insyte at gmail
Sep 28, 2009, 5:55 PM
Post #1 of 2
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"fence-peer helper broken, returned 1"
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I've implemented a simple two-node DRBD cluster with Heartbeat v1. I
have a single back-end ethernet link for both DRBD replication and
heartbeat traffic. I realize this is not a stable configuration.
If I kill the ethernet link between the two nodes, drbd does not fail
over, logging these errors:
Sep 28 19:19:55 test01 kernel: block drbd0: helper command:
/sbin/drbdadm fence-peer minor-0
Sep 28 19:19:55 test01 kernel: block drbd0: helper command:
/sbin/drbdadm fence-peer minor-0 exit code 1 (0x100)
Sep 28 19:19:55 test01 kernel: block drbd0: fence-peer helper broken, returned 1
Sep 28 19:19:55 test01 kernel: block drbd0: Considering state change
from bad state. Error would be: 'Refusing to be Primary while peer is
not outdated'
Is this caused by the lack of a secondary communications mechanism for
Heartbeat to convey the 'fence-peer' command to the second node? If
so, how does heartbeat/drbd handle a node that fails suddenly and
catastrophically, before the 'fence-peer' command can be conveyed?
Thanks!
-Ben
ha.cf contains these lines:
respawn hacluster /usr/lib64/heartbeat/dopd
apiauth dopd gid=haclient uid=hacluster
drbd.conf:
global {
usage-count no;
}
common {
syncer { rate 10M; }
}
resource ha_disk {
protocol C;
handlers {
pri-on-incon-degr "echo o > /proc/sysrq-trigger ; halt -f";
pri-lost-after-sb "echo o > /proc/sysrq-trigger ; halt -f";
local-io-error "echo o > /proc/sysrq-trigger ; halt -f";
outdate-peer "/usr/lib64/heartbeat/drbd-peer-outdater -t 5";
}
startup {
degr-wfc-timeout 120; # 2 minutes.
}
disk {
on-io-error detach;
fencing resource-only;
}
net {
cram-hmac-alg "sha1";
shared-secret "eea0a7bfc04b965b9beb5ba37096bc7a";
after-sb-0pri discard-older-primary;
after-sb-1pri consensus;
after-sb-2pri disconnect;
rr-conflict disconnect;
}
syncer {
rate 10M;
al-extents 257;
}
on test01 {
device /dev/drbd0;
disk /dev/vg0/drbd-disk;
address 10.1.1.210:7788;
flexible-meta-disk internal;
}
on test02 {
device /dev/drbd0;
disk /dev/vg0/drbd-disk;
address 10.1.1.211:7788;
flexible-meta-disk internal;
}
}
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