1 Database creation
Overview
A Zabbix database must be created during the installation of Zabbix server or proxy.
This section provides instructions for creating a Zabbix database. A separate set of instructions is available for each supported database.
UTF-8 is the only encoding supported by Zabbix. It is known to work without any security flaws. Users should be aware that there are known security issues if using some of the other encodings.
If installing from Zabbix Git repository, you need to run the following command prior to proceeding to the next steps:
$ make dbschema
MySQL
Character set utf8 and utf8_bin collation is required for Zabbix server/proxy to work properly with MySQL database.
If you are installing from Zabbix packages, proceed to the instructions for your platform.
If you are installing Zabbix from sources:
- Create and configure a database and a user.
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;
- Import the data into the database. For a Zabbix proxy database, only
schema.sqlshould be imported (no images.sql nor data.sql).
cd database/mysql
mysql -uzabbix -p<password> zabbix < schema.sql
# stop here if you are creating database for Zabbix proxy
mysql -uzabbix -p<password> zabbix < images.sql
mysql -uzabbix -p<password> zabbix < data.sql
PostgreSQL
You need to have database user with permissions to create database objects.
If you are installing from Zabbix packages, proceed to the instructions for your platform.
If you are installing Zabbix from sources:
- Create a database user.
The following shell command will create user zabbix. Specify
a password when prompted and repeat the password (note, you may first be asked
for sudo password):
sudo -u postgres createuser --pwprompt zabbix
- Create a database.
The following shell command will create the database zabbix (last parameter) with the
previously created user as the owner (-O zabbix).
sudo -u postgres createdb -O zabbix -E Unicode -T template0 zabbix
- Import the initial schema and data (assuming you are in the root directory of Zabbix sources).
For a Zabbix proxy database, only schema.sql should be
imported (no images.sql nor data.sql).
cd database/postgresql
cat schema.sql | sudo -u zabbix psql zabbix
# stop here if you are creating database for Zabbix proxy
cat images.sql | sudo -u zabbix psql zabbix
cat data.sql | sudo -u zabbix psql zabbix
The above commands are provided as an example that will work in most of GNU/Linux installations.
You can use different commands depending on how your system/database is configured, for example:
psql -U <username>
If you have any trouble setting up the database, please consult your Database administrator.
TimescaleDB
Instructions for creating and configuring TimescaleDB are provided in a separate section.
Oracle
We assume that a zabbix database user with password password exists
and has permissions to create database objects in ORCL service located
on the host Oracle database server with a user shell user having
write access to /tmp directory. Zabbix requires a Unicode database
character set and a UTF8 national character set. Check current
settings:
sqlplus> select parameter,value from v$nls_parameters where parameter='NLS_CHARACTERSET' or parameter='NLS_NCHAR_CHARACTERSET';
If you are creating a database for Zabbix server you need to have images from Zabbix sources on the host where Oracle is running. Copy them to a directory /tmp/zabbix_images on the Oracle host:
cd /path/to/zabbix-sources
ssh user@oracle_host "mkdir /tmp/zabbix_images"
scp -r misc/images/png_modern user@oracle_host:/tmp/zabbix_images/
Now prepare the database:
cd /path/to/zabbix-sources/database/oracle
sqlplus zabbix/password@oracle_host/ORCL
sqlplus> @schema.sql
# stop here if you are creating database for Zabbix proxy
sqlplus> @images.sql
sqlplus> @data.sql
Please set the initialization parameter CURSOR_SHARING=FORCE for best performance.
Now the temporary directory can be removed:
ssh user@oracle_host "rm -rf /tmp/zabbix_images"
SQLite
Using SQLite is supported for Zabbix proxy only!
The database will be automatically created if it does not exist.
Return to the installation section.
Additional patches
In some cases, Zabbix might generate non-optimized queries to the database.
This may happen, for example, as a result of using an older database version.
Additional DB patches are available for resolving such issues on the specific database or, sometimes, a specific database version.
See Known issues for the list of known problems and available patches.