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How to tail log in one script?

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# 1  
Old 02-26-2010
How to tail log in one script?
I have three prodcution box

Prod1
Prod2
Prod3

I want to write a script which tail the log for each production box
and put it into some file which I have want to tail

For example

Prod1
-----
Code:
TIMER IXN=MEMPUT, USR=GGu1, elapsed = 0.176 seconds.
11:41:44 [175] AUDIT MEMPUT: member IC:5151093501, being processed.
11:41:44 [178] TIMER IXN=MEMGET, USR=GGu1, elapsed = 0.282 seconds.
11:41:44 [178] TIMER MPI_InvokeCallback: IXN=MEMGET, USR=GGu1, CBTYPE=2, elapsed=0.009 seconds.
11:41:44 [178] TIMER MPI_InvokeCallback: IXN=MEMPUT, USR=GGu1, CBTYPE=1, elapsed=0.298 seconds.
11:41:44 [173] TIMER IXN=MEMGET, USR=GGu1, elapsed = 0.291 seconds.
11:41:44 [173] TIMER MPI_InvokeCallback: IXN=MEMGET, USR=GGu1, CBTYPE=2, elapsed=0.010 seconds.
11:41:44 [178] AUDIT MEMPUT: member IC:3514156955, being processed.
11:41:44 [173] TIMER MPI_InvokeCallback: IXN=MEMPUT, USR=GGu1, CBTYPE=1, elapsed=0.309 seconds.
11:41:44 [173] AUDIT MEMPUT: member IC:4615098331, being processed.
11:41:44 [150] AUDIT MEMPUT: member IC:556706375

Prod2
---
Code:
TIMER IXN=MEMPUT, USR=GGu1, elapsed = 0.176 seconds.
11:41:44 [175] AUDIT MEMPUT: member IC:5151093501, being processed.
11:41:44 [178] TIMER IXN=MEMGET, USR=GGu1, elapsed = 0.282 seconds.
11:41:44 [178] TIMER MPI_InvokeCallback: IXN=MEMGET, USR=GGu1, CBTYPE=2, elapsed=0.009 seconds.
11:41:44 [178] TIMER MPI_InvokeCallback: IXN=MEMPUT, USR=GGu1, CBTYPE=1, elapsed=0.298 seconds.
11:41:44 [173] TIMER IXN=MEMGET, USR=GGu1, elapsed = 0.291 seconds.
11:41:44 [173] TIMER MPI_InvokeCallback: IXN=MEMGET, USR=GGu1, CBTYPE=2, elapsed=0.010 seconds.
11:41:44 [178] AUDIT MEMPUT: member IC:3514156955, being processed.
11:41:44 [173] TIMER MPI_InvokeCallback: IXN=MEMPUT, USR=GGu1, CBTYPE=1, elapsed=0.309 seconds.
11:41:44 [173] AUDIT MEMPUT: member IC:4615098331, being processed.
11:41:44 [150] AUDIT MEMPUT: member IC:556706375

Prod3
----
Code:
TIMER IXN=MEMPUT, USR=GGu1, elapsed = 0.176 seconds.
11:41:44 [175] AUDIT MEMPUT: member IC:5151093501, being processed.
11:41:44 [178] TIMER IXN=MEMGET, USR=GGu1, elapsed = 0.282 seconds.
11:41:44 [178] TIMER MPI_InvokeCallback: IXN=MEMGET, USR=GGu1, CBTYPE=2, elapsed=0.009 seconds.
11:41:44 [178] TIMER MPI_InvokeCallback: IXN=MEMPUT, USR=GGu1, CBTYPE=1, elapsed=0.298 seconds.
11:41:44 [173] TIMER IXN=MEMGET, USR=GGu1, elapsed = 0.291 seconds.
11:41:44 [173] TIMER MPI_InvokeCallback: IXN=MEMGET, USR=GGu1, CBTYPE=2, elapsed=0.010 seconds.
11:41:44 [178] AUDIT MEMPUT: member IC:3514156955, being processed.
11:41:44 [173] TIMER MPI_InvokeCallback: IXN=MEMPUT, USR=GGu1, CBTYPE=1, elapsed=0.309 seconds.
11:41:44 [173] AUDIT MEMPUT: member IC:4615098331, being processed.
11:41:44 [150] AUDIT MEMPUT: member IC:556706375

I using tail -100 which is not correct as i want to capture logs by tail -f

Code:
#!/bin/ksh
BOX_LOGDIR="prod_01 prod_02 prod_03"
LOGDIR=/usr/local/cdi/data/prod_02/hub_instance/wag_prod85b/log
while true
do
for DIR in ${BOX_LOGDIR}
do
  FILE=$DIR
  export FILE1=`ls -t /usr/local/cdi/data/${DIR}/hub_instance/wag_prod85b/log/mpinet_wag_prod85b*.mlg | head -1`
  #export FILE1=`ls -t /home/csd/hxd/Harish/${DIR}/mpinet_wag_prod85b*.mlg | head -1`
   echo >>$LOGDIR/multi_engine.log 
   echo $FILE >>$LOGDIR/multi_engine.log
  tail -100 $FILE1 >>$LOGDIR/multi_engine.log
  echo >>$LOGDIR/multi_engine.log
done
sleep 10
done



---------- Post updated 02-26-10 at 12:12 PM ---------- Previous update was 02-25-10 at 01:46 PM ----------

Please reply if anybody know the solution of my problem.
Last edited by mr_harish80; 02-25-2010 at 02:15 PM..
# 2  
Old 02-26-2010
If these logs are syslog controlled, you can send them to a central machine for processing.
# 3  
Old 02-26-2010
This is not a syslog .
My motive is to tail the logs from three production server in one file
without logging individually into each production server.
# 4  
Old 02-26-2010
Please post the command(s) you use to see each individual log.
Btw. Blending the logs from three servers is unlikely to be sensible or practical.
Do you have a particular reason like monitoring each log for particular error messages?
# 5  
Old 02-28-2010
yes sometimes the my server and database intraction is very slow and this cause my production server to hang by some reason.
so ussally I have to login to different prodcution server and check the log detail.
I have wrote a code for this also which only give 100 lines of the logs at one time.

The scripts that in I have wrote is

#!/bin/ksh
BOX_LOGDIR="prod_01 prod_02 prod_03"
LOGDIR=/usr/local/cdi/data/prod_02/hub_instance/wag_prod85b/log
while true
do
for DIR in ${BOX_LOGDIR}
do
FILE=$DIR
export FILE1=`ls -t /usr/local/cdi/data/${DIR}/hub_instance/wag_prod85b/log/mpinet_wag_prod85b*.mlg | head -1`
#export FILE1=`ls -t /home/csd/hxd/Harish/${DIR}/mpinet_wag_prod85b*.mlg | head -1`
echo >>$LOGDIR/multi_engine.log
echo $FILE >>$LOGDIR/multi_engine.log
tail -100 $FILE1 >>$LOGDIR/multi_engine.log
echo >>$LOGDIR/multi_engine.log
done
sleep 10
done

In this case I have used -> tail -100 $FILE1 >>$LOGDIR/multi_engine.log

From this script I only tail -100 lines of log file from different server to multi_engine.log file I want to use tail -f in the script.
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