python远程登录示例

最近需要看几台服务器的信息，懒得ssh登录和从网页进行查看。写了个小脚本定期向自己的邮箱发送统计状态。

# -*- coding:utf-8 -*-
#__author__ = 'ecaoyng'
# date : 20170601

import paramiko
import commands
import datetime
import time
import smtplib
from email.mime.text import MIMEText
from email.utils import formataddr


class ITKMonitor:
    def __init__(self):
        # nwids name
        self.nwids=['te2se','tlise']
        # rnc pm status
        self.pmRNC={'te2se':'',
                    'tlise':''}

        # web server info
        self.web={'IP':'131.160.56.xx',
                  'User':'itk',
                  'Pwd':'itkuser'}
        # te2se's Process server info
        self.te2seProc={'IP':'131.160.56.xx',
                        'User':'itk',
                        'Pwd':'itkuser'}
        # te2se's DB server info
        self.te2seDB={'IP':'131.160.56.xx',
                      'User':'itk',
                      'Pwd':'itkuser'}
        # tlise's Process server info
        self.tliseProc={'IP':'131.160.56.xx',
                        'User':'root',
                        'Pwd':'itk10R2014'}
        # tlise's Db server info
        self.tliseDB={'IP':'131.160.56.xx',
                      'User':'root',
                      'Pwd':'itk11R2014'}

        # server list
        self.severList=[self.web,self.te2seProc,self.te2seDB,self.tliseProc,self.tliseDB]

        # Time of 2 hours ago
        self.last2Hour=''

        # smtp mail infor
        self.stmpServer='smtp.eapac.ericsson.se'
        self.sender = '[email protected]'
        self.receiver = '[email protected]'
        self.mailContent = []








    # get time of 2 hours ago
    def get_last2hours(self):
        self.last2Hour=((datetime.datetime.now() - datetime.timedelta(minutes=120)).strftime("%Y-%m-%d %H:%M"))

    # check pm status
    def te2se_check_pm(self):
        for nwid in self.nwids:
            cmd='itkadmin pmstatus -nwid ' + nwid +' -starttime '+'\''+self.last2Hour+'\'' +' -resolution q -timeagg qhr -node allrnc'
            (status, output) = commands.getstatusoutput(cmd)
            if status == 0:
                self.pmRNC[nwid]=output
            else:
                print('Errors during exec itkadmin pmstatus... for' + nwid)
    # show pm status of rnc
    def show_rnc_pm(self):
        for key in self.pmRNC.keys():
            print('%s => %s' % (key, self.pmRNC[key]))
            self.mailContent.append('%s => %s' % (key, self.pmRNC[key]))
            self.mailContent.append('\r\n')
            print('-'*60)
            self.mailContent.append('='*100)
            self.mailContent.append('\r\n')

    # analyis pm status of rnc
    # def analysis_rnc_pm(self):
    #     for key in self.pmRNC.keys():
    #         result=self.pmRNC[key][self.pmRNC[key].rfind('Object'):]
            # awkCmd='result | awk \'print \$2\''
            # (awkStat, awkOut) = commands.getstatusoutput(awkCmd)
            # print(awkOut)



    def sshclient_execmd(self, execmd):
        paramiko.util.log_to_file("paramiko.log")
        s = paramiko.SSHClient()
        s.set_missing_host_key_policy(paramiko.AutoAddPolicy())

        for server in self.severList:
            print('%s hardware information' % server)
            self.mailContent.append('%s hardware information' % server)
            self.mailContent.append('\r\n')
            s.connect(hostname= server['IP'], port=22, username=server['User'], password=server['Pwd'])
            stdin, stdout, stderr = s.exec_command(execmd)
            stdin.write("Y")  # The first connection, need a simple interaction.
            cmdOutput=stdout.read()
            print(cmdOutput)
            self.mailContent.append(cmdOutput)
            self.mailContent.append('\r\n')
            print('='*60)
            self.mailContent.append('='*100)
            self.mailContent.append('\r\n')
            time.sleep(2)
        print ('mail content is %s' % self.mailContent)
        s.close()


    # send email
    def send_mail(self):
        resp= True
        try:

            msg = MIMEText(''.join(self.mailContent), 'plain', 'utf-8')
            msg['Subject'] = 'RECA ITK information'

            smtp = smtplib.SMTP(self.stmpServer, 25)
            smtp.sendmail(self.sender, [self.receiver,‘[email protected]’], msg.as_string())
            smtp.quit()
            print('Succeed to send email.')
        except Exception as e:
            print (e)
            resp = False
        return resp


if __name__== '__main__':
    monitor=ITKMonitor()
    monitor.sshclient_execmd('df -h')
    monitor.get_last2hours()
    monitor.te2se_check_pm()
    monitor.show_rnc_pm()
    monitor.send_mail()
    # monitor.analysis_rnc_pm()

需要注意的是需要安装一些依赖包

yum install python-devel.x86_64
yum install openssl-devel
yum install libffi-devel

#安装paramiko
tar -xzvf paramiko-2.0.2.tar.gz
cd paramiko-2.0.2
python setup.py install

如果缺少其他包，请自行安装