故障排错脚本
由于近来公司的服务器经常会出点小问题，基于各种原因要去排错。这里我用python写了一个脚本，主要四调用os模块操作。有一个是要统计mysql最大连接数的。因为好像python不支持"show processlist"，所以自己写了一个模块mysqlconn.py。放在/python目录下。这个模块的作用主要是执行“sh /python/mysqlconn.sh”.这个脚本。然后脚本会生成一个叫mysqlconn.txt文件放到：/python/mysqlconn.txt下面。主要是统计当前连接数。和mysql默认允许的最大连接数。
最后一个要说的就是，我的代码更新目录是：/www/zhs/tool（测试环境）。更新之前上次到:/python目录，然后用for去统计文件。先备份到/tmp的目录下：下面是部分内容效果(代码比较简单，这里不做说明开始部分的登录账号是：xiaoluo.密码是：123456)：
代码展示：(复制即可使用)
#!/usr/bin/env python
import os
import fileinput
import mysqlconn
while True:
name=raw_input("please input name:").strip()
if name !="xiaoluo":
print "please try agine:"
continue
password=raw_input("please input your password:").strip()
if password !="123456":
print "please try agine:"
continue
break
while True:
print "1.webserver:[1]"
print "2.mysqlserver:[2]"
print "3.update code:[3]"
choose=raw_input("your server is:")
if choose=="1":
user=os.getlogin()
print user
userlogin=os.system("w | grep 192|wc -l")
userlogin=raw_input('check your free io:[y/n](60)')
if userlogin=="y":
io=os.system("iostat|awk 'NR==4{print $NF}'|cut -f 1 -d .|grep -v ^0$")
# print io
else:
pass
cpu=raw_input("check your free cpu:[y/n]")
if cpu=="y":
cpu_idle=os.system("top -b -n 1 | grep Cpu | awk '{print $5}' | cut -f 1 -d .")
else:
pass
swap=raw_input("check your free_swap:[y/n]")
if swap=="y":
free_swap=os.system("/usr/bin/free -m|grep Mem|awk '{print $4}'")
else:
pass
web_load=raw_input("check your load:[y/n](18)")
if web_load=="y":
web_load=os.system("uptime|awk '{print $NF}'|cut -f 1 -d .")
else:
pass
user_disk=raw_input("check your uses disk:[y/n]")
if user_disk=="y":
user_load=os.system("df -H|sort -k5nr|grep -vE 'Filesystem|tmpfs|cdrom'|awk '{print $5 " " $1}'")
else:
pass
tcp_connection=raw_input("check your tcp connection:[y/n]" )
if tcp_connection=="y":
tcp_connection=os.system("netstat -nat |grep 80|awk '{print $6}'|sort|uniq -c|sort -rn")
else:
pass
top_ip=raw_input("check yout top ip connection:[y/n]")
if top_ip=="y":
top_ip=os.system("netstat -anlp|grep 80|grep tcp|awk '{print $5}'|awk -F: '{print $1}'|sort|uniq -c|sort -nr|head -n20")
else:
pass
if choose=="2":
mysqluser=raw_input("please input mysql user:").strip()
if len(mysqluser)==0:
print "empty mysqluser,try again"
continue
else:
pass
mysqlpassword=raw_input("please input mysql password:").strip()
if len(mysqlpassword)==0:
print "empty mysqluser,try again"
continue
else:
pass
host=raw_input("please input mysql host:").strip()
if len(host)==0:
print "empty mysqluser,try again"
continue
else:
pass
user=os.getlogin()
print user
userlogin=os.system("w | grep 192|wc -l")
userlogin=raw_input(' check your io:[y/n]')
if userlogin=="y":
io=os.system("iostat|awk 'NR==4{print $NF}'|cut -f 1 -d .|grep -v ^0$")
# print io
else:
pass
cpu=raw_input("check your free cpu:[y/n]")
if cpu=="y":
cpu_idle=os.system("top -b -n 1 | grep Cpu | awk '{print $5}' | cut -f 1 -d .")
else:
pass
swap=raw_input("check your free_swap:[y/n]")
if swap=="y":
free_swap=os.system("/usr/bin/free -m|grep Mem|awk '{print $4}'")
else:
pass
web_load=raw_input("check your load:[y/n]")
if web_load=="y":
web_load=os.system("uptime|awk '{print $NF}'|cut -f 1 -d .")
else:
pass
user_disk=raw_input("check your uses disk:[y/n]")
if user_disk=="y":
user_load=os.system("df -H|sort -k5nr|grep -vE 'Filesystem|tmpfs|cdrom'|awk '{print $5 " " $1}'")
else:
pass
mysql_prolist=raw_input("check your mysql Curren connection:[y/n]")
if mysql_prolist=="y":
f=open("/python/mysqlconn.txt")
u=f.readline()
print u
mysql_MAX_prolist=raw_input("check your mysql max_connection:[y/n] ")
if mysql_MAX_prolist=="y":
f1=open("/python/mysqlconn.txt")
u1=f.readlines()
for line in u1:
print line
if choose=="3":
name=raw_input("please input your well update package:(.tar)").strip()
if len(name)==0:
print "empty mysqluser,try again"
continue
else:
pass
# os.system("cd /python/%s" %(name))
w=os.listdir('/python/%s'%(name))
print w
# for line in w:
backup=os.system("mkdir /tmp/`date +%Y%m%d`")
for line in w:
os.system("cp -r /www/zhs/%s/%s /tmp/%s" %(name,line,backup))
os.system("cp -rf /python/%s/* /www/zhs/%s/" %(name,name))
第二、mysqlconn.py模块代码：
#!/usr/bin/env python
#xiaoluo
import os
os.system("sh /python/mysqlconn.sh")
第三、mysqlconn.sh脚本用来收集信息。在使用的时候根据自己服务器的ip地址修改一下就好了：
#!/bin/bash
#xiaoluo
#18878774260
mysql -uroot -p123456 -h 192.168.38.131 -e "show processlist"|grep -v localhost|wc -l > /python/mysqlconn.txt
mysql -uroot -p123456 -h 192.168.38.131 -e "show variables like 'max_connections'"|grep max | awk '{print$2}' >>/python/mysqlconn.txt
