[hobbit] NFS and shared clientlaunch.cfg files

[Daniel Bourque]

sup pimp ! nice to see you here.

you idea should work good, it would keep all machines from needlessly 
starting a script that justs exit. Thing is you'll have to create a 
clientlaunch.cfg file or simlink to the default one for each machine 
running hobbit.

Another Idea , similar to Charle Jone's idea, is to launch a wrapper 
script from clientlaunch.cfg. A wrapper called mycheck just looks for a 
script named mycheck.$BBHOSTNAME, exec's it if it exists or exits with 0.

more than one way to skin a cat , hobbit's like the swiss army of knife 
of system monitoring :)


-Dan

Charles Jones wrote:

> I encountered this exact problem, with monitoring a few hundred 
> servers that had a common NFS filesystem. For the most part, Hobbit 
> handles this gracefully as it uses unique names for logfiles and such. 
> I ran into problems though when I wanted an extra script to run, but 
> just on certain hosts. I ended up just having the ext script check the 
> hostname and exit gracefully if it was not the host it should run on:
> HOSTNAME=`/bin/hostname`
>
> if ! echo $HOSTNAME | egrep -q 'app-28|web-12|web-13|db-10' ; then
>    exit 0
> fi
>
> What I would really like to see (and I posted this on the list 
> before), is a server-side configuration of what scripts or even 
> commands to run on the remote hosts. I doubt this will be implemented 
> though, because too many people view it as a security risk.  What I 
> proposed was a config file with a format something like:
>
> <hostname> <script path> <interval>
> example:
> host1.domain.com /home/hobbit/client/ext/somescript.sh 5m
>
> The above would instruct the hobbit client on host1.domain.com to run 
> the somescript.sh every 5 minutes.
>
> Another way to do it is just use cron and run the script via bbcmd, 
> but I dont like things that run with hobbit to be able to run when 
> Hobbit is not running (if I have the client down for some reason, the 
> cron would still kickoff unless I also disabled it).
>
> -Charles
>
>
> Michael Dunne wrote:
>
>>Greetings fellow Hobbit-ers,
>>
>>I was recently tasked with monitoring 100+ solaris systems. Feeling undaunted I reached into 
>>my trusty IT toolbox and pulled out one of my favorite tools, Hobbit. What I encountered is 
>>as followed. 
>>
>>The systems utilize NFS mounted directories. I installed the client files into /usr/local/
>>hobbit/client and voila! they were available to all of my systems. The issue that I encountered 
>>was that I wished to run different external scripts per client, but with a "shared" clientlaunch 
>>file I could not see how to do this. (This is where I cringe as I suspect that my solution is 
>>rather naive) What I would up doing is modifying the runclient.sh file as reflected below:
>>
>>
>>~/client hobbit$ diff runclient.sh runclient.ren 
>>79c79
>><               $0 --hostname="$MACHINEDOTS" stop
>>---
>>  
>>
>>>              $0 stop
>>>    
>>>
>>83c83
>><       $HOBBITCLIENTHOME/bin/hobbitlaunch --config=$HOBBITCLIENTHOME/etc/
>>clientlaunch.cfg --log=$HOBBITCLIENTHOME/logs/clientlaunch.log --pidfile=
>>$HOBBITCLIENTHOME/logs/clientlaunch.$MACHINEDOTS.pid
>>---
>>  
>>
>>>      $HOBBITCLIENTHOME/bin/hobbitlaunch --config=$HOBBITCLIENTHOME/etc/
>>>    
>>>
>>$MACHINEDOTS.clientlaunch.cfg --log=$HOBBITCLIENTHOME/logs/
>>$MACHINEDOTS.clientlaunch.log --pidfile=$HOBBITCLIENTHOME/logs/clientlaunch.
>>$MACHINEDOTS.pid
>>102c102
>><               $0 --hostname="$MACHINEDOTS" stop
>>---
>>  
>>
>>>              $0 stop
>>>    
>>>
>>107c107
>><       $0 --hostname="$MACHINEDOTS" --os="$BBOSTYPE" start
>>---
>>  
>>
>>>      $0 start
>>>    
>>>
>>My questions are as followed. 
>>
>>Has anyone encountered this specific issue before, and if so how did you address it?
>>Does my, admittedly inelegant, solution pose any issues in relation to long term use? 
>>
>>I searched the list and was unable to find anything specific to my issue. 
>>
>>
>>Thanks in advance for reading this missive.
>>
>>
>>Best regards,
>>
>>Mike
>>
>>To unsubscribe from the hobbit list, send an e-mail to
>>hobbit-unsubscribe at hswn.dk <mailto:hobbit-unsubscribe at hswn.dk>
>>  
>>
>
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