mysql – ERROR 1794 (HY000): The slave is not configured or could not be properly initialized

This is my my.cnf file

[mysqld]

server_id = 1
log_bin = /var/log/mysql/mysql-bin.log
log_bin_index = /var/log/mysql/mysql-bin.log.index
relay_log = / var / log / mysql / mysql-relay-bin
relay_log_index = /var/log/mysql/mysql-relay-bin.index
expire_logs_days = 10
max_binlog_size = 100M
log_slave_updates = 1
Auto-increment increment = 2
Auto increment offset = 1
Binding address = 0.0.0.0

I clearly mentioned the server-d in my.cnf, but I get this error when I stop the slave.

Stop slave;
ERROR 1794 (HY000): Slave is not configured or could not be initialized properly. You must set at least –server-id to enable either a master or a slave. Additional error messages can be found in the MySQL error log.

Anyone can help me as soon as possible.