如何利用PowerShell监控Win-Server性能详解

PS E:\> echo "Hello China"
Hello China
PS E:\> echo "Hello China">hello.psl
PS E:\> cat .\hello.psl
Hello China
PS E:\> @'
>> dir
>> help dir
>> ls
>> '@>test.psl

PS E:\> Get-ExecutionPolicy
Restricted
PS E:\> Set-ExecutionPolicy Unrestricted

执行策略更改
执行策略可帮助你防止执行不信任的脚本。更改执行策略可能会产生安全风险，如 https:/go.microsoft.com/fwlink/?LinkID=135170
中的 about_Execution_Policies 帮助主题所述。是否要更改执行策略?
[Y] 是(Y) [A] 全是(A) [N] 否(N) [L] 全否(L) [S] 暂停(S) [?] 帮助 (默认值为“N”): y

PS D:\> $mem = gwmi win32_OperatingSystem
PS D:\> $mem
SystemDirectory : C:\Windows\system32
Organization :
BuildNumber : 15063
RegisteredUser : Windows 用户
SerialNumber : 00331-10000-00001-AA275
Version : 10.0.15063

PS D:\> $Allmem = "{0:0.0} MB" -f ($mem.TotalVisibleMemorySize / 1KB)
PS D:\> $Allmem
4003.4 MB

PS D:\> $Freemem = "{0:0.0} MB" -f ($mem.FreePhysicalMemory / 1KB)
PS D:\> $Freemem
285.5 MB

PS D:\> $Permem = "{0:0.0} %" -f ((($mem.TotalVisibleMemorySize-$mem.FreePhysicalMemory)/$mem.TotalVisibleMemorySize)*100)
PS D:\> $Permem
92.9 %

PS D:\> gwmi Win32_LogicalDisk | Foreach-Object { 'Disk {0} has {1:0.0} GB space available' -f $_.Caption, ($_.FreeSpace / 1024MB) }
Disk C: has 53.1 GB space available
Disk D: has 183.5 GB space available
Disk E: has 164.1 GB space available

PS D:\> cat .\GetCPUMem.ps1
$Server = $env:computername
#server's CPU Mem Hardinfor
 $cpu = Get-WMIObject –computername $Server win32_Processor
 $mem = gwmi -ComputerName $Server win32_OperatingSystem
 $Disks = gwmi –Computer: $Server win32_logicaldisk -filter "drivetype=3"
 $Havecpu = "{0:0.0} %" -f $cpu.LoadPercentage
 $Allmem = "{0:0.0} MB" -f ($mem.TotalVisibleMemorySize / 1KB)
 $Freemem = "{0:0.0} MB" -f ($mem.FreePhysicalMemory / 1KB)
 $Permem = "{0:0.0} %" -f ((($mem.TotalVisibleMemorySize-$mem.FreePhysicalMemory)/$mem.TotalVisibleMemorySize)*100)
 Write-Host "COMPUTER:$Server"`r`n
# `r`n表示换行输出
 Write-Host "CPU:$Havecpu"`r`n
 Write-Host "Total Mem:$Allmem"
 Write-Host "Free Mem:$Freemem"
 Write-Host "Used Mem:$Permem"`r`n
 $IpAdd = (Get-WmiObject -class win32_NetworkAdapterConfiguration -Filter 'ipenabled = "true"').ipaddress[0]
 Write-Host "Ipaddress:$IpAdd"`r`n

PS D:\> .\GetCPUMem.ps1
COMPUTER:DESKTOP-P8MIUHK

CPU:15.0 %

Total Mem:4003.4 MB
Free Mem:272.9 MB
Used Mem:93.2 %

Ipaddress:192.168.203.111

USE [TestDB]
GO
/*系统性能监控：CPU、内存、disk*/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER proc M_cpumem
--手动获取数据库服务器IP
@ip nvarchar(20)
AS
BEGIN
 /*获取CPU、内存使用情况信息*/
 --作业Get-CPU_Mem，执行powershell脚本
 DECLARE @cm nvarchar(100)
 SET @cm=(
  SELECT log 
  FROM msdb.dbo.sysjobstepslogs)
 --cpu使用率
 DECLARE @cpu int
 SET @cpu=CAST((SELECT SUBSTRING(@cm,5,4)) AS numeric(2,0))
 --内存使用率
 DECLARE @mem int
 SET @mem=CAST((SELECT SUBSTRING(@cm,22,4)) AS numeric(2,0))
 
 /*CPU过载报警监控*/
 --CPU使用率大于80%说明系统出现高耗
 IF (@cpu>80)
 BEGIN
  DECLARE @str_subject_cpu nvarchar(100),@str_html_cpu nvarchar(max);
  SET @str_subject_cpu='服务器：'+@ip+' CPU高耗报警'
  --CPU或调度器当前分配的工作情况
  SET @str_html_cpu='Dear All:
    <br>&nbsp;&nbsp;系统CPU>80%，请参阅系统调度情况，进行性能优化处理！<br>
    <table border=1 >'+
    '<tr>
     <td style="width: 80px"><p align="center" >Scheduler_ID</p></td>
     <td style="width: 80px"><p align="center" >CPU_ID</p></td>
     <td style="width: 150px"><p align="center" >状态</p></td>
     <td style="width: 80px"><p align="center" >Is_Idle</p></td>
     <td style="width: 90px"><p align="center" >当前任务数</p></td>
     <td style="width: 80px"><p align="center" >等待调度线程数</p></td>
     <td style="width: 90px"><p align="center" >当前线程数</p></td>
     <td style="width: 90px"><p align="center" >活动线程数</p></td>
     <td style="width: 90px"><p align="center" >挂起任务数</p></td>
    </tr>'+
   CAST((
    SELECT
     td=scheduler_id,'',
     td=cpu_id,'',
     td=status,'',
     td=is_idle,'',
     td=current_tasks_count,'',
     td=runnable_tasks_count,'',
     td=current_workers_count,'',
     td=active_workers_count,'',
     td=work_queue_count,''
    FROM master.sys.dm_os_schedulers
    WHERE scheduler_id<255
    FOR xml path('tr'),type
    ) AS nvarchar(max))+
    N'</table>';
  BEGIN 
   EXEC msdb.dbo.sp_send_dbmail
   @profile_name='Email',
   @recipients='xxx@xxx.com',
   @subject=@str_subject_cpu,
   @body=@str_html_cpu,
   @body_format='HTML'    
  END
 END
 
 /*内存过载报警监控*/
 --内存使用率大于60%说明系统出现高耗
 IF (@mem>60)
 BEGIN
  DECLARE @str_subject_mem nvarchar(100),@str_html_mem nvarchar(max);
  SET @str_subject_mem='服务器：'+@ip+' 内存高耗报警'
  --系统性能计数器
  SET @str_html_mem='Dear All:
    <br>&nbsp;&nbsp;系统Memory>60%，请参阅系统性能监控情况，进行性能优化处理！<br>
    <table border=1 >'+ 
    '<tr>
     <td style="width: 150px"><p align="center" >Object_Name</p></td>
     <td style="width: 150px"><p align="center" >Counter_Name</p></td>
     <td style="width: 100px"><p align="center" >Value</p></td>    
    </tr>'+
   CAST((
    SELECT 
     td=object_name,'',
     td=counter_name,'',
     td=cntr_value,''
    FROM sys.dm_os_performance_counters
    WHERE object_name in ('SQLServer:Buffer Manager','SQLServer:Memory Manager') 
    AND counter_name in ('Buffer cache hit ratio','Checkpoint pages/sec','Lazy writes/sec','Page lIFe expectancy','Memory Grants PENDing','Target Server Memory (KB)','Total Server Memory (KB)')
    FOR xml path('tr'),type
    ) AS nvarchar(max))+
    N'</table>';
  BEGIN 
   EXEC msdb.dbo.sp_send_dbmail
   @profile_name='Email',
   @recipients='xxx@xxx.com',
   @subject=@str_subject_mem,
   @body=@str_html_mem,
   @body_format='HTML'    
  END
 END

 /*磁盘使用报警监控*/
 --磁盘可使用率小于15%时进行邮件报警
 CREATE TABLE temp_disk_space(Drive_Name nvarchar(50),Total_Space_GB NUMERIC(18,2),Free_Space_GB NUMERIC(18,2))
 INSERT INTO temp_disk_space 
 SELECT DISTINCT 
  vs.volume_mount_point, 
  CAST(vs.total_bytes / 1024.0 / 1024 / 1024 AS NUMERIC(18,2)),
  CAST(vs.available_bytes / 1024.0 / 1024 / 1024 AS NUMERIC(18,2)) 
 FROM sys.master_files AS f 
 CROSS APPLY sys.dm_os_volume_stats(f.database_id,f.file_id) AS vs 
 
 SELECT Drive_Name,(Free_Space_GB * 100)/Total_Space_GB AS [% Free_Space] 
 INTO #temp_space_monitor 
 FROM temp_disk_space 
 ORDER BY Drive_Name 
 
 IF exists(SELECT 1 FROM #temp_space_monitor WHERE [% Free_Space] < 15) 
 BEGIN
  DECLARE @str_subject_disk nvarchar(100);
  SET @str_subject_disk='服务器：'+@ip+' 磁盘空间不足' 
  EXEC msdb.dbo.sp_send_dbmail
  @profile_name='Email',
  @recipients='xxx@xxx.com',
  @subject=@str_subject_disk,
  @body = 'Dear ALL:
  请及时清理磁盘，磁盘空间使用情况见附件！',
  @query = 'SELECT * FROM TestDB.dbo.temp_disk_space', --使用全称
  @attach_query_result_as_file = 1, 
  @query_attachment_filename = 'disk.txt'
 END 
 
 DROP table TestDB.dbo.temp_disk_space, #temp_space_monitor 
    
END