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New question #199769 on Graphite:
https://answers.launchpad.net/graphite/+question/199769

I have written an aggregation rule to do sum on the incoming metrics from different hosts. Somehow this is not working. I am quite a newbie and please forgive my question if this is quite stupid :-) Any help would be really great.

Do i need to have carbon-relay running to do aggregation? Who forwards the metric from carbon-cache to carbon-aggregator? Who should be connecting to the port 2023/2024?

[vimau conf]$ cat aggregation-rules.conf 
stats.gauges.qps.widget.all.nginx.access (60) = sum stats.gauges.qps.widget.*.nginx.access
[vimau conf]$

My metric name is correct because i am able to see the whisper file properly (when i formulate the path by replacing '.'s with '/')
../storage/whisper/stats/gauges/qps/widget/domU-x.x.x.x_compute-1_internal/nginx/access.wsp
../storage/whisper/stats/gauges/qps/widget/ip-x.x.x.x_internal/nginx/access.wsp

[vimau conf]$ grep -v ^# carbon.conf  | grep -v '^$'
[cache]
GRAPHITE_ROOT  = /opt/graphite
STORAGE_DIR    = /opt/graphite/storage/
LOCAL_DATA_DIR = /opt/graphite/storage/whisper/
WHITELISTS_DIR = /opt/graphite/storage/lists/
CONF_DIR       = /opt/graphite/storage/conf/
LOG_DIR        = /opt/graphite/storage/log/
PID_DIR        = /opt/graphite/storage/
LOCAL_DATA_DIR = /opt/graphite/storage/whisper/
USER =
MAX_CACHE_SIZE = inf
MAX_UPDATES_PER_SECOND = 500
MAX_CREATES_PER_MINUTE = 50
LINE_RECEIVER_INTERFACE = 0.0.0.0
LINE_RECEIVER_PORT = 2003
ENABLE_UDP_LISTENER = False
UDP_RECEIVER_INTERFACE = 0.0.0.0
UDP_RECEIVER_PORT = 2003
PICKLE_RECEIVER_INTERFACE = 0.0.0.0
PICKLE_RECEIVER_PORT = 2004
USE_INSECURE_UNPICKLER = False
CACHE_QUERY_INTERFACE = 0.0.0.0
CACHE_QUERY_PORT = 7002
USE_FLOW_CONTROL = True
LOG_UPDATES = False
WHISPER_AUTOFLUSH = False
[relay]
LINE_RECEIVER_INTERFACE = 0.0.0.0
LINE_RECEIVER_PORT = 2013
PICKLE_RECEIVER_INTERFACE = 0.0.0.0
PICKLE_RECEIVER_PORT = 2014
RELAY_METHOD = rules
REPLICATION_FACTOR = 1
DESTINATIONS = 127.0.0.1:2004
MAX_DATAPOINTS_PER_MESSAGE = 500
MAX_QUEUE_SIZE = 10000
USE_FLOW_CONTROL = True
[aggregator]
LINE_RECEIVER_INTERFACE = 0.0.0.0
LINE_RECEIVER_PORT = 2023
PICKLE_RECEIVER_INTERFACE = 0.0.0.0
PICKLE_RECEIVER_PORT = 2024
DESTINATIONS = 127.0.0.1:2004
REPLICATION_FACTOR = 1
MAX_QUEUE_SIZE = 10000
USE_FLOW_CONTROL = True
MAX_DATAPOINTS_PER_MESSAGE = 500
MAX_AGGREGATION_INTERVALS = 5
[vimau conf]$ 

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