监控MySQL主从同步的脚本
时间: 2023-12-02 20:03:42 浏览: 110
Shell脚本实现监控MySQL主从同步
好的,下面给您提供一个简单的监控MySQL主从同步的脚本,使用Python编写:
```python
import pymysql
import time
import smtplib
from email.mime.text import MIMEText
from email.header import Header
# MySQL主库和从库的配置信息
master_config = {
'host': 'master_host',
'port': 3306,
'user': 'username',
'password': 'password'
}
slave_config = {
'host': 'slave_host',
'port': 3306,
'user': 'username',
'password': 'password'
}
# 邮件发送配置信息
mail_host = 'smtp.gmail.com'
mail_port = 587
mail_user = 'your_email'
mail_password = 'your_password'
sender = 'your_email'
receivers = ['receiver_email']
def check_slave_status():
# 连接MySQL从库
slave_conn = pymysql.connect(**slave_config)
slave_cursor = slave_conn.cursor()
# 执行SHOW SLAVE STATUS命令,获取从库状态信息
slave_cursor.execute('SHOW SLAVE STATUS')
slave_status = slave_cursor.fetchone()
# 关闭从库连接
slave_cursor.close()
slave_conn.close()
# 判断从库状态是否正常
if slave_status[10] == 'Yes' and slave_status[11] == 'Yes':
return True
else:
return False
def send_mail(content):
# 构造邮件内容
message = MIMEText(content, 'plain', 'utf-8')
message['From'] = Header("MySQL监控", 'utf-8')
message['To'] = Header("管理员", 'utf-8')
message['Subject'] = Header("MySQL主从同步异常", 'utf-8')
# 发送邮件
smtpObj = smtplib.SMTP(mail_host, mail_port)
smtpObj.starttls()
smtpObj.login(mail_user, mail_password)
smtpObj.sendmail(sender, receivers, message.as_string())
smtpObj.quit()
if __name__ == '__main__':
while True:
# 连接MySQL主库
master_conn = pymysql.connect(**master_config)
master_cursor = master_conn.cursor()
# 执行一条SQL语句,插入一条测试数据
insert_sql = "INSERT INTO test_table (name, age) VALUES ('test', 18)"
master_cursor.execute(insert_sql)
# 关闭主库连接
master_cursor.close()
master_conn.close()
# 检查从库状态
if not check_slave_status():
# 发送告警邮件
send_mail('MySQL主从同步异常,请及时处理!')
# 每隔30秒执行一次
time.sleep(30)
```
这个脚本的作用是每隔30秒向MySQL主库插入一条测试数据,并检查从库的状态是否正常。如果从库状态异常,则会发送一封告警邮件。需要注意的是,这只是一个简单的示例,实际应用中需要根据具体情况进行调整和优化。
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