共享石墨集群中两个节点的缓存中的指标

Question

I have a graphite cluster with 2 nodes under and ELB. Both of them share a same NFS to store the metrics.I didn't have a problem in accessing the metrics that are already written to the NFS.The problem arises in the case where node 1 have some metrics in its cache and have not written yet to the NFS and node 2 tries to access that metric.So one solution that I have in mind is to include the IP of both servers in local_setting.py

#########################
# Cluster Configuration #
#########################
#CLUSTER_SERVERS = ["10.x.x.1:80", "10.x.x.2:80"]

Is there any other way or a better solution to access the cache in node 1 from node 2 under the same ELB ?

Answer 1

Graphite is using files on the disk for resolving globs (eg '*') in metric names. If the metric is not yet written to disk - it will not be visible in Graphite. Adding CLUSTER_SERVERS will not help because they should be another graphite-web instances and not caches. You can add both caches to CARBONLINK_HOSTS , ie

CARBONLINK_HOSTS = ['10.xx1:7002','10.xx2:7002']

but I doubt that helps because of what I said above.