MySql my.cnf recommended settings

wget http://mysqltuner.com/mysqltuner.pl

root@myvps[/usr/local/bin]# wget http://mysqltuner.pl/mysqltuner.pl
--2016-10-03 20:26:50--  http://mysqltuner.pl/mysqltuner.pl
Resolving mysqltuner.pl... 217.70.184.38
Connecting to mysqltuner.pl|217.70.184.38|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://raw.github.com/major/MySQLTuner-perl/master/mysqltuner.pl/mysq      ltuner.pl [following]
--2016-10-03 20:26:50--  https://raw.github.com/major/MySQLTuner-perl/master/mys      qltuner.pl/mysqltuner.pl
Resolving raw.github.com... 151.101.48.133
Connecting to raw.github.com|151.101.48.133|:443... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://raw.githubusercontent.com/major/MySQLTuner-perl/master/mysqltu      ner.pl/mysqltuner.pl [following]
--2016-10-03 20:26:50--  https://raw.githubusercontent.com/major/MySQLTuner-perl      /master/mysqltuner.pl/mysqltuner.pl
Resolving raw.githubusercontent.com... 151.101.48.133
Connecting to raw.githubusercontent.com|151.101.48.133|:443... connected.
HTTP request sent, awaiting response... 404 Not Found
2016-10-03 20:26:51 ERROR 404: Not Found.

cd /usr/local/bin

wget https://raw.githubusercontent.com/major/MySQLTuner-perl/master/mysqltuner.pl

chmod +x mysqltuner.pl

/usr/local/bin/mysqltuner.pl

root@myvps [/usr/local/bin]# /usr/local/bin/mysqltuner.pl
 >>  MySQLTuner 1.6.20 - Major Hayden <[email protected]>
 >>  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
[OK] Currently running supported MySQL version 5.5.51-38.2
[OK] Operating on 64-bit architecture

-------- Storage Engine Statistics ---------------------------------------------      --------------------
[--] Status: +ARCHIVE +BLACKHOLE +CSV -FEDERATED +InnoDB +MEMORY +MRG_MYISAM +My      ISAM +PERFORMANCE_SCHEMA
[--] Data in MyISAM tables: 1G (Tables: 474)
[--] Data in InnoDB tables: 322M (Tables: 1377)
[OK] Total fragmented tables: 0

-------- Security Recommendations ------------------------------------------------------------------
[OK] There are no anonymous accounts for any database users
[OK] All database users have passwords assigned
[!!] There is no basic password file list!

-------- CVE Security Recommendations --------------------------------------------------------------
[--] Skipped due to --cvefile option undefined

-------- Performance Metrics -----------------------------------------------------------------------
[--] Up for: 11d 19h 57m 3s (50K q [0.050 qps], 7K conn, TX: 7M, RX: 8M)
[--] Reads / Writes: 32% / 68%
[--] Binary logging is disabled
[--] Physical Memory     : 2.8G
[--] Max MySQL memory    : 583.2M
[--] Other process memory: 261.2M
[--] Total buffers: 168.0M global + 2.8M per thread (151 max threads)
[--] P_S Max memory usage: 0B
[--] Galera GCache Max memory usage: 0B
[OK] Maximum reached memory usage: 184.5M (6.41% of installed RAM)
[OK] Maximum possible memory usage: 583.2M (20.25% of installed RAM)
[OK] Overall possible memory usage with other process is compatible with memory available
[OK] Slow queries: 0% (12/50K)
[OK] Highest usage of available connections: 3% (6/151)
[!!] Aborted connections: 37.83%  (3026/7999)
[!!] 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.
[OK] Sorts requiring temporary tables: 0% (0 temp sorts / 65 sorts)
[OK] No joins without indexes
[OK] Temporary tables created on disk: 17% (191 on disk / 1K total)
[!!] Thread cache is disabled
[!!] Table cache hit rate: 1% (400 open / 23K opened)
[OK] Open file limit used: 15% (162/1K)
[OK] Table locks acquired immediately: 99% (20K immediate / 20K locks)

-------- Performance schema ------------------------------------------------------------------------
[--] Performance schema is disabled.

-------- ThreadPool Metrics ------------------------------------------------------------------------
[--] ThreadPool stat is enabled.
[--] Thread Pool Size: 8 thread(s).
[!!] thread_pool_size between 16 and 36 when using InnoDB storage engine.

-------- MyISAM Metrics ----------------------------------------------------------------------------
[!!] Key buffer used: 21.7% (1M used / 8M cache)
[!!] Key buffer size / total MyISAM indexes: 8.0M/210.8M
[!!] Read Key buffer hit rate: 27.8% (2M cached / 1M reads)
[!!] Write Key buffer hit rate: 0.1% (173K cached / 173K writes)

-------- AriaDB Metrics ----------------------------------------------------------------------------
[--] AriaDB is disabled.

-------- InnoDB Metrics ----------------------------------------------------------------------------
[--] InnoDB is enabled.
[!!] InnoDB buffer pool / data size: 128.0M/322.7M
[OK] InnoDB buffer pool instances: 1
[--] InnoDB Buffer Pool Chunk Size not used or defined in your version
[OK] InnoDB Read buffer efficiency: 96.73% (425820 hits/ 440195 total)
[!!] InnoDB Write Log efficiency: 0% (8 hits/ 0 total)
[OK] InnoDB log waits: 0.00% (0 waits / 8 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:
    Enable the slow query log to troubleshoot bad queries
    Reduce or eliminate unclosed connections and network issues
    Configure your accounts with ip or subnets only, then update your configuration with skip-name-resolve=1
    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
    Beware that open_files_limit (1024) variable
    should be greater than table_open_cache ( 400)
    Thread pool size for InnoDB usage (8)
Variables to adjust:
    query_cache_type (=0)
    thread_cache_size (start at 4)
    table_open_cache (> 400)
    thread_pool_size between 16 and 36 for InnoDB usage
    key_buffer_size (> 210.8M)
    innodb_buffer_pool_size (>= 322M) if possible.