Necesito optimizar Apache y Mysql para un VPS

[cpu210]

Hola, actualmente he contratado un VPS de Strato con las siguientes características:

CPU GenuineIntel, Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz
Parallels Plesk v12
CentOS 6.6 (Final)
4GB RAM
200GB HDD
Trafico Ilimitado

Cuando la web comienza a tener tráfico comienza a ir muy lento (15..20 usuarios simultaneos). He conseguido mejorar bastante el rendimiento "optimizando" Apache y Mysql con datos que he sacado de internet pero no consigo que funcione correctamente.

Si alguien sabría decirme la configuración adecuada de Apache y Mysql para este VPS o al menos orientarme de qué valores debo ir modificando.. estaría muy agradecido.

Saludos!

[lauser]

Has probado a usar MySQLTuner? Creo que te vendría bien.

[cpu210]

Estos son los resultados del MySQLTunner:


>> MySQLTuner 1.3.0 - Major Hayden <[email protected]>
>> Bug reports, feature requests, and downloads at http://mysqltuner.com/
>> Run with '--help' for additional options and output filtering
[OK] Currently running supported MySQL version 5.1.73
[OK] Operating on 64-bit architecture

-------- Storage Engine Statistics -------------------------------------------
[--] Status: +CSV +InnoDB +MRG_MYISAM
[--] Data in MyISAM tables: 238K (Tables: 77)
[--] Data in InnoDB tables: 148M (Tables: 543)
[!!] Total fragmented tables: 544

-------- Security Recommendations -------------------------------------------
[OK] All database users have passwords assigned

-------- Performance Metrics -------------------------------------------------
[--] Up for: 2h 52m 12s (1M q [106.443 qps], 13K conn, TX: 1B, RX: 300M)
[--] Reads / Writes: 99% / 1%
[--] Total buffers: 1.1G global + 2.7M per thread (151 max threads)
[OK] Maximum possible memory usage: 1.5G (36% of installed RAM)
[OK] Slow queries: 0% (153/1M)
[OK] Highest usage of available connections: 13% (21/151)
[OK] Key buffer size / total MyISAM indexes: 8.0M/682.0K
[OK] Key buffer hit rate: 100.0% (95M cached / 15 reads)
[!!] Query cache is disabled
[OK] Sorts requiring temporary tables: 0% (2 temp sorts / 222K sorts)
[!!] Joins performed without indexes: 1902
[OK] Temporary tables created on disk: 8% (15K on disk / 178K total)
[!!] Thread cache is disabled
[!!] Table cache hit rate: 0% (64 open / 613K opened)
[OK] Open file limit used: 0% (8/1K)
[OK] Table locks acquired immediately: 100% (2M immediate / 2M locks)
[OK] InnoDB buffer pool / data size: 1.0G/148.7M
[OK] InnoDB log waits: 0
-------- Recommendations -----------------------------------------------------
General recommendations:
Run OPTIMIZE TABLE to defragment tables for better performance
MySQL started within last 24 hours - recommendations may be inaccurate
Enable the slow query log to troubleshoot bad queries
Adjust your join queries to always utilize indexes
Set thread_cache_size to 4 as a starting value
Increase table_open_cache gradually to avoid file descriptor limits
Read this before increasing table_open_cache over 64: http://bit.ly/1mi7c4C
Variables to adjust:
query_cache_size (>= 8M)
join_buffer_size (> 128.0K, or always use indexes with joins)
thread_cache_size (start at 4)
table_open_cache (> 64)

[lauser]

Pues aplica las recomendaciones...

Código :

nano /etc/mysql/my.cnf
 

Y si creas un crontab para que roten los logs, mejor que mejor.

[lauser]

Te pongo un ejemplo:

Código :

root@XXXXX:/usr/local/bin# /usr/local/bin/mysqltuner.pl
>>  MySQLTuner 1.3.0 - Major Hayden <[email protected]>
>>  Bug reports, feature requests, and downloads at http://mysqltuner.com/
>>  Run with '--help' for additional options and output filtering
Please enter your MySQL administrative login: root
Please enter your MySQL administrative password:
-------- General Statistics --------------------------------------------------
[--] Skipped version check for MySQLTuner script
[OK] Currently running supported MySQL version 5.0.51a-24+lenny2
[!!] Switch to 64-bit OS - MySQL cannot currently use all of your RAM
-------- Storage Engine Statistics -------------------------------------------
[--] Status: +Archive -BDB -Federated +InnoDB -ISAM -NDBCluster
[--] Data in MyISAM tables: 26M (Tables: 215)
[!!] InnoDB is enabled but isn't being used
[!!] Total fragmented tables: 33
-------- Performance Metrics -------------------------------------------------
[--] Up for: 96d 23h 3m 41s (10M q [1.239 qps], 686K conn, TX: 701M, RX: 1B)
[--] Reads / Writes: 44% / 56%
[--] Total buffers: 58.0M global + 2.6M per thread (100 max threads)
[OK] Maximum possible memory usage: 320.5M (12% of installed RAM)
[OK] Slow queries: 0% (20/10M)
[OK] Highest usage of available connections: 33% (33/100)
[OK] Key buffer size / total MyISAM indexes: 16.0M/8.5M
[OK] Key buffer hit rate: 99.9% (57M cached / 30K reads)
[OK] Query cache efficiency: 78.6% (5M cached / 6M selects)
[!!] Query cache prunes per day: 483
[OK] Sorts requiring temporary tables: 0% (0 temp sorts / 408K sorts)
[!!] Temporary tables created on disk: 36% (269K on disk / 745K total)
[OK] Thread cache hit rate: 99% (427 created / 686K connections)
[!!] Table cache hit rate: 2% (64 open / 3K opened)
[OK] Open file limit used: 11% (120/1K)
[OK] Table locks acquired immediately: 99% (3M immediate / 3M locks)
-------- Recommendations -----------------------------------------------------
General recommendations:
Add skip-innodb to MySQL configuration to disable InnoDB
Run OPTIMIZE TABLE to defragment tables for better performance
Enable the slow query log to troubleshoot bad queries
When making adjustments, make tmp_table_size/max_heap_table_size equal
Reduce your SELECT DISTINCT queries without LIMIT clauses
Increase table_cache gradually to avoid file descriptor limits
Variables to adjust:
query_cache_size (> 16M)
tmp_table_size (> 32M)
max_heap_table_size (> 16M)
table_cache (> 64)
 

El resultado es:

Código :

nano /etc/mysql/my.cnf
 

Código :

[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
language        = /usr/share/mysql/english
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              = 16M
max_allowed_packet      = 16M
thread_stack            = 128K
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            = 128
#thread_concurrency     = 10
#
# * Query Cache Configuration
#
query_cache_limit       = 1M
query_cache_size        = 32M
tmp_table_sizee        = 64M
max_heap_table_sizee        = 32M
 

[hostigal]

tienes activado algun tipo de sistema de cache?
saludos.