iSCSI : Configure iSCSI Target (Targetcli)2019/05/10 |
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Configure Storage Server with iSCSI.
A storage on a network is called iSCSI Target, a Client which connects to iSCSI Target is called iSCSI Initiator.
This example is based on the environment below. +----------------------+ | +----------------------+ | [ iSCSI Target ] |10.0.0.30 | 10.0.0.31| [ iSCSI Initiator ] | | dlp.srv.world +----------+----------+ www.srv.world | | | | | +----------------------+ +----------------------+ |
| [1] | Install administration tools first. |
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[root@dlp ~]# dnf -y install targetcli
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| [2] | Configure iSCSI Target. For example, create an disk-image under the [/var/lib/iscsi_disks] directory and set it as a SCSI device. |
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# enter the admin console [root@dlp ~]# targetcli targetcli shell version 2.1.fb49 Copyright 2011-2013 by Datera, Inc and others. For help on commands, type 'help'. /> cd backstores/fileio # create a disk-image with the name [disk01] on [/var/lib/iscsi_disks/disk01.img] with 10G /backstores/fileio> create disk01 /var/lib/iscsi_disks/disk01.img 10G Created fileio disk01 with size 10737418240 /backstores/fileio> cd /iscsi # create a target # naming rule : [ iqn.(year)-(month).(reverse of domain name):(any name you like) ] /iscsi> create iqn.2019-05.world.srv:dlp.target01 Created target iqn.2019-05.world.srv:dlp.target01. Created TPG 1. Global pref auto_add_default_portal=true Created default portal listening on all IPs (0.0.0.0), port 3260. /iscsi> cd iqn.2019-05.world.srv:dlp.target01/tpg1/luns # set LUN /iscsi/iqn.20...t01/tpg1/luns> create /backstores/fileio/disk01 Created LUN 0. /iscsi/iqn.20...t01/tpg1/luns> cd ../acls # set ACL (it's the IQN of an initiator you permit to connect) /iscsi/iqn.20...t01/tpg1/acls> create iqn.2019-05.world.srv:www.initiator01 Created Node ACL for iqn.2019-05.world.srv:www.initiator01 Created mapped LUN 0. /iscsi/iqn.20...t01/tpg1/acls> cd iqn.2019-05.world.srv:www.initiator01 # set UserID for authentication /iscsi/iqn.20...w.initiator01> set auth userid=username Parameter userid is now 'username'. /iscsi/iqn.20...w.initiator01> set auth password=password Parameter password is now 'password'. /iscsi/iqn.20...w.initiator01> exit Global pref auto_save_on_exit=true Configuration saved to /etc/target/saveconfig.json # after configuration above, the target enters in listening like follows [root@dlp ~]# ss -napt | grep 3260 LISTEN 0 256 0.0.0.0:3260 0.0.0.0:*[root@dlp ~]# systemctl enable target
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| [3] | If Firewalld is running, allow iSCSI Target service. |
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[root@dlp ~]# firewall-cmd --add-service=iscsi-target --permanent success [root@dlp ~]# firewall-cmd --reload success |
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