Python监控RAID健康状况

环境：Ubuntu 64 工具：MegaCli Python 2.7

一、MegaCli在Ubuntu下的安装

　　可以在这里下载到你需要的MegaCli的zip包。 　　解压之后得到一个rpm的安装包，对于 Redhat系的Linux系统可以直接通过yum安装，Ubuntu系统需要额外的操作：

rpm2cpio MegaCli-8.07.14-1.noarch.rpm | cpio -dimv

　　完成之后会在当前目录下多了一个opt的目录。找到里面的可执行文件可以直接执行了。先看下效果：

root@salt-minion2:~#sudo ./opt/MegaRAID/MegaCli/MegaCli64 -AdpAllInfo -aAll Adapter #0 ============================================================================== Versions ================ Product Name : PERC H700 Adapter Serial No : 1C601NX FW Package Build: 12.10.1-0001 Mfg. Data ================ Mfg. Date : 12/07/11 Rework Date : 12/07/11 Revision No : A05 Battery FRU : N/A Image Versions in Flash: ================ BIOS Version : 3.18.00_4.09.05.00_0x0416A000 FW Version : 2.100.03-1062 Preboot CLI Version: 04.04-010:#%00008 Ctrl-R Version : 2.02-0025 NVDATA Version : 2.07.03-0003 Boot Block Version : 2.02.00.00-0000 BOOT Version : 01.250.04.219 Pending Images in Flash ================ None ......

二、采集整理需要的信息

　　MegaCli 工具的功能有很多，具体可以sudo ./opt/MegaRAID/MegaCli/MegaCli64 -h查看，这里主要用来监控RAID健康状况。主要用到下面两条命令。

MegaCli64 -AdpAllInfo -aAll #查看RAID卡信息 MegaCli64 -PDList -aALL #查看硬盘信息

　　下面看下具体需要采集的信息：

root@zhi:~# ./opt/MegaRAID/MegaCli/MegaCli64 -AdpAllInfo -aAll Adapter #0 ============================================================================== Versions ================ Product Name : PERC H700 Adapter Serial No : 1C601NX FW Package Build: 12.10.1-0001 ... Device Present ================ Virtual Drives : 3 Degraded : 0 Offline : 0 Physical Devices : 4 Disks : 3 Critical Disks : 0 Failed Disks : 0 ... root@zhi:~# ./opt/MegaRAID/MegaCli/MegaCli64 -PDList -aALL Adapter #0 Enclosure Device ID: 32 Slot Number: 0 Drives position: DiskGroup: 0, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 0 WWN: 5000C5001D5F0CA0 Sequence Number: 2 Media Error Count: 0 #代表扇区有问题，坏道等,数值越大越严重。 Other Error Count: 0 #代表磁盘可能有松动 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SAS

主要就是采集上面这些信息了，下面通过Python脚本对文本处理后上报，通过邮件报警或者页面提示都可以。

#! /usr/bin/env python # -*- coding: utf-8 -*- # --------------------------------------------- # Filename: # Author: zhi # Mail: 937042882@qq.com # Version: 0.0.1 # LastChange: # --------------------------------------------- import re import subprocess def read_raid_info(): try: allInfo = subprocess.check_output(['/root/MegaRAID/MegaCli/MegaCli64','-AdpAllInfo','-aALL']) except OSError,e: return None return (i for i in allInfo.split('\n\n') if i) def get_raid_info(info): detail_info = {} version = re.compile(r'Versions') name = re.compile(r'Product Name') device = re.compile(r'Device Present') colon = re.compile(r':') for i in info: if version.search(i): for eachLine in i.split('\n'): if name.search(eachLine): detail_info['Product Name'] = eachLine.split(':')[1].strip() if device.search(i): for eachLine in i.split('\n'): if colon.search(eachLine): detail_info[eachLine.split(':')[0].strip()] = eachLine.split(':')[1].strip() return detail_info def read_disk_info(): try: allInfo = subprocess.check_output(['/root/MegaRAID/MegaCli/MegaCli64','-PDList','-aALL']) except OSError,e: return None return (i for i in allInfo.split('\n') if i) def get_disk_info(info): media = re.compile(r'Media Error Count') other = re.compile(r'Other Error Count') media_count = 0 other_count = 0 for i in info: if media.match(i): if i.split(':')[1].strip() != '0': media_count += 1 if other.match(i): if i.split(':')[1].strip() != '0': other_count += 1 detail_info = {'MediaErrorCount':str(media_count),'OtherErrorCount':str(other_count)} return detail_info def main(): all_info = {} raid_info = read_raid_info() disk_info = read_disk_info() if raid_info: all_info.update(get_raid_info(raid_info)) else: print 'No megacli client.' return None if disk_info: all_info.update(get_raid_info(disk_info)) return all_info

得到结果如下：

{'Failed Disks': '0', 'Physical Devices': '3', 'Disks': '3', 'MediaErrorCount': '1', 'Virtual Drives': '3', 'Product Name': 'PERC H310 Mini', 'Critical Disks': '0', 'Offline': '0', 'OtherErrorCount': '0', 'Degraded': '0'}