SNMP can be used to monitor cluster hardware and system information. Settings can be configured through either the web administration interface or the command-line interface.
You can enable SNMP monitoring on individual nodes in the cluster, and you can monitor information cluster-wide from any node when you enable SNMP on each node. When using SNMP on an Isilon cluster, you should use a fixed general username. A password for the general user can be configured in the web administration interface.
You should configure a network monitoring system (NMS) to query each node directly through a static IP address. This approach allows you to confirm that all nodes have
external IP addresses and therefore respond to SNMP queries. Because the SNMP proxy is enabled by default, the SNMP implementation on each node is configured
automatically to proxy for all other nodes in the cluster except itself. This proxy
configuration allows the Isilon Management Information Base (MIB) and standard MIBs to be exposed seamlessly through the use of context strings for supported SNMP versions. After you download and save the appropriate MIBs, you can configure SNMP monitoring through either the web administration interface or though the command-line interface.
Configure the cluster for SNMP monitoring
You can configure your EMC Isilon cluster to remotely monitor hardware components using SNMP.
Before you begin
When SNMP v3 is used, OneFS requires the SNMP-specific security level of AuthNoPriv as the default value when querying the cluster. The security level AuthPriv is not supported. You can enable or disable SNMP monitoring, allow SNMP access by version, and
configure other settings, some of which are optional. All SNMP access is read-only. Note
The Isilon cluster does not generate SNMP traps unless you configure an event notification rule to send events.
Procedure
1. Click Cluster Management > General Settings > SNMP Monitoring.
2. In the Service area of the SNMP Monitoring page, enable or disable SNMP monitoring. a. To disable SNMP monitoring, click Disable, and then click Submit.
b. To enable SNMP monitoring, click Enable, and then continue with the following steps to configure your settings.
3. In the Downloads area, click Download for the MIB file that you want to download. Follow the download process that is specific to your browser.
4. (Optional) If you are using Internet Explorer as your browser, right-click the Download link, select Save As from the menu, and save the file to your local drive.
You can save the text in the file format that is specific to your Net-SNMP tool. 5. Copy MIB files to a directory where your SNMP tool can find them, such as /usr/
share/snmp/mibs/ or /usr/local/share/snmp/mibs, depending on the SNMP tool that you use.
To have Net-SNMP tools read the MIBs to provide automatic name-to-OID mapping, add -m All to the command, as in the following example: snmpwalk -v2c -c public -m All <node IP> isilon
6. Navigate back to the SNMP Monitoring page and configure General Settings. a. In the Settings area, configure protocol access by selecting the version that you
want.
OneFS does not support writable OIDs; therefore, no write-only community string setting is available.
b. In the System location field, type the system name.
This setting is the value that the node reports when responding to queries. Type a name that helps to identify the location of the node.
c. Type the contact email address in the System contact field.
7. (Optional) If you selected SNMP v1/v2 as your protocol, locate the SNMP v1/v2c Settings section and type the community name in the Read-only community field. The default community name is I$ilonpublic.
Note
OneFS no longer supports SNMP v1. Although an option for v1/v2c may be displayed, if you select the v1/v2c pair, OneFS will only monitor through SNMP v2c.
8. Configure SNMP v3 Settings.
a. In the Read-only user field, type the SNMP v3 security name to change the name of the user with read-only privileges.
The default read-only user is general.
The password must contain at least eight characters and no spaces.
b. In the SNMP v3 password field, type the new password for the read-only user to set a new SNMP v3 authentication password.
The default password is password. We recommend that you change the password to improve security.
c. Type the new password in the Confirm password field to confirm the new password.
9. Click Submit.
View SNMP settings
You can review SNMP monitoring settings. Procedure
1. Click Cluster Management > General Settings > SNMP Monitoring.
Events and notifications
You can monitor the health and performance of your EMC Isilon cluster through OneFS event notifications.
When OneFS identifies an occurrence on your cluster that may require additional attention, an event is generated. OneFS records events related to file system integrity, network connections, hardware, and other vital components of your cluster.
You can select the events that you want to monitor, and you can cancel, quiet, or unquiet events.
In addition, you can configure event notification rules to determine who receives a notification when an event occurs.