I need a help for fix my configuration of MySQL.
I've use MysqlTurner and this is the result:
>> MySQLTuner 1.7.19 - Major Hayden <major@mhtx.net>
>> Bug reports, feature requests, and downloads at http://mysqltuner.com/
>> Run with '--help' for additional options and output filtering
[--] Skipped version check for MySQLTuner script
[--] Performing tests on 127.0.0.1:3306
[OK] Logged in using credentials passed on the command line
[OK] Currently running supported MySQL version 10.2.32-MariaDB-10.2.32+maria~xenial
[OK] Operating on 64-bit architecture
-------- Log file Recommendations ------------------------------------------------------------------
[!!] Log file doesn't exist
-------- Storage Engine Statistics -----------------------------------------------------------------
[--] Status: +Aria +CSV +InnoDB +MEMORY +MRG_MyISAM +MyISAM +PERFORMANCE_SCHEMA +SEQUENCE
[--] Data in MyISAM tables: 203.2M (Tables: 84)
[--] Data in InnoDB tables: 967.1M (Tables: 162)
[OK] Total fragmented tables: 0
-------- Analysis Performance Metrics --------------------------------------------------------------
[--] innodb_stats_on_metadata: OFF
[OK] No stat updates during querying INFORMATION_SCHEMA.
-------- Security Recommendations ------------------------------------------------------------------
[OK] There are no anonymous accounts for any database users
[OK] All database users have passwords assigned
[!!] User 'sculli@%' does not specify hostname restrictions.
[--] There are 620 basic passwords in the list.
-------- CVE Security Recommendations --------------------------------------------------------------
[OK] NO SECURITY CVE FOUND FOR YOUR VERSION
-------- Performance Metrics -----------------------------------------------------------------------
[--] Up for: 9h 22m 30s (3M q [108.604 qps], 37K conn, TX: 29G, RX: 543M)
[--] Reads / Writes: 97% / 3%
[--] Binary logging is disabled
[--] Physical Memory : 7.8G
[--] Max MySQL memory : 3.8G
[--] Other process memory: 0B
[--] Total buffers: 433.0M global + 22.7M per thread (151 max threads)
[--] P_S Max memory usage: 0B
[--] Galera GCache Max memory usage: 0B
[OK] Maximum reached memory usage: 2.5G (32.39% of installed RAM)
[OK] Maximum possible memory usage: 3.8G (48.29% of installed RAM)
[OK] Overall possible memory usage with other process is compatible with memory available
[OK] Slow queries: 0% (134/3M)
[OK] Highest usage of available connections: 62% (95/151)
[OK] Aborted connections: 0.00% (0/37538)
[!!] name resolution is active : a reverse name resolution is made for each new connection and can reduce performance
[!!] Query cache may be disabled by default due to mutex contention.
[!!] Query cache efficiency: 0.0% (0 cached / 3M selects)
[OK] Query cache prunes per day: 0
[OK] Sorts requiring temporary tables: 0% (298 temp sorts / 722K sorts)
[!!] Joins performed without indexes: 13975
[!!] Temporary tables created on disk: 70% (283K on disk / 400K total)
[OK] Thread cache hit rate: 99% (95 created / 37K connections)
[OK] Table cache hit rate: 97% (239 open / 245 opened)
[OK] table_definition_cache(600) is upper than number of tables(514)
[OK] Open file limit used: 0% (44/16K)
[OK] Table locks acquired immediately: 100% (18K immediate / 18K locks)
-------- Performance schema ------------------------------------------------------------------------
[--] Performance schema is disabled.
[--] Memory used by P_S: 0B
[--] Sys schema is installed.
-------- ThreadPool Metrics ------------------------------------------------------------------------
[--] ThreadPool stat is enabled.
[--] Thread Pool Size: 4 thread(s).
[--] Using default value is good enough for your version (10.2.32-MariaDB-10.2.32+maria~xenial)
-------- MyISAM Metrics ----------------------------------------------------------------------------
[!!] Key buffer used: 18.4% (24M used / 134M cache)
[OK] Key buffer size / total MyISAM indexes: 128.0M/23.3M
[OK] Read Key buffer hit rate: 100.0% (5M cached / 200 reads)
-------- InnoDB Metrics ----------------------------------------------------------------------------
[--] InnoDB is enabled.
[--] InnoDB Thread Concurrency: 0
[OK] InnoDB File per table is activated
[!!] InnoDB buffer pool / data size: 128.0M/967.1M
[!!] Ratio InnoDB log file size / InnoDB Buffer pool size (75 %): 48.0M * 2/128.0M should be equal to 25%
[OK] InnoDB buffer pool instances: 1
[--] Number of InnoDB Buffer Pool Chunk : 1 for 1 Buffer Pool Instance(s)
[OK] Innodb_buffer_pool_size aligned with Innodb_buffer_pool_chunk_size & Innodb_buffer_pool_instances
[OK] InnoDB Read buffer efficiency: 95.64% (4017613026 hits/ 4200815082 total)
[!!] InnoDB Write Log efficiency: 5.17% (1142 hits/ 22095 total)
[OK] InnoDB log waits: 0.00% (0 waits / 20953 writes)
-------- AriaDB Metrics ----------------------------------------------------------------------------
[--] AriaDB is enabled.
[OK] Aria pagecache size / total Aria indexes: 128.0M/1B
[OK] Aria pagecache hit rate: 99.4% (40M cached / 246K reads)
-------- TokuDB Metrics ----------------------------------------------------------------------------
[--] TokuDB is disabled.
-------- XtraDB Metrics ----------------------------------------------------------------------------
[--] XtraDB is disabled.
-------- Galera Metrics ----------------------------------------------------------------------------
[--] Galera is disabled.
-------- Replication Metrics -----------------------------------------------------------------------
[--] Galera Synchronous replication: NO
[--] No replication slave(s) for this server.
[--] Binlog format: MIXED
[--] XA support enabled: ON
[--] Semi synchronous replication Master: Not Activated
[--] Semi synchronous replication Slave: Not Activated
[--] This is a standalone server
-------- Recommendations ---------------------------------------------------------------------------
General recommendations:
Restrict Host for 'sculli'@% to sculli@SpecificDNSorIp
UPDATE mysql.user SET host ='SpecificDNSorIp' WHERE user='sculli' AND host ='%'; FLUSH PRIVILEGES;
MySQL was started within the last 24 hours - recommendations may be inaccurate
Configure your accounts with ip or subnets only, then update your configuration with skip-name-resolve=1
We will suggest raising the 'join_buffer_size' until JOINs not using indexes are found.
(specially the conclusions at the bottom of the page).
When making adjustments, make tmp_table_size/max_heap_table_size equal
Reduce your SELECT DISTINCT queries which have no LIMIT clause
Performance schema should be activated for better diagnostics
Before changing innodb_log_file_size and/or innodb_log_files_in_group read this:
Variables to adjust:
query_cache_size (=0)
query_cache_type (=0)
query_cache_limit (> 4M, or use smaller result sets)
join_buffer_size (> 4.0M, or always use indexes with JOINs)
tmp_table_size (> 32M)
max_heap_table_size (> 32M)
performance_schema = ON enable PFS
innodb_buffer_pool_size (>= 967.1M) if possible.
innodb_log_file_size should be (=16M) if possible, so InnoDB total log files size equals to 25% of buffer pool size.
Details of my server: _mysql Ver 15.1 Distrib 10.2.32-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2 _Ubuntu 16.04.6 LTS \n \l (i know... i know) 4 CPU 8 Gb RAM 7 Gb Swap
Configuration of *.cnf:
# MariaDB-specific config file.
# Read by /etc/mysql/my.cnf
[client]
# Default is Latin1, if you need UTF-8 set this (also in server section)
#default-character-set = utf8
[mysqld]
table_definition_cache = 600
#
### 20200711 mysqltuner
query_cache_limit = 4M
join_buffer_size = 4M
tmp_table_size = 32M
max_heap_table_size = 32M
# * Character sets
#
# Default is Latin1, if you need UTF-8 set all this (also in client section)
#
#character-set-server = utf8
#collation-server = utf8_general_ci
#character_set_server = utf8
#collation_server = utf8_general_ci
# Import all .cnf files from configuration directory
!includedir /etc/mysql/mariadb.conf.d/