User`s guide

IBM Lotus Notes, Domino, Domino Designer 8 Release Notes

The mechanism for overriding the default varies depending on how the Domino server is started. There

are 2 basic scenarios:

1. Domino is started from a login session

For this case, the default must be overridden by modifying the file /etc/security/limits.conf AND

insuring it is respected by the login. Edit /etc/security/limits.conf using root and add or modify the

lines:

domsrvr soft nofile 20000

domsrvr hard nofile 49152

where "domsrvr" is an example of the user id that will run the Domino server. Specify the UNIX user

name in the first column that is the owner of the notesdata directory specified during Domino

installation. If more than one Domino partition exists on the same Linux for System z platform, repeat

these lines for each user id. The "soft" value specifies the new default file descriptor limit (ulimit -n),

and the "hard" value specifies the maximum file descriptor limit that may be set by the user.

For SLES 8 and SLES 9

In order for these limits to be respected following logon, ensure the following line is in the appropriate

pam.d login file:

session required /lib/security/pam_limits.so

For RHEL 4

In order for these limits to be respected following logon, ensure the following line is in the appropriate

pam.d login file:

session required /lib64/security/pam_limits.so

For example, if ssh login is used, this line must appear in /etc/pam.d/sshd

If telnet is used, this line must appear in /etc/pam.d/login

If rlogin is used, this line must appear in /etc/pam.d/rlogin

The user id must login after the above changes are made and saved.

2. Domino is automatically started through /etc/init.d

The redbook "IBM Lotus Domino 6.5 for Linux on zSeries Implementation " discusses this procedure

in detail (Chapter 9, Section "Automating Domino startup and shutdown"). It is worth noting, however,

that /etc/security/limits.conf settings are NOT respected when Domino is automatically started by a

/etc/init.d script. Therefore, a line such as the following MUST appear in the "start" section of such a

script:

ulimit -n 20000

Warning: Always make /etc/security/limits.conf change ( 1. above) in addition to modification of the

"start" script. Otherwise, on the occasion that Domino is started from a login session, the file

descriptor limit will be inadequate.