mysqltuner

时间：2023-03-09 18:22:44
mysqltuner

http://mysqltuner.com/

MySQLTuner-perl

MySQLTuner is a script written in Perl that will assist you with your MySQL configuration and make recommendations for increased performance and stability.

View the Project on GitHubmajor/MySQLTuner-perl

MySQLTuner-perl

MySQLTuner is a script written in Perl that allows you to review a MySQL installation quickly and make adjustments to increase performance and stability. The current configuration variables and status data is retrieved and presented in a brief format along with some basic performance suggestions.

[root@server-mysql ~]# perl mysqltuner.pl --host 127.0.0.1 --user root --password "" --port

 >>  MySQLTuner 1.6. - 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:

[OK] Logged in using credentials passed on the command line

[OK] Currently running supported MySQL version 5.6.

[OK] Operating on -bit architecture

-------- Storage Engine Statistics -----------------------------------------------------------------

[--] Status: +ARCHIVE +BLACKHOLE +CSV -FEDERATED +InnoDB +MEMORY +MRG_MYISAM +MyISAM +PERFORMANCE_SCHEMA

[--] Data in InnoDB tables: 2G (Tables: )

[OK] Total fragmented tables: 

-------- Security Recommendations ------------------------------------------------------------------

[!!] User '@localhost' is an anonymous account.

[!!] User '@server-mysql' is an anonymous account.

[!!] User '@localhost' has no password set.

[!!] User '@server-mysql' has no password set.

[!!] User 'root@%' has no password set.

[!!] User 'root@127.0.0.1' has no password set.

[!!] User 'root@::1' has no password set.

[!!] User 'root@localhost' has no password set.

[!!] User 'root@server-mysql' has no password set.

[!!] User '@localhost' has user name as password.

[!!] User '@server-mysql' has user name as password.

[!!] User 'root@%' hasn't specific host restriction.

[!!] There is no basic password file list!

-------- CVE Security Recommendations --------------------------------------------------------------

[--] Skipped due to --cvefile option undefined

-------- Performance Metrics -----------------------------------------------------------------------

[--] Up for: 3h 24m 11s (1K q [0.160 qps],  conn, TX: 3M, RX: 91K)

[--] Reads / Writes: % / %

[--] Binary logging is disabled

[--] Physical Memory     : .3G

[--] Max MySQL memory    : 646.7M

[--] Other process memory: 154.7M

[--] Total buffers: 73.0M global + 1.1M per thread ( max threads)

[--] P_S Max memory usage: 403M

[--] Galera GCache Max memory usage: 0B

[OK] Maximum reached memory usage: 480.2M (36.03% of installed RAM)

[OK] Maximum possible memory usage: 646.7M (48.52% of installed RAM)

[OK] Overall possible memory usage with other process is compatible with memory available

[OK] Slow queries: % (/1K)

[OK] Highest usage of available connections: % (/)

[OK] Aborted connections: 0.00%  (/)

[OK] Query cache is disabled by default due to mutex contention on multiprocessor machines.

[OK] Sorts requiring temporary tables: % ( temp sorts /  sorts)

[OK] No joins without indexes

[OK] Temporary tables created on disk: % ( on disk / 6K total)

[OK] Table cache hit rate: % ( open /  opened)

[OK] Open file limit used: % (/5K)

[OK] Table locks acquired immediately: % ( immediate /  locks)

-------- Performance schema ------------------------------------------------------------------------

[--] Performance schema is enabled.

[--] Memory used by P_S: 403.8M

[--] Sys schema is installed.

-------- ThreadPool Metrics ------------------------------------------------------------------------

[--] ThreadPool stat is disabled.

-------- MyISAM Metrics ----------------------------------------------------------------------------

[!!] Key buffer used: 18.3% (1M used / 8M cache)

[OK] Key buffer size / total MyISAM indexes: 8.0M/.0K

[OK] Read Key buffer hit rate: 99.5% ( cached /  reads)

-------- AriaDB Metrics ----------------------------------------------------------------------------

[--] AriaDB is disabled.

-------- InnoDB Metrics ----------------------------------------------------------------------------

[--] InnoDB is enabled.

[!!] InnoDB buffer pool / data size: 32.0M/.8G

[!!] InnoDB buffer pool <= 1G and innodb_buffer_pool_instances(!=).

[!!] InnoDB Used buffer: 22.77% ( used/  total)

[OK] InnoDB Read buffer efficiency: 94.41% ( hits/  total)

[!!] InnoDB Write Log efficiency: 16.67% ( hits/  total)

[OK] InnoDB log waits: 0.00% ( waits /  writes)

-------- TokuDB Metrics ----------------------------------------------------------------------------

[--] TokuDB is disabled.

-------- Galera Metrics ----------------------------------------------------------------------------

[--] Galera is disabled.

-------- Replication Metrics -----------------------------------------------------------------------

[--] Galera Synchronous replication: NO

[--] No replication slave(s) for this server.

[--] This is a standalone server.

-------- Recommendations ---------------------------------------------------------------------------

General recommendations:

    Remove Anonymous User accounts - there are  anonymous accounts.

    Set up a Password for user with the following SQL statement ( SET PASSWORD FOR 'user'@'SpecificDNSorIp' = PASSWORD('secure_password'); )

    Set up a Secure Password for user@host ( SET PASSWORD FOR 'user'@'SpecificDNSorIp' = PASSWORD('secure_password'); )

    Restrict Host for user@% to user@SpecificDNSorIp

    MySQL started within last  hours - recommendations may be inaccurate

Variables to adjust:

    innodb_buffer_pool_size (>= 2G) if possible.

    innodb_buffer_pool_instances (=)

[root@server-mysql ~]#

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