Zabbix Documentation 3.4

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manual:installation:install_from_packages:rhel_centos

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manual:installation:install_from_packages:rhel_centos [2018/09/11 04:57]
manual:installation:install_from_packages:rhel_centos [2018/09/11 08:16] (current)
dimir [Zabbix frontend configuration] add php value max_input_vars
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 +==== 1 Red Hat Enterprise Linux/​CentOS ====
 +
 +=== Overview ===
 +
 +Official Zabbix packages are available for RHEL 7, CentOS 7 and Oracle Linux 7. In this documentation we will refer to all 3 using the term ''​RHEL''​.
 +
 +Some agent and proxy packages are available for [[https://​repo.zabbix.com/​zabbix/​3.4/​rhel/​6/​x86_64/​|RHEL 6]] and [[https://​repo.zabbix.com/​zabbix/​3.4/​rhel/​5/​x86_64|RHEL 5]] as well.
 +
 +=== Adding Zabbix repository ===
 +
 +Install the repository configuration package. This package contains yum (software package manager) configuration files.
 +
 +RHEL 7:
 +
 +  # rpm -ivh https://​repo.zabbix.com/​zabbix/​3.4/​rhel/​7/​x86_64/​zabbix-release-3.4-2.el7.noarch.rpm
 +
 +RHEL 6:
 +
 +  # rpm -ivh https://​repo.zabbix.com/​zabbix/​3.4/​rhel/​6/​x86_64/​zabbix-release-3.4-1.el6.noarch.rpm
 +
 +RHEL 5:
 +
 +  # rpm -ivh https://​repo.zabbix.com/​zabbix/​3.4/​rhel/​5/​x86_64/​zabbix-release-3.4-1.noarch.rpm
 +
 +=== Frontend installation prerequisites ===
 +
 +Zabbix frontend requires additional packages not available in basic installation. You need to enable repository of optional rpms in the system you will run Zabbix frontend on:
 +
 +RHEL 7:
 +
 +  # yum-config-manager --enable rhel-7-server-optional-rpms
 +
 +=== Server/​proxy/​frontend installation ===
 +
 +To install Zabbix server (available for RHEL 7, [[manual/​installation/​install_from_packages/​rhel_centos#​zabbix_frontend_and_server_on_rhel_6|deprecated on RHEL 6]]) with MySQL support:
 +
 +  # yum install zabbix-server-mysql
 +
 +To install Zabbix proxy with MySQL support:
 +
 +  # yum install zabbix-proxy-mysql
 +
 +To install Zabbix frontend (available for RHEL 7, [[manual/​installation/​install_from_packages/​rhel_centos#​zabbix_frontend_and_server_on_rhel_6|deprecated on RHEL 6]]) with MySQL support:
 +
 +  # yum install zabbix-web-mysql
 +
 +Substitute '​mysql'​ in the commands with '​pgsql'​ to use PostgreSQL, or with '​sqlite3'​ to use SQLite3 (proxy only).
 +
 +=== Creating database ===
 +
 +For Zabbix [[manual:​concepts:​server|server]] and [[manual:​concepts:​proxy|proxy]] daemons a database is required. It is not needed to run Zabbix [[manual:​concepts:​agent|agent]]. ​
 +
 +<note warning>​If Zabbix server and proxy are installed on the same host, their databases must be created with different names!</​note>​
 +
 +Create the database using the provided instructions for [[manual:​appendix:​install:​db_scripts#​mysql|MySQL]] or [[manual:​appendix:​install:​db_scripts#​postgresql|PostgreSQL]].
 +
 +=== Importing data ===
 +
 +Now import initial schema and data for the server with MySQL:
 +
 +  # zcat /​usr/​share/​doc/​zabbix-server-mysql*/​create.sql.gz | mysql -uzabbix -p zabbix
 +
 +You will be prompted to enter your newly created database password.
 +
 +With PostgreSQL:
 +
 +  # zcat /​usr/​share/​doc/​zabbix-server-pgsql*/​create.sql.gz | sudo -u <​username>​ psql zabbix
 +
 +For proxy, import initial schema:
 +
 +  # zcat /​usr/​share/​doc/​zabbix-proxy-mysql*/​schema.sql.gz | mysql -uzabbix -p zabbix
 +
 +For proxy with PostgreSQL (or SQLite):
 +
 +  # zcat /​usr/​share/​doc/​zabbix-proxy-pgsql*/​schema.sql.gz | sudo -u <​username>​ psql zabbix
 +  # zcat /​usr/​share/​doc/​zabbix-proxy-sqlite3*/​schema.sql.gz | sqlite3 zabbix.db
 +
 +=== Configure database for Zabbix server/​proxy ===
 +
 +Edit zabbix_server.conf or zabbix_proxy.conf to use the created database. For example:
 +
 +  # vi /​etc/​zabbix/​zabbix_server.conf
 +  DBHost=localhost
 +  DBName=zabbix
 +  DBUser=zabbix
 +  DBPassword=<​password>​
 +
 +In DBPassword use Zabbix database password for MySQL; PosgreSQL user password for PosgreSQL.
 +
 +Use ''​DBHost=''​ with PostgreSQL. You might want to keep the default setting ''​DBHost=localhost''​ (or an IP address), but this would make PostgreSQL use a network socket for connecting to Zabbix. See **SELinux configuration** below for instructions.
 +
 +=== Starting Zabbix server process ===
 +
 +It's time to start Zabbix server process:
 +
 +  # service zabbix-server start
 +
 +and make it start at system boot:
 +
 +RHEL 7 and later:
 +  # systemctl enable zabbix-server
 +
 +RHEL prior to 7:
 +  # chkconfig --level 12345 zabbix-server on
 +
 +Substitute '​zabbix-server'​ with '​zabbix-proxy'​ if you are installing Zabbix proxy.
 +
 +=== Zabbix frontend configuration ===
 +
 +For RHEL 7 and later the Apache configuration file for Zabbix frontend is located in /​etc/​httpd/​conf.d/​zabbix.conf.
 +
 +If you use RHEL 6 please read the section about [[manual/​installation/​install_from_packages/​rhel_centos#​zabbix_frontend_and_server_on_rhel_6|using Zabbix frontend on RHEL 6]] on how to configure the frontend.
 +
 +Some PHP settings are already configured. But it's necessary to uncomment the "​date.timezone"​ setting and [[http://​php.net/​manual/​en/​timezones.php|set the right timezone]] for you.
 +
 +  php_value max_execution_time 300
 +  php_value memory_limit 128M
 +  php_value post_max_size 16M
 +  php_value upload_max_filesize 2M
 +  php_value max_input_time 300
 +  php_value max_input_vars 10000
 +  php_value always_populate_raw_post_data -1
 +  # php_value date.timezone Europe/Riga
 +
 +Now you are ready to proceed with [[manual/​installation/​install#​installing_frontend|frontend installation steps]] which will allow you to access your newly installed Zabbix.
 +
 +<​note>​Zabbix official repository provides fping, iksemel, libssh2 packages as well. These packages are located in the //​[[https://​repo.zabbix.com/​non-supported/​|non-supported]]//​ directory.</​note>​
 +
 +=== SELinux configuration ===
 +
 +Having SELinux status enabled in enforcing mode, you need to execute the following commands to enable communication between Zabbix frontend and server:
 +
 +RHEL 7 and later:
 +  # setsebool -P httpd_can_connect_zabbix on
 +  If the database is accessible over network (including '​localhost'​ in case of PostgreSQL),​ you need to allow Zabbix frontend to connect to the database too:
 +  # setsebool -P httpd_can_network_connect_db on
 +
 +RHEL prior to 7:
 +  # setsebool -P httpd_can_network_connect on
 +  # setsebool -P zabbix_can_network on
 +
 +As frontend and SELinux configuration is done, you need to restart Apache web server:\\
 +
 +  # service httpd restart
 +
 +=== Agent installation ===
 +
 +To install the agent, run
 +
 +  # yum install zabbix-agent
 +
 +To start the agent, run:
 +
 +  # service zabbix-agent start
 +
 +=== Zabbix frontend and server on RHEL 6 ===
 +
 +Zabbix frontend on RHEL 6 is not supported because of PHP version. Since Zabbix 3.0 the requirements are to have PHP 5.4.0 or later while RHEL 6 latest version is 5.3.3 .
 +
 +In most cases Zabbix server and frontend are installed on the same machine. When upgrading 2.2 to 3.0 Zabbix server will perform database upgrade and frontend will stop working. There is no way to roll back the database changes so users will be forced to upgrade PHP using 3rd party packages. This is why Zabbix server is also deprecated on RHEL 6.
 +
 +If you still want to use Zabbix frontend on RHEL 6 and upgraded your PHP using 3rd party packages you would need to enable ''​zabbix-deprecated''​ repository first:
 +
 +  * open file /​etc/​yum.repos.d/​zabbix.repo
 +  * find section [zabbix-deprecated]
 +  * set enabled=1
 +  * save the file
 +
 +You will have to do some more manual configuration. This is because we cannot identify the Apache version required for your PHP which makes it impossible for us to provide proper Apache configuration for Zabbix frontend. We have included 2 Apache configuration files to our zabbix-web package, one for Apache 2.2 and another for 2.4, which you would need to integrate with the Apache configuration yourself:
 +
 +  * httpd22-example.conf
 +  * httpd24-example.conf
 +
 +To get the full path to the files execute:
 +
 +  $ rpm -ql zabbix-web | grep example.conf