Date: Thu, 24 Jul 2014 23:20:45 -0400 From: Glen Barber <gjb@FreeBSD.org> To: Warren Block <wblock@wonkity.com> Cc: freebsd-jail@FreeBSD.org Subject: Re: check_dhcp Message-ID: <20140725032045.GY1065@hub.FreeBSD.org> In-Reply-To: <alpine.BSF.2.11.1407242042240.3624@wonkity.com>
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[-- Attachment #1 --] On Thu, Jul 24, 2014 at 09:14:24PM -0600, Warren Block wrote: > net-mgmt/monitoring-plugins has a check_dhcp program used to test the > availability of a remote DHCP server. It has BSD-specific code, but seems > fairly dated and only works when all supposedly optional parameters are > given. However, it does work on a normal machine: > > OK: Received 1 DHCPOFFER(s), 1 of 1 requested servers responded, max lease time = 600 sec. > > But it does not work inside a jail, seeing no offers: > > CRITICAL: No DHCPOFFERs were received. > > Raw sockets and bpf are enabled in the jail. dhclient in the jail can > actually get a lease. Is there anything else that needs to be configured to > allow this to work in a jail? > > > > After 'make -C /usr/ports/net-mgmt/monitoring-plugins', the code in question > is check_dhcp.c in > work/monitoring-plugins-monitoring-plugins-b5611ea/plugins-root. It gives > these type of errors: > > % ./check_dhcp -s 192.168.1.1 > Error: if_nametoindex error - Device not configured. > > % ./check_dhcp -s 192.168.1.1 -i em0 > Error: Couldn't get hardware address from em0. sysctl 2 error - No such file or directory. > > After adding -m <jail card's MAC>, it gives no errors but never sees a > response. The problem, I suspect, is that bpf(4) does not exist in the jail. Glen [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJT0c0NAAoJELls3eqvi17QjHsP/3m3hBvbsop21I9PWdSwQfa9 H1mTmXT+FJDeuNaA1aSZ3jzqGt0+oqVUVPQ0JBZ8NsGEymrAzPyn8i6d7tg+sNEp m9KFBSr1opaqbr7Cu1Bjp9t/3Vfy3y3bJKFo1xguJK0hP0JIE6iXMtSTxbesA+6t t8dI7R2Dt6jqK7Bdatn7c3MUKz3VOc21BL3X1J4MGJY6yPJSEFe0e9VXsFNNIseR i2K8HvL6OGb4i+XYCYI5VDv6obCguP7KKIaGnVCeuEvDTBxYHQ0HY+KAoAHlwcia hwzI/JwdTDvodvyO2JNYkWkdwdBLihrxI0X3GV1SMaIWC3Lux9IoI1I53iL3jwaN CRsZs2ASKwGOWnBZssDphkEs3wbrVkmOOfX3w+2HNlqxvEFojl49pDTNNqzdU52+ f8mNwJIHxl0GIIifyfg1JFt2AYgePfG6Jg0nSz6jgj4kah1+9nVHXQUAVVhRar75 YgkqXcMKVQe+dOLfuhQXkGulEMxFKozqtfb5CRhjvn4qyzWpkc/IUY54ruJMtyAg JDAhLi3OK8wfG4KOIWxAJsWy4rM6+fWHzq9nn5B/lnF8pMT3QDdbopqm/9sLrt/S T0VcW0AqP38rINaersw/TyIGsYj5LE+SfShP8xGOkYHrwNWzC50YftPHKr+pU2pZ 4qG6bmx3P8Ltkr+kphMI =Ewnu -----END PGP SIGNATURE-----home | help
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