
Description
Preconditions
- Magento 2.2.1
- Apache 2.4.25
- MySQL 5.7.20
- Ubuntu 17.04
- Virtual machine hardware (Esxi 5.5)
- CPU: Intel Xeon E5-1650 V3 @ 3.50GHz X 8
- RAM: 64 GO - I have a lot of products with big content description and attributes in 6 languages. +/- 65000 products. Database is big!
- PHP 7.1.11
Steps to reproduce
- magento index:reindex
or - magento deploy:mode:set production
I have to regularly (several times a day) use the command sudo service mysql restart in order to free some memory. If I do not do this, the server stops responding.
Expected result
- Command success and correct memory usage.
Actual result
- Process use all memory available and can not finish
My MySQL cnf file "/etc/mysql/conf.d/my.cnf":
The MySQL database server configuration file.
You can copy this to one of:
- "/etc/mysql/my.cnf" to set global options,
- "~/.my.cnf" to set user-specific options.
One can use all long options that the program supports.
Run program with --help to get a list of available options and with
--print-defaults to see which it would actually understand and use.
For explanations see
http://dev.mysql.com/doc/mysql/en/server-system-variables.html
This will be passed to all mysql clients
It has been reported that passwords should be enclosed with ticks/quotes
escpecially if they contain "#" chars...
Remember to edit /etc/mysql/debian.cnf when changing the socket location.
Here is entries for some specific programs
The following values assume you have at least 32M ram
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
* Basic Settings
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
Instead of skip-networking the default is now to listen only on
localhost which is more compatible and is not less secure.
bind-address = 127.0.0.1
* Fine Tuning
key_buffer_size = 64M
max_allowed_packet = 64M
thread_stack = 192K
thread_cache_size = 8
wait_timeout = 28800
connect_timeout = 120
This replaces the startup script and checks MyISAM tables if needed
the first time they are touched
myisam-recover-options = BACKUP
#max_connections = 100
#table_cache = 64
#thread_concurrency = 10
* Query Cache Configuration
query_cache_limit = 16M
query_cache_size = 256M
table_open_cache = 6000
key_buffer_size = 1024M
* Logging and Replication
Both location gets rotated by the cronjob.
Be aware that this log type is a performance killer.
As of 5.1 you can enable the log at runtime!
#general_log_file = /var/log/mysql/mysql.log
#general_log = 1
Error log - should be very few entries.
log_error = /var/log/mysql/error.log
Here you can see queries with especially long duration
#log_slow_queries = /var/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
The following can be used as easy to replay backup logs or for replication.
note: if you are setting up a replication slave, see README.Debian about
other settings you may need to change.
#server-id = 1
#log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
* InnoDB
innodb_buffer_pool_size = 4G
innodb_log_file_size = 16M