[DRBD-user] switch was down, all drbd machines rebootet

[Heiko]

Hello,

I want to switch from one line to 2 lines. I have a dedicated line without
any switches now.
How do I have to change the heartbeat and drbd config to use both lines?
Can I just add the new IPs to the ha.cf? Hostname will be the same

#use_logd on
logfile /var/log/ha-log
debugfile /var/log/ha-debug
logfacility local0
keepalive 2
deadtime 10
warntime 3
initdead 20
udpport 694
ucast eth0 172.17.8.201 #old
ucast eth0 172.17.8.202 #old
ucast eth0 172.31.0.1 #new
ucast eth0 172.31.0.2 #new
node xen-a1
node xen-b1
auto_failback on


How do i have to change the drbd.conf, should I only use the dedicated LAN?
What happens when I only use the dedicated LAN an restart drbd/heartbeat,
will i
get a splitbrain because they see each other not during that restart?

resource bloon {
  protocol C;
  startup {
    degr-wfc-timeout 120;    # 2 minutes.
    degr-wfc-timeout 120; ## 2 minutes.
  }
  disk {
    on-io-error   detach;
  }
  net {
        after-sb-0pri disconnect;
        after-sb-1pri disconnect;
        after-sb-2pri disconnect;

#       allow-two-primaries;
        after-sb-0pri discard-zero-changes;
        after-sb-1pri discard-secondary;
        timeout 60;
#       connect-int 10;
#       ping-int 10;
#       max-buffers 2048;
#       max-epoch-size 2048;
  }
  syncer {
#    group 100;
    al-extents 257;
        rate 20M;
  }

  on xen-a1 {
    device    /dev/drbd0;
    disk      /dev/VolGroup00/lv_bloon;
    address   172.17.8.201:7788;

    meta-disk internal;
  }

  on xen-b1 {
    device    /dev/drbd0;
    disk      /dev/VolGroup00/lv_bloon;
    address   172.17.8.202:7788;
    meta-disk internal;
  }
}


greetings


.r

On Sat, Jul 4, 2009 at 3:58 AM, Scott Inderlied <scott at northwestcomputer.biz
> wrote:

>  ha.cf
>
> #use_logd on
> logfile /var/log/ha-log
> debugfile /var/log/ha-debug
> logfacility local0
> keepalive 2
> deadtime 10
> warntime 3
> initdead 20
> udpport 694
> ucast eth0 172.20.1.1
> ucast eth0 172.20.2.1
>
> # using different subnets won’t make any difference. Install another nicand use a crossover or us a serial cable. What you experienced is by design
> to prevent splitbrain
> node xen-A1.fra1.mailcluster
> node xen-B1.fra1.mailcluster
> auto_failback on
>
>
>
> *From:* drbd-user-bounces at lists.linbit.com [mailto:
> drbd-user-bounces at lists.linbit.com] *On Behalf Of *Heiko
> *Sent:* Friday, July 03, 2009 09:01
> *To:* drbd-user at lists.linbit.com
> *Subject:* [DRBD-user] switch was down, all drbd machines rebootet
>
>
>
> Hello,
>
>
> i had an earlier discussion here where we came to the conclusion that using
> Protocol C can cause crashes.
> Yesterday we had problems with one of our switches and therefore the drbd
> enabled machines couldnt see each other,
> than all the machines did reboots, created splitbrains and a lot of work.
> Do you think the crashes/reboots are caused by the same problem or can we
> prevent this behavouir by optimizing our
> heartbeat drbd config? Ill attach a drbd config and the ha.cf
>
> ---------------------------------
> drbd.conf
>
> common {
>   protocol C;
> }
>
>
>
> resource drbd_backend {
>   startup {
>     degr-wfc-timeout 120;    # 2 minutes.
>   }
>   disk {
>     on-io-error   detach;
>   }
>   net {
>   }
>   syncer {
>         rate 500M;
>         al-extents 257;
>   }
>
>   on xen-B1.fra1.mailcluster {
>     device    /dev/drbd0;
>     disk      /dev/md3;
>     address   172.20.2.1:7788;
>     meta-disk internal;
>   }
>   on xen-A1.fra1.mailcluster {
>     device    /dev/drbd0;
>     disk      /dev/md3;
>     address   172.20.1.1:7788;
>     meta-disk internal;
>   }
> }
>
> ---------------------------------------
> ha.cf
>
> #use_logd on
> logfile /var/log/ha-log
> debugfile /var/log/ha-debug
> logfacility local0
> keepalive 2
> deadtime 10
> warntime 3
> initdead 20
> udpport 694
> ucast eth0 172.20.1.1
> ucast eth0 172.20.2.1
> node xen-A1.fra1.mailcluster
> node xen-B1.fra1.mailcluster
> auto_failback on
>
>
>
> thnx a lot
>
>
> .r
>
> _______________________________________________
> drbd-user mailing list
> drbd-user at lists.linbit.com
> http://lists.linbit.com/mailman/listinfo/drbd-user
>
>
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