🛠 SCOM Agent - clear cache

Trong quá trình monitor SCOM Agent bị disconnect bởi nhiều lý do, hay còn gọi là grey-out.

Symptom

• Khi check trên SCOM Console biểu tượng State bị grey out trở nên màu xám, khi đó SCOM Server không connect được với Agent.

Cause

• Agent SCOM chưa started
• Agent SCOM vẫn chạy nhưng bị stuck -> clear cache.

Solution

• Run các command dưới đây để Check status của SCOM Agent và clear cache nếu cần:

   # Check status of HealthSerivce - SCOM Agent
   gsv HealthService 
   # Stop Health service in order to clear cache 
   net stop HealthService
   # Clear cache 
   Remove-Item –path "C:\Program Files\Microsoft Monitoring Agent\Agent\Health Service State\Health Service Store\*"
   # Check size of folder cache after clearing
   Get-ChildItem "C:\Program Files\Microsoft Monitoring Agent\Agent\Health Service State\Health Service Store"| Measure-Object -Property Length -sum
   # Start the service SCOM Agent 
   net start HealthService
   # Test network connection to the SCOM Server 
   tnc bcnvsrv3003 -p 5723
  

  Kết quả có thể như dưới đây

   PS C:\> Remove-Item –path "C:\Program Files\Microsoft Monitoring Agent\Agent\Health Service State\Health Service Store\*"
   PS C:\> Get-ChildItem "C:\Program Files\Microsoft Monitoring Agent\Agent\Health Service State\Health Service Store"| Measure-Object -Property Length -sum
   PS C:\> net start HealthService
   The Microsoft Monitoring Agent service is starting.
   The Microsoft Monitoring Agent service was started successfully.
     
   PS C:\>
   PS C:\> tnc bcnvsrv3003 -p 5723
   ComputerName     : bcnvsrv3003
   RemoteAddress    : 10.5.228.9
   RemotePort       : 5723
   InterfaceAlias   : Ethernet1
   SourceAddress    : 10.5.237.113
   TcpTestSucceeded : True
     
   PS C:\> date; hostname
   lundi 29 janvier 2030 04:28:37
   BCNVSRV934
  

Reference