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The connection between DataFlow Probe and UCMDB is not stable because of F5?

Issue: The connection between DataFlow Probe and UCMDB is not stable, is it because of F5?

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OS details:

UCMDB DataFlow Probe(V10.10) Server: win2008 standard SP2(64bit)

UCMDB Server(V10.10): win2008 enterprise R2(64bit)

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Deployment info:

2 UCMDB Servers with 1 UCMDB Writer Float IP which is configured in F5(V10) Load Balancer.

2 UCMDB DataFlow Probe Servers on another 2 machines

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Issue details:

1.The Probe status in "DataFlow Probe Setup" Pannel, switch between "disconnect" and "connected" frequently.

2.If configure 1st  DDM with float UCMDB IP, the connection is still un-stable; 2nd  DDM with static UCMDB IP the connection seems OK.

3.And in Probe log, I can see such error info which shows the communications between DDM and UCMDB Float IP is bad:

 

Connection reset by peer: socket write error

 

   I/O exception (java.net.SocketException) caught when processing request: Software caused connection abort: socket write error

 

   Failed sending results to the server, will retry later

 

   java.net.SocketException: Software caused connection abort: recv failed

 

   java.net.SocketTimeoutException: Read timed out

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Question:

1. Does any one have some similiar experience or give some suggestion?

2. It seems the F5 not working very properly, hope for some F5 expertise.

Very appreciated for that!!!

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Have a good day!

 

Thanks& BRs

yuanji

email: yuanji.xuan@hp.com

 

 

 

 

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Re: The connection between DataFlow Probe and UCMDB is not stable because of F5?

This error can occur when the local network system aborts a connection after data retransmission fails (receiver never acknowledges data sent on a datastream socket).

Please work with F5 support, it most probably will end up there.

Regards
-Dmitry Gomel, PMP
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Re: The connection between DataFlow Probe and UCMDB is not stable because of F5?

Thanks a lot! I also considered whether F5 is wrong.

 

So I checked the communication between F5 and UCMDB Writer Server, it seems F5 working fine, but the UCMDB Writer Server can't update timestamp and caused the response timeout.

I don't know how to move on, is anyone has some idea?

 

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Check details:

1. I checked F5 local traffic, The heal monitor result told the UCMDB Writer Server down:

 

Sat Apr 26 04:09:31 MMT 2014 notice local/YGNDC-F5-01 mcpd[5072] 01070638 Pool member 10.55.75.26:8080 monitor status down.

Sat Apr 26 04:09:37 MMT 2014 notice local/YGNDC-F5-01 mcpd[5072] 01070727 Pool member 10.55.75.26:8080 monitor status up. 

 

 

2. I also used the WireShark to monitor the TCP Packages on UCMDB Writer Server, when such issue occured, there is no response from UCMDB Writer Server to F5.

 

3. And I check the UCMDB HA Log, it seems UCMDB Writer faced some issue and failed to update timestamp& response:

 

2014-04-25 14:41:47,107 [INFO ] This server (BOTITSAPPV1015_1398442176699) is going to be the writer, because the writer (BOTITSAPPV1015_1398333093189) did not update its timestamp for more than: 164 seconds

2014-04-25 14:41:47,107 [INFO ]                (current DB time: 1398413507, writer timestamp was:1398413343, writer inactivity period threshold:120)

2014-04-25 14:41:47,107 [INFO ] serverId:BOTITSAPPV1015_1398442176699 is now the writer.

2014-04-25 14:41:47,200 [INFO ] HA sync model: URM_customerId_-2147483648 started to load from revision: 351

 

 

 

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