dbpath value available from the shell?

[Adam Greene]

Hello,

I would like to be able to retrieve some mongod server configuration
settings, like the dbpath, from within the shell.

is that possible? I couldn't find anything...

thanks,
Adam

[Kristina Chodorow]

Yes, check out the {getCmdLineOpts:1} command.

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[Adam Greene]

SWEET! I totally missed it when going over db.listCommands()

thank you kindly!

On Sep 21, 3:32 pm, Kristina Chodorow <krist...@10gen.com> wrote:
> Yes, check out the {getCmdLineOpts:1} command.
>
>
>
>
>
>
>
> On Tue, Sep 21, 2010 at 6:30 PM, Adam Greene <adam.gre...@gmail.com> wrote:
> > Hello,
>
> > I would like to be able to retrieve some mongod server configuration
> > settings, like the dbpath, from within the shell.
>
> > is that possible?  I couldn't find anything...
>
> > thanks,
> > Adam
>
> > --
> > You received this message because you are subscribed to the Google Groups
> > "mongodb-user" group.
> > To post to this group, send email to mongod...@googlegroups.com.
> > To unsubscribe from this group, send email to

> > mongodb-user...@googlegroups.com<mongodb-user%2Bunsubscribe@google groups.com>
> > .

[Kristina Chodorow]

No problem :)

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[Adam Greene]

ah, well, that doesn't always do it. if the --config flag is passed,
then it is usually stored in there. so getCmdLineOpts gets me most of
the way there, but not quite. If dbpath isn't available anywhere else,
I can parse through the attached config file.

thanks Kristina,
Adam

[Adam Greene]

well, this works (in ruby) ;)


cmd = "mongo --quiet --eval 'printjson(db.runCommand({getCmdLineOpts:
1}));' admin"
output = JSON.parse(`#{cmd}`)
db_path = output['argv'][output['argv'].index('--dbpath') + 1] if
output['argv'].index('--dbpath')
db_path ||= $1 if File.read(output['argv'][output['argv'].index('--
config') + 1]) =~ /dbpath\s*=\s*([^\s]*)/


this is starting to get ugly, but hey, no complaints!