The following procedure adjusts some network and system settings to optimize performance.
Setup coreadm with the following commands:
mkdir -p /var/crash/cores coreadm -g /var/crash/cores/%f.%n.%p.core -e global -e global-setid -e log -i /var/crash/cores/core.%f.%p.%n.%u.%g.%t -e process -e proc-setid |
Setup a cron job to regularly purge old core files:
0 5 * * * find /var/crash/cores -mtime +7 -type f -exec rm {} \; |
Make sure the /etc/hosts file contain hostname resolutions of all BE and FE servers:
set ncsize=4194304 set ufs_ninode=8388608 |
Tune the network settings for LDAP access on the servers in the mail clusters:
ndd -set /dev/tcp tcp_conn_req_max_q 4096 ndd -set /dev/tcp tcp_keepalive_interval 600000 ndd -set /dev/tcp tcp_ip_abort_cinterval 10000 ndd -set /dev/tcp tcp_ip_abort_interval 60000 |
Make these changes permanent by adding the above four configuration commands to the bottom of the /etc/init.d/inetinit file.
If desired, run the Sun Security Weakness Attack Tool (SunSWAT) to audit network vulnerabilities:
/opt/NSGswat/bin/sunswat -s isss |