Pcsd-iscsi: Unterschied zwischen den Versionen

Aus Xinux Wiki
Zur Navigation springen Zur Suche springen
 
(5 dazwischenliegende Versionen desselben Benutzers werden nicht angezeigt)
Zeile 1: Zeile 1:
 +
=Vorraussetzungen=
 +
*Eingerichteter HA-Cluster
 +
*Partitionierte Festplatte
  
−
*pcs -f iscsi_cfg resource create iscsi-drbd ocf:linbit:drbd drbd_resource=iscsi op monitor interval=60s
+
=DRBD erstellen=
 +
*apt-get install drbd8-utils
  
−
*pcs -f iscsi_cfg resource  master iscsi-drbd-clone iscsi-drbd master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true
+
==DRBD konfigurieren==
 +
'''Die folgenden Anweißungen müssen auf beiden Nodes ausgeführt werden'''
 +
*vi /etc/drbd.d/iscsi.res
 +
<source lang=bash>
 +
resource iscsi {
 +
protocol C;
 +
  meta-disk internal;
 +
device /dev/drbd2;
 +
syncer {
 +
  verify-alg sha1;
 +
  }
 +
net {
 +
  allow-two-primaries;
 +
}
 +
on mabel.xinux.lan {
 +
  disk  /dev/sda2;
 +
  address  198.19.250.1:7702;
 +
}
 +
on ryzen.xinux.lan {
 +
  disk  /dev/sda2;
 +
  address  198.19.250.2:7702;
 +
}
 +
}
 +
</source>
 +
===drbd-laufwerk erstellen===
 +
*drbdadm create-md iscsi
 +
<source lang=bash>
 +
initializing activity log
 +
NOT initializing bitmap
 +
Writing meta data...
 +
New drbd meta data block successfully created.
 +
</source>
 +
===drbd-Laufwerk hochfahren===
 +
*modprobe drbd
 +
*drbdadm up iscsi
  
 +
===Diesen Rechner als primär verwenden===
  
−
*pcs resource create iscsi-ip ocf:heartbeat:IPaddr2 ip=10.82.10.201 cidr_netmask=16 op monitor interval=30s
+
'''Die folgenden Befehle müssen nur auf der Node ausgeführt werden, die später die primäre Node sein soll'''
  
 +
*drbdadm primary --force iscsi
  
−
*cat /etc/iet/ietd.conf
+
===Dateisystem erstellen===
−
Target iqn.2025-12.lan.xinux.mabel:storage-drbd2
+
*mkfs.ext4 /dev/drbd2
−
  Lun 0 Path=/dev/drbd2,Type=block
 
  
 +
==Resourcen anlegen==
 +
===in der Datei drbd_cfg zwischenspeichern===
 +
*pcs cluster cib drbd_cfg
 +
===Die Resource für das Master/Slave-Setup erstellen===
 +
*pcs -f drbd_cfg resource create iscsi-drbd ocf:linbit:drbd drbd_resource=iscsi op monitor interval=60s
 +
*pcs -f drbd_cfg resource  master iscsi-drbd-clone  iscsi-drbd master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true
 +
===Aus der Datei drbd_cfg in cib übernehmen===
 +
*pcs cluster cib-push drbd_cfg
  
−
*cat /etc/default/iscsitarget
+
=iscsi einrichten=
−
ISCSITARGET_ENABLE=true
+
==Install iscsi==
−
ISCSITARGET_MAX_SLEEP=3
+
*apt-get install iscsitarget iscsitarget-dkms
−
ISCSITARGET_OPTIONS="--address=10.82.10.201"
 
  
−
*pcs resource group add iscsi-group iscsi-ip iscsi-target
+
==Resource für iscsi-ip einrichten==
 +
*pcs resource create iscsi-ip ocf:heartbeat:IPaddr2 ip=10.82.100.101 cidr_netmask=16 op monitor interval=30s
 +
 
 +
==iscsitarget einrichten==
 +
*vi /etc/default/iscsitarget
 +
<pre>
 +
ISCSITARGET_ENABLE=true
 +
ISCSITARGET_MAX_SLEEP=3
 +
ISCSITARGET_OPTIONS="--address=10.82.100.101"
 +
</pre>
 +
 
 +
==ietd einrichten==
 +
*vi /etc/iet/ietd.conf
 +
<pre>
 +
Target iqn.2025-12.lan.xinux.mabel:storage-drbd2
 +
Lun 0 Path=/dev/drbd2,Type=block
 +
</pre>
 +
 
 +
==Resource für iscsitarget erstellen==
 +
*pcs resource create iscsi-target  systemd:iscsitarget op monitor interval="30s" --force
 +
 
 +
=Abhängigkeiten und Reihenfolge anpassen=
 +
*pcs constraint colocation add iscsi-ip with master iscsi-drbd-clone INFINITY
 +
*pcs constraint colocation add iscsi-target with master iscsi-drbd-clone  INFINITY
 +
*pcs constraint order promote iscsi-drbd-clone then start iscsi-ip  INFINITY
 +
*pcs constraint order start iscsi-ip then start iscsi-target  INFINITY
 +
*pcs constraint show
 +
<pre>
 +
Location Constraints:
 +
  Resource: iscsi-drbd-clone
 +
    Enabled on: mabel (score:INFINITY)
 +
    Enabled on: ryzen (score:INFINITY)
 +
  Resource: iscsi-group
 +
    Enabled on: ryzen (score:INFINITY)
 +
  Resource: iscsi-ip
 +
    Enabled on: mabel (score:INFINITY) (role: Started)
 +
Ordering Constraints:
 +
  start iscsi-ip then start iscsi-target (kind:Mandatory)
 +
  promote iscsi-drbd-clone then start iscsi-ip (kind:Mandatory)
 +
Colocation Constraints:
 +
  iscsi-ip with iscsi-drbd-clone(score:INFINITY)
 +
  iscsi-target with iscsi-drbd-clone (score:INFINITY) (with-rsc-role:Master)
 +
</pre>
 +
 
 +
=Ergebnis=
 +
<pre>
 +
Cluster name: kvm-cluster
 +
Last updated: Thu Sep 21 10:40:59 2017 Last change: Thu Sep 21 10:38:57 2017 by root via cibadmin on mabel
 +
Stack: corosync
 +
Current DC: ryzen (version 1.1.14-70404b0) - partition with quorum
 +
2 nodes and 9 resources configured
 +
 
 +
Online: [ mabel ryzen ]
 +
 
 +
Full list of resources:
 +
 
 +
Master/Slave Set: iscsi-drbd-clone [iscsi-drbd]
 +
    Masters: [ mabel ]
 +
    Slaves: [ ryzen ]
 +
iscsi-ip (ocf::heartbeat:IPaddr2): Started mabel
 +
iscsi-target (systemd:iscsitarget): Started mabel
 +
 
 +
PCSD Status:
 +
  mabel: Online
 +
  ryzen: Online
 +
 
 +
Daemon Status:
 +
  corosync: active/disabled
 +
  pacemaker: active/enabled
 +
  pcsd: active/enabled
 +
</pre>

Aktuelle Version vom 25. September 2017, 13:38 Uhr

Vorraussetzungen

  • Eingerichteter HA-Cluster
  • Partitionierte Festplatte

DRBD erstellen

  • apt-get install drbd8-utils

DRBD konfigurieren

Die folgenden Anweißungen müssen auf beiden Nodes ausgeführt werden

  • vi /etc/drbd.d/iscsi.res
resource iscsi {
 protocol C;
 meta-disk internal;
 device /dev/drbd2;
 syncer {
  verify-alg sha1;
 }
 net {
  allow-two-primaries;
 }
 on mabel.xinux.lan {
  disk   /dev/sda2;
  address  198.19.250.1:7702;
 }
 on ryzen.xinux.lan {
  disk   /dev/sda2;
  address  198.19.250.2:7702;
 }
}

drbd-laufwerk erstellen

  • drbdadm create-md iscsi
initializing activity log
NOT initializing bitmap
Writing meta data...
New drbd meta data block successfully created.

drbd-Laufwerk hochfahren

  • modprobe drbd
  • drbdadm up iscsi

Diesen Rechner als primär verwenden

Die folgenden Befehle müssen nur auf der Node ausgeführt werden, die später die primäre Node sein soll

  • drbdadm primary --force iscsi

Dateisystem erstellen

  • mkfs.ext4 /dev/drbd2

Resourcen anlegen

in der Datei drbd_cfg zwischenspeichern

  • pcs cluster cib drbd_cfg

Die Resource für das Master/Slave-Setup erstellen

  • pcs -f drbd_cfg resource create iscsi-drbd ocf:linbit:drbd drbd_resource=iscsi op monitor interval=60s
  • pcs -f drbd_cfg resource master iscsi-drbd-clone iscsi-drbd master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true

Aus der Datei drbd_cfg in cib übernehmen

  • pcs cluster cib-push drbd_cfg

iscsi einrichten

Install iscsi

  • apt-get install iscsitarget iscsitarget-dkms

Resource für iscsi-ip einrichten

  • pcs resource create iscsi-ip ocf:heartbeat:IPaddr2 ip=10.82.100.101 cidr_netmask=16 op monitor interval=30s

iscsitarget einrichten

  • vi /etc/default/iscsitarget
ISCSITARGET_ENABLE=true
ISCSITARGET_MAX_SLEEP=3
ISCSITARGET_OPTIONS="--address=10.82.100.101"

ietd einrichten

  • vi /etc/iet/ietd.conf
Target iqn.2025-12.lan.xinux.mabel:storage-drbd2
Lun 0 Path=/dev/drbd2,Type=block

Resource für iscsitarget erstellen

  • pcs resource create iscsi-target systemd:iscsitarget op monitor interval="30s" --force

Abhängigkeiten und Reihenfolge anpassen

  • pcs constraint colocation add iscsi-ip with master iscsi-drbd-clone INFINITY
  • pcs constraint colocation add iscsi-target with master iscsi-drbd-clone INFINITY
  • pcs constraint order promote iscsi-drbd-clone then start iscsi-ip INFINITY
  • pcs constraint order start iscsi-ip then start iscsi-target INFINITY
  • pcs constraint show
Location Constraints:
  Resource: iscsi-drbd-clone
    Enabled on: mabel (score:INFINITY)
    Enabled on: ryzen (score:INFINITY)
  Resource: iscsi-group
    Enabled on: ryzen (score:INFINITY)
  Resource: iscsi-ip
    Enabled on: mabel (score:INFINITY) (role: Started)
Ordering Constraints:
  start iscsi-ip then start iscsi-target (kind:Mandatory)
  promote iscsi-drbd-clone then start iscsi-ip (kind:Mandatory)
Colocation Constraints:
  iscsi-ip with iscsi-drbd-clone(score:INFINITY)
  iscsi-target with iscsi-drbd-clone (score:INFINITY) (with-rsc-role:Master)

Ergebnis

Cluster name: kvm-cluster
Last updated: Thu Sep 21 10:40:59 2017		Last change: Thu Sep 21 10:38:57 2017 by root via cibadmin on mabel
Stack: corosync
Current DC: ryzen (version 1.1.14-70404b0) - partition with quorum
2 nodes and 9 resources configured

Online: [ mabel ryzen ]

Full list of resources:

 Master/Slave Set: iscsi-drbd-clone [iscsi-drbd]
     Masters: [ mabel ]
     Slaves: [ ryzen ]
 iscsi-ip	(ocf::heartbeat:IPaddr2):	Started mabel
 iscsi-target	(systemd:iscsitarget):	Started mabel

PCSD Status:
  mabel: Online
  ryzen: Online

Daemon Status:
  corosync: active/disabled
  pacemaker: active/enabled
  pcsd: active/enabled
Abgerufen von „http://wiki.ixheim.de/index.php?title=Pcsd-iscsi&oldid=13959“