Netapp snmp

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Adding an SNMP traphost

You can use the System Manager to add a traphost (SNMP manager) to receive SNMP notifications (SNMP trap protocol data units) when traps are generated in the cluster.

Before you begin

IPv6 must be enabled on the cluster if you configure SNMP traphosts that have IPv6 addresses.

About this task

SNMP and SNMP traps are enabled by default. The NetApp Technical Report TR-4220 on SNMP support contains lists of all default events that are supported by SNMP traps.

NetApp Technical Report 4220: SNMP Support in Data ONTAP

Procedure

  1. In the SNMP window, click EDIT to open the Edit SNMP Settings dialog box.
  2. In the Trap Hosts tab, verify that the Enable traps check box is selected and click Add.
  3. Enter the traphost IP address, and then click OK in the Trap Hosts pane.

    The IP address of an SNMP traphost can be IPv4 or IPv6.


    This image shows the Edit SNMP Settings dialog box, Traphosts tab, in which the traphost status "enabled" is checked and the example traphost IP address "192.0.2.0" is entered.
  4. To add another traphost, repeat Steps 2 and 3.
  5. When you finish adding traphosts, click OK in the Edit SNMP Settings dialog box.
Sours: https://docs.netapp.com/ontap-9/topic/com.netapp.doc.exp-snmp-cg/GUID-8E8CB55B-D0DC-4C90-8145-9A205AE11855.html

Managing SNMP on the cluster (cluster administrators only)

You can configure SNMP to monitor SVMs in your cluster to avoid issues before they occur, and to respond to issues if they do occur. Managing SNMP involves configuring SNMP users and configuring SNMP traphost destinations (management workstations) for all SNMP events. SNMP is disabled by default on data LIFs.

You can create and manage read-only SNMP users in the data SVM. Data LIFs must be configured to receive SNMP requests on the SVM.

SNMP network management workstations, or managers, can query the SVM SNMP agent for information. The SNMP agent gathers information and forwards it to the SNMP managers. The SNMP agent also generates trap notifications whenever specific events occur. The SNMP agent on the SVM has read-only privileges; it cannot be used for any set operations or for taking a corrective action in response to a trap. Data ONTAP provides an SNMP agent compatible with SNMP versions v1, v2c, and v3. SNMPv3 offers advanced security by using passphrases and encryption.

For more information about SNMP support in clustered Data ONTAP systems, see TR-4220 on the NetApp Support Site at mysupport.netapp.com.

Sours: https://library.netapp.com/ecmdocs/ECMP1636021/html/GUID-F27D1018-C75A-4348-AE2D-22CAD940E719.html
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How to configure SNMP monitoring on DATA ONTAP

Answer

  • A brief introduction of Simple Network Management Protocol (SNMP) and SNMP traps in clustered Data ONTAP.
  • How to use SNMP to get information from C-Mode cluster systems?
  • How to configure SNMP traps and receive events on the desired clients?

Note: Refer to the following TR-Guide- SNMP Support in Data ONTAP 8.2.x and Data ONTAP 8.3.x

The purpose of this report is to help customers and NetApp field teams to understand the level of SNMP support in clustered Data ONTAP 8.2.x and clustered Data ONTAP 8.3.x. It also compares the OID availability for both 7mode and Cluster mode. It provides information at the individual table or group level only. The netapp.mib file provides additional information about the various fields or variables supported within a table or group. A MIB browser tool like iReasoning can be used to easily interpret the contents of the file. 

SNMP:

SNMP is a widely used network monitoring and control protocol. Data is passed from SNMP agents, which are hardware and/or software processes reporting activity in each network device (hub, router, or bridge) to the workstation console used to oversee the network. The agents return information contained in a Management Information Base (MIB), which is a data structure that defines what is obtainable from the device and what can be controlled (turned off or on). Originating in the UNIX community, SNMP has become widely used on all major platforms.
MIBs describe the structure of the management data of a device subsystem; they use a hierarchical namespace containing object identifiers (OID). Each OID identifies a variable that can be read or set via SNMP.

Note: NetApp does not support snmp-set operations. Also, SNMP-support is only cluster-wide and is not vserverized. However, this will be done in releases after 8.1 and is different from 7G vfilers, as snmp-support was never vfilerized.

 3010108__en_US__solutionskb60714_1.JPG

Enabling/Disabling SNMPs:

The SNMP protocol can be enabled and disabled on a cluster using CLIs/ZAPIs:

  • Enabling SNMP on a cluster using CLI - From ngsh, run on
  • Disabling SNMP on a cluster using CLI - From ngsh, run off
  • Enabling SNMP on a cluster using ZAPI - Using ontapi or zexplore.exe, run the
  • Disabling SNMP on a cluster using ZAPI - Using ontapi or zexplore.exe, run the

    Example:
    Note: SNMP protocol can be enabled or disabled only cluster-wide. SNMP to an individual node in a cluster is not possible in Data ONTAP 8.1 C-Mode .

7G-like SNMP UI:

The Data ONTAP C-Mode leverages a bunch of UIs (CLIs and ZAPIs) to configure the SNMP details on the cluster. Given below is a brief on each CLI that helps configure SNMP on a clustered system:

  • View or modify the contact details
  • View or modify the location details
  • Enables or disables traps sent out from the cluster [1-> enabled, 0->disabled]
  • Enables or disables authenticationFailure traps [1->enabled,0->disabled]
  • To view, add or delete the communities in the cluster, there will be a default 'public' community which is ro.
  • Note: Only readonly communities are supported. Also, in order to delete the first snmp community entry, the user needs to delete the traphost that is used for notification purposes.
  • To view, add or delete the traphosts in the cluster, all the traps (or events) that occur in the cluster are sent to these hosts when the hosts are running
  • Enables or disables snmp protocol on the cluster [on=>enabled, off=>disabled]

The following is a brief on each ZAPI that helps configure SNMP on a clustered Data ONTAP system:

  • Enables the snmp protocol on the cluster
  • Disables the snmp protocol on the cluster
  • Enables traps being sent out to the traphosts
  • Disables traps being sent out to the traphosts
  • Adds the snmp community. Only ro communities are supported in Data ONTAP 8.1 C-Mode
  • Deletes an existing community
  • Adds a traphost
  • Deletes an existing traphost
  • Gives the details of the snmp configuration on the cluster (Such as location, contact, traps, traphosts, communities details)
  • Reads the object value when a OID is given as input to the API (Similar to snmpget unix utility)
  • Reads the value of the object next to what is given as OID (Similar to snmpgetnext unix utility)
  • The contact and location details of the cluster can be added or modified using snmp CLI. There is no corresponding API for modifying the contact or location details. However, the cluster details can be read (cannot be modified using snmp or ZAPI) using snmp[walk|get|getnext] (or) snmp-status

Example:

Add/Modify using CLI :

Read using ZAPI call :

Read using snmp calls :

How to configure snmpv3 on C-Mode systems:

  • Create an snmpv3 user on the cluster using the security login create CLI.
  • Enter the EngineID (use the local EngineID, which is taken as default).
  • Enter the auth protocol and enter the password for the specified snmpv3 user.
  • Run the to the snmpv3 user, by specifying -v 3 and providing user credentials.

The appendix section in the PDF gives an example of how to create an snmpv3 user and run to the user.

SNMP Traps:

Asynchronous notification from the agent to manager: This includes current sysUpTime value, an OID identifying the type of trap, and optional variable bindings. Destination addressing for traps is determined in an application-specific manner, typically through trap configuration variables in the MIB. The format of the trap message was changed in SNMPv2 and the PDU was renamed SNMPv2-Trap.

3010108__en_US__solutionskb60714_2.JPG

SNMP and its traps in 7-Mode and C-Mode Data ONTAP:

3010108__en_US__solutionskb60714_3.JPG

Standard SNMP traps:

There are 5 standard SNMP traps, as per RFC 1215:

  • linkDown - This trap is generated on bringing down the active physical port, which is up (the ifAdminStatus should be changed from up to down/ The ifindex number information is not included in the trap message. )
  • linkUp - This trap will be generated when you bring up the physical port which is down (the ifAdminStatus should be changed from down to up/The ifindex number information is not included in the trap message. )
  • warmStart - A warmstart trap is generated when you do a normal reboot
  • coldStart - A coldStart trap signifies that the sending protocol entity is reinitializing itself in such a way that the agent's configuration or the protocol entity implementation may be altered
  • authenticationFailure - An authenticationFailure trap is generated when a user is trying to log in to the system using incorrect privileges

NetApp-built-in SNMP traps:

NetApp has a large number of built-in traps for the convenience of SNMP users. The file has a list of the built-in traps. Each trap has a unique identifier or trap code. An example of a built-in trap is volumeOnline and its trap code is 276. The information below is taken from the file.

The OID is followed by the NOTIFICATION-TYPE tag, which indicates that it is a trap and is associated with the description and trap-code, 276 in this case.

User-Defined SNMP traps:

These are traps that can be configured based on user requirements. Even though NetApp has some built-in traps, the user might still want to generate events for other reasons. 7-Mode has the infrastructure to support user-defined traps, but C-Mode infrastructure for Data ONTAP 8.1 does not support user-defined traps.These are the planned UIs (after Data ONTAP 8.1) that will help configure user-defined traps:

  • snmp-trap-list
  • snmp-trap-set
  • snmp-trap-delete
  • snmp-trap-reset
  • snmp-trap-load

Tie-in w/ EMS:

Traps are tied to EMS events. SNMP events can be generated using the event CLI as well.
All the traphosts that are added to the SNMP traphost list will get replicated to another table called the event destination table under the traphost entry.
                               

The following can be done using event * CLI:

A new SNMP host can be added using the event destination create CLI. When the host is added to the default traphost list, it gets replicated in the SNMP traphost list and all events that are triggered in the cluster will be sent out to this host.

However, if the user wants to configure a host to receive only particular events, the event route CLI can be used to route any event to that destination. To list the events, do the following:


Map the corresponding event to the Destination required.
Not all events are SNMP trap enabled. In order to know all the traps associated with snmp traps, use the following CLI :

SNMP traps - How to configure traps and generate events

Add the traphosts using the snmp traphost CLI:


-OR-


Note: Ensure that dns is configured on the cluster in order to resolve the traphost names. 

  1. Ensure that SNMP protocol is enabled on the filer:

  2. Enable SNMP traps on the cluster. This can be done in either of the following ways:       
                 
    Run the following command:

    -OR-
    Run the ZAPI :

  3. Trigger and monitor events.

info - reference: Burt # 460968

file is particularly for user-defined-traps. UDT support is not in Data ONTAP C-Mode as yet (as of Data ONTAP 8.1.1)

file has the extra 1 at the end to help differentiate between OIDs inside of tables and OIDs that end in 0 (outside of tables). OIDs inside of tables should not be trapped against, so the extra obfuscation actually helps to reduce invalid user-defined traps 

C-Mode OID info - reference: Burt # 460968 

The OIDs that are seen in the file are the keys and are not the actual absolute OID values. The best way to figure this out is by actually performing snmpwalk by dropping the last digit:

Example: 

  • [
  •  

It gives 5 different OIDs above (1026, 1030, 1034, 1038, 1050) and then perform the following:

    The detailed procedure of how to generate different types of traps/events is shown in the Appendix section below:

     

    Enable SNMP and run snmp utilities:

    Running on a cluster and also the config steps to do this

    Disable SNMP and run SNMP utilities:

    Disabling on a cluster and also the config steps to do this

    Add snmpv3 user and run snmp utilities:

    snmpv3 protocol is a secured protocol when compared to snmpv1|v2c; the followig steps are required to configure for an snmpv3 user and run the snmp tools
    Generate Netapp built-in SNMP traps:

    Netapp build-in traps are defined in the file; the following steps show how to generate them on to the traphosts or snmp destinations

    Generate traps using event generate CLI:

    One can use event generate CLI also to generate traps.


               

    Sours: https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/How_to_configure_SNMP_monitoring_on_DATA_ONTAP
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    What are the document references for SNMP articles?

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    Applies to

    • ONTAP EMS
    • ONTAP 9.x
    • Clustered Data ONTAP 8.3
    • Data ONTAP 8.2 7-Mode

    Answer

    This article contains a list of most SNMP operational and troubleshooting workflows. However, it is not a comprehensive list. This can be used to narrow your search to the more commonly utilized troubleshooting KBs, broken down to a specific category.

    Overview: What is SNMP?

    The Simple Network Management Protocol (SNMP) is an Internet-standard application-layer protocol for managing devices on IP networks. SNMP can be configured to monitor and manage storage systems and their functions. SNMP is supported by NetApp® storage systems running Data ONTAP® operating in 7-Mode as well as by NetApp® storage systems running clustered Data ONTAP®. SNMP is based on an agent/manager model.

    Differences between 7-Mode and clustered Data ONTAP support for SNMP

    The Netapp® custom MIB (netapp.mib) file is common for clustered Data ONTAP® and Data ONTAP® operating in 7-Mode, but there is a difference in the level of SNMP support for the two operating modes.

    For a table overview of the level of support offered for SNMP MIBs and SNMP traps in Data ONTAP® 8.2.x for both Data ONTAP® operating in 7-Mode and clustered Data ONTAP® plus what is available in 8.3.x and 9.0, see the following Technical report.
    TR-Guide: SNMP Support in Data ONTAP®

    Note: Certain objects are not supported for both ONTAP modes.
    SNMP tools might not function with clustered Data ONTAP

    Configuration Links:
    ONTAP

    SNMP Configuration Express Guide (8.3, 9.x)
    SNMP Management Guide (8.2 7-mode, 8.3, 9.x)
    System Manager SNMP Guide (8.2 7-mode, 8.3, 9.x)

    Starting with Data ONTAP 8.3, OnCommand System Manager is a bundled component of Data ONTAP, and its documentation is part of the Data ONTAP documentation set.

    Known issue in 9.x:  Using System manager to test the trap host configuration fails with

    'Data ONTAP API FAILED; not authorized for that command(error :13003)'

    BUG 1058259  - snmp-test-trap-trigger fails in ONTAP 9.0 and 9.1

    Note:Only the Test trap call from System Manager is affected. The configuration changes will apply in ONTAP.

    OnCommand Products

    OnCommand Unified Manager for Clustered Data ONTAP (7.2)
    OnCommand Workflow Automation (Link to versions)

    Frequently asked questions:

    What are the differences between a built-in trap and using SNMP objects OID to pull data?

    Built-in traps are predefined in Data ONTAP® and are automatically sent to the network management stations on the traphost list if an event occurs. These traps, such as diskFailedShutdown, cpuTooBusy, and volumeNearlyFull, are defined in the custom MIB. Each built-in trap is identified by a unique trap code.
     Basically, the NetApp built-in traps will not have an OID that you can use to perform an snmpget or snmpwalk.
     

    How to find EMS events that support SNMP?

    To view the EMS events that support SNMP, simply query the EMS catalog and leverage the snmp-support flag.
    To view the entire list:

     
    In the following example, a query is sent for EMS volume events that support SNMP traps.  

     

    Known Errors:

    Clustered ONTAP

    Resolution:

    Error when removing SNMP trap hosts on clustered Data ONTAP
     

    Resolution:

    The message indicates you have traphosts configured. When traphosts are first configured they are associated with the defualt snmpuser "public" per the default public comminuty string. 

    1. verify you have traphosts configured
    ::> system snmp 
    2. remove any trapshots (record the information in order to add them back if needed)
    ::> system snmp traphost delete -peer-address
    3. remove the Public community string
    ::>system snmp community delete -community-name public -type ro
    4. re add you trapshots
    ::>system snmp traphost add
     


    Resolution:
    Bug - 982104  - follow workaround 
    1. Remove all traphosts which will clear the database and add the current traphost.

    ::> System snmp traphost delete

    1. Add current traphosts

    ::> system snmp traphost add

    Additional Information

    additionalInformation_text

     

    NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.
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    Sours: https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/What_are_the_document_references_for_SNMP_articles%3F

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