How to configure OVH CentOS 7 Plesk 12.5 servers for single ecommerce in PrestaShop

[Arteinfo]

I have the following server available:

 

Server OVH Enterprise SP-32

Linux Plesk 12.5 (Cent OS 7)

Intel® Xeon® CPU E3-1231 v3 @ 3.40GHz – Core: 8

32 GB RAM 

2x2000GB SATA

1Gbps (500 Mbps)

 

Current configuration:

PHP 5.6.30 - FPM Apache

memory_limit: 2048M

max_execution_time: 300

max_input_time: 300

post_max_size: 256M

upload_max_filesize: 256M

opcache.enable: on

max_input_vars = 15000; //to manage prestashop translations

 

Intelligent file static processing: disable 

 

Additional Nginx Directives:

proxy_buffer_size 256k;

proxy_buffers 8 512k;

proxy_busy_buffers_size 512k;

fastcgi_buffer_size 256k;

fastcgi_buffers 512 8k;

fastcgi_busy_buffers_size 512k;

fastcgi_temp_file_write_size 512k;

fastcgi_connect_timeout 600;

fastcgi_send_timeout 600;

fastcgi_read_timeout 600;

proxy_connect_timeout 600;

proxy_send_timeout 600;

send_timeout  600;

 

my.cnf

[mysqld]

#bind-address = ::

bind-address = 127.0.0.1

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

performance_schema = on

slow-query-log = 1

slow-query-log-file = /var/log/mysql/mysql-slow.log

long_query_time = 1

log-queries-not-using-indexes

key_buffer = 512M

join_buffer_size = 48M

query_cache_size = 8M

query_cache_type = 0

query_cache_limit = 2M

tmp_table_size = 2048M

max_heap_table_size = 2048M

thread_cache_size = 4

innodb_buffer_pool_size = 3072M

innodb_file_per_table = ON

table_open_cache = 500

innodb_buffer_pool_instances = 3

 

How to modify its standard configuration to implement performance and reduce server response time?

The need is to manage a single ecommerce on PrestaShop and with an Ap PageBuilder theme.