ZooKeeper¶
ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.
The Librato Agent allows you to easily monitor ZooKeeper’s health and performance. We use collectd’s native ZooKeeper plugin to gather metrics from your running ZooKeeper instance(s).
Installation¶
The ZooKeeper integration depends on the Librato Agent. If you haven’t already, you will first need to install the Librato Agent. Once this is complete, select the ZooKeeper icon in the integrations catalogue.
Toggle the Enabled switch to activate the ZooKeeper integration on your Librato account and create the preconfigured ZooKeeper Space.
At this point your integration is complete and any ZooKeeper metrics associated with this integration will be allowed through your Librato Agent service-side filters.
Plugin Configuration¶
By default, ZooKeeper listens on localhost port 2181. If necessary, this can
be adjusted in your /opt/collectd/etc/collectd.conf.d/zookeeper.conf file.
LoadPlugin zookeeper
<Plugin "zookeeper">
Host "127.0.0.1"
Port "2181"
</Plugin>
Note: You must restart the agent after any changes to your Librato Agent configuration files.
$ sudo service collectd restart
At this point you should begin seeing librato.zookeeper.* metrics in your Librato account.
ZooKeeper Workspace¶
Visit your preconfigured Space to observe your new metrics as they stream in. You can use our dynamic tags field at the top to filter your view to a subset of metrics.
Zookeeper Metrics and tags¶
The Zookeeper integration supports the following metrics and tags.
Note: All metrics are prefixed with librato.zookeeper..
| Tag Name | Description |
|---|---|
| host | Host name or IP address of monitored server |
Request statistics¶
| Description | Name | Tags |
|---|---|---|
| Average latency | latency.avg | host |
| Minimum latency | latency.min | host |
| Max Latency | latency.max | host |
| Number of outstanding requests | requests.outstanding | host |
| Number of packets sent | packets.sent | host |
| Number of packets received | packets.received | host |
| Approximate size of sent data in bytes | bytes.approximate_data_size | host |
Node statistics¶
| Description | Name | Tags |
|---|---|---|
| Total number of nodes | znodes | host |
| Total number of ephemeral nodes | emphemerals | host |
| Total number of follower, non-leader nodes | followers | host |
| Total number of follower nodes synced with the leader node | synced_followers | host |
FAQ¶
For specific answers to Librato Agent questions check out our Librato Agent FAQ.
Please let us know what you think about this integration. We would love to incorporate your feedback and any ideas you have on dashboard design into the ongoing development of our integrations.