A configured my.cnf for a 4GB server also running FPM/Apache

my.cnf

#
# The MySQL database server configuration file.
#
[client]
port            = 3306
socket          = /var/run/mysqld/mysqld.sock

[mysqld_safe]
socket          = /var/run/mysqld/mysqld.sock
nice            = 0

[mysqld]
user            = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
datadir         = /var/lib/mysql
tmpdir          = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking

bind-address            = 127.0.0.1

key_buffer              = 16M
max_allowed_packet      = 16M
thread_stack            = 192K
thread_cache_size       = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover         = BACKUP
#max_connections        = 100
#table_cache            = 64
#thread_concurrency     = 10

#unique additional
# * Logging
slow_query_log
slow_query_log_file=/var/log/mysql/mysql-slow.log
long_query_time=2
log-queries-not-using-indexes

log_bin=/var/log/mysql/mysql-bin
expire_logs_days=10
max_binlog_size=100M

tmp_table_size          = 2048M
max_heap_table_size     = 2048M
# * Query Cache Configuration
query_cache_size        = 32M
query_cache_limit       = 4M
key_buffer_size         = 64K
thread_cache_size       = 4
table_open_cache        = 4000
max_allowed_packet      = 128M
thread_stack            = 64K
sort_buffer_size        = 512K
read_rnd_buffer_size    = 512K
read_buffer_size        = 512K
join_buffer_size        = 1M
net_buffer_length       = 2K

tmpdir=/dev/shm
skip-external-locking
collation_server=utf8_general_ci
character-set-server=utf8

max_connections = 100

# * InnoDB
#
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
innodb_flush_method=O_DSYNC
innodb_buffer_pool_size=1024M
innodb_log_buffer_size=5M

[mysqldump]
quick
quote-names
max_allowed_packet      = 80M

[mysql]
#no-auto-rehash # faster start of mysql but no tab completition

[isamchk]
key_buffer              = 16M

#
# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with '.cnf', otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/