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资源说明：a web interface for viewing collectd statistics
Jarred
======
Jarred is a viewer for RRD files generated by collectd. In other words it's a
web frontend for collectd.
Features:
* Server is written in C (so probably fast)
* Json-based graphs in js (no binary parsing in js, no slow picture generation
on server)
* Graphs are interactive (zoom, values, etc.)
* Customizable presets for dashboard page
Quick Run Guide
---------------
Building with ``./waf`` is easy::
./waf configure --prefix=/usr
./waf build
You need to have zerogw_ installed.
.. _zerogw: http://github.com/tailhook/zerogw
The easiest way to run it from build dir::
zerogw -c ./zerogw.yaml &
./build/jarred-zgw -c ipc://./socket -d /path/to/rrd -p /rrd
Then you can navigate to::
http://localhost:8000
Installation
------------
We currently have only ArchLinux package. You can just install it from AUR.
For other users installation procedure follows.
Installing with ``./waf`` is easy::
./waf configure --prefix=/usr
./waf build
sudo ./waf install
Now you can use ``jarred-cli`` to get JSONs, but to use web frontend more work
is needed.
You need to have zerogw_ installed. Stating with distributed ``zerogw.yaml``
you need to change socket from ``ipc://./socket`` to something like
``ipc:///var/run/zerogw/jarred.sock``. And change ``root`` under ``static``
section from ``./public`` into something similar to
``/usr/share/jarred/public``. Now you can run zerogw (refer to zerogw manual
for more details)
``jarred-zgw`` itself has only few command-line options. You need to duplicate
socket address you've written in zerogw, and specify path for rrd::
./build/jarred-zgw -c ipc:///var/run/zerogw/jarred.sock -d /var/lib/collectd -p /rrd
(Where ``-p /rrd`` is path in the zerogw config, this is only variant supported
by current js frontend). Now you can navigate to a zerogw instance, for the
example config it's::
http://localhost:8000
Customizing
-----------
Your dashboard is initially empty, so you may want to proceed to *custom* tab
at the right. Jarred is installed with no presets, so you should define your
own ones. Use ``public/js/presets.js.sample`` as reference, and put file
``public/js/presets.js`` with your changes (the public directory is usually
placed under ``/usr/share/jarred/public``).
You may also want to add your custom rules. Create ``public/js/rules_local.js``
Use ``public/js/rules.js`` as an example.
.. note::
ArchLinux package puts symlinks to ``/etc/jarred/presets.js`` and
``/etc/jarred/rules_local.js`` for easier managing. Arch package also has
``/etc/rc.d/jarred`` startup script which finds out collectd dir by scanning
``/etc/collectd.conf``. Don't forget to configure and run zerogw anyway.
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