11 very practical Python and Shell script examples!

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）；

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 json


class DLF:
def __init__(self, corpid, corpsecret):
self.url = "https://qyapi.weixin.qq.com/cgi-bin"
self.corpid = corpid
self.corpsecret = corpsecret
self._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 token
except 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_id
except 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 copy


class FTPClient:
def __init__(self, host, user, passwd, port=21):
self.host = host
self.user = user
self.passwd = passwd
self.port = port
self.res = {'status': True, 'msg': None}
self._ftp = None
self._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 e

def 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_list

def 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_d
except Exception as e:
res['status'] = False
res['msg'] = str(e)

return res

def 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_d
except Exception as e:
res['status'] = False
res['msg'] = str(e)

return res

def 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_f
except Exception as e:
res['status'] = False
res['msg'] = str(e)

return res

def 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'] = file
res_d['size'] = size
res_d['type'] = type
res_l.append(res_d)

return res_l

def 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_f
except Exception as e:
res['status'] = False
res['msg'] = str(e)

return res

def 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 paramiko

class SSHClient:
def __init__(self, host, port, user, pkey):
self.ssh_host = host
self.ssh_port = port
self.ssh_user = user
self.private_key = paramiko.RSAKey.from_private_key_file(pkey)
self.ssh = None
self._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, err

def 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 copy


class 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.token

def 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'] = tgt
else:
data['tgt'] = '*'
data['fun'] = 'grains.item'
data['arg'] = arg
result = self.get_data(self.url, data)

return result


def 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'] = arg
if tgt != '*':
data['tgt_type'] = tgt_type
if salt_async: data['client'] = 'local_async'
data['fun'] = fun
data['tgt'] = tgt
result = self.get_data(self.url, data)

return result


def 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'] = fun
if fun == 'detail':
if not jid: return {'success': False, 'msg': 'job id is none'}
data['fun'] = 'jobs.lookup_jid'
data['jid'] = jid
else:
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, SmartConnectNoSSL
from pyVmomi import vim
from asset import models
import atexit


class Vmware:
def __init__(self, ip, user, password, port, idc, vcenter_id):
self.ip = ip
self.user = user
self.password = password
self.port = port
self.idc_id = idc
self.vcenter_id = vcenter_id

def 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 obj

def get_esxi_info(self):
# 宿主机信息
esxi_host = {}
res = {"connect_status": True, "msg": None}

try:
# connect this thing
si = SmartConnectNoSSL(host=self.ip, user=self.user, pwd=self.password, port=self.port, connectionPoolTimeout=60)
except Exception as e:
res['connect_status'] = False
try:
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 thing
atexit.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_id
esxi_host[esxi.name]['vcenter_id'] = self.vcenter_id
esxi_host[esxi.name]['server_ip'] = esxi.name
esxi_host[esxi.name]['manufacturer'] = esxi.summary.hardware.vendor
esxi_host[esxi.name]['server_model'] = esxi.summary.hardware.model

for 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 GB
esxi_memory_total = esxi.summary.hardware.memorySize / 1024 / 1024 / 1024

# 获取硬盘总量 GB
esxi_disk_total = 0
for 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 = 0
vm_usage_total_memory = 0
vm_usage_total_disk = 0

# 虚拟机信息
for vm in esxi.vm:
host_info = {}
host_info['vm_name'] = vm.name
host_info['power_status'] = vm.runtime.powerState
host_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.guestFullName

disk_info = ''
disk_total = 0
for d in vm.config.hardware.device:
if isinstance(d, vim.vm.device.VirtualDisk):
disk_total += d.capacityInKB / 1024 / 1024
disk_info += d.deviceInfo.label + ": " +str((d.capacityInKB) / 1024 / 1024) + ' GB' + ','

host_info['disk_info'] = disk_info
esxi_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.numCPU
vm_usage_total_disk += disk_total
vm_usage_total_memory += (vm.config.hardware.memoryMB / 1024)

esxi_cpu_free = esxi_cpu_total - vm_usage_total_cpu
esxi_memory_free = esxi_memory_total - vm_usage_total_memory
esxi_disk_free = esxi_disk_total - vm_usage_total_disk

esxi_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 = 0
else:
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_host
esxi_host['connect_status'] = True
return esxi_host

def write_to_db(self):
esxi_host = self.get_esxi_info()
# 连接失败
if not esxi_host['connect_status']:
return esxi_host

del 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.id
obj2 = 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 StringIO

def 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()).days

return 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 requests
import json
import datetime

def weather(city):
url = "http://wthrcdn.etouch.cn/weather_mini?city=%s" % city

try:
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}nn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 plt
import re
import datetime


def 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 = forecast
dict={}

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] = data

data_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'] = False
plt.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 requests
import json


class DLF:
def __init__(self, corpid, corpsecret):
self.url = "https://qyapi.weixin.qq.com/cgi-bin"
self.corpid = corpid
self.corpsecret = corpsecret
self._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 token
except 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_id
except 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11 very practical Python and Shell script examples!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 -e

SRC_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/$repo;then
echo "$TODAY: $repo Backup Success" >> $LOG_FILE 
else
echo "$TODAY: $repo Backup Fail" >> $LOG_FILE
fi
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/bash

diskarray=(`awk -F':' '$NF ~ //bin/bash/||//bin/sh/{print $1}' /etc/passwd`)
length=${#diskarray[@]}

printf "{n"
printf't'""data":["
for ((i=0;i<$length;i++))
do
printf 'ntt{'
printf ""{#USER_NAME}":"${diskarray[$i]}"}"
if [ $i -lt $[$length-1] ];then
printf ','
fi
done
printf"nt]n"
printf "}n"

检查用户密码过期

#!/bin/bash
export LANG=en_US.UTF-8

SEVEN_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" ]];then
expires_date=$(date -d "$expires_date" +'%s')

if [ "$expires_date" -le "$SEVEN_DAYS_AGO" ];then
echo "1"
else
echo "0"
fi
else
echo "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 $*
do
test -d $dir || mkdir -p $dir
done
}

# 检查rsync同步结果
check_rsync_status(){
if [ $? -eq 0 ];then
echo "rsync success" >> $1
else
echo "rsync fail" >> $1
fi
}


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

#!/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 > "$log_dir"/cpu_top10.log
ps -eo user,pid,%mem,rss,vsz,stat,time,command --sort -%mem | head -10 > "$log_dir"/mem_top10.log
iostat -dx 1 10 > "$log_dir"/disk_io_10.log
}


export -f get_info

echo "$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。

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