Byterfly Dev zone clusterbase
http://dev.digibess.it/
2026-06-18T05:59:16+00:00Byterfly Dev zone
http://dev.digibess.it/
http://dev.digibess.it/lib/tpl/drupal-garland-blue/images/favicon.icotext/html2012-05-01T16:44:18+00:00Anonymous (anonymous@undisclosed.example.com)clusterbase:blockd
http://dev.digibess.it/doku.php?id=clusterbase:blockd&rev=1335883458&do=diff
Cluster block diagram
----------
Cluster network configuration ⇒
⇑ HA Storage: open-source cluster active/passivetext/html2012-05-01T16:52:49+00:00Anonymous (anonymous@undisclosed.example.com)clusterbase:corosync
http://dev.digibess.it/doku.php?id=clusterbase:corosync&rev=1335883969&do=diff
Corosync
/etc/corosync/corosync.conf
totem {
version: 2
[...]
# This specifies the mode of redundant ring, which may be none, active, or passive.
rrp_mode: active
interface {
# The following values need to be set based on your environment
ringnumber: 0
bindnetaddr: 192.168.168.0
mcastaddr: 226.94.1.10
mcastport: 5405
}
interface {
# The following values need to be set based on your environment
ringnumber: 1
bindneta…text/html2012-05-01T16:52:08+00:00Anonymous (anonymous@undisclosed.example.com)clusterbase:drbddisk
http://dev.digibess.it/doku.php?id=clusterbase:drbddisk&rev=1335883928&do=diff
DRBD disk configuration
/etc/drbd.d/disk0.res
resource disk0 {
protocol C;
disk {
on-io-error detach;
fencing resource-only;
}
handlers {
fence-peer "/usr/lib/drbd/crm-fence-peer.sh";
after-resync-target "/usr/lib/drbd/crm-unfence-peer.sh";
}
net {
cram-hmac-alg sha1;
shared-secret "****************";
}
syncer {
rate 200M;
verify-alg sha1…text/html2012-05-01T16:51:24+00:00Anonymous (anonymous@undisclosed.example.com)clusterbase:drbdgen
http://dev.digibess.it/doku.php?id=clusterbase:drbdgen&rev=1335883884&do=diff
DRBD common configuration
/etc/drbd.d/global_common.conf
global {
usage-count yes;
}
common {
protocol C;
handlers {
pri-on-incon-degr "/usr/lib/drbd/notify-pri-on-incon-degr.sh; /usr/lib/drbd/notify-emergency-reboot.sh;
echo b > /proc/sysrq-trigger ; reboot -f";
#This handler is called if the node is primary, degraded and if the local copy of the data is inconsistent.
pri-lost-after-sb "/usr/lib/drbd/…text/html2012-05-01T16:54:14+00:00Anonymous (anonymous@undisclosed.example.com)clusterbase:iscsi
http://dev.digibess.it/doku.php?id=clusterbase:iscsi&rev=1335884054&do=diff
iSCSI configuration
/etc/init.d/iscsitarget
#!/bin/sh
#
[...]
start-stop-daemon --start --exec $DAEMON --quiet --oknodo -- -a 10.10.10.5
[...]
/etc/ietd.conf
Target iqn.AAAA-MM.cnr.to:storage.disco.U1.2tera
IncomingUser utente password
Lun 0 Path=/dev/VG/LV0,Type=blockio,ScsiId=CNRTO123456,ScsiSN=12345678,IOMode=wt
MaxConnections 1
InitialR2T Yes
ImmediateData No
MaxRecvDataSegmentLength 131072
MaxXmitDataSegmentLength 131072
MaxBurstLength 262144
…text/html2012-05-01T16:46:00+00:00Anonymous (anonymous@undisclosed.example.com)clusterbase:network
http://dev.digibess.it/doku.php?id=clusterbase:network&rev=1335883560&do=diff
Cluster network configuration
/etc/network/interfaces
[...]
auto bond0
iface bond0 inet static
address 192.168.1.1
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
bond-slaves none
bond-mode 0
bond-miimon 100
auto eth4
iface eth4 inet manual
bond-master bond0
auto eth5
iface eth5 inet manual
bond-master bond0
[...]text/html2012-05-01T16:53:31+00:00Anonymous (anonymous@undisclosed.example.com)clusterbase:pacemaker
http://dev.digibess.it/doku.php?id=clusterbase:pacemaker&rev=1335884011&do=diff
Pacemaker
root@nodo2:~# crm configure show
node uclu1 attributes standby="off"
node uclu2 attributes standby="off"
primitive IpA ocf:heartbeat:IPaddr2 \
params ip="10.10.10.5" cidr_netmask="24" nic="eth1" \
op monitor interval="5s"
primitive IpArp ocf:heartbeat:SendArp \
params ip="10.10.10.5" nic="eth1"
primitive Lvm ocf:heartbeat:LVM \
params volgrpname="replica0"
primitive drbd-disk0 ocf:linbit:drbd \
params drbd_resource="disk0" \
op monitor interval="…text/html2012-04-30T22:27:50+00:00Anonymous (anonymous@undisclosed.example.com)clusterbase:start
http://dev.digibess.it/doku.php?id=clusterbase:start&rev=1335817670&do=diff
HA Storage: open-source cluster active/passive
“Storage in HA: cluster attivo/passivo open source.”, G.Birello, I.Fucile, V.Giovanetti, A.Perin
Rapporto Tecnico N.37, giugno 2011, Ceris-CNR
Full-text (PDF)
ABSTRACT:
Ceris-CNR IT Office manages the CNR Piedmont network infrastructure and provides
network services for about 420 users.
The development of a large and reliable storage system is the answer to two needs: one from users,
who must deal with ever more larger digital objects for pe…