Re: [PLUG] debugging an init script

[Pat Barron <pat@lectroid.com>]

This is kind of a "big stick" to throw at a problem like this, but if all else fails you could try to use "strace -f" to trace through the execution of the script.  You'll get a lot of data out of this, but the answer might be in there ... somewhere.

--Pat.

On 1/15/2014 2:02 PM, Carl Johnson wrote:

Nope. Nothing of any use unfortunately.

On Wed, Jan 15, 2014 at 12:44 PM, Jeff Bailey <skydiver38@verizon.net> wrote:

I'm not super familiar with these things, but nothing in dmesg or sys.log?

 

 

On 01/15/14, Carl Johnson<cjohnson19791979@gmail.com> wrote:

 

In this case it's the vboxweb script that comes in the latest virtualbox rpm. I don't see anything like that that I could modify in it.

"Eric at Lucii.org" <eric@lucii.org> wrote:
>On 01/15/2014 11:46 AM, Carl Johnson wrote:
>> Can someone in PLUG can help me out? My google-fu isn't that strong
>today.
>>
>> I've a Centos 6.5 box that has a service that won't start. Every time
>I run "service <script name> start" I get a red "[FAILED] message.
>>
>> Does anyone have any idea how I can log/watch/debug this script to
>see why/where it's failing as it runs? Can I redirect the sub-shell
>output to a logfile somehow? Is there a way to make it send all output
>to stdout?
>>
>> All I know right now is that it's failing. The script doesn't have
>the logic in it to tell me "xyz.conf is missing....... [FAILED] or that
>it's failing because it can't write a PID to /var/run" or something
>like that.
>
>When I (infrequently) do this I look in the script and find the command
>that it's executing to start the
>service (99% of the init.d scripts are boilerplate.) Research that
>command and find out how to increase the
>verbosity of it's logs. Make that change to the file (just comment out
>the actual line and replace it with
>your debug line.
>
>For example, replace:
> fooserver ${OPTS}
>with:
> fooserver -v ${OPTS}
>or:
> fooserver -d 2 ${OPTS}
>Whatever.
>
>Then start it.... it still breaks.
>Then look in the logs.
>
>Hope that helps... it's worked for me in the past.
>Eric





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