Install Zabbix 3.4

Install Zabbix 3.4 which is an enterprise open source monitoring system.

It's possible to monitor not only Linux but Windows, Solaris, IBM AIX and others.

[1]	On this example, It based on that SELinux is Permissive or Disabled.

[2]	Install Apache httpd, refer to here.

[3]	Install PHP, refer to here.

[4]	Install MariaDB server, refer to here.

[5]	Install some other required packages and Zabbix repository.

[root@dlp ~]#  yum -y  install php-mysql php-gd php-xml php-bcmath  [root@dlp ~]#  yum -y  install http://repo.zabbix.com/zabbix/3.4/rhel/7/x86_64/zabbix-release-3.4-1.el7.centos.noarch.rpm

[6]	Install Zabbix server.

[root@dlp ~]#  yum -y  install zabbix-get zabbix-server-mysql zabbix-web-mysql zabbix-agent

[7]	Create a database for Zabbix.

[root@dlp ~]#  mysql -u root -p  Enter password:     Welcome to the MariaDB monitor.    Commands end with ; or \g.     Your MariaDB connection id is 10     Server version: 5.5.52-MariaDB MariaDB Server Copyright (c) 2000, 2016, Oracle, MariaDB   Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear   the current input statement. MariaDB [(none)]>  create database zabbix;  Query OK, 1 row affected   (0.00 sec) MariaDB [(none)]>  grant all privileges on zabbix.* to   zabbix@'localhost' identified by 'password';  Query OK, 0 rows affected   (0.00 sec) MariaDB [(none)]>  grant all privileges on zabbix.* to zabbix@'%'   identified by 'password';  Query OK, 0 rows affected   (0.00 sec) MariaDB [(none)]>  flush privileges;  Query OK, 0 rows affected   (0.00 sec) MariaDB [(none)]>  exit  Bye [root@dlp ~]#  cd /usr/share/doc/zabbix-server-mysql-*/  [root@dlp zabbix-server-mysql-3.4.0]#  gunzip create.sql.gz  [root@dlp zabbix-server-mysql-3.4.0]#  mysql -u root -p zabbix < create.sql  Enter password:

[8]	Configure and start Zabbix Server.

[root@dlp ~]#  vi /etc/zabbix/zabbix_server.conf # line 90: add DBHost=localhost # line 124: add DB password for Zabbix DBPassword=password [root@dlp ~]#  systemctl start  zabbix-server  [root@dlp ~]#  systemctl enable  zabbix-server

[9]	If Firewalld is running, allow Zabbix related ports.

[root@dlp ~]#  firewall-cmd --add-service={http,https}  --permanent  success [root@dlp ~]#  firewall-cmd --add-port={10051/tcp,10050/tcp}  --permanent  success [root@dlp ~]#  firewall-cmd --reload  success

[10]	Configure and start Zabbix Agent to monitor Zabbix Server itself.

[root@dlp ~]#  vi /etc/zabbix/zabbix_agentd.conf # line 97: specify Zabbix server Server= 127.0.0.1 # line 138: specify Zabbix server ServerActive= 127.0.0.1 # line 147: change to the own hostname Hostname= dlp.srv.world [root@dlp ~]#  systemctl start  zabbix-agent  [root@dlp ~]#  systemctl enable  zabbix-agent

[11]	Change httpd settings like follows.

[root@dlp ~]#  vi /etc/httpd/conf.d/zabbix.conf # line 10: add access permittion for Zabbix Web  frontend # Require all granted Require ip 127.0.0.1 10.0.0.0/24 # line 19: uncomment and change to your timezone php_value  date.timezone  Asia/Tokyo [root@dlp ~]#  systemctl restart  httpd

Zabbix 3.4 : Initial Setup

This is the Initial Setup for Zabbix server.

[1]	Access to the [http://(Zabbix server's hostname or IP address)/zabbix/] from a client which is in the network allowed by Zabbix server. Then, Zabbix start page is displayed, Click [Next step] to proceed.

[2]	Make sure all items are [OK], then proceed to next.

[3]	This is the databse settings section. Change the default setting on [User] field to [zabbix] and input DB password for it.

[4]	This is the connection settings to Zabbix server. If it's local one, it's OK with keeping default. But It had better to change [Name] field to any name you like.

[5]	This is the confirmation of previous settings, proceed to next if all is OK.

[6]	Click [Finish] to complete initial setup.

[7]	This is the login page. It's possible to login with the username [admin], initial password [zabbix].

[8]	Just logined. This is the index of Zabbix administration site.

Zabbix 3.4 : Change admin password

Change admin password first. And also set admin email address for notifications.

[1]	Login to Zabbix admin site with admin user and click the human-icon which is on the upper-right.

[2]	Click [Change Password].

[3]	Input a password you'd like to change and click [Update] to change password. By the way, this example is English displayed but if you'd like to change display language, it's possible to select it on [Language] field.

[4]	Come to the [Profile] screen again and move to [Media] tab and click [Add] button.

[5]	Input an admin email address and click [Add] button.

[6]	Click [Update] button to finish.

Zabbix 3.4 : Set Monitoring Target Host

Set Monitoring Target Host.

[1]	Login to Zabbix admin site with admin user and click [Configuration] - [Hosts]. The localhost which Zabbix Agent has been installed is displayed like follows, check a box on it and click [Enable] button.

[2]	The [Status] is turned to [enabled] and the server is monitored.

[3]	After few miniutes later, monitoring data is collected like follows. The following screen is on [Monitoring] - [Screens].

Zabbix 3.4 : Set SMTP for Notifications

Set SMTP server to send mail notifications.

[1]	Login to Zabbix admin site with admin user and move to [Administration] - [Media Types] tab and then, click [Email] button.

[2]	Set SMTP server's info you'd like to use like follows and click [Update] button.

[3]	Make sure SMTP server is normally changed on Details field.

Zabbix 3.4 : Notification email setting

Many items are configured on the defaults' template but it's not set to send notifications by default, so set it like follows.

[1]	Set Zabbix admin's email address, and Set SMTP server setting first.
[2]	Login to Zabbix admin site with admin user and move to [Configuration] - [Actions] tab. An action which notifications are sent is defined by default like follows, so click [Disabled] to turn [Enabled].

[3]	Notifications are enabled. Default recipients is just the Zabbix admin group.

[4]	If a value is over from a value set as a threshold, a notification is sent like following example.

From [email protected]  Fri Aug 25 18:05:01 2017     Return-Path:     X-Original-To: root@localhost     Delivered-To: [email protected]     From:     To:     Date: Fri, 25 Aug 2017 19:05:01 +0900     Subject: Problem: Zabbix agent on Zabbix server is unreachable for 5   minutes     Content-Type: text/plain; charset="UTF-8"     Status: R Problem started at 19:05:00 on 2017.08.25     Problem name: Zabbix agent on Zabbix server is unreachable for 5   minutes     Host: Zabbix server     Severity: Average Original problem ID: 18

[5]	To click the action name, it can see details.

[6]	It's possible to edit notification messages on [Operations] tab.

[7]	It's possible to edit recovery messages on [Recovery Operations] tab.