====== Zabbix ======
This guide is written when installing Zabbix V5.0.1. Terminology: //Host// and //Client// are equivalent, //Server// and //Zabbix server// are equivalent.

===== Repository =====
  * Install Zabbix repository<code># wget https://repo.zabbix.com/zabbix/5.0/debian/pool/main/z/zabbix-release/zabbix-release_5.0-1+buster_all.deb
# dpkg -i zabbix-release_5.0-1+buster_all.deb
# apt update</code>
  * Replace //buster// with //stretch// for Debian 9
===== Server Installation =====
  * Install Zabbix server, frontend, agent<code># apt install zabbix-server-mysql zabbix-frontend-php zabbix-apache-conf zabbix-agent</code>
  * Create initial database<code># mysql -uroot -p
password
mysql> create database zabbix character set utf8 collate utf8_bin;
mysql> create user zabbix@localhost identified by 'password';
mysql> grant all privileges on zabbix.* to zabbix@localhost;
mysql> quit;</code>
  * Import initial schema and data. You will be prompted to enter your newly created password.<code># zcat /usr/share/doc/zabbix-server-mysql*/create.sql.gz | mysql -uzabbix -p zabbix</code>
  * Configure the database for Zabbix server<code>sudo vim /etc/zabbix/zabbix_server.conf
DBPassword=password</code>
  * Configure PHP for Zabbix frontend, edit file /etc/zabbix/apache.conf, uncomment and set the right timezone for you.
  * Start Zabbix server and agent processes and make it start at system boot<code># systemctl restart zabbix-server zabbix-agent apache2
# systemctl enable zabbix-server zabbix-agent apache2</code>
  * See [[https://www.zabbix.com/download?zabbix=5.0&os_distribution=debian&os_version=10_buster&db=mysql&ws=apache|Install and configure Zabbix server for your platform]]

===== Server Configuration =====
  * Connect to your newly installed Zabbix frontend: http://server_ip_or_name/zabbix
  * Follow steps described in Zabbix [[https://www.zabbix.com/documentation/current/manual/installation/install#installing_frontend|documentation]]
  * In the last step you need to save the configuration.
    - Make /usr/share/zabbix/conf writeable for the apache2 user (www-data or bakuppc)
    - Rename the symbolic link then save the configuration
    - Move the configuration file to /etc/zabbix/web/
    - Rename back the symbolic link
    - If running under a default BackupPC installation change ownership of /etc/zabbix/web from www-data to backuppc

===== Apache Setup =====
  * If you run a separate server and want to make the web interface available, you need to setup a VirtualHost proxy on your main apache server. How this is done is described in [[deb9:apache#proxy|Apache 2.4 and PHP 7.4]]

===== Clients Installation =====
==== Debian 10 ====
=== Host ===
  * Install Zabbix agent<code># apt install zabbix-agent</code>
  * Modify /etc/zabbix/zabbix_agentd.conf:<code>#DenyKey=system.run[*]
Server=192.168.x.x
ServerActive=192.168.x.x
Hostname=<hostname> # must be identical to the one used in Zabbix server configuration
</code>
  * Start Zabbix agent process and make it start at system boot<code># systemctl start zabbix-agent
# systemctl enable zabbix-agent</code>
  * Allow port 10050 in the host firewall, e.g. [[deb9:ufw|UFW Firewall]]
  * Allow port 10051 in the inter-zone firewall (if host is on different subnet than server), e.g. host -> server, to allow active checks

=== Server ===
  * Create new host with interface //Agent// on IP address 192.168.x.x
  * Make sure the host name corresponds to //Hostname// in the configuration file of the host
  * Choose //Linux servers// as group
  * Choose //Template OS Linux by Zabbix agent// template under tab //templates//

==== Synology DSM6 ====
=== Host ===
  * Enable SNMPv2 and set community name in Control Panel -> Terminal & SNMP

=== Server ===
  * Create new host with interface //SNMP//
  * Import template {{ :deb10:zbx_export_synodiskstation_1.zip |xml}} file from [[https://share.zabbix.com/storage-devices/synology/synology-diskstation|Zabbix + Synology]]
  * Choose //Templates// as group
  * Choose //Template Synology DiskStation// template under tab //templates//
  * Set the {$SNMP_COMMUNITY} macro in host/macros tab

==== Windows 10 ====
=== Host ===
  * Download [[https://www.zabbix.com/download_agents|Zabbix agent]]. Unzip and move to a folder, e.g. C:\zabbix.
  * Modify C:\zabbix\conf\zabbix_agentd.conf:<code>#DenyKey=system.run[*]
Server=192.168.x.x
ServerActive=192.168.x.x
#Hostname=Windows host
HostnameItem=system.hostname # this is the Windows hostname, must be identical to the one used in Zabbix server configuration
</code>
  * Open a command prompt as administrator, start zabbix agent process and make it start at system boot<code>C:\> C:\zabbix\bin\zabbix_agentd.exe -c C:\zabbix\conf\zabbix_agentd.conf -i
C:\> C:\zabbix\bin\zabbix_agentd.exe -c C:\zabbix\conf\zabbix_agentd.conf -s</code>
  * Open Windows firewall, select //Change settings// then //Allow another app...//, and browse to the agent executable, e.g. C:\zabbix\bin\zabbix_agentd.exe. Add the app to the firewall.
=== Server ===
  * Create new host with interface //Agent//
  * Make sure the host name corresponds to //Hostname// in the configuration file of the host
  * Choose //Templates/Operating systems// as group
  * Choose //Template OS Windows by Zabbix agent// template under tab //templates//
=== Links ===
  * [[https://kb.iu.edu/d/avza#:~:text=From%20the%20Start%20menu%2C%20select,the%20machine%20without%20the%20domain.|how do I find my computer's hostname]]
  * [[https://www.tecmint.com/install-zabbix-agent-and-add-windows-host-to-zabbix-monioring/|How to Install Zabbix Agent and Add Windows Host to Zabbix Monitoring]]

===== Links =====
  * [[https://www.youtube.com/watch?v=jtLUGgMeh3E|How To Use ZABBIX Maps For Better Visualization]]