https://bugs.openldap.org/show_bug.cgi?id=10228
--- Comment #5 from shaosong.li@salesforce.com --- Thanks,
The nfiles ulimit is set to 500000 for openldap service now.
cat /usr/lib/systemd/system/slapd.service # replace at path /usr/lib/systemd/system/slapd.service [Unit] Description=Symas OpenLDAP Server Daemon After=network-online.target Documentation=man:slapd Documentation=man:slapd-config Documentation=man:slapd-mdb
[Service] Type=notify LimitNOFILE=500000 Environment="SLAPD_URLS=ldaps://0.0.0.0:9443/ ldapi:///" "SLAPD_OPTIONS=" EnvironmentFile=-/etc/default/symas-openldap ExecStart=/opt/symas/lib/slapd -d 0 -h ${SLAPD_URLS} $SLAPD_OPTIONS Restart=always
ulimit -n 524288