From owner-svn-src-head@freebsd.org Wed May 22 03:49:40 2019 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id EC05E159A98C; Wed, 22 May 2019 03:49:39 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 8EB968ED2C; Wed, 22 May 2019 03:49:39 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 66F5DFC6C; Wed, 22 May 2019 03:49:39 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x4M3nd9m041359; Wed, 22 May 2019 03:49:39 GMT (envelope-from markj@FreeBSD.org) Received: (from markj@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x4M3ndtV041358; Wed, 22 May 2019 03:49:39 GMT (envelope-from markj@FreeBSD.org) Message-Id: <201905220349.x4M3ndtV041358@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: markj set sender to markj@FreeBSD.org using -f From: Mark Johnston Date: Wed, 22 May 2019 03:49:39 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r348082 - head/sbin/dumpon X-SVN-Group: head X-SVN-Commit-Author: markj X-SVN-Commit-Paths: head/sbin/dumpon X-SVN-Commit-Revision: 348082 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 8EB968ED2C X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.94 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.94)[-0.941,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 May 2019 03:49:40 -0000 Author: markj Date: Wed May 22 03:49:38 2019 New Revision: 348082 URL: https://svnweb.freebsd.org/changeset/base/348082 Log: Provide an example of using dhclient-script(5) to configure netdump. Reviewed by: cem MFC after: 1 week Event: Waterloo Hackathon 2019 Differential Revision: https://reviews.freebsd.org/D20345 Modified: head/sbin/dumpon/dumpon.8 Modified: head/sbin/dumpon/dumpon.8 ============================================================================== --- head/sbin/dumpon/dumpon.8 Wed May 22 03:42:03 2019 (r348081) +++ head/sbin/dumpon/dumpon.8 Wed May 22 03:49:38 2019 (r348082) @@ -28,7 +28,7 @@ .\" From: @(#)swapon.8 8.1 (Berkeley) 6/5/93 .\" $FreeBSD$ .\" -.Dd May 6, 2019 +.Dd May 21, 2019 .Dt DUMPON 8 .Os .Sh NAME @@ -317,6 +317,49 @@ Note that the live kernel might be at a different path which can be examined by looking at the .Va kern.bootfile .Xr sysctl 8 . +.Pp +The +.Nm +.Xr rc 8 +script runs early during boot, typically before networking is configured. +This makes it unsuitable for configuring +.Xr netdump +when the client address is dynamic. +To configure +.Xr netdump +when +.Xr dhclient +binds to a server, +.Xr dhclient-script +can be used to run +.Xr dumpon . +For example, to automatically configure +.Xr netdump +on the vtnet0 interface, add the following to +.Pa /etc/dhclient-exit-hooks . +.Bd -literal +case $reason in +BOUND|REBIND|REBOOT|RENEW) + if [ "$interface" != vtnet0 ] || [ -n "$old_ip_address" -a \\ + "$old_ip_address" = "$new_ip_address" ]; then + break + fi + if [ -n "$new_routers" ]; then + # Take the first router in the list. + gateway_flag="-g ${new_routers%% *}" + fi + dumpon -c $new_ip_address -s $server $gateway_flag vtnet0 + ;; +esac +.Ed +.Pp +Be sure to fill in the server IP address and change the interface name if +needed, and to configure +.Pp +.Dl dumpdev="NO" +.Pp +in +.Pa /etc/rc.conf . .Sh SEE ALSO .Xr gzip 1 , .Xr kgdb 1 ,