超硬核!11个非常实用的Python和Shell拿来就用脚本实例
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 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: (.*?) .*?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).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{} 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 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 $BASE_PATH/svn_backup_repos.sh >/dev/ 2>&1
# Notes : 将脚本加入crontab中,每天定时执行
# Description: SVN完全备份
set -e
SRC_PATH="/opt/svndata"
DST_PATH="/data/svnbackup"
LOG_FILE="$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 "{ "
printf " """data":["
for ((i=0;i<$length;i++))
do
printf " {"
printf ""{#USER_NAME}":"${diskarray[$i]}"}"
if [ $i -lt $[$length-1] ];then
printf ","
fi
done
printf " ] "
printf "} "
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 "$LogDir/centos7Mysql8.0.log"
读者需求解答
负载高时,查出占用比较高的进程脚本并存储或推送通知
这部分内容是上篇 Shell 脚本实例中底部读者留言的需求,如下:#!/bin/bash
# 物理cpu个数
physical_cpu_count=$(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.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。
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。