Antw: Re: Q: ping (ocf:pacemaker:ping) from specific address?
"Ulrich Windl" <[email protected]>
| Newsgroups | gmane.linux.highavailability.user |
|---|---|
| Message-ID | <[email protected]> |
>>> Lars Ellenberg <[email protected]> schrieb am 04.09.2014 um 15:28 in Nachricht <[email protected]>: > On Thu, Sep 04, 2014 at 02:32:14PM +0200, Ulrich Windl wrote: >> Hi! >> >> I'm using ocf:pacemaker:ping to ping some specific address. The requirement > is that a specific source address (that is on a local interface) is being > used to ping a destination. So if the resource moves between nodes, the same > source address shall be used. >> >> The address to use is a secondary adress on interface bond0, like bond0:xyz. > I can spacify "-I bond0" and "-I bond0:xyz", but the latter seems to be > ignores, as if I just said "-I bond0". Ping is from iputils-ss021109-292.28.1 > (SLES11 SP3). >> >> I had this requirement for HP-UX years ago, and the solution was to install a > special local ping that allowed to select the source address. > >> So my preferences are: >> 1) Get it done with the software I have > > ping -w 2 -c 3 -I 127.0.0.1 8.8.8.8 > ping: sendmsg: Invalid argument > ping: sendmsg: Invalid argument > PING 8.8.8.8 (8.8.8.8) from 127.0.0.1 : 56(84) bytes of data. > > --- 8.8.8.8 ping statistics --- > 2 packets transmitted, 0 received, 100% packet loss, time 1008ms > > ping -w 2 -c 3 -I 10.11.12.13 8.8.8.8 > bind: Cannot assign requested address > > ping -w 2 -c 3 -I 10.43.9.55 8.8.8.8 > PING 8.8.8.8 (8.8.8.8) from 10.43.9.55 : 56(84) bytes of data. > 64 bytes from 8.8.8.8: icmp_seq=1 ttl=41 time=27.4 ms > 64 bytes from 8.8.8.8: icmp_seq=2 ttl=41 time=27.4 ms > > --- 8.8.8.8 ping statistics --- > 2 packets transmitted, 2 received, 0% packet loss, time 1000ms > rtt min/avg/max/mdev = 27.405/27.430/27.456/0.167 ms > > Does that help? Hi! Yes, it helps: The problems with ping are: 1) There is no error if you use an interface alias with -I (like bond0:xyz) 2) You can use an IP address as "interface" for -I 3), but you cannot use a hostname (resolving to the same IP address as in 2)): "ping: unknown iface <hostname>" Regards, Ulrich > > -- > : Lars Ellenberg > : LINBIT | Your Way to High Availability > : DRBD/HA support and consulting http://www.linbit.com > > DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems