SQL Server自动化运维系列——监控性能指标脚本(Power Shell)

时间:2021-11-18 11:11:20

需求描述

一般在生产环境中,有时候需要自动的检测指标值状态,如果发生异常,需要提前预警的,比如发邮件告知,本篇就介绍如果通过Power shell实现状态值监控

监控值范围

根据经验,作为DBA一般需要监控如下系统能行指标

  cpu:

    \Processor(_Total)\% Processor Time
    \Processor(_Total)\% Privileged Time     \SQLServer:SQL Statistics\Batch Requests/sec
    \SQLServer:SQL Statistics\SQL Compilations/sec
    \SQLServer:SQL Statistics\SQL Re-Compilations/sec
    \System\Processor Queue Length
    \System\Context Switches/sec   Memory:     \Memory\Available Bytes
    \Memory\Pages/sec
    \Memory\Page Faults/sec
    \Memory\Pages Input/sec
    \Memory\Pages Output/sec
    \Process(sqlservr)\Private Bytes
    \SQLServer:Buffer Manager\Buffer cache hit ratio
    \SQLServer:Buffer Manager\Page life expectancy
    \SQLServer:Buffer Manager\Lazy writes/sec
    \SQLServer:Memory Manager\Memory Grants Pending
    \SQLServer:Memory Manager\Target Server Memory (KB)
    \SQLServer:Memory Manager\Total Server Memory (KB)   Disk:     \PhysicalDisk(_Total)\% Disk Time
    \PhysicalDisk(_Total)\Current Disk Queue Length
    \PhysicalDisk(_Total)\Avg. Disk Queue Length
    \PhysicalDisk(_Total)\Disk Transfers/sec
    \PhysicalDisk(_Total)\Disk Bytes/sec
    \PhysicalDisk(_Total)\Avg. Disk sec/Read
    \PhysicalDisk(_Total)\Avg. Disk sec/Write   SQL Server:     \SQLServer:Access Methods\FreeSpace Scans/sec
    \SQLServer:Access Methods\Full Scans/sec
    \SQLServer:Access Methods\Table Lock Escalations/sec
    \SQLServer:Access Methods\Worktables Created/sec
    \SQLServer:General Statistics\Processes blocked
    \SQLServer:General Statistics\User Connections
    \SQLServer:Latches\Total Latch Wait Time (ms)
    \SQLServer:Locks(_Total)\Lock Timeouts (timeout > )/sec
    \SQLServer:Locks(_Total)\Lock Wait Time (ms)
    \SQLServer:Locks(_Total)\Number of Deadlocks/sec
    \SQLServer:SQL Statistics\Batch Requests/sec
    \SQLServer:SQL Statistics\SQL Re-Compilations/sec

上述指标含义,可以参照我上一篇文章:SQL Server需要监控哪些计数器

监控脚本

$server = "(local)"
$uid = "sa"
$db="master"
$pwd="password"
$mailprfname = "SendEmail"
$recipients = "787449667@qq.com"
$subject = "数据库指标异常了!"
$computernamexml = "f:\computername.xml"
$alter_cpuxml = "f:\alter_cpu.xml"
function GetServerName($xmlpath)
{
$xml = [xml] (Get-Content $xmlpath)
$return = New-Object Collections.Generic.List[string]
for($i = ;$i -lt $xml.computernames.ChildNodes.Count;$i++)
{
if ( $xml.computernames.ChildNodes.Count -eq )
{
$cp = [string]$xml.computernames.computername
}
else
{
$cp = [string]$xml.computernames.computername[$i]
}
$return.Add($cp.Trim())
}
$return
} function GetAlterCounter($xmlpath)
{
$xml = [xml] (Get-Content $xmlpath)
$return = New-Object Collections.Generic.List[string]
$list = $xml.counters.Counter
$list
} function CreateAlter($message)
{
$SqlConnection = New-Object System.Data.SqlClient.SqlConnection
$CnnString ="Server = $server; Database = $db;User Id = $uid; Password = $pwd"
$SqlConnection.ConnectionString = $CnnString
$CC = $SqlConnection.CreateCommand();
if (-not ($SqlConnection.State -like "Open")) { $SqlConnection.Open() } $cc.CommandText=" EXEC msdb..sp_send_dbmail
@profile_name = '$mailprfname'
,@recipients = '$recipients'
,@body = '$message'
,@subject = '$subject'
"
$cc.ExecuteNonQuery()|out-null
$SqlConnection.Close();
} $names = GetServerName($computernamexml)
$pfcounters = GetAlterCounter($alter_cpuxml)
foreach($cp in $names)
{
$p = New-Object Collections.Generic.List[string]
$report = ""
foreach ($pfc in $pfcounters)
{
$b = ""
$counter ="\\"+$cp+$pfc.get_InnerText().Trim()
$p.Add($counter) }
$count = Get-Counter $p
for ($i = ; $i -lt $count.CounterSamples.Count; $i++)
{
$v = $count.CounterSamples.Get($i).CookedValue
$pfc = $pfcounters[$i]
#$pfc.get_InnerText()
$b = ""
$lg = ""
if($pfc.operator -eq "lt")
{
if ($v -ge [double]$pfc.alter)
{$b = "alter"
$lg = "Greater Than"}
}
elseif ($pfc.operator -eq "gt")
{
if( $v -le [double]$pfc.alter)
{$b = "alter"
$lg = "Less Than"}
}
if($b -eq "alter")
{
$path = "\\"+$cp+$pfc.get_InnerText() $item = "{0}:{1};{2} Threshold:{3}" -f $path,$v.ToString(),$lg,$pfc.alter.Trim()
$report += $item + "`n"
} }
if($report -ne "")
{
#生产警告 参数 计数器,阀值,当前值
CreateAlter $report
}
}

其中涉及到2个配置文件:computernamexml,alter_cpuxml分别如下:

<computernames>
<computername>
wuxuelei-pc
</computername>
</computernames>
<Counters>
<Counter alter = "" operator = "gt" >\Processor(_Total)\% Processor Time</Counter>
<Counter alter = "" operator = "gt" >\Processor(_Total)\% Privileged Time</Counter>
<Counter alter = "" operator = "gt" >\SQLServer:SQL Statistics\Batch Requests/sec</Counter>
<Counter alter = "" operator = "gt" >\SQLServer:SQL Statistics\SQL Compilations/sec</Counter>
<Counter alter = "" operator = "gt" >\SQLServer:SQL Statistics\SQL Re-Compilations/sec</Counter>
<Counter alter = "" operator= "lt" >\System\Processor Queue Length</Counter>
<Counter alter = "" operator= "lt" >\System\Context Switches/sec</Counter>
</Counters>

其中 alter 就是阀值,如第一条,如果 阀值 > 性能计数器值,就会发出警告。

其实这种自定义配置的方式,实现了灵活多变的自动化监控标准:

1、比如可以检测磁盘空间大小

2、检测运行峰值状态

3、定时的根据历史运行值,更改生产系统中的阀值大小,也就是所谓的运行基线

警告实现方式

1、SQL Agent配置Job方式实现

2、计划任务

以上两种配置方式,可以灵活掌握,操作还是蛮简单的,如果不会,可自行google。当然,如果不想干预正常的生产系统,可以添加一个Server专门用来自动化运维检测来用,实现远程监控。

后续文章中会分析关于Power Shell的远程调用,并且能实现事故当前状态下,自动化截图....自动Send Email......为DBA现场取证第一手材料...方便诊断问题...

效果图如下

SQL Server自动化运维系列——监控性能指标脚本(Power Shell)

以上只提供实现方式,如需要内容更新,自己灵活更新。

脚本下载地址http://files.cnblogs.com/zhijianliutang/DBALter.zip