1. start/ stop whole replication:
    START SLAVE;
    STOP SLAVE;
  2. start/ stop IO and SQL thread:
    START SLAVE IO_THREAD;
    START SLAVE SQL_THREAD;STOP SLAVE IO_THREAD;
    STOP SLAVE SQL_THREAD;
  3. show status of replication:
    SHOW MASTER STATUS;
    SHOW SLAVE STATUS\G
  4. show slaves:
    SHOW SLAVE HOSTS;