OpenStack Object Storage can report on usage metrics by using the swift-recon middleware added to our object-server configuration. By using a tool, also named swift-recon, we can then query these collected metrics. The Collect Usage Statistics in OpenStack Object Storage Cluster will find you more ways.
How to Collect Usage Statistics in OpenStack Object Storage Cluster
1.Log into an OpenStack Object Storage node as well as the proxy server.
2.To collect usage statistics from our OpenStack Object Storage cluster, carry out the following steps:
- We first need to modify our /etc/swift/object-server.conf configuration file to include the swift-recon middleware, so that it looks similar to the following:
[DEFAULT] bind_ip=0.0.0.0 workers=2 [pipeline:main] pipeline=recon object-server [app:object-server] use=eggs:swift#object [object-replicator] [object-updater] [object-auditor] [filter:recon] use=egg:swift#recon recon_cache_path=/var/cache/swift
Once this is in place, we simply restart our object-server service, using SWIFT-INIT, as follows:
Now that the command is running, we can use the swift-recon tool on the proxy server to get usage statistics, as follows:
This will report on disk usage in our cluster.
swift-recon -d -z5
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This will report on disk usage in zone 5.
swift-recon -d -z5
will report on, the load average in our cluster.
swift-recon -l -z5
This will report on the load average of the nodes in zone 5.
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This will report on any quarantined containers, objects, and accounts in the cluster.
wift-recon -q -z5
This will report on this information just for zone 5.
Check for unmounted devices
This will check for any unmounted drives in our cluster.
swift-recon -z5 -u
This will do the same just for zone 5.
Check replication metrics
This will report on the replication status within our cluster.
swift-recon -r -z5
This will just perform this for nodes in zone 5.
We can perform all these actions with a single command to get all telemetry data back about our cluster, as follows:
We can just get this information for nodes within zone 5 by adding -z5 at the end, as follows:
swift-recon --all -z5
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Enabling Usage Statistics
To enable usage statistics within an OpenStack Object Storage, we add in the swift-recon middleware, so metrics are collected. We add this to the object server by adding the following lines to /etc/swift/object-server.conf, on each of our storage nodes:
With this in place and our object servers restarted, we can query this telemetry data by using the swift-recon tool. We can collect the statistics from the cluster as a whole, or from specific zones with the -z parameter.
Note that we can also collect all or multiple statistics by specifying the –all flag or appending multiple flags to the command line. For example, to collect a load average and replication statistics from our nodes in zone 5, we would execute the following command