6.0 HP X9320 Network Storage System Administrator Guide (AW542-96009, December 2011)

9 Using the Statistics tool
The Statistics tool reports historical performance data for the cluster or for an individual file serving
node. You can view data for the network, the operating system, file systems, memory, and block
devices. Statistics data is transmitted from each file serving node to the management console,
which controls processing and report generation.
Installing and configuring the Statistics tool
The Statistics tool has two parts:
• Manager process. This process runs on the active management console. It collects and
aggregates cluster-wide statistics from file serving nodes running the Agent process, and also
collects local statistics. The Manager generates reports based on the aggregated statistics and
collects reports from all file serving nodes. The Manager also controls starting and stopping
the Agent process.
• Agent process. This process runs on the file serving nodes. It collects and aggregates statistics
on the local system and generates reports from those statistics.
IMPORTANT: The Statistics tool uses remote file copy (rsync) to move statistics data from the
file serving nodes to the management console for processing, report generation, and display. To
use rsync, you will need to configure one-way shared ssh keys on all file serving nodes. See
“Configuring shared ssh keys” (page 65).
Installing the Statistics tool
The Statistics tool is installed automatically when X9000 Software is installed on the file serving
nodes. To install or reinstall the Statistics tool manually, use the following command:
ibrixinit –tt
NOTE: If the installation is not successful, check the /tmp/stats-install.log.
By default, installing the Statistics tool does not start the Statistics tool processes. See “Controlling
Statistics tool processes” (page 64) for information about starting and stopping the processes.
Enabling collection and synchronization
To enable collection and synchronization, complete the following steps on the active management
console node:
1. Configure password-less login. See “Configuring shared ssh keys” (page 65).
2. On the management console node, edit the /etc/hosts file, adding the node names and
IP addresses of all file serving nodes. For example:
# cat /etc/hosts
10.3.31.1 ibr-3-31-1
10.3.31.2 ibr-3-31-2
10.3.31.3 ibr-3-31-3
3. Set up synchronization between nodes. Run the following command on the active management
console node, specifying the node names of all file serving nodes:
/usr/local/ibrix/stats/bin/stmanage setrsync <node1_name> ...
<nodeN_name>
For example:
# stmanage setrsync ibr-3-31-1 ibr-3-31-2 ibr-3-31-3
56 Using the Statistics tool