Estou usando o DRBD para replicação. Para fins de teste, estou usando 2 VMs. Eu observei que, se eu desconectar a interface de rede em um nó, ele se moverá para standalone e, depois de reconectar, ele não voltará para o modo de conexão conectado ou WF. Existe uma maneira de executar $drbdadm connect r0 ou equivalente usando o marcapasso?
minha configuração:
[root@CentOS1 ~]# cat /etc/drbd.d/nfs.res
resource r0 {
syncer {
c-plan-ahead 20;
c-fill-target 50k;
c-min-rate 25M;
al-extents 3833;
rate 90M;
}
disk {
no-md-flushes;
fencing resource-only;
}
handlers {
fence-peer "/usr/lib/drbd/crm-fence-peer.sh --timeout 120 --dc-timeout 120";
after-resync-target "/usr/lib/drbd/crm-unfence-peer.sh";
}
net {
sndbuf-size 0;
max-buffers 8000;
max-epoch-size 8000;
after-sb-0pri discard-least-changes;
after-sb-1pri consensus;
after-sb-2pri call-pri-lost-after-sb;
}
device /dev/drbd0;
disk /dev/centos/drbd;
meta-disk internal;
on CentOS1 {
address 172.25.1.11:7790;
}
on CentOS2 {
address 172.25.1.12:7790;
}
}
status do recurso depois de desconectar a rede e se reconectar:
[root@CentOS1 ~]#cat /proc/drbd
version: 8.4.10-1 (api:1/proto:86-101)
GIT-hash: a4d5de01fffd7e4cde48a080e2c686f9e8cebf4c build by mockbuild@, 2017-09-15 14:23:22
0: cs:StandAlone ro:Secondary/Unknown ds:UpToDate/Outdated r-----
ns:0 nr:0 dw:0 dr:2128 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
log:
[root@CentOS2 ~]# cat /dev/kmsg
6,1171,16427206172,-;e1000: enp0s9 NIC Link is Down
3,1172,16427206435,-;e1000 0000:00:09.0 enp0s9: Reset adapter
SUBSYSTEM=pci
DEVICE=+pci:0000:00:09.0
3,1173,16431488757,-;drbd r0: PingAck did not arrive in time.
6,1174,16431488808,-;drbd r0: peer( Secondary -> Unknown ) conn( Connected -> NetworkFailure ) pdsk( UpToDate -> DUnknown )
6,1175,16431489116,-;drbd r0: ack_receiver terminated
6,1176,16431489121,-;drbd r0: Terminating drbd_a_r0
6,1177,16431489277,-;block drbd0: new current UUID A5A2A33E423F0679:0F9B7A2A6938EE77:4471A80A92A109A4:4470A80A92A109A4
SUBSYSTEM=block
DEVICE=b147:0
6,1178,16431489574,-;drbd r0: Connection closed
6,1179,16431489660,-;drbd r0: conn( NetworkFailure -> Unconnected )
6,1180,16431489667,-;drbd r0: receiver terminated
6,1181,16431489669,-;drbd r0: Restarting receiver thread
6,1182,16431489671,-;drbd r0: receiver (re)started
6,1183,16431489712,-;drbd r0: conn( Unconnected -> WFConnection )
6,1184,16431489801,-;drbd r0: helper command: /sbin/drbdadm fence-peer r0
4,1185,16431673341,-;drbd r0: helper command: /sbin/drbdadm fence-peer r0 exit code 5 (0x500)
6,1186,16431673351,-;drbd r0: fence-peer helper returned 5 (peer is unreachable, assumed to be dead)
6,1187,16431673374,-;drbd r0: pdsk( DUnknown -> Outdated )
3,1188,16450060876,-;drbd r0: bind before connect failed, err = -99
6,1189,16450060962,-;drbd r0: conn( WFConnection -> Disconnecting )
4,1190,16461488768,-;drbd r0: Discarding network configuration.
6,1191,16461488824,-;drbd r0: Connection closed
6,1192,16461488855,-;drbd r0: conn( Disconnecting -> StandAlone )
6,1193,16461488860,-;drbd r0: receiver terminated
6,1194,16461488862,-;drbd r0: Terminating drbd_r_r0