Connection Number; File Descriptor; Slot Number; Operation Number - Red Hat DIRECTORY SERVER 8.0 Command Reference Manual

5.1.2.1. Connection Number

Every external LDAP request is listed with an incremental connection number, in this case conn=11,
starting at conn=0 immediately after server startup.
[21/Apr/2007:11:39:51 -0700] conn=11 fd=608 slot=608 connection from 207.1.153.51 to
192.18.122.139
Internal LDAP requests are not recorded in the access log by default. To activate the logging of
internal access operations, specify access logging level 4 on the nsslapd-accesslog-level
configuration attribute (see

5.1.2.2. File Descriptor

Every connection from an external LDAP client to Directory Server requires a file descriptor or socket
descriptor from the operating system, in this case fd=608. fd=608 indicates that it was file descriptor
number 608 out of the total pool of available file descriptors which was used.
[21/Apr/2007:11:39:51 -0700] conn=11 fd=608 slot=608 connection from 207.1.153.51 to
192.18.122.139

5.1.2.3. Slot Number

The slot number, in this case slot=608, is a legacy part of the access log which has the same
meaning as file descriptor. Ignore this part of the access log.
[21/Apr/2007:11:39:51 -0700] conn=11 fd=608 slot=608 connection from 207.1.153.51 to
192.18.122.139

5.1.2.4. Operation Number

To process a given LDAP request, Directory Server will perform the required series of operations. For
a given connection, all operation request and operation result pairs are given incremental operation
numbers beginning with op=0 to identify the distinct operations being performed.
[21/Apr/2007:11:39:51 -0700] conn=11 op=0 RESULT err=0 tag=97 nentries=0 etime=0
Section 5.1.2, "Default Access Logging
In
result pair, then op=1 for the LDAP search request and result pair, and so on. The entry op=-1 in the
access log generally means that the LDAP request for this connection was not issued by an external
LDAP client but, instead, initiated internally.

5.1.2.5. Method Type

The method number, in this case method=128, indicates which LDAPv3 bind method was used by the
client.
[21/Apr/2007:11:39:51 -0700] conn=11 op=0 BIND dn="cn=Directory Manager" method=128 version=3
There are three possible bind method values:
• 0 for authentication
Section 2.3.1.2, "nsslapd-accesslog-level"
Content", we have op=0 for the bind operation request and
Default Access Logging Content
).
157