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21.5. Using the Management Information Base

The Directory Server's MIB is a file called redhat-directory.mib. This MIB contains definitions for variables pertaining to network management for the directory. These variables are known as managed objects. Using the directory MIB and Net-SNMP, you can monitor your directory like all other managed devices on your network. For more information on using the MIB, see Section 21.3, “Setting up an SNMP Agent for Directory Server”.
The client tools need to load the Directory Server MIB to use the variable names listed in the following sections.
Using the directory MIB enables administrators to use SNMP to see administrative information about the directory and monitor the server in real-time. The directory MIB is broken into four distinct tables of managed objects:

Note

All of the Directory Server attributes monitored by SNMP use 64-bit integers for the counters, even on 32-bit systems.

21.5.1. Operations Table

The Operations Table provides statistical information about Directory Server access, operations, and errors. Table 21.1, “Operations Table: Managed Objects and Descriptions” describes the managed objects stored in the Operations Table of the redhat-directory.mib file.

Table 21.1. Operations Table: Managed Objects and Descriptions

Managed Object Description
dsAnonymousBinds The number of anonymous binds to the directory since server startup.
dsUnauthBinds The number of unauthenticated binds to the directory since server startup.
dsSimpleAuthBinds The number of binds to the directory that were established using a simple authentication method (such as password protection) since server startup.
dsStrongAuthBinds The number of binds to the directory that were established using a strong authentication method (such as TLS or a SASL mechanism like Kerberos) since server startup.
dsBindSecurityErrors The number of bind requests that have been rejected by the directory due to authentication failures or invalid credentials since server startup.
dsInOps The number of operations forwarded to this directory from another directory since server startup.
dsReadOps The number of read operations serviced by this directory since application start. The value of this object will always be 0 because LDAP implements read operations indirectly using the search operation.
dsCompareOps The number of compare operations serviced by this directory since server startup.
dsAddEntryOps The number of add operations serviced by this directory since server startup.
dsRemoveEntryOps The number of delete operations serviced by this directory since server startup.
dsModifyEntryOps The number of modify operations serviced by this directory since server startup.
dsModifyRDNOps The number of modify RDN operations serviced by this directory since server startup.
dsListOps The number of list operations serviced by this directory since server startup. The value of this object will always be 0 because LDAP implements list operations indirectly using the search operation.
dsSearchOps The total number of search operations serviced by this directory since server startup.
dsOneLevelSearchOps The number of one-level search operations serviced by this directory since server startup.
dsWholeSubtreeSearchOps The number of whole subtree search operations serviced by this directory since server startup.
dsReferrals The number of referrals returned by this directory in response to client requests since server startup.
dsSecurityErrors The number of operations forwarded to this directory that did not meet security requirements.
dsErrors The number of requests that could not be serviced due to errors (other than security or referral errors). Errors include name errors, update errors, attribute errors, and service errors. Partially serviced requests will not be counted as an error.

21.5.2. Entries Table

The Entries Table provides information about the contents of the directory entries. Table 21.2, “Entries Table: Managed Objects and Descriptions” describes the managed objects stored in the Entries Table in the redhat-directory.mib file.

Table 21.2. Entries Table: Managed Objects and Descriptions

Managed Object Description
dsMasterEntries The number of directory entries for which this directory contains the master entry. The value of this object will always be 0 (as no updates are currently performed).
dsCopyEntries The number of directory entries for which this directory contains a copy.The value of this object will always be 0 (as no updates are currently performed).
dsCacheEntries The number of entries cached in the directory.
dsCacheHits The number of operations serviced from the locally held cache since application startup.
dsSlaveHits The number of operations that were serviced from locally held replications (shadow entries). The value of this object will always be 0.

21.5.3. Entity Table

The Entity Table contains identifying information about the Directory Server instance. The values for the Entity Table are set in the Directory Server Console, as described in Section 21.2, “Configuring the Directory Server for SNMP”.
Table 21.3, “Entity Table: Managed Objects and Descriptions” describes the managed objects stored in the Entity Table of the redhat-directory.mib file.

Table 21.3. Entity Table: Managed Objects and Descriptions

Managed Object Description
dsEntityDescr The description set for the Directory Server instance.
dsEntityVers The Directory Server version number of the Directory Server instance.
dsEntityOrg The organization responsible for the Directory Server instance.
dsEntityLocation The physical location of the Directory Server instance.
dsEntityContact The name and contact information for the person responsible for the Directory Server instance.
dsEntityName The name of the Directory Server instance.

21.5.4. Interaction Table

Note

The Interaction Table is not supported by the subagent. The subagent can query the table, but it will not ever be updated with valid data.
Table 21.4, “Interaction Table: Managed Objects and Descriptions” describes the managed objects stored in the Interaction Table of the redhat-directory.mib file.

Table 21.4. Interaction Table: Managed Objects and Descriptions

Managed Object Description
dsIntTable Details, in each row of the table, related to the history of the interaction of the monitored Directory Servers with their respective peer Directory Servers.
dsIntEntry The entry containing interaction details of a Directory Server with a peer Directory Server.
dsIntIndex Part of the unique key, together with applIndex, to identify the conceptual row which contains useful information on the (attempted) interaction between the Directory Server (referred to by applIndex) and a peer Directory Server.
dsName The distinguished name (DN) of the peer Directory Server to which this entry belongs.
dsTimeOfCreation The value of sysUpTime when this row was created. If the entry was created before the network management subsystem was initialized, this object will contain a value of zero.
dsTimeOfLastAttempt The value of sysUpTime when the last attempt was made to contact this Directory Server. If the last attempt was made before the network management subsystem was initialized, this object will contain a value of zero.
dsTimeOfLastSuccess The value of sysUpTime when the last attempt made to contact this Directory Server was successful. This entry will have a value of zero if there have been no successful attempts or if the last successful attempt was made before the network management subsystem was initialized.
dsFailuresSinceLastSuccess The number of failures since the last time an attempt to contact this Directory Server was successful. If there has been no successful attempts, this counter will contain the number of failures since this entry was created.
dsFailures Cumulative failures since the creation of this entry.
dsSuccesses Cumulative successes since the creation of this entry.
dsURL The URL of the Directory Server application.