Re: master->backup CARP issue
On 15:23:49 Nov 14, Eugene wrote: > No, actually i haven't tried to play with "advskew" and "advbase" > parameters, and I'll give it a try, thanks. I'll report results if it > helps. > > Yes, NIC's seemed to be reliable. > > If I should try a different NIC then which one should I switch, all > 4? I dunno buddy. I would rather you first try to play with the "advskew" and "advbase" parameters. In case that doesn't work then you can go for plan B. There is a very remote chance of a faulty NIC causing trouble here. So let us get to it only when warranted. Best, Girish ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: master->backup CARP issue
Hello Girish, Wednesday, November 14, 2007, 1:25:41 PM, Girish Venkatachalam <[EMAIL PROTECTED]> wrote: GV> On 09:50:51 Nov 14, Eugene wrote: >> Hello freebsd, >> >> >> We have two FreeBSD boxes, each one has 4 CARP interfaces in >> preempt >> mode, without arp balancing. >> >> Backup without any reason preempts Master and after a while >> (an hour >> or two) it becomes Backup again. >> When Backup becomes Master on Master box >> net.inet.carp.suppress_preempt: 1, but all interfaces are up and >> seemed to work properly. >> >> >> Is there any ways to debug this issue? >> >> >> Thanks in advance! GV> I could be talking nonsense but still... GV> Have you tried adjusting the "advskew" and "advbase" parameters? GV> Another thing. Are the NICs reliable? GV> Have you tried with a different NIC? GV> Looks like you don't have a faulty NIC here. So it could be the GV> other GV> possibility. No, actually i haven't tried to play with "advskew" and "advbase" parameters, and I'll give it a try, thanks. I'll report results if it helps. Yes, NIC's seemed to be reliable. If I should try a different NIC then which one should I switch, all 4? -- Best regards, Eugenemailto:[EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: master->backup CARP issue
On 09:50:51 Nov 14, Eugene wrote: > Hello freebsd, > > > We have two FreeBSD boxes, each one has 4 CARP interfaces in preempt > mode, without arp balancing. > > Backup without any reason preempts Master and after a while (an hour > or two) it becomes Backup again. > When Backup becomes Master on Master box > net.inet.carp.suppress_preempt: 1, but all interfaces are up and > seemed to work properly. > > > Is there any ways to debug this issue? > > > Additional info: > > #uname -v > FreeBSD 6.1-RELEASE-p7 > > Master: > # grep carp /var/log/messages > Nov 14 01:50:59 atlas kernel: carp3: MASTER -> BACKUP (more frequent > advertisement received) > Nov 14 01:52:30 atlas kernel: carp3: MASTER -> BACKUP (more frequent > advertisement received) > Nov 14 02:43:55 atlas kernel: carp3: MASTER -> BACKUP (more frequent > advertisement received) > Nov 14 02:59:12 atlas kernel: carp3: MASTER -> BACKUP (more frequent > advertisement received) > Nov 14 03:26:13 atlas kernel: carp3: MASTER -> BACKUP (more frequent > advertisement received) > Nov 14 03:26:32 atlas kernel: carp3: MASTER -> BACKUP (more frequent > advertisement received) > Nov 14 04:58:39 atlas kernel: carp3: MASTER -> BACKUP (more frequent > advertisement received) > Nov 14 05:53:27 atlas kernel: carp3: MASTER -> BACKUP (more frequent > advertisement received) > Nov 14 06:01:12 atlas kernel: carp3: MASTER -> BACKUP (more frequent > advertisement received) > Nov 14 06:03:36 atlas kernel: carp2: BACKUP -> MASTER (preempting a slower > master) > Nov 14 06:03:36 atlas kernel: carp0: BACKUP -> MASTER (preempting a slower > master) > Nov 14 06:03:36 atlas kernel: carp1: BACKUP -> MASTER (preempting a slower > master) > Nov 14 06:03:38 atlas kernel: carp3: BACKUP -> MASTER (preempting a slower > master) > > Master & Backup (in normal state) > #sysctl -a | grep "net.inet.carp." > net.inet.carp.allow: 1 > net.inet.carp.preempt: 1 > net.inet.carp.log: 2 > net.inet.carp.arpbalance: 0 > net.inet.carp.suppress_preempt: 0 > > all NICs - 3Com 3c905C-TX > > Master: > #ifconfig | grep -A2 carp > carp0: flags=49 mtu 1500 > inet 10.1.1.3 netmask 0xff00 > carp: MASTER vhid 1 advbase 1 advskew 10 > carp1: flags=49 mtu 1500 > inet 10.1.2.3 netmask 0xff00 > carp: MASTER vhid 2 advbase 1 advskew 10 > carp2: flags=49 mtu 1500 > inet 10.1.3.3 netmask 0xff00 > carp: MASTER vhid 3 advbase 1 advskew 10 > carp3: flags=49 mtu 1500 > inet 10.1.4.3 netmask 0xfff8 > carp: MASTER vhid 4 advbase 1 advskew 10 > > Backup > #ifconfig |grep -A2 carp > carp0: flags=49 mtu 1500 > inet 10.1.1.3 netmask 0xff00 > carp: BACKUP vhid 1 advbase 1 advskew 20 > carp1: flags=49 mtu 1500 > inet 1.1.2.3 netmask 0xff00 > carp: BACKUP vhid 2 advbase 1 advskew 20 > carp2: flags=49 mtu 1500 > inet 10.1.3.3 netmask 0xff00 > carp: BACKUP vhid 3 advbase 1 advskew 20 > carp3: flags=49 mtu 1500 > inet 10.1.4.3 netmask 0xfff8 > carp: BACKUP vhid 4 advbase 1 advskew 20 > > Master: > > #netstat -ni |grep carp > NameMtu Network Address Ipkts IerrsOpkts Oerrs > Coll > carp0 1500 311894 1 5926852 0 > 0 > carp0 1500 10.1.110.1.1.3 42293866 - 263238 - > - > carp1 1500 48653 1 5663615 0 > 0 > carp1 1500 10.1.210.1.2.3 153785957 -0 - > - > carp2 1500 48661 1 5663615 107 > 0 > carp2 1500 10.1.3/24 10.1.3.3476782 -0 - > - > carp3 1500 48974 1 5663634 1155 > 0 > carp3 1500 10.1.4.3/ 10.1.4.3 6885622 -0 - > - > > > Backup: > > #netstat -ni |grep carp > NameMtu Network Address Ipkts IerrsOpkts Oerrs > Coll > carp0 1500 35221 0 6437 0 > 0 > carp0 1500 10.1.110.1.1.3 8699 -0 - > - > carp1 1500 35220 0 6438 0 > 0 > carp1 1500 10.1.210.1.2.3 86000 -0 - > - > carp2 1500 35221 0 6437 0 > 0 > carp2 1500 10.1.3/24 10.1.3.3 0 -0 - > - > carp3 1500 35190 0 644323 > 0 > carp3 1500 10.1.4.3/ 10.1.4.3 958 -0 - > - > > > Thanks in advance! I could be talking nonsense but still... Have you tried adjusting the "advskew" and "advbase" parameters? Another thing. Are the NICs reliable? Have you tried with a different NIC? Looks like you don't have a faulty NIC here. So it could be the other possibility. Thanks. regards, Girish ___
master->backup CARP issue
Hello freebsd, We have two FreeBSD boxes, each one has 4 CARP interfaces in preempt mode, without arp balancing. Backup without any reason preempts Master and after a while (an hour or two) it becomes Backup again. When Backup becomes Master on Master box net.inet.carp.suppress_preempt: 1, but all interfaces are up and seemed to work properly. Is there any ways to debug this issue? Additional info: #uname -v FreeBSD 6.1-RELEASE-p7 Master: # grep carp /var/log/messages Nov 14 01:50:59 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 01:52:30 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 02:43:55 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 02:59:12 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 03:26:13 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 03:26:32 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 04:58:39 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 05:53:27 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 06:01:12 atlas kernel: carp3: MASTER -> BACKUP (more frequent advertisement received) Nov 14 06:03:36 atlas kernel: carp2: BACKUP -> MASTER (preempting a slower master) Nov 14 06:03:36 atlas kernel: carp0: BACKUP -> MASTER (preempting a slower master) Nov 14 06:03:36 atlas kernel: carp1: BACKUP -> MASTER (preempting a slower master) Nov 14 06:03:38 atlas kernel: carp3: BACKUP -> MASTER (preempting a slower master) Master & Backup (in normal state) #sysctl -a | grep "net.inet.carp." net.inet.carp.allow: 1 net.inet.carp.preempt: 1 net.inet.carp.log: 2 net.inet.carp.arpbalance: 0 net.inet.carp.suppress_preempt: 0 all NICs - 3Com 3c905C-TX Master: #ifconfig | grep -A2 carp carp0: flags=49 mtu 1500 inet 10.1.1.3 netmask 0xff00 carp: MASTER vhid 1 advbase 1 advskew 10 carp1: flags=49 mtu 1500 inet 10.1.2.3 netmask 0xff00 carp: MASTER vhid 2 advbase 1 advskew 10 carp2: flags=49 mtu 1500 inet 10.1.3.3 netmask 0xff00 carp: MASTER vhid 3 advbase 1 advskew 10 carp3: flags=49 mtu 1500 inet 10.1.4.3 netmask 0xfff8 carp: MASTER vhid 4 advbase 1 advskew 10 Backup #ifconfig |grep -A2 carp carp0: flags=49 mtu 1500 inet 10.1.1.3 netmask 0xff00 carp: BACKUP vhid 1 advbase 1 advskew 20 carp1: flags=49 mtu 1500 inet 1.1.2.3 netmask 0xff00 carp: BACKUP vhid 2 advbase 1 advskew 20 carp2: flags=49 mtu 1500 inet 10.1.3.3 netmask 0xff00 carp: BACKUP vhid 3 advbase 1 advskew 20 carp3: flags=49 mtu 1500 inet 10.1.4.3 netmask 0xfff8 carp: BACKUP vhid 4 advbase 1 advskew 20 Master: #netstat -ni |grep carp NameMtu Network Address Ipkts IerrsOpkts Oerrs Coll carp0 1500 311894 1 5926852 0 0 carp0 1500 10.1.110.1.1.3 42293866 - 263238 - - carp1 1500 48653 1 5663615 0 0 carp1 1500 10.1.210.1.2.3 153785957 -0 - - carp2 1500 48661 1 5663615 107 0 carp2 1500 10.1.3/24 10.1.3.3476782 -0 - - carp3 1500 48974 1 5663634 1155 0 carp3 1500 10.1.4.3/ 10.1.4.3 6885622 -0 - - Backup: #netstat -ni |grep carp NameMtu Network Address Ipkts IerrsOpkts Oerrs Coll carp0 1500 35221 0 6437 0 0 carp0 1500 10.1.110.1.1.3 8699 -0 - - carp1 1500 35220 0 6438 0 0 carp1 1500 10.1.210.1.2.3 86000 -0 - - carp2 1500 35221 0 6437 0 0 carp2 1500 10.1.3/24 10.1.3.3 0 -0 - - carp3 1500 35190 0 644323 0 carp3 1500 10.1.4.3/ 10.1.4.3 958 -0 - - Thanks in advance! -- Best regards, Eugene mailto:[EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
