more check_mysql.sh
#!/bin/sh
slave_is=($(mysql -uroot -p'zshj26@1200' -e "show slave status\G"|grep -E "Slave_.*_Running|Seconds_Behind_Master:" |awk '{print $2}'))
if [ "${slave_is[0]}" = "Yes" -a "${slave_is[1]}" = "Yes" -a "${slave_is[2]}" = "0" ]
then
echo "Slave is running"
exit 0
else
echo "Slave is not running"
exit 2
fi
思路：监控这3个值
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
#主从时延
Seconds_Behind_Master: 0
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: node1
Master_User: rep
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000026
Read_Master_Log_Pos: 730
Relay_Log_File: node2-relay-bin.000046
Relay_Log_Pos: 608
Relay_Master_Log_File: mysql-bin.000026
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 730
Relay_Log_Space: 815
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: f1996dee-8b49-11e9-8249-000c29424857
Master_Info_File: /usr/local/mysql-5.7.26-linux-glibc2.12-x86_64/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
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