I using Linux Mint 17.2 xfce (x64) and these are my steps in my settings.

echo "deb http://packages.netxms.org/debian/ wheezy main" > /etc/apt/sources.list.d/netxms.list
wget -q -O - http://packages.netxms.org/netxms.gpg | sudo apt-key add -
apt-cache search netxms*
sudo apt-get update
sudo apt-get install netxms-server netxms-server-mysql

mv /etc/nxagentd.conf-dist nxagentd.conf
mv /etc/netxmsd.conf-dist netxmsd.conf

gedit nxagentd.conf

MasterServers = 192.168.1.20
LogFile = /var/log/netxms
FileStore = /home/nx/files

mkdir -p /home/nx/files

sudo apt-get install software-properties-common
sudo apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xcbcb082a1bb943db
sudo add-apt-repository 'deb http://mirror.jmu.edu/pub/mariadb/repo/10.0/ubuntu trusty main'

sudo apt-get update
sudo apt-get install mariadb-server

gedit /etc/netxmsd.conf

DBDriver = mysql.ddr
DBServer = localhost
DBName = netxms
DBLogin = netxms
DBPassword = abcd1234
LogFailedSQLQueries = yes
LogFile = {syslog}

mysql -u root -p mysql
CREATE DATABASE netxms;
GRANT ALL ON netxms.* TO netxms@localhost IDENTIFIED BY 'abcd1234';
\q

nxdbmgr init /usr/share/netxms/sql/dbinit_mysql.sql
netxmsd

all successfully it loaded.
but I still can't access the web configuration
maybe I omitted a step.

Can you help me. I will appreciate it

Best regads!!!

PD: Sorry with my english, it's not my native lenguage