Graphite

send logs to mount point in Graphite

Asked by kumar

HI .
I had installed Graphite in Centos by refereeing "http://www.unixmen.com/install-graphite-centos-7/" and everything is working fine.

Now i need to change the logs path to attached volume.So, when looked into " /opt/graphite/conf/carbon.conf" found below lines:

 STORAGE_DIR = $GRAPHITE_STORAGE_DIR
# LOCAL_DATA_DIR = STORAGE_DIR/whisper/
# WHITELISTS_DIR = STORAGE_DIR/lists/
# CONF_DIR = STORAGE_DIR/conf/
# LOG_DIR = STORAGE_DIR/log/
# PID_DIR = STORAGE_DIR/

I guess i can change the path, in line "# LOG_DIR= STORAGE_DIR/log/" to "LOG_DIR = mounted_point/log/" by stop/start service.

I am doing this because ,the server will not run out of disk, as logs are getting stored in mounted volume.
Please correct me ,if i am wrong.

Thanks in advance.

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Denis Zhdanov (deniszhdanov) said : 		#1

You're right. Just check that your mountpoint file ownership/permissions will allow carbon user to write logs there.

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kumar (dvrkittu) said : 		#2

Thanks for Confirming.

I had mounted the log directory to mountpoint/log.
I changed permission also.

We have carbon-cache/carbon-cache-a and webapp folders in log directory.

When mounted done ,i could see only carbon-cache-a folder gets updated and webapp folder logs are not getting update,rather webapp folder gets still updated in /opt/graphite/storage/log/webapp.

Please let me know why such behaviour for webapp logs.
Thanks in advance

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kumar (dvrkittu) said : 		#3

--continuous to above question

HI ,

I need to know the path ,Where carbon writes data,So i can replace that path to mount point.

Please help me .

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Denis Zhdanov (deniszhdanov) said : 		#4

Sorry, Kumar, I do not really understand what you mean. If you are asking where graphite store its whisper files it is /opt/graphite/storage/whisper by default. In your case, you can move whole /opt directory to new mountpoint and do not touch anything else.

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kumar (dvrkittu) said : 		#5

Thanks Denis !!

My need is store data and logs in mount point.

For carbon logs ,this is path "/opt/graphite/storage/log/carbon-cache/carbon-cache-a/" .

For whisper logs,this is path "/opt/graphite/storage/whisper"

For webapp logs ,this is path "/opt/graphite/storage/log/webapp"

Also carbon stores data using whisper ,so i need to confirm where it stores .So that i can push it to mount point.

In short my need is:
1.where is data saving?
2.replace that storing path with mounted path

As you said ,if i move whole /opt directory ,i will get whole graphite in mount point. That is installation will be in root volume and whole data will be in mounted volume .Please correct if i am wrong

Please suggest the feasible solution.

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kumar (dvrkittu) said : 		#6

HI,

I mounted whisper/carbon-cache logs to mount point with all suitable permissions.

Issue i am facing is:

Though i can see in whisper ,the metrics but in Graphite UI ,I cannot see anything.

And so removed the mount point and allowed as it was earlier,then i can see the metrics in graphite UI.

Not sure what's going wrong.Please suggest.

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kumar (dvrkittu) said : 		#7

Thnak's It got resolved