Pcsd-iscsi: Unterschied zwischen den Versionen
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Thomas (Diskussion | Beiträge) |
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+ | =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 | ||
+ | <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=== | ||
− | + | '''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 | |
− | |||
− | *pcs resource group add iscsi-group iscsi-ip iscsi-target | + | ==Resource für iscsi-ip einrichten und zu der Gruppe iscsi-group hinzufügen== |
+ | *pcs resource create iscsi-ip ocf:heartbeat:IPaddr2 ip=10.82.100.101 cidr_netmask=16 op monitor interval=30s --group iscsi-group | ||
+ | |||
+ | ==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 und zu der Gruppe iscsi-group hinzufügen== | ||
+ | *pcs resource create iscsi-target systemd:iscsitarget op monitor interval="30s" --force --group iscsi-group | ||
+ | |||
+ | =Abhängigkeiten und Reihenfolge anpassen= | ||
+ | *pcs constraint colocation add iscsi-drbd-clone with iscsi-group INFINITY | ||
+ | *pcs constraint order promote iscsi-drbd-clone then start iscsi-group 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: | ||
+ | promote iscsi-drbd-clone then start iscsi-group (kind:Mandatory) | ||
+ | Colocation Constraints: | ||
+ | iscsi-drbd-clone with iscsi-group (score:INFINITY) | ||
+ | </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 ] | ||
+ | Resource Group: iscsi-group | ||
+ | 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> |
Version vom 21. September 2017, 08:42 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 und zu der Gruppe iscsi-group hinzufügen
- pcs resource create iscsi-ip ocf:heartbeat:IPaddr2 ip=10.82.100.101 cidr_netmask=16 op monitor interval=30s --group iscsi-group
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 und zu der Gruppe iscsi-group hinzufügen
- pcs resource create iscsi-target systemd:iscsitarget op monitor interval="30s" --force --group iscsi-group
Abhängigkeiten und Reihenfolge anpassen
- pcs constraint colocation add iscsi-drbd-clone with iscsi-group INFINITY
- pcs constraint order promote iscsi-drbd-clone then start iscsi-group 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: promote iscsi-drbd-clone then start iscsi-group (kind:Mandatory) Colocation Constraints: iscsi-drbd-clone with iscsi-group (score:INFINITY)
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 ] Resource Group: iscsi-group 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