Python 脚本 监控数据库状态

打算用这个脚本通过zabbix 监控Mariadb的，无奈要等Mariadb完全上线才行，所以先写一个粗略大致功能的版本。

#coding:utf-8
#author:shiyiwen
#version:1.1
#display:monitor mariadb galera cluster
import os
import sys
import MySQLdb
import subprocess
import time
import re

def mysqlprocessstatus():
    runcmd = 'service mysql start'
    p = subprocess.Popen('netstat -ntlp|grep mysql',shell=True,stdout=subprocess.PIPE)  #将stdout缓存进pipe
    #p1 = subprocess.Popen('grep java',shell=True,stdin=p.stdout,stdout=subprocess.PIPE) #筛选出mysql进程并存入stdout
    status = p.stdout.readlines()
    if len(status) > 0:
        return 'Sucess'
    else:
        sys.stderr.write('%s process down, running [%s] \n' % ('Mysql',runcmd))
        subprocess.Popen(runcmd,shell=True)
        if len(status) == 0:
            return 'Mysql Down'

def initconn():
    try:
        conn = MySQLdb.connect(host='172.16.38.175', user='root', passwd='anjubao.com', port=3306)
        return conn
    except MySQLdb.Connect().Error,e:
        print "Mysql connet Error"

def clusterwsrepstatus(conn,item):

    query = 'show status like "wsrep%"'
    cur = conn.cursor()
    cur.execute(query)                      #返回code 这个code 为 数据条数，也可以通过fetchmany来接受数据，但是要指定数据条数，对没错就是这个code!
    result = cur.fetchall()                 #直接接受所有数据,返回多个tuple
    conn.commit()                           #真正commit DDL DML
    cur.close()
    for t in  result:
        for i in t:
            if i == item:
                return t[1]

def analysis():
    pass

def execerror():
    pass

def insertdb():
    pass

if __name__ == '__main__':
    #mysqlprocessstatus()
    wsrep_conn=clusterwsrepstatus(initconn(),'wsrep_connected')
    wsrep_uuid=clusterwsrepstatus(initconn(),'wsrep_cluster_state_uuid')
    wsrep_size=clusterwsrepstatus(initconn(),'wsrep_cluster_size')

    if wsrep_conn=='on' and wsrep_size=='3' and wsrep_uuid=='BBBB-BBBB':
        print "mengmengda"
    else:
        print "Error"

用pip安装MySQLdb库，需要会提示找不到Python.h 需要安装python-dev(ubuntu)  pip install MySql-python

里面包含了许多基础知识，怕忘记 记录一下。