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Abaixo os log do mysql tunner:
>> MySQLTuner 1.7.13 - 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
Please enter your MySQL administrative login: sT2lFvEvBcGo4J
Please enter your MySQL administrative password: [!!] failed to execute: SHOW SLAVE STATUS\G
[!!] FAIL Execute SQL / return code: 256
[!!] failed to execute: SHOW SLAVE HOSTS
[!!] FAIL Execute SQL / return code: 256
[OK] Currently running supported MySQL version 10.3.9-MariaDB
[OK] Operating on 64-bit architecture
-------- Log file Recommendations ------------------------------------------------------------------
[--] Log file: /var/lib/mysql/exerciciosvps.err(0B)
[!!] Log file /var/lib/mysql/exerciciosvps.err doesn't exist
[!!] Log file /var/lib/mysql/exerciciosvps.err isn't readable.
-------- Storage Engine Statistics -----------------------------------------------------------------
[--] Status: +Aria +CSV +InnoDB +MEMORY +MRG_MyISAM +MyISAM +PERFORMANCE_SCHEMA +SEQUENCE
[--] Data in MyISAM tables: 40.8M (Tables: 29)
[--] Data in InnoDB tables: 1.2M (Tables: 19)
[OK] Total fragmented tables: 0
-------- Analysis Performance Metrics --------------------------------------------------------------
[--] innodb_stats_on_metadata: OFF
[OK] No stat updates during querying INFORMATION_SCHEMA.
-------- Security Recommendations ------------------------------------------------------------------
[!!] failed to execute: SELECT CONCAT(user, '@', host) FROM mysql.user WHERE TRIM(USER) = '' OR USER IS NULL
[!!] FAIL Execute SQL / return code: 256
[OK] There are no anonymous accounts for any database users
[!!] failed to execute: SELECT CONCAT(user, '@', host) FROM mysql.user WHERE (IF(plugin='mysql_native_password', authentication_string, 'password') = '' OR IF(plugin='mysql_native_password', authentication_string, 'password') IS NULL) AND plugin NOT IN ('unix_socket', 'win_socket', 'auth_pam_compat')
[!!] FAIL Execute SQL / return code: 256
[OK] All database users have passwords assigned
[!!] failed to execute: SELECT CONCAT(user, '@', host) FROM mysql.user WHERE CAST(IF(plugin='mysql_native_password', authentication_string, 'password') as Binary) = PASSWORD(user) OR CAST(IF(plugin='mysql_native_password', authentication_string, 'password') as Binary) = PASSWORD(UPPER(user)) OR CAST(IF(plugin='mysql_native_password', authentication_string, 'password') as Binary) = PASSWORD(CONCAT(UPPER(LEFT(User, 1)), SUBSTRING(User, 2, LENGTH(User))))
[!!] FAIL Execute SQL / return code: 256
[!!] failed to execute: SELECT CONCAT(user, '@', host) FROM mysql.user WHERE HOST='%'
[!!] FAIL Execute SQL / return code: 256
[!!] There is no basic password file list!
-------- CVE Security Recommendations --------------------------------------------------------------
[--] Skipped due to --cvefile option undefined
-------- Performance Metrics -----------------------------------------------------------------------
[--] Up for: 12h 50m 29s (1M q [28.564 qps], 20K conn, TX: 11G, RX: 176M)
[--] Reads / Writes: 99% / 1%
[--] Binary logging is disabled
[--] Physical Memory : 991.6M
[--] Max MySQL memory : 856.4M
[--] Other process memory: 177.3M
[--] Total buffers: 417.0M global + 2.9M per thread (151 max threads)
[--] P_S Max memory usage: 0B
[--] Galera GCache Max memory usage: 0B
[OK] Maximum reached memory usage: 466.5M (47.04% of installed RAM)
[!!] Maximum possible memory usage: 856.4M (86.37% of installed RAM)
[!!] Overall possible memory usage with other process exceeded memory
[OK] Slow queries: 0% (0/1M)
[OK] Highest usage of available connections: 11% (17/151)
[OK] Aborted connections: 0.01% (2/20731)
[!!] 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 / 1M selects)
[OK] Query cache prunes per day: 0
[OK] Sorts requiring temporary tables: 0% (0 temp sorts / 306K sorts)
[OK] No joins without indexes
[!!] Temporary tables created on disk: 70% (102K on disk / 146K total)
[OK] Thread cache hit rate: 99% (17 created / 20K connections)
[OK] Table cache hit rate: 88% (104 open / 118 opened)
[OK] Open file limit used: 0% (108/16K)
[OK] Table locks acquired immediately: 99% (1M immediate / 1M locks)
-------- Performance schema ------------------------------------------------------------------------
[--] Performance schema is disabled.
[--] Memory used by P_S: 0B
[--] Sys schema isn't installed.
-------- ThreadPool Metrics ------------------------------------------------------------------------
[--] ThreadPool stat is enabled.
[--] Thread Pool Size: 1 thread(s).
[--] Using default value is good enough for your version (10.3.9-MariaDB)
-------- MyISAM Metrics ----------------------------------------------------------------------------
[!!] Key buffer used: 20.3% (27M used / 134M cache)
[OK] Key buffer size / total MyISAM indexes: 128.0M/4.8M
[OK] Read Key buffer hit rate: 100.0% (10B cached / 4K reads)
[!!] Write Key buffer hit rate: 85.6% (1K cached / 1K writes)
-------- InnoDB Metrics ----------------------------------------------------------------------------
[--] InnoDB is enabled.
[--] InnoDB Thread Concurrency: 0
[OK] InnoDB File per table is activated
[OK] InnoDB buffer pool / data size: 128.0M/1.2M
[!!] Ratio InnoDB log file size / InnoDB Buffer pool size (75 %): 48.0M * 2/128.0M should be equal 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: 99.84% (326886 hits/ 327408 total)
[!!] InnoDB Write Log efficiency: 81.84% (604 hits/ 738 total)
[OK] InnoDB log waits: 0.00% (0 waits / 134 writes)
-------- AriaDB Metrics ----------------------------------------------------------------------------
[--] AriaDB is enabled.
[OK] Aria pagecache size / total Aria indexes: 128.0M/1B
[OK] Aria pagecache hit rate: 99.7% (29M cached / 89K 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: OFF
[--] Semi synchronous replication Slave: OFF
[--] This is a standalone server
-------- Recommendations ---------------------------------------------------------------------------
General recommendations:
MySQL was started within the last 24 hours - recommendations may be inaccurate
Reduce your overall MySQL memory footprint for system stability
Dedicate this server to your database for highest performance.
Configure your accounts with ip or subnets only, then update your configuration with skip-name-resolve=1
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
Consider installing Sys schema from https://github.com/mysql/mysql-sys
Before changing innodb_log_file_size and/or innodb_log_files_in_group read this: http://bit.ly/2wgkDvS
Variables to adjust:
query_cache_size (=0)
query_cache_type (=0)
query_cache_limit (> 1M, or use smaller result sets)
tmp_table_size (> 16M)
max_heap_table_size (> 16M)
performance_schema = ON enable PFS
innodb_log_file_size should be (=16M) if possible, so InnoDB total log files size equals to 25% of buffer pool size.