Red Hat 8.1 User Manual download pdf (Page 233)

Chapter 5.

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Log File Reference

Red Hat Directory Server (Directory Server) provides logs to help monitor directory activity. Monitoring

helps quickly detecting and remedying failures and, where done proactively, anticipating and resolving

potential problems before they result in failure or poor performance. Part of monitoring the directory

effectively is understanding the structure and content of the log files.

This chapter does not provide an exhaustive list of log messages. However, the information presented

in this chapter serves as a good starting point for common problems and for better understanding the

information in the access, error, and audit logs.

Logs are kept per Directory Server instances and are located in the /var/log/dirsrv/

slapd-instance_name directory.

5.1. Access Log Reference

The Directory Server access log contains detailed information about client connections to the directory.

A connection is a sequence of requests from the same client with the following structure:

• Connection record, which gives the connection index and the IP address of the client.

• Bind record.

• Bind result record.

• Sequence of operation request/operation result pairs of records (or individual records in the case of

connection, closed, and abandon records).

• Unbind record.

• Closed record.

Every line begins with a timestamp — [21/Apr/2009:11:39:51 -0700] — the format of which

may vary depending on the platform. -0700 indicates the time difference in relation to GMT. Apart

from the connection, closed, and abandon records, which appear individually, all records appear

in pairs, consisting of a request for service record followed by a result record. These two records

frequently appear on adjacent lines, but this is not always the case.

The access logs have different levels of logging, set in the nsslapd-accesslog-level attribute.

This section provides an overview of the default access logging content, log levels, and the content

logged at different logging levels.

• Section 5.1.1, “Access Logging Levels”

• Section 5.1.2, “Default Access Logging Content”

• Section 5.1.3, “Access Log Content for Additional Access Logging Levels”

NOTE

Directory Server provides a script which can analyze access logs to extract usage

statistics and count the occurrences of significant events. For details about this script,

see the logconv.pl

section.

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Red Hat 8.1 User Manual Page 233