Admin: /* ModWSGI */

2018-01-29T18:50:18Z
ModWSGI
← Older revision		Revision as of 18:50, 29 January 2018
Line 177:		Line 177:

	[[Image:GraphiteBrokenErrors.png]]		[[Image:GraphiteBrokenErrors.png]]


			=Flags=


			[[Category:Graphite]]
			[[Category:Database]]
			[[Category:Monitoring]]
			[[Category:Logging]]
			[[Category:Time Series]]
Admin: Created page with "=Installing= ==Prerequisites== PyCairo prerequisite: PyCairo ==Installing Graphite== Git checkout cd git dir
 python setup.py build && python setup.py install 
2014-06-26T19:07:02Z
Created page with "=Installing=  ==Prerequisites==  PyCairo prerequisite: PyCairo  ==Installing Graphite==  Git checkout  cd git dir  <pre> python setup.py build && python setup.py install </pr..."
New page
=Installing=



==Prerequisites==



PyCairo prerequisite: [[PyCairo]]



==Installing Graphite==



Git checkout



cd git dir



<pre>

python setup.py build && python setup.py install

</pre>



==Installing Carbon==



<pre>

python setup.py build && python setup.py install

</pre>



==Installing Whisper==



<pre>

python setup.py build && python setup.py install

</pre>



=Setting Things Up=



Once you've installed everything, assuming you went with the default installation configuration, graphite will be in <code>/opt/graphite</code>. That includes Graphite web app frontends, Carbon, and Whisper.



Now I'll cover how to get each component running and get simple I/O working.



==Setting Up Graphite==



I followed these instructions for getting Graphite set up and installed and running and all that:



* http://graphite.readthedocs.org/en/latest/install.html



I installed graphite from source to the default location:



* http://graphite.readthedocs.org/en/latest/install-source.html



The way to test Graphite is not really to test it on its own, but rather to test it via/with Carbon.



==Setting Up Carbon==



To get Carbon running, you have to start with some configuration files, described on this page:



* http://graphite.readthedocs.org/en/latest/config-carbon.html



Basically, you give some thought to your schema - see this page http://graphite.wikidot.com/getting-your-data-into-graphite for information on what I mean. Decide your time series data naming convention, then decide how much data to gather, at what frequency. 



Enter information about your storage schema in your <code>storage-schemas.conf</code> file, located in <code>/opt/graphite/conf/storage-schemas.conf</code>; example: 



<pre>

[dummy]

priority = 100

pattern = dummy

retentions = 1:7200

</pre>



which will gather data at a frequency of 1 Hz for 2 hours (7200 seconds total).



There are a couple of other files to modify, specifically <code>relay-rules.conf</code> and <code>carbon.conf</code>. For these, I used the examples provided by the installation.



Once you've finished, it's time for the hello world tests.



=Hello World=



==Hello Carbon World==



===Start===



First step is to start Carbon:



<pre>

/opt/graphite/bin/carbon-cache.py start

</pre>



If you see some regular expression problems, try fixing your regular expression in your storage-schemas configuration file, in the "pattern" field.



===Log Files===



Once you've started Carbon, take a look at the log files in 



<pre>

/opt/graphite/storage/log/carbon-cache/

</pre>



===Sending Data to Carbon===



When it comes to describing how to send data to Carbon, the Graphite documentation is pretty pathetic. Here's their page:



http://graphite.readthedocs.org/en/latest/feeding-carbon.html



What's missing is any description of how to check if Carbon has received the data correctly, what the messages in the log file mean, or even whether a piece of data has been processed by Carbon at all, or whether it has been put into a database. For that matter, maybe some description of whether Carbon has connected to the MongoDB database? Or how about some indication if the database isn't even running?



If you send data to the port, using the nc command given in the Graphite documentation,



<pre>

echo "channel.name 12345 `date +%s`" | nc $SERVER $PORT

</pre>



you can check the listener log file and see something like this for each piece of data you send to the port Graphite/Carbon is listening to (specified with DESTINATION in carbon.conf file):



<pre>

25/06/2014 13:59:49 :: MetricLineReceiver connection with 127.0.0.1:50930 established

25/06/2014 13:59:49 :: MetricLineReceiver connection with 127.0.0.1:50930 closed cleanly

</pre>



==Hello Graphite Webapp World (Crap Version)==



Following this page:



* http://graphite.readthedocs.org/en/latest/config-local-settings.html



You can configure your Graphite webapp using the configuration file settings described in the link above.



Following this page:



* http://graphite.wikidot.com/quickstart-guide



You can go through a simple example step-by-step.



I copied <code>local_settings.py.example</code> to <code>local_settings.py</code> and set <code>DEBUG = True</code> in the config file.



Next, you'll start the Carbon data collector:



<pre>

python /opt/graphite/bin/carbon-cache.py --debug start

</pre>



Now run one of the example scripts,



<pre>

$ python /opt/graphite/examples/example-client.py



sending message



--------------------------------------------------------------------------------

system.loadavg_1min 1.46 1403734071

system.loadavg_5min 1.26 1403734071

system.loadavg_15min 1.20 1403734071



</pre>



Now you can check the whisper storage directory, located in <code>/opt/graphite/storage/whisper/</code>, and verify that data is being dumped into the proper buckets:



<pre>

$ ls /opt/graphite/storage/whisper/

system



$ ls -l system/

total 120

-rw-r--r--  1 charlesreid  admin  17308 Jun 25 15:08 loadavg_15min.wsp

-rw-r--r--  1 charlesreid  admin  17308 Jun 25 15:08 loadavg_1min.wsp

-rw-r--r--  1 charlesreid  admin  17308 Jun 25 15:08 loadavg_5min.wsp

</pre>



==Hello Graphite Webapp World (Good Version)==



http://kaivanov.blogspot.com/2012/02/how-to-install-and-use-graphite.html



Yet another example/guide:



http://geek.michaelgrace.org/2011/09/how-to-install-graphite-on-ubuntu/



===ModWSGI===



After dealing with a bunch of ModWSGI issues, I finally saw this dashboard when I started Apache and go to 0.0.0.0:



[[Image:GraphiteBroken.png]]



There are things on the page, but everything is broken. (Probably because of a bunch of 403s, shown when I pop open a browser console:)



[[Image:GraphiteBrokenErrors.png]]
Graphite/Old - Revision history

Admin: /* ModWSGI */
