my.cnf and mysql auto shutdown

[sa3dy]

I have a very busy website in this server:

12 Cores E5-1650 v3 @ 3.50GHz
128GB RAM

MySQL 5.6
CentOS 7.4


/var/lib/mysql/.com.err

2017-11-10 17:10:24 27901 [Note] Giving 1 client threads a chance to die gracefully
2017-11-10 17:10:24 27901 [Note] Event Scheduler: Purging the queue. 0 events
2017-11-10 17:10:24 27901 [Note] Shutting down slave threads
2017-11-10 17:10:26 27901 [Note] Forcefully disconnecting 0 remaining clients
2017-11-10 17:10:26 27901 [Note] Binlog end
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'partition'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_METRICS'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_CMPMEM'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_CMP'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_LOCKS'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'INNODB_TRX'
2017-11-10 17:10:26 27901 [Note] Shutting down plugin 'InnoDB'
2017-11-10 17:10:26 27901 [Note] InnoDB: FTS optimize thread exiting.
2017-11-10 17:10:26 27901 [Note] InnoDB: Starting shutdown...
2017-11-10 17:10:28 27901 [Note] InnoDB: Shutdown completed; log sequence number 6041482
2017-11-10 17:10:28 27901 [Note] Shutting down plugin 'BLACKHOLE'
2017-11-10 17:10:28 27901 [Note] Shutting down plugin 'ARCHIVE'
2017-11-10 17:10:28 27901 [Note] Shutting down plugin 'MRG_MYISAM'
2017-11-10 17:10:28 27901 [Note] Shutting down plugin 'MyISAM'
2017-11-10 17:10:28 27901 [Note] Shutting down plugin 'MEMORY'
2017-11-10 17:10:28 27901 [Note] Shutting down plugin 'CSV'
2017-11-10 17:10:28 27901 [Note] Shutting down plugin 'sha256_password'
2017-11-10 17:10:28 27901 [Note] Shutting down plugin 'mysql_old_password'
2017-11-10 17:10:28 27901 [Note] Shutting down plugin 'mysql_native_password'
2017-11-10 17:10:28 27901 [Note] Shutting down plugin 'binlog'
2017-11-10 17:10:28 27901 [Note] /usr/sbin/mysqld: Shutdown complete

I have this my.cnf config:

[mysqld]
performance-schema=0
local-infile=0
skip-external-locking
skip-networking
default-storage-engine = innodb
innodb_buffer_pool_size = 256M
innodb_file_per_table = 1
#innodb_file_format = Barracuda
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 40M
innodb_log_file_size = 32M
#innodb_additional_mem_pool_size = 200M
innodb_thread_concurrency = 8
innodb_buffer_pool_instances=1
long_query_time         = 1
slow_query_log=OFF
#log_slow_queries=OFF
local-infile=0
max_connect_errors=20
max_connections=1500
table_open_cache=250
max_user_connections=400
max_allowed_packet=524288000
max_error_count=64
max_sort_length=1024
interactive_timeout=30
wait_timeout=10
connect_timeout=15
query_cache_limit=10M
query_cache_size=0
tmp_table_size=128M
max_heap_table_size=256M
bind-address=127.0.0.1
query_cache_type= OFF
key_buffer_size=1024M   ## depends on your Indexes size, default 1024M
key_buffer=3072M
sort_buffer_size=24M
read_buffer_size=24M
read_rnd_buffer_size=24M
thread_cache_size=2045
thread_concurrency=16
myisam_sort_buffer_size=24M

performance-schema=0

performance-schema=0
open_files_limit=41000
[mysqldump]
quick
max_allowed_packet=2048M

Any idea or recommendations please?

 

[cPanelMichael]

Hello,

You could start by using a MySQL tuning script like the one referenced on the following thread:

mysqlmymonlite.sh server stats gathering tool for cPanel Server

Thank you.