass-server/$1/config.json"
3. Create an init-script in /etc/init.d/.

##After installation

You might want to

• Install a webserver (search for Nginx or Apache) and configure a reverse proxy and gzip-compression
• Install HopGlass
• Install Prometheus and Grafana