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 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_tokendef _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).jsontoken = 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 FTPfrom os import pathimport 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._logindef _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 = FTPself._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.closedef 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.closedef 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.quitexcept 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._connectdef _connect(self):self.ssh = paramiko.SSHClientself.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.readerr = stderr.readreturn 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 requestsimport jsonimport 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.jsonresult = 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

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, SmartConnectNoSSLfrom pyVmomi import vimfrom asset import modelsimport 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.RetrieveContentesxi_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.savefor 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 reimport sysimport timeimport subprocessfrom datetime import datetimefrom io import StringIOdef main(domain):f = StringIOcomm = f”curl -Ivs https://{domain} –connect-timeout 10″result = subprocess.getstatusoutput(comm)f.write(result[1])try:m = re.search(‘start date: (.*?).*?expire date: (.*?).*?common name: (.*?).*?issuer: CN=(.*?)’, 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 remainingif __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{}今天天气概况城市: {:<10}时间: {:<10}高温: {:<10}低温: {:<10}风力: {:<10}风向: {:<10}天气: {:<10}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_tokendef _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).jsontoken = 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 weatherfrom plugins.trend_chart import Future_weather_statesfrom plugins.send_wechat import DLFimport 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 $BASE_PATH/svn_backup_repos.sh >/dev/ 2>&1# Notes : 将脚本加入crontab中，每天定时执行# Description: SVN完全备份set -eSRC_PATH=”/opt/svndata”DST_PATH=”/data/svnbackup”LOG_FILE=”$DST_PATH/logs/svn_backup.log”SVN_BACKUP_C=”/bin/svnadmin hotcopy”SVN_LOOK_C=”/bin/svnlook youngest”TODAY=$(date +’%F’)cd $SRC_PATHALL_REPOS=$(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_PATHtest -d $DST_PATH/logs || mkdir $DST_PATH/logstest -d $DST_PATH/$TODAY || mkdir $DST_PATH/$TODAY# 备份repos文件for repo in $ALL_REPOSdo$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” >> $LOG_FILEelseecho “$TODAY: $repo Backup Fail” >> $LOG_FILEfidone# # 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 “{“printf ”””data”:[“for ((i=0;i<$length;i++))doprintf '{'printf ""{#USER_NAME}":"${diskarray[$i]}"}"if [ $i -lt $[$length-1] ];thenprintf ','fidoneprintf "]"printf "}"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"fielseecho "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>&1check_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>&1check_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>&1check_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>&1check_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>&1check_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” >> “$LogDir/centos7Mysql5.7.log” 2>&1check_rsync_status “$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” >> “$LogDir/centos7Mysql8.0.log” 2>&1check_rsync_status “$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。