超硬核！11 个非常实用的 Python 和 Shell 拿来就用脚本实例！

作者：养乐多编辑：JackTian
来源：公众号「杰哥的IT之旅」
ID：Jake_Internet
转载请联系授权（微信ID：Hc220088）

不得不说，脚本在我们的日常工作中可以提高很大的工作效率，的确很香！

这次再来给大家分享一波我工作中用到的几个脚本，主要分为：Python和Shell两个部分。

Python 脚本部分实例：企业微信告警、FTP 客户端、SSH 客户端、Saltstack 客户端、vCenter 客户端、获取域名 ssl 证书过期时间、发送今天的天气预报以及未来的天气趋势图；

Shell 脚本部分实例：SVN 完整备份、Zabbix 监控用户密码过期、构建本地 YUM 以及上篇文章中有读者的需求（负载高时，查出占用比较高的进程脚本并存储或推送通知）；

篇幅有些长，还请大家耐心翻到文末，毕竟有彩蛋。

Python 脚本部分

企业微信告警

此脚本通过企业微信应用，进行微信告警，可用于 Zabbix 监控。

# -*- coding: utf-8 -*-import requests
import jsonclass DLF:def __init__(self, corpid, corpsecret):self.url = "https://qyapi.weixin.qq.com/cgi-bin"self.corpid = corpidself.corpsecret = corpsecretself._token = self._get_token()def _get_token(self):'''获取企业微信API接口的access_token:return:'''token_url = self.url + "/gettoken?corpid=%s&corpsecret=%s" %(self.corpid, self.corpsecret)try:res = requests.get(token_url).json()token = res['access_token']return tokenexcept Exception as e:return str(e)def _get_media_id(self, file_obj):get_media_url = self.url + "/media/upload?access_token={}&type=file".format(self._token)data = {"media": file_obj}try:res = requests.post(url=get_media_url, files=data)media_id = res.json()['media_id']return media_idexcept Exception as e:return str(e)def send_text(self, agentid, content, touser=None, toparty=None):send_msg_url = self.url + "/message/send?access_token=%s" % (self._token)send_data = {"touser": touser,"toparty": toparty,"msgtype": "text","agentid": agentid,"text": {"content": content}}try:res = requests.post(send_msg_url, data=json.dumps(send_data))except Exception as e:return str(e)def send_image(self, agentid, file_obj, touser=None, toparty=None):media_id = self._get_media_id(file_obj)send_msg_url = self.url + "/message/send?access_token=%s" % (self._token)send_data = {"touser": touser,"toparty": toparty,"msgtype": "image","agentid": agentid,"image": {"media_id": media_id}}try:res = requests.post(send_msg_url, data=json.dumps(send_data))except Exception as e:return str(e)

FTP 客户端

通过 ftplib 模块操作 ftp 服务器，进行上传下载等操作。

# -*- coding: utf-8 -*-from ftplib import FTP
from os import path
import copyclass FTPClient:def __init__(self, host, user, passwd, port=21):self.host = hostself.user = userself.passwd = passwdself.port = portself.res = {'status': True, 'msg': None}self._ftp = Noneself._login()def _login(self):'''登录FTP服务器:return: 连接或登录出现异常时返回错误信息'''try:self._ftp = FTP()self._ftp.connect(self.host, self.port, timeout=30)self._ftp.login(self.user, self.passwd)except Exception as e:return edef upload(self, localpath, remotepath=None):'''上传ftp文件:param localpath: local file path:param remotepath: remote file path:return:'''if not localpath: return 'Please select a local file. '# 读取本地文件# fp = open(localpath, 'rb')# 如果未传递远程文件路径，则上传到当前目录，文件名称同本地文件if not remotepath:remotepath = path.basename(localpath)# 上传文件self._ftp.storbinary('STOR ' + remotepath, localpath)# fp.close()def download(self, remotepath, localpath=None):'''localpath:param localpath: local file path:param remotepath: remote file path:return:'''if not remotepath: return 'Please select a remote file. '# 如果未传递本地文件路径，则下载到当前目录，文件名称同远程文件if not localpath:localpath = path.basename(remotepath)# 如果localpath是目录的话就和remotepath的basename拼接if path.isdir(localpath):localpath = path.join(localpath, path.basename(remotepath))# 写入本地文件fp = open(localpath, 'wb')# 下载文件self._ftp.retrbinary('RETR ' + remotepath, fp.write)fp.close()def nlst(self, dir='/'):'''查看目录下的内容:return: 以列表形式返回目录下的所有内容'''files_list = self._ftp.nlst(dir)return files_listdef rmd(self, dir=None):'''删除目录:param dir: 目录名称:return: 执行结果'''if not dir: return 'Please input dirname'res = copy.deepcopy(self.res)try:del_d = self._ftp.rmd(dir)res['msg'] = del_dexcept Exception as e:res['status'] = Falseres['msg'] = str(e)return resdef mkd(self, dir=None):'''创建目录:param dir: 目录名称:return: 执行结果'''if not dir: return 'Please input dirname'res = copy.deepcopy(self.res)try:mkd_d = self._ftp.mkd(dir)res['msg'] = mkd_dexcept Exception as e:res['status'] = Falseres['msg'] = str(e)return resdef del_file(self, filename=None):'''删除文件:param filename: 文件名称:return: 执行结果'''if not filename: return 'Please input filename'res = copy.deepcopy(self.res)try:del_f = self._ftp.delete(filename)res['msg'] = del_fexcept Exception as e:res['status'] = Falseres['msg'] = str(e)return resdef get_file_size(self, filenames=[]):'''获取文件大小,单位是字节判断文件类型:param filename: 文件名称:return: 执行结果'''if not filenames: return {'msg': 'This is an empty directory'}res_l = []for file in filenames:res_d = {}# 如果是目录或者文件不存在就会报错try:size = self._ftp.size(file)type = 'f'except:# 如果是路径的话size显示 - , file末尾加/ （/dir/）size = '-'type = 'd'file = file + '/'res_d['filename'] = fileres_d['size'] = sizeres_d['type'] = typeres_l.append(res_d)return res_ldef rename(self, old_name=None, new_name=None):'''重命名:param old_name: 旧的文件或者目录名称:param new_name: 新的文件或者目录名称:return: 执行结果'''if not old_name or not new_name: return 'Please input old_name and new_name'res = copy.deepcopy(self.res)try:rename_f = self._ftp.rename(old_name, new_name)res['msg'] = rename_fexcept Exception as e:res['status'] = Falseres['msg'] = str(e)return resdef close(self):'''退出ftp连接:return:'''try:# 向服务器发送quit命令self._ftp.quit()except Exception:return 'No response from server'finally:# 客户端单方面关闭连接self._ftp.close()

SSH 客户端

此脚本仅用于通过 key 连接，如需要密码连接，简单修改下即可。

# -*- coding: utf-8 -*-import paramikoclass SSHClient:def __init__(self, host, port, user, pkey):self.ssh_host = hostself.ssh_port = portself.ssh_user = userself.private_key = paramiko.RSAKey.from_private_key_file(pkey)self.ssh = Noneself._connect()def _connect(self):self.ssh = paramiko.SSHClient()self.ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())try:self.ssh.connect(hostname=self.ssh_host, port=self.ssh_port, username=self.ssh_user, pkey=self.private_key, timeout=10)except:return 'ssh connect fail'def execute_command(self, command):stdin, stdout, stderr = self.ssh.exec_command(command)out = stdout.read()err = stderr.read()return out, errdef close(self):self.ssh.close()

Saltstack 客户端

通过 api 对 Saltstack 服务端进行操作，执行命令。

#!/usr/bin/env python
# -*- coding:utf-8 -*-import requests
import json
import copyclass SaltApi:"""定义salt api接口的类初始化获得token"""def __init__(self):self.url = "http://172.85.10.21:8000/"self.username = "saltapi"self.password = "saltapi"self.headers = {"Content-type": "application/json"}self.params = {'client': 'local', 'fun': None, 'tgt': None, 'arg': None}self.login_url = self.url + "login"self.login_params = {'username': self.username, 'password': self.password, 'eauth': 'pam'}self.token = self.get_data(self.login_url, self.login_params)['token']self.headers['X-Auth-Token'] = self.tokendef get_data(self, url, params):'''请求url获取数据:param url: 请求的url地址:param params: 传递给url的参数:return: 请求的结果'''send_data = json.dumps(params)request = requests.post(url, data=send_data, headers=self.headers)response = request.json()result = dict(response)return result['return'][0]def get_auth_keys(self):'''获取所有已经认证的key:return:'''data = copy.deepcopy(self.params)data['client'] = 'wheel'data['fun'] = 'key.list_all'result = self.get_data(self.url, data)try:return result['data']['return']['minions']except Exception as e:return str(e)def get_grains(self, tgt, arg='id'):"""获取系统基础信息:tgt: 目标主机:return:"""data = copy.deepcopy(self.params)if tgt:data['tgt'] = tgtelse:data['tgt'] = '*'data['fun'] = 'grains.item'data['arg'] = argresult = self.get_data(self.url, data)return resultdef execute_command(self, tgt, fun='cmd.run', arg=None, tgt_type='list', salt_async=False):"""执行saltstack 模块命令，类似于salt '*' cmd.run 'command':param tgt: 目标主机:param fun: 模块方法 可为空:param arg: 传递参数 可为空:return: 执行结果"""data = copy.deepcopy(self.params)if not tgt: return {'status': False, 'msg': 'target host not exist'}if not arg:data.pop('arg')else:data['arg'] = argif tgt != '*':data['tgt_type'] = tgt_typeif salt_async: data['client'] = 'local_async'data['fun'] = fundata['tgt'] = tgtresult = self.get_data(self.url, data)return resultdef jobs(self, fun='detail', jid=None):"""任务:param fun: active, detail:param jod: Job ID:return: 任务执行结果"""data = {'client': 'runner'}data['fun'] = funif fun == 'detail':if not jid: return {'success': False, 'msg': 'job id is none'}data['fun'] = 'jobs.lookup_jid'data['jid'] = jidelse:return {'success': False, 'msg': 'fun is active or detail'}result = self.get_data(self.url, data)return result

更多关于 Saltstack 相关的原创文章可参考：

Saltstack 集中化管理平台安装
利用 Saltstack 远程执行命令
跟我学 Saltstack 常用模块及 API
如何在 Saltstack 组件下收集被控主机的信息？
如何通过 Saltstack pillar 组件定义与被控主机相关的任何数据？

vCenter 客户端

通过官方 SDK 对 vCenter 进行日常操作，此脚本是我用于 cmdb 平台的，自动获取主机信息，存入数据库。

from pyVim.connect import SmartConnect, Disconnect, SmartConnectNoSSL
from pyVmomi import vim
from asset import models
import atexitclass Vmware:def __init__(self, ip, user, password, port, idc, vcenter_id):self.ip = ipself.user = userself.password = passwordself.port = portself.idc_id = idcself.vcenter_id = vcenter_iddef get_obj(self, content, vimtype, name=None):'''列表返回,name 可以指定匹配的对象'''container = content.viewManager.CreateContainerView(content.rootFolder, vimtype, True)obj = [ view for view in container.view ]return objdef get_esxi_info(self):# 宿主机信息esxi_host = {}res = {"connect_status": True, "msg": None}try:# connect this thingsi = SmartConnectNoSSL(host=self.ip, user=self.user, pwd=self.password, port=self.port, connectionPoolTimeout=60)except Exception as e:res['connect_status'] = Falsetry:res['msg'] = ("%s Caught vmodl fault : " + e.msg) % (self.ip)except Exception as e:res['msg'] = '%s: connection error' % (self.ip)return res# disconnect this thingatexit.register(Disconnect, si)content = si.RetrieveContent()esxi_obj = self.get_obj(content, [vim.HostSystem])for esxi in esxi_obj:esxi_host[esxi.name] = {}esxi_host[esxi.name]['idc_id'] = self.idc_idesxi_host[esxi.name]['vcenter_id'] = self.vcenter_idesxi_host[esxi.name]['server_ip'] = esxi.nameesxi_host[esxi.name]['manufacturer'] = esxi.summary.hardware.vendoresxi_host[esxi.name]['server_model'] = esxi.summary.hardware.modelfor i in esxi.summary.hardware.otherIdentifyingInfo:if isinstance(i, vim.host.SystemIdentificationInfo):esxi_host[esxi.name]['server_sn'] = i.identifierValue# 系统名称esxi_host[esxi.name]['system_name'] = esxi.summary.config.product.fullName# cpu总核数esxi_cpu_total = esxi.summary.hardware.numCpuThreads# 内存总量 GBesxi_memory_total = esxi.summary.hardware.memorySize / 1024 / 1024 / 1024# 获取硬盘总量 GBesxi_disk_total = 0for ds in esxi.datastore:esxi_disk_total += ds.summary.capacity / 1024 / 1024 / 1024# 默认配置4核8G100G，根据这个配置计算剩余可分配虚拟机default_configure = {'cpu': 4,'memory': 8,'disk': 100}esxi_host[esxi.name]['vm_host'] = []vm_usage_total_cpu = 0vm_usage_total_memory = 0vm_usage_total_disk = 0# 虚拟机信息for vm in esxi.vm:host_info = {}host_info['vm_name'] = vm.namehost_info['power_status'] = vm.runtime.powerStatehost_info['cpu_total_kernel'] = str(vm.config.hardware.numCPU) + '核'host_info['memory_total'] = str(vm.config.hardware.memoryMB) + 'MB'host_info['system_info'] = vm.config.guestFullNamedisk_info = ''disk_total = 0for d in vm.config.hardware.device:if isinstance(d, vim.vm.device.VirtualDisk):disk_total += d.capacityInKB / 1024 / 1024disk_info += d.deviceInfo.label + ": " +  str((d.capacityInKB) / 1024 / 1024) + ' GB' + ','host_info['disk_info'] = disk_infoesxi_host[esxi.name]['vm_host'].append(host_info)# 计算当前宿主机可用容量：总量 - 已分配的if host_info['power_status'] == 'poweredOn':vm_usage_total_cpu += vm.config.hardware.numCPUvm_usage_total_disk += disk_totalvm_usage_total_memory += (vm.config.hardware.memoryMB / 1024)esxi_cpu_free = esxi_cpu_total - vm_usage_total_cpuesxi_memory_free = esxi_memory_total - vm_usage_total_memoryesxi_disk_free = esxi_disk_total - vm_usage_total_diskesxi_host[esxi.name]['cpu_info'] = 'Total: %d核, Free: %d核' % (esxi_cpu_total, esxi_cpu_free)esxi_host[esxi.name]['memory_info'] = 'Total: %dGB, Free: %dGB' % (esxi_memory_total, esxi_memory_free)esxi_host[esxi.name]['disk_info'] = 'Total: %dGB, Free: %dGB' % (esxi_disk_total, esxi_disk_free)# 计算cpu 内存 磁盘按照默认资源分配的最小值，即为当前可分配资源if esxi_cpu_free < 4 or esxi_memory_free < 8 or esxi_disk_free < 100:free_allocation_vm_host = 0else:free_allocation_vm_host = int(min([esxi_cpu_free / default_configure['cpu'],esxi_memory_free / default_configure['memory'],esxi_disk_free / default_configure['disk']]))esxi_host[esxi.name]['free_allocation_vm_host'] = free_allocation_vm_hostesxi_host['connect_status'] = Truereturn esxi_hostdef write_to_db(self):esxi_host = self.get_esxi_info()# 连接失败if not esxi_host['connect_status']:return esxi_hostdel esxi_host['connect_status']for machine_ip in esxi_host:# 物理机信息esxi_host_dict = esxi_host[machine_ip]# 虚拟机信息virtual_host = esxi_host[machine_ip]['vm_host']del esxi_host[machine_ip]['vm_host']obj = models.EsxiHost.objects.create(**esxi_host_dict)obj.save()for host_info in virtual_host:host_info['management_host_id'] = obj.idobj2 = models.virtualHost.objects.create(**host_info)obj2.save()

获取域名 ssl 证书过期时间

用于 zabbix 告警

import re
import sys
import time
import subprocess
from datetime import datetime
from io import StringIOdef main(domain):f = StringIO()comm = f"curl -Ivs https://{domain} --connect-timeout 10"result = subprocess.getstatusoutput(comm)f.write(result[1])try:m = re.search('start date: (.*?)\n.*?expire date: (.*?)\n.*?common name: (.*?)\n.*?issuer: CN=(.*?)\n', f.getvalue(), re.S)start_date = m.group(1)expire_date = m.group(2)common_name = m.group(3)issuer = m.group(4)except Exception as e:return 999999999# time 字符串转时间数组start_date = time.strptime(start_date, "%b %d %H:%M:%S %Y GMT")start_date_st = time.strftime("%Y-%m-%d %H:%M:%S", start_date)# datetime 字符串转时间数组expire_date = datetime.strptime(expire_date, "%b %d %H:%M:%S %Y GMT")expire_date_st = datetime.strftime(expire_date,"%Y-%m-%d %H:%M:%S")# 剩余天数remaining = (expire_date-datetime.now()).daysreturn remaining if __name__ == "__main__":domain = sys.argv[1] remaining_days = main(domain)print(remaining_days)

发送今天的天气预报以及未来的天气趋势图

此脚本用于给老婆大人发送今天的天气预报以及未来的天气趋势图，现在微信把网页端禁止了，没法发送到微信了，我是通过企业微信进行通知的，需要把你老婆大人拉到企业微信，无兴趣的小伙伴跳过即可。

    # -*- coding: utf-8 -*-import requestsimport jsonimport datetimedef weather(city):url = "http://wthrcdn.etouch.cn/weather_mini?city=%s" % citytry:data = requests.get(url).json()['data']city = data['city']ganmao = data['ganmao']today_weather = data['forecast'][0]res = "老婆今天是{}\n今天天气概况\n城市: {:<10}\n时间: {:<10}\n高温: {:<10}\n低温: {:<10}\n风力: {:<10}\n风向: {:<10}\n天气: {:<10}\n\n稍后会发送近期温度趋势图，请注意查看。\".format(ganmao,city,datetime.datetime.now().strftime('%Y-%m-%d'),today_weather['high'].split()[1],today_weather['low'].split()[1],today_weather['fengli'].split('[')[2].split(']')[0],today_weather['fengxiang'],today_weather['type'],)return {"source_data": data, "res": res}except Exception as e:return str(e)```+ 获取天气预报趋势图```python# -*- coding: utf-8 -*-import matplotlib.pyplot as pltimport reimport datetimedef Future_weather_states(forecast, save_path, day_num=5):'''展示未来的天气预报趋势图:param forecast: 天气预报预测的数据:param day_num: 未来几天:return: 趋势图'''future_forecast = forecastdict={}for i in range(day_num):data = []date = future_forecast[i]["date"]date = int(re.findall("\d+",date)[0])data.append(int(re.findall("\d+", future_forecast[i]["high"])[0]))data.append(int(re.findall("\d+", future_forecast[i]["low"])[0]))data.append(future_forecast[i]["type"])dict[date] = datadata_list = sorted(dict.items())date=[]high_temperature = []low_temperature = []for each in data_list:date.append(each[0])high_temperature.append(each[1][0])low_temperature.append(each[1][1])fig = plt.plot(date,high_temperature,"r",date,low_temperature,"b")current_date = datetime.datetime.now().strftime('%Y-%m')plt.rcParams['font.sans-serif'] = ['SimHei']plt.rcParams['axes.unicode_minus'] = Falseplt.xlabel(current_date)plt.ylabel("℃")plt.legend(["高温", "低温"])plt.xticks(date)plt.title("最近几天温度变化趋势")plt.savefig(save_path)```+ 发送到企业微信```python# -*- coding: utf-8 -*-import requestsimport jsonclass DLF:def __init__(self, corpid, corpsecret):self.url = "https://qyapi.weixin.qq.com/cgi-bin"self.corpid = corpidself.corpsecret = corpsecretself._token = self._get_token()def _get_token(self):'''获取企业微信API接口的access_token:return:'''token_url = self.url + "/gettoken?corpid=%s&corpsecret=%s" %(self.corpid, self.corpsecret)try:res = requests.get(token_url).json()token = res['access_token']return tokenexcept Exception as e:return str(e)def _get_media_id(self, file_obj):get_media_url = self.url + "/media/upload?access_token={}&type=file".format(self._token)data = {"media": file_obj}try:res = requests.post(url=get_media_url, files=data)media_id = res.json()['media_id']return media_idexcept Exception as e:return str(e)def send_text(self, agentid, content, touser=None, toparty=None):send_msg_url = self.url + "/message/send?access_token=%s" % (self._token)send_data = {"touser": touser,"toparty": toparty,"msgtype": "text","agentid": agentid,"text": {"content": content}}try:res = requests.post(send_msg_url, data=json.dumps(send_data))except Exception as e:return str(e)def send_image(self, agentid, file_obj, touser=None, toparty=None):media_id = self._get_media_id(file_obj)send_msg_url = self.url + "/message/send?access_token=%s" % (self._token)send_data = {"touser": touser,"toparty": toparty,"msgtype": "image","agentid": agentid,"image": {"media_id": media_id}}try:res = requests.post(send_msg_url, data=json.dumps(send_data))except Exception as e:return str(e)
+ main脚本# -*- coding: utf-8 -*-from plugins.weather_forecast import weather
from plugins.trend_chart import Future_weather_states
from plugins.send_wechat import DLF
import os# 企业微信相关信息
corpid = "xxx"
corpsecret = "xxx"
agentid = "xxx"
# 天气预报趋势图保存路径
_path = os.path.dirname(os.path.abspath(__file__))
save_path = os.path.join(_path ,'./tmp/weather_forecast.jpg')# 获取天气预报信息
content = weather("大兴")# 发送文字消息
dlf = DLF(corpid, corpsecret)
dlf.send_text(agentid=agentid, content=content['res'], toparty='1')# 生成天气预报趋势图
Future_weather_states(content['source_data']['forecast'], save_path)
# 发送图片消息
file_obj = open(save_path, 'rb')
dlf.send_image(agentid=agentid, toparty='1', file_obj=file_obj)

Shell 脚本部分

SVN 完整备份

通过 hotcopy 进行 SVN 完整备份，备份保留 7 天。

#!/bin/bash
# Filename   :  svn_backup_repos.sh
# Date       :  2020/12/14
# Author     :  JakeTian
# Email      :  JakeTian@***.com
# Crontab    :  59 23 * * * /bin/bash $BASE_PATH/svn_backup_repos.sh >/dev/null 2>&1
# Notes      :  将脚本加入crontab中，每天定时执行
# Description:  SVN完全备份set -eSRC_PATH="/opt/svndata"
DST_PATH="/data/svnbackup"
LOG_FILE="$DST_PATH/logs/svn_backup.log"
SVN_BACKUP_C="/bin/svnadmin hotcopy"
SVN_LOOK_C="/bin/svnlook youngest"
TODAY=$(date +'%F')
cd $SRC_PATH
ALL_REPOS=$(find ./ -maxdepth 1 -type d ! -name 'httpd' -a ! -name 'bak' | tr -d './')# 创建备份目录，备份脚本日志目录
test -d $DST_PATH || mkdir -p $DST_PATH
test -d $DST_PATH/logs || mkdir $DST_PATH/logs
test -d $DST_PATH/$TODAY || mkdir $DST_PATH/$TODAY# 备份repos文件
for repo in $ALL_REPOS
do$SVN_BACKUP_C $SRC_PATH/$repo $DST_PATH/$TODAY/$repo# 判断备份是否完成if $SVN_LOOK_C $DST_PATH/$TODAY/$repo;thenecho "$TODAY: $repo Backup Success" >> $LOG_FILE elseecho "$TODAY: $repo Backup Fail" >> $LOG_FILEfi
done# # 备份用户密码文件和权限文件
cp -p authz access.conf $DST_PATH/$TODAY# 日志文件转储
mv $LOG_FILE $LOG_FILE-$TODAY# 删除七天前的备份
seven_days_ago=$(date -d "7 days ago" +'%F')
rm -rf $DST_PATH/$seven_days_ago

zabbix 监控用户密码过期

用于 Zabbix 监控 Linux 系统用户（shell 为 /bin/bash 和 /bin/sh）密码过期，密码有效期剩余 7 天触发加自动发现用户。

#!/bin/bashdiskarray=(`awk -F':' '$NF ~ /\/bin\/bash/||/\/bin\/sh/{print $1}' /etc/passwd`)
length=${#diskarray[@]}printf "{\n"
printf  '\t'"\"data\":["
for ((i=0;i<$length;i++))
doprintf '\n\t\t{'printf "\"{#USER_NAME}\":\"${diskarray[$i]}\"}"if [ $i -lt $[$length-1] ];thenprintf ','fi
done
printf  "\n\t]\n"
printf "}\n"检查用户密码过期#!/bin/bashexport LANG=en_US.UTF-8SEVEN_DAYS_AGO=$(date -d '-7 day' +'%s')
user="$1"# 将Sep 09, 2018格式的时间转换成unix时间
expires_date=$(sudo chage -l $user | awk -F':' '/Password expires/{print $NF}' | sed -n 's/^ //p')
if [[ "$expires_date" != "never" ]];thenexpires_date=$(date -d "$expires_date" +'%s')if [ "$expires_date" -le "$SEVEN_DAYS_AGO" ];thenecho "1"elseecho "0"fi
elseecho "0"
fi

构建本地YUM

通过 rsync 的方式同步 yum，通过 nginx 只做 http yum 站点；

但是 centos6 的镜像最近都不能用了，国内貌似都禁用了，如果找到合适的自行更换地址。

#!/bin/bash
# 更新yum镜像RsyncCommand="rsync -rvutH -P --delete --delete-after --delay-updates --bwlimit=1000"
DIR="/app/yumData"
LogDir="$DIR/logs"
Centos6Base="$DIR/Centos6/x86_64/Base"
Centos7Base="$DIR/Centos7/x86_64/Base"
Centos6Epel="$DIR/Centos6/x86_64/Epel"
Centos7Epel="$DIR/Centos7/x86_64/Epel"
Centos6Salt="$DIR/Centos6/x86_64/Salt"
Centos7Salt="$DIR/Centos7/x86_64/Salt"
Centos6Update="$DIR/Centos6/x86_64/Update"
Centos7Update="$DIR/Centos7/x86_64/Update"
Centos6Docker="$DIR/Centos6/x86_64/Docker"
Centos7Docker="$DIR/Centos7/x86_64/Docker"
Centos6Mysql5_7="$DIR/Centos6/x86_64/Mysql/Mysql5.7"
Centos7Mysql5_7="$DIR/Centos7/x86_64/Mysql/Mysql5.7"
Centos6Mysql8_0="$DIR/Centos6/x86_64/Mysql/Mysql8.0"
Centos7Mysql8_0="$DIR/Centos7/x86_64/Mysql/Mysql8.0"
MirrorDomain="rsync://rsync.mirrors.ustc.edu.cn"# 目录不存在就创建
check_dir(){for dir in $*dotest -d $dir || mkdir -p $dirdone
}# 检查rsync同步结果
check_rsync_status(){if [ $? -eq 0 ];thenecho "rsync success" >> $1elseecho "rsync fail" >> $1fi
}check_dir $DIR $LogDir $Centos6Base $Centos7Base $Centos6Epel $Centos7Epel $Centos6Salt $Centos7Salt $Centos6Update $Centos7Update $Centos6Docker $Centos7Docker $Centos6Mysql5_7 $Centos7Mysql5_7 $Centos6Mysql8_0 $Centos7Mysql8_0# Base yumrepo
#$RsyncCommand "$MirrorDomain"/repo/centos/6/os/x86_64/ $Centos6Base >> "$LogDir/centos6Base.log" 2>&1
# check_rsync_status "$LogDir/centos6Base.log"
$RsyncCommand "$MirrorDomain"/repo/centos/7/os/x86_64/ $Centos7Base >> "$LogDir/centos7Base.log" 2>&1
check_rsync_status "$LogDir/centos7Base.log"# Epel yumrepo
# $RsyncCommand "$MirrorDomain"/repo/epel/6/x86_64/ $Centos6Epel >> "$LogDir/centos6Epel.log" 2>&1
# check_rsync_status "$LogDir/centos6Epel.log"
$RsyncCommand "$MirrorDomain"/repo/epel/7/x86_64/ $Centos7Epel >> "$LogDir/centos7Epel.log" 2>&1
check_rsync_status "$LogDir/centos7Epel.log"# SaltStack yumrepo
# $RsyncCommand "$MirrorDomain"/repo/salt/yum/redhat/6/x86_64/ $Centos6Salt >> "$LogDir/centos6Salt.log" 2>&1
# ln -s $Centos6Salt/archive/$(ls $Centos6Salt/archive | tail -1) $Centos6Salt/latest
# check_rsync_status "$LogDir/centos6Salt.log"
$RsyncComman "$MirrorDomain"/repo/salt/yum/redhat/7/x86_64/ $Centos7Salt >> "$LogDir/centos7Salt.log" 2>&1
check_rsync_status "$LogDir/centos7Salt.log"
# ln -s $Centos7Salt/archive/$(ls $Centos7Salt/archive | tail -1) $Centos7Salt/latest# Docker yumrepo
$RsyncCommand "$MirrorDomain"/repo/docker-ce/linux/centos/7/x86_64/stable/ $Centos7Docker >> "$LogDir/centos7Docker.log" 2>&1
check_rsync_status "$LogDir/centos7Docker.log"# centos update yumrepo
# $RsyncCommand "$MirrorDomain"/repo/centos/6/updates/x86_64/ $Centos6Update >> "$LogDir/centos6Update.log" 2>&1
# check_rsync_status "$LogDir/centos6Update.log"
$RsyncCommand "$MirrorDomain"/repo/centos/7/updates/x86_64/ $Centos7Update >> "$LogDir/centos7Update.log" 2>&1
check_rsync_status "$LogDir/centos7Update.log"# mysql 5.7 yumrepo
# $RsyncCommand "$MirrorDomain"/repo/mysql-repo/yum/mysql-5.7-community/el/6/x86_64/ "$Centos6Mysql5_7" >> "$LogDir/centos6Mysql5.7.log" 2>&1
# check_rsync_status "$LogDir/centos6Mysql5.7.log"
$RsyncCommand "$MirrorDomain"/repo/mysql-repo/yum/mysql-5.7-community/el/7/x86_64/ "$Centos7Mysql5_7" >> "$LogDir/centos7Mysql5.7.log" 2>&1
check_rsync_status "$LogDir/centos7Mysql5.7.log"# mysql 8.0 yumrepo
# $RsyncCommand "$MirrorDomain"/repo/mysql-repo/yum/mysql-8.0-community/el/6/x86_64/ "$Centos6Mysql8_0" >> "$LogDir/centos6Mysql8.0.log" 2>&1
# check_rsync_status "$LogDir/centos6Mysql8.0.log"
$RsyncCommand "$MirrorDomain"/repo/mysql-repo/yum/mysql-8.0-community/el/7/x86_64/ "$Centos7Mysql8_0" >> "$LogDir/centos7Mysql8.0.log" 2>&1
check_rsync_status "$LogDir/centos7Mysql8.0.log"

读者需求解答

负载高时，查出占用比较高的进程脚本并存储或推送通知

这部分内容是上篇 Shell 脚本实例中底部读者留言的需求，如下：

#!/bin/bash# 物理cpu个数
physical_cpu_count=$(egrep 'physical id' /proc/cpuinfo | sort | uniq | wc -l)
# 单个物理cpu核数
physical_cpu_cores=$(egrep 'cpu cores' /proc/cpuinfo | uniq | awk '{print $NF}')
# 总核数
total_cpu_cores=$((physical_cpu_count*physical_cpu_cores))# 分别是一分钟、五分钟、十五分钟负载的阈值，其中有一项超过阈值才会触发
one_min_load_threshold="$total_cpu_cores"
five_min_load_threshold=$(awk 'BEGIN {print '"$total_cpu_cores"' * "0.8"}')
fifteen_min_load_threshold=$(awk 'BEGIN {print '"$total_cpu_cores"' * "0.7"}')# 分别是分钟、五分钟、十五分钟负载平均值
one_min_load=$(uptime | awk '{print $(NF-2)}' | tr -d ',')
five_min_load=$(uptime | awk '{print $(NF-1)}' | tr -d ',')
fifteen_min_load=$(uptime | awk '{print $NF}' | tr -d ',')# 获取当前cpu 内存 磁盘io信息，并写入日志文件
# 如果需要发送消息或者调用其他，请自行编写函数即可
get_info(){log_dir="cpu_high_script_log"test -d "$log_dir" || mkdir "$log_dir"ps -eo user,pid,%cpu,stat,time,command --sort -%cpu | head -10 > "$log_dir"/cpu_top10.logps -eo user,pid,%mem,rss,vsz,stat,time,command --sort -%mem | head -10 > "$log_dir"/mem_top10.logiostat -dx 1 10 > "$log_dir"/disk_io_10.log
}export -f get_infoecho "$one_min_load $one_min_load_threshold $five_min_load $five_min_load_threshold $fifteen_min_load $fifteen_min_load_threshold" | \
awk '{ if ($1>=$2 || $3>=$4 || $5>=$6) system("get_info") }'

以上，就是今天分享的全部内容了。

希望大家通过这些案例能够学以致用，结合自身的实际场景进行运用，从而提高自己的工作效率。

如果你有更多脚本实例，也欢迎大家分享或通过本文留言区进行留言说说你具体的脚本实例需求，如果实例过多的话，下次杰哥在整一篇合集脚本文章实例来跟大家分享。

脚本实例文件：

链接：https://pan.baidu.com/s/1TxSnQUtk3soKhbivWeYLIg 提取码：y8pn