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Need to Understand troubleshooting related to network stuffs


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#1 anantwag19

anantwag19

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Posted 01 January 2016 - 05:01 AM

Hi

 

I have the below scenario .

 

Server A (Linux) : Weblogic Server ------------> Points to Datasource --------------->[Oracle Database ]  installed on Server B((Linux).

 

 

I want to troubelshoot in this way Whever any application uses database .

 

I want these traces what time  this Weblogic server has connected via  sockets  on Server B.

 

for example .

 

Machine name or i/p ------->Established --->timestamp

 

not sure if i can acchive using netstat ?
 



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#2 mremski

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Posted 01 January 2016 - 05:47 AM

look at the output from netstat --inet -n, that will give you protocol type, send/receive q stats, local and remote(foreign) address and the connection state.  That gives you everything but the timestamp.  You may be able to accomplish what you want with some iptables rules on your Server A.  basically pass rules that will match a destination of server B and oracle db port, toss in syn/ack flags and you can get the established state.  Then make that rule log and all you need to do is grep in the log file.  Anything else you would wind up doing some kind of polling (like a script that does a netstat command, greps for the serverb address, sleeps, then repeats) unless there is a configuration option somewhere to have the weblogic server emit events everytime it does a connection to server B.


FreeBSD since 3.3, only time I touch Windows is to fix my wife's computer





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