Mariadb configure alloted memory - mariadb

Question

I want to allocate more memory to my MariaDB server but I am having difficulties in locating the right my.cnf file.
Basically I want to edit the innodb_buffer_pool_size
This is the content of the my.cnf file in /etc/my.cnf
[mysqld]
bind-address = ::
skip_name_resolve
local-infile=0
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
#
# include all files from the config directory
!includedir /etc/my.cnf.d
So I proceeded to check the files in /etc/my.cnf.d for the innodb_buffer_pool_size value, but most of the files are almost empty.
Should I just add the string with the value that I prefer? Or am I looking in the wrong place?
Using Plesk 17.5.3 #18 CentOS 7 and MariaDB 10.1.25
Hope someone can help me out on this one.
I added the inno_db_buffer_size to my.cnf as suggested, but whe
Hi, I adjusted the value and restarted the service, but when I run:
https://github.com/major/MySQLTuner-perl
It gives me the following output:
Hi, I adjusted the value and restarted the service, but when i run:
https://github.com/major/MySQLTuner-perl
It gives me the following output:
Set thread_cache_size to 4 as a starting value
Performance should be activated for better diagnostics
Consider installing Sys schema from https://github.com/mysql/mysql-sys
Variables to adjust:
query_cache_size (=0)
query_cache_type (=0)
query_cache_limit (> 1M, or use smaller result sets)
join_buffer_size (> 256.0K, or always use indexes with joins)
tmp_table_size (> 16M)
max_heap_table_size (> 16M)
thread_cache_size (start at 4)
performance_schema = ON enable PFS
innodb_buffer_pool_size (>= 139M) if possible.
innodb_log_file_size should be (=16M) if possible, so InnoDB total log files size equals to 25% of buffer pool size.
innodb_buffer_pool_instances (=1)
It seems to me that even though I adjusted the value, it's not reflected.
How can I check this?

Answer 1

It is okay that you do not see the innodb_buffer_pool_size. Most of MySQL parameters are not defined in /etc/my.cnf and database server uses the default ones. For innodb_buffer_pool_size it is 128M.
To set this value differ just define it in [mysqld] of /etc/my.cnf. For example innodb_buffer_pool_size = 512M