Zabbix

Zabbix

Zabbix is another monitoring system and runs on Linux and uses PHP and MySQL and can run on Apache Web Server

The install target is a CentOS 7 server

Get RPM

sudo rpm -ivh http://repo.zabbix.com/zabbix/3.2/rhel/7/x86_64/zabbix-release-3.2-1.el7.noarch.rpm

Pre requisites Install MariaDB,PHP,Apache web server

Then install Zabbix server and agent

sudo yum install zabbix-server-mysql zabbix-web-mysql
sudo yum install zabbix-agent

Goto mysql

mysql -uroot -p

First, create the Zabbix database with UTF-8 character support:

create database zabbix character set utf8;

Next, create a user that the Zabbix server will use, give it access to the new database, and set the password:

grant all privileges on zabbix.* to zabbix@localhost identified by 'your_password';

Then apply these new permissions

flush privileges;

Exit out of the database console.

quit;

Next we have to import the initial schema and data. The Zabbix installation provided us with a file that sets this up for us. We just have to import it. Navigate to the directory:

cd /usr/share/doc/zabbix-server-mysql-***

Run the following command to set up the schema and import the data into the zabbix database. We’ll use zcat since the data in the file is compressed.

zcat create.sql.gz | mysql -uzabbix -p zabbix

Enter the password for the zabbix user that you configured when prompted.

In order for the Zabbix server to use this database, you need to set the database password in the Zabbix server configuration file.

sudo vi /etc/zabbix/zabbix_server.conf
### Option: DBPassword                           
#       Database password. Ignored for SQLite.   
#       Comment this line if no password is used.
#                                                
# Mandatory: no                                  
# Default:                                       
# DBPassword=

Then enter the below in the browser

http://zabbix_server_ip_address/zabbix/

and configure the rest of the steps

For the agent

sudo rpm -ivh http://repo.zabbix.com/zabbix/3.2/rhel/7/x86_64/zabbix-release-3.2-1.el7.noarch.rpm

sudo yum install zabbix-agent

Set the Zabbix Server in the agent config file

sudo vi /etc/zabbix/zabbix_agentd.conf

restart zabbix-agent

sudo systemctl restart zabbix-agent
sudo systemctl status zabbix-agent
sudo systemctl enable zabbix-agent

In the agent config file zabbix_agentd.conf,set the following

Server=zabbixserverIPaddress

ServerActive=zabbixserveripaddress

Hostname=Zabbix server

Hostname of zabbix server will be in the front end in web admin and is not the hostname of the server.

Zabbix checks

net.tcp.service[ssh,,155]

0 is down
1 is up

create new item and add to template
create new trigger

TriggerName sshcheck on {HOST.NAME}

expression

{Template OS Linux:net.tcp.service[ssh,,22].last()}=0

Issues

Had issues on the zabbix client machine with the agent sending data and we have to either disable firewall or configure the firewall to allow zabbix port 10050.