mysql 5.7.21 does not start on system reboot

[Gary Mills]

I am using MySQL 5.7.21 and it is working ok, my application accesses it just fine. normal operations as expected.
HOWEVER, on an OS reboot, mysql 5.7.21 does not start up after reboot.

The daemon service is added to the RC resource control of OS.

chkconfig --list | grep mysql.server
mysql.server 0:off 1:off 2:on 3:on 4:on 5:on 6:off

/etc/my.cnf
[mysqld]
local-infile=0
skip-external-locking
skip-name-resolve
query_cache_limit=1M
query_cache_size=32M
query_cache_type=1
max_connections=500
max_allowed_packet=256M
interactive_timeout=1000
wait_timeout=10000
connect_timeout=10000
thread_cache_size=128
key_buffer_size=16M
join_buffer_size=1M
max_allowed_packet=16M
sort_buffer_size=2M
read_buffer_size=2M
max_connect_errors=10
myisam_sort_buffer_size=64M
server-id=1

[client]
socket=/tmp/mysql.sock

[safe_mysqld]
err-log=/var/log/mysqld.log
open_files_limit=8192

[mysqldump]
quick
max_allowed_packet=16M

[mysql]
no-auto-rehash
#safe-updates

[isamchk]
key_buffer=64M
sort_buffer=64M
read_buffer_size=16M
write_buffer=16M

[myisamchk]
key_buffer=64M
sort_buffer=64M
read_buffer_size=16M
write_buffer=16M

[mysqlhotcopy]
interactive-timeout

is there a known problem with mysql 5.7.21 not starting after OS system reboot?

Gary L Mills