How To Install Zabbix Proxy On CentOS

Zabbix proxy is the way to have multiple hosts from different sites monitor by one central server

*. Zabbix-proxy should be in the same version of the main server !

*. SElinux is a great security addition but if you want to disabled it : nano /etc/selinux/config ->   SELINUX=disabled (will disable the SElinux) .

Install Zabbix-Proxy

First update the repo files in order to get the latest version, in this example 3.4 :

rpm --import http://repo.zabbix.com/RPM-GPG-KEY-ZABBIX
rpm -ivh http://repo.zabbix.com/zabbix/4.0/rhel/7/x86_64/zabbix-release-4.0-1.el7.noarch.rpm

On CentOS 8 you might get error regarding libssh2 missing, you can install it in this way:

To use libssh2 you must enable the EPEL repo. After that libssh2-devel can be installed

yum install epel-release

yum install libssh2

In case of develop environment you can install the libssh2-devel

yum install libssh2-devel

Then install the zabbix proxy

yum install zabbix-proxy-mysql

After that install maria-db (mysql server if you haven’t done this from the Linux installer already).

yum install mariadb-server

Enable the server and make the service run with boot :

systemctl enable mariadb && systemctl start mariadb

Lets start MariaDB installation, enter the password for SQL administrator (none if you run it for the first time,Then choose password) :

mysql_secure_installation
mysql -u root -p

We will create Database called: zabbix_proxy

create database zabbix_proxy;

Lets create user for the Database=zabbix_user and the password=zabbix

grant all privileges on zabbix_proxy.* to zabbix_user@localhost identified by 'zabbix' ;
flush privileges;
exit

Then import initial schema and data. Make sure to insert correct version for 3.4.X. You will be prompted to enter your newly created password.the script are here:

/usr/share/doc/zabbix-server-mysql-3.4.x, zabbix_user=username , zabbix_proxy=database_name , -p=password (in our case ‘zabbix’) :

zcat /usr/share/doc/zabbix-proxy-mysql-4.0.1/schema.sql.gz | mysql -u zabbix_user zabbix_proxy -p

configuring Zabbix proxy

nano /etc/zabbix/zabbix_proxy.conf

The values in the file should be corresponding with this setting according to this example:

Server=<IP of your zabbix server>
Hostname=<Name of your proxy>
DBName=zabbix_proxy
DBUser=zabbix_user
DBPassword=zabbix

We need to open the firewall port for network comunication :

firewall-cmd --permanent --add-port=10050/tcp
firewall-cmd --permanent --add-port=10051/tcp
firewall-cmd --reload

And the last thing is to enable the zabbix proxy and make it load with boot :

systemctl enable zabbix-proxy
systemctl start zabbix-proxy

Now Follow the zabbix proxy log to make sure all is well :

cat /var/log/zabbix/zabbix_proxy.log

You can also make sure the server running with this :

netstat -anp | grep zabbix_proxy

Configure Zabbix Proxy on Main Server

• Go to: Administration → Proxies
• Click on Create proxy

Active mode -> the proxy will be the one connecting to server and send data.

Passive mode -> the server will be the one connecting to server and get data.

proxy hosts -> is the server you want to monitor through the proxy server

You can also set encryption communication (recommended)