fs.file-max = 65536

sysctl -p

cat /proc/sys/fs/file-max
65536

firebird     soft    nofile  1024 
firebird     hard    nofile  65536

session    required     pam_limits.so

if [ $USER = "firebird" ]; then
      ulimit -n 65536
fi

TryAddUser() {

	AdditionalParameter=$1
	testStr=`grep firebird /etc/passwd`
	
    if [ -z "$testStr" ]
      then
        useradd $AdditionalParameter -d /opt/firebird -s /bin/false \
            -c "Firebird Database Owner" -g firebird firebird 
    fi

}

grep -i 'firebird' /etc/passwd

man limits.conf

limits.conf - configuration file for the pam_limits module 
 

man 8 pam_limits

FILES
       /etc/security/limits.conf
           Default configuration file

EXAMPLES
       For the services you need resources limits (login for example) put a the following line in /etc/pam.d/login as the last line for that service (usually after the pam_unix session line):

           #%PAM-1.0
           #
           # Resource limits imposed on login sessions via pam_limits
           #
           session  required  pam_limits.so

ldd /bin/su 
        linux-vdso.so.1 =>  (0x00007fffc61ff000)
        libpam.so.0 => /lib64/libpam.so.0 (0x00007f36bc95c000)
        libpam_misc.so.0 => /lib64/libpam_misc.so.0 (0x00007f36bc758000)
        libc.so.6 => /lib64/libc.so.6 (0x00007f36bc3f9000)
        libaudit.so.0 => /lib64/libaudit.so.0 (0x00007f36bc1df000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007f36bbfdb000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f36bcd9f000)

usermod -s /bin/bash firebird

su - firebird

echo $0

ulimit -a | grep 'open files'

start)
	echo -n "Starting $FULLNAME "
	daemon --user=$FBRunUser "export FIREBIRD LD_LIBRARY_PATH; $MANAGER -pidfile $pidfile -start -forever"
	RETVAL=$?
	[ $RETVAL -eq 0 ] && touch /var/lock/subsys/$name
	echo
	;;

/opt/firebird/bin/fbmgr.bin -pidfile /var/run/firebird/defualt.pid -start -forever"

# finger firebird

# lsof > lsof.out (Вывод будет в lsof.out файле)
# lsof | wc -l

# cat /etc/sysctl.conf
# cat /etc/security/limits.conf
# cat /etc/pam.d/login

linux	/boot/vmlinuz-2.6.32-5-amd64 root=UUID=574c1dd4-3a17-44b0-8995-3d59845c65e8 ro quiet selinux=0
linux	/boot/vmlinuz-2.6.32-5-amd64 root=UUID=574c1dd4-3a17-44b0-8995-3d59845c65e8 ro single selinux=0

cd /var/lib/firebird
ls -Z

# grep -i 'firebird' /etc/passwd

# chown -R firebird: /opt/firebird

# chown firebird: /opt/firebird

# su - firebird
# pwd
# ulimit -n 10000
# ulimit -a | grep open

# su - firebird
# pwd
# ulimit -n 10000
# ulimit -a | grep open