Date: Thu, 16 Oct 2008 22:07:43 +0200 From: Per olof Ljungmark <peo@intersonic.se> To: freebsd-questions@freebsd.org Subject: Re: FreeBSD and Nagios - permissions Message-ID: <48F79F0F.5020402@intersonic.se> In-Reply-To: <48F75EE5.2090908@intersonic.se> References: <48F6EDF2.4070109@intersonic.se> <20081016080452.GA4150@icarus.home.lan> <20081016110501.GB80147@torus.slightlystrange.org> <20081016124700.GC80147@torus.slightlystrange.org> <48F75EE5.2090908@intersonic.se>
next in thread | previous in thread | raw e-mail | index | archive | help
Per olof Ljungmark wrote: > Daniel Bye wrote: >> On Thu, Oct 16, 2008 at 12:05:01PM +0100, Daniel Bye wrote: >>> It is possible to configure sudo to run only exactly the required >>> command >>> (including arguments) precisely to guard against this type of abuse - >>> I use it extensively in my own nagios setup. >>> >>> This Cmnd_Alias in sudoers will do the trick: >>> >>> Cmnd_Alias NAGIOS_CMNDS = /sbin/camcontrol inquiry da0 >>> >>> man sudoers for more information about what you can do with sudo. >> >> I just realised this example is woefully incomplete - apologies for that. >> >> There are a few ways you can set up /usr/local/etc/sudoers (make sure >> you use visudo to edit it, as it will catch any syntax errors for you, >> thus helping somewhat to prevent breaking your setup). >> >> The simplest case will just be to allow nagios to run the command, as >> root, >> without a password: >> >> nagios ALL=(root) NOPASSWD: /sbin/camcontrol inquiry da0 >> >> If, as is quite possible, nagios should be able to run more than just >> that one command, you can define a Cmnd_Alias, as above. To include more >> than one command in the alias, simply separate them with a comma. You >> can use `\' to escape newlines and make your file a little easier to >> read: >> >> Cmnd_Alias NAGIOS_CMNDS = /sbin/camcontrol inquiry da0 \ >> /sbin/camcontrol inquiry da1 >> >> and so on. Now, to use that alias, set the user's permissions to >> >> nagios ALL=(root) NOPASSWD: NAGIOS_CMNDS For the records, even this won't work because nagois needs access to /dev/xpt0 as well and once there sudo can't help. sudo -u nagios /sbin/camcontrol inquiry da0 camcontrol: cam_lookup_pass: couldn't open /dev/xpt0 cam_lookup_pass: Permission denied --per
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?48F79F0F.5020402>