From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1S21lG-00014P-60 for garchives@archives.gentoo.org; Mon, 27 Feb 2012 14:41:10 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 3A3F1E0775; Mon, 27 Feb 2012 14:41:01 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by pigeon.gentoo.org (Postfix) with ESMTP id F0869E066A for ; Mon, 27 Feb 2012 14:40:02 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id 6C0241B4017 for ; Mon, 27 Feb 2012 14:40:02 +0000 (UTC) X-Virus-Scanned: by amavisd-new using ClamAV at gentoo.org X-Spam-Flag: NO X-Spam-Score: -2.645 X-Spam-Level: X-Spam-Status: No, score=-2.645 tagged_above=-999 required=5.5 tests=[AWL=-0.733, BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=no Received: from smtp.gentoo.org ([127.0.0.1]) by localhost (smtp.gentoo.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sPaqwUnvJTOH for ; Mon, 27 Feb 2012 14:39:56 +0000 (UTC) Received: from plane.gmane.org (plane.gmane.org [80.91.229.3]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.gentoo.org (Postfix) with ESMTPS id E09326443E for ; Mon, 27 Feb 2012 14:39:55 +0000 (UTC) Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1S21jt-0002Na-2T for gentoo-user@gentoo.org; Mon, 27 Feb 2012 15:39:45 +0100 Received: from rrcs-71-40-157-251.se.biz.rr.com ([71.40.157.251]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 27 Feb 2012 15:39:45 +0100 Received: from wireless by rrcs-71-40-157-251.se.biz.rr.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 27 Feb 2012 15:39:45 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: gentoo-user@lists.gentoo.org From: James Subject: [gentoo-user] Re: Safe way to test a new kernel? Date: Mon, 27 Feb 2012 14:39:28 +0000 (UTC) Message-ID: References: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: sea.gmane.org User-Agent: Loom/3.14 (http://gmane.org/) X-Loom-IP: 71.40.157.251 (Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20120213 Firefox/10.0 SeaMonkey/2.7) X-Archives-Salt: 81e56cf9-0287-4eba-8c31-e953696e7e02 X-Archives-Hash: 74c166f55520cb162d4cc14e2db80f65 Grant gmail.com> writes: > I need to test a kernel config change on a remote system. Is there a > safe way to do this? The fallback thing in grub has never worked for > me. When does that ever work? Grant, If you have more than one system there, you can set the system to use the serial port as a console. Then run a serial cable into the second system and ssh into it to watch the boot process. Getting the keyboard to work correctly via the ssh --> console-over-serial-port can be tricky so it's best to set it up before you deploy remote hardware. Also, I have used a cheap ebedded linux system when the second system is not available. Years ago, I even built a "reboot box"; it was an embedded system with 4 relays and a 2 serial ports connected to different system. I could physically remotely toggle the power. Several companies build these devices, but, I have not used one in years. Here is a google example I just found (never used this product) http://www.youtube.com/watch?v=s9odA7LH91c Just find a cheap embedded linux board with a 3-5 VAC(120). hth, James