dispatcher bind failed

[HoboChen]

CentOS 7, MySQL 5.7, gcc 4.8.5

nohup.out is
"""
bind() error: Address already in use
bind() error: Address already in use
bind() error: Address already in use
bind() error: Address already in use
bind() error: Address already in use
bind() error: Address already in use
bind() error: Address already in use
"""

but when run sudo netstat -a | grep 5907
there is no out