diff options
Diffstat (limited to 'sbin/dumpon')
| -rw-r--r-- | sbin/dumpon/dumpon.8 | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/sbin/dumpon/dumpon.8 b/sbin/dumpon/dumpon.8 index a62bd366dfb4..d5f45d4e03ff 100644 --- a/sbin/dumpon/dumpon.8 +++ b/sbin/dumpon/dumpon.8 @@ -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 , |