Python [demo] Get Linux system host information

This script works for centos,redhat
This script is suitable for accurately obtaining ip address information under the condition of multiple network cards, such as in the presence of: lo, eth0, ens99, br, docker0
This script is only suitable for obtaining local host information and cannot be batched remotely.

Use python code to collect system information of the host, mainly:

hostname
IP
system version
server manufacturer
model
serial number
CPU information
System information such as memory.

#!/usr/bin/env python
#encoding: utf-8

'''
收集主机的信息：
主机名称、IP、系统版本、服务器厂商、型号、序列号、CPU信息、内存信息
'''

from subprocess import Popen, PIPE
import os,sys

''' 获取 ifconfig 命令的输出 '''
def getIfconfig():
    p = Popen(['ifconfig'], stdout = PIPE)
    data = p.stdout.read()

    return data

''' 获取 dmidecode 命令的输出 '''
def getDmi():
    p = Popen(['dmidecode'], stdout = PIPE)
    data = p.stdout.read()
    return data

''' 根据空行分段落 返回段落列表'''
def parseData(data):
    parsed_data = []
    new_line = ''
    data = [i for i in data.split('\n') if i]
    for line in data:
        if line[0].strip():
            parsed_data.append(new_line)
            new_line = line + '\n'
        else:
            new_line += line + '\n'
    return [i for i in parsed_data if i]

''' 根据输入的段落数据分析出ifconfig的每个网卡ip信息 '''
def parseIfconfig(parsed_data):
    dic = {
    
    }
    parsed_data = [i for i in parsed_data if i.startswith('e')]
    for lines in parsed_data:
        line_list = lines.split('\n')
        devname = line_list[0].split()[0]
        macaddr = line_list[0].split()[-1]
        ipaddr  = line_list[1].split()[1].split(':')[0]
       
        break
    dic['ip'] = ipaddr
    return dic

''' 根据输入的dmi段落数据 分析出指定参数 '''
def parseDmi(parsed_data):
    dic = {
    
    }
    parsed_data = [i for i in parsed_data if i.startswith('System Information')]
    parsed_data = [i for i in parsed_data[0].split('\n')[1:] if i]
    dmi_dic = dict([i.strip().split(':') for i in parsed_data])
    dic['vender'] = dmi_dic['Manufacturer'].strip()
    dic['product'] = dmi_dic['Product Name'].strip()
    dic['sn'] = dmi_dic['Serial Number'].strip()
    return dic

''' 获取Linux系统主机名称 '''
def getHostname():
    import socket
    hostname = socket.gethostname()
#    with open('/etc/sysconfig/network') as fd:
#        for line in fd:
#            if line.startswith('HOSTNAME'):
#                hostname = line.split('=')[1].strip()
#                break
#    print hostname
    return {
    
    'hostname':hostname}

''' 获取Linux系统的版本信息 '''
def getOsVersion():
    with open('/etc/issue') as fd:
        for line in fd:
            osver = line.strip()
            break
    return {
    
    'osver':osver}

''' 获取CPU的型号和CPU的核心数 '''
def getCpu():
    num = 0
    with open('/proc/cpuinfo') as fd:
        for line in fd:
            if line.startswith('processor'):
                num += 1
            if line.startswith('model name'):
                cpu_model = line.split(':')[1].strip().split()
                cpu_model = cpu_model[0] + ' ' + cpu_model[2]  + ' ' + cpu_model[-1]
    return {
    
    'cpu_num':num, 'cpu_model':cpu_model}

''' 获取Linux系统的总物理内存 '''
def getMemory():
    with open('/proc/meminfo') as fd:
        for line in fd:
            if line.startswith('MemTotal'):
                mem = int(line.split()[1].strip())
                break
    mem = '%.f' % (mem / 1024.0) + ' MB'
    return {
    
    'Memory':mem}

if __name__ == '__main__':
    dic = {
    
    }
    data_ip = getIfconfig()
    parsed_data_ip = parseData(data_ip)
    ip = parseIfconfig(parsed_data_ip)
    
    data_dmi = getDmi()
    parsed_data_dmi = parseData(data_dmi)
    dmi = parseDmi(parsed_data_dmi)

    hostname = getHostname()
    osver = getOsVersion()
    cpu = getCpu()
    mem = getMemory()
    
    dic.update(ip)
    dic.update(dmi)
    dic.update(hostname)
    dic.update(osver)
    dic.update(cpu)
    dic.update(mem)

    ''' 将获取到的所有数据信息并按简单格式对齐显示 '''
    for k,v in dic.items():
        print '%-10s:%s' % (k, v)

implement:

$ python host_info.py
product   :VMware Virtual Platform
osver     :\S
sn        :VMware-56 4d b1 93 b5 b5 d4 72-5f b2 e6 1d ea cd 41 a0
Memory    :7803 MB
cpu_num   :4
ip        :192.168.211.100
vender    :VMware, Inc.
hostname  :ghostwritten.com
cpu_model :Intel(R) i7-6600U 2.60GHz

✈ Recommended reading:

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Python [demo] Get Linux system host information

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