UCS hardware 문제로 설치 안되는 경우

 

 

이번에 presense를 설치하면서 UCS에서 다음의 오류 메세지가 나왔다

 

이 오류 메세지는 다음과 같다

 

 

 

원인을 모른다..

 

하지만 알아낸 사실은 Cups의 사용자를 작게하면 알맞게 설치가 된다는 것

즉 이말은 hardware의 용량을 작게하면 잘 설치된다는 뜻이다.

 

왜 이런지 tac에 문의결과 UCS 서버의 베터리 사용을 disable 해보란다.

무슨 말인지는 모르겠지만 Esxi를 SCP프로토콜을 이용하여 MegaCli파일을 OPT파일에 Upload 시킨후 다음의 명령을 실행하였다

 

./MegaCli -LDSetProp -CachedBadBBU -Lall -a0

 ./MegaCli -LDSetProp -WB -Lall ?a0

 

그리고나서 다시 설치한 결과 정상 설치 된다.

 

다음은 tac엔지니어가 알려준 방법으로, 메일을 남긴다

===================================================Cisco tac E-mail============================================================

The Developers did have a look at the logs again that we collected and want you to have a look at the at the status of theof hard-disk cache battery backup unit on the C210-M2 itself.

Because we have seen cases were afailed or degraded battery unit can cause the disk cached to go intowrite Throughmode which means the cache is not enabled.

This results in degraded disk performance and failures during db installs

Please follow the following steps to check and workaround the battery :

Failing CUP Installs - Disk Cache related

Problem
Installing Cisco Unified Presence fails on a virtual machine running on hardware such as the UCS C210M2 if the battery backup unit (BBU) is missing or running in a discharged state.

This condition occurs when the battery disk write cache is disabled. The effect is poor disk performance causing the database installation on Cisco Unified Presence to fail.

Solution
To fix this issue, manually enable the battery cache. This restores performance and completes the installation.

1. Enable SSH on the ESXi host by signing in via the management interface.
Note This is the management console available by connecting a monitor to the server, or via the Cisco Integrated Management Controller.

2. Copy the MegaCli program onto the ESXi host. MegaCli can be downloaded for free online. 

3. Run the following command to check the current state of the battery cache, it should say writeBack, writeThrough indicates the cache is not enabled :
../MegaCli -LDInfo -L0 -a0

4. If you cannot replace the BBU, run the following command to temporarily enable the cache: ./MegaCli -LDSetProp -CachedBadBBU -Lall -a0

5. Check the current cache policy again. It should now say "WriteBack". The battery cache is enabled and the Cisco Unified Presence installation should proceed to completion.

6. If a good battery is subsequently installed then run the following command to enable the cache proper again : ./MegaCli -LDSetProp -WB -Lall ?a0

NOTE:   Manually disabling the battery cache as a workaround is not advisable for customers as it could result indata lossin the event ofhard diskfailure. 

The battery should ideally be replaced prior to install attempt.

 

So let’s try and find the status of thebattery unit and if itsdegradedyou can always open a case to get it replaced in the long run but for the temporarily let’s see if we can enable the cache and if we can install presence if this is the issue.

 

더이상 정리하기 힘들다..

 

힘든게 아니라 귀찮다.. 아 졸려..

 

빨리 퇴근이나 하고 싶다.