Configure iSCSI Target (tgt)2017/12/18 |
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Configure Storage Server with iSCSI.
This is the example of configuring iSCSI Target with scsi-target-utils.
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| [1] | Install scsi-target-utils. |
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[root@dlp ~]# dnf -y install scsi-target-utils
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| [2] | Configure iSCSI Target. For example, create a disk image under the [/var/lib/iscsi_disks] directory and set it as a shared disk. |
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# create a disk image [root@dlp ~]# mkdir /var/lib/iscsi_disks [root@dlp ~]# dd if=/dev/zero of=/var/lib/iscsi_disks/disk01.img count=0 bs=1 seek=10G
[root@dlp ~]#
vi /etc/tgt/conf.d/target01.conf # create new # if you set some devices, add - and set the same way with follows # naming rule : [ iqn.yaer-month.domain:any name ]
<target iqn.2017-12.world.srv:target01>
# provided devicce as a iSCSI target
backing-store /var/lib/iscsi_disks/disk01.img
# iSCSI Initiator's IP address you allow to connect
initiator-address 10.0.0.31
# authentication info ( set anyone you like for "username", "password" )
incominguser username password
</target>
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| [3] | If SELinux is enabled, change SELinux Context. |
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[root@dlp ~]#
[root@dlp ~]# dnf -y install policycoreutils-python-utils
chcon -R -t tgtd_var_lib_t /var/lib/iscsi_disks [root@dlp ~]# semanage fcontext -a -t tgtd_var_lib_t /var/lib/iscsi_disks
[root@dlp ~]#
vi tgtd.te # create new
module tgtd 1.0;
require {
type tgtd_t;
type var_run_t;
class dir create;
}
#============= tgtd_t ==============
allow tgtd_t var_run_t:dir create;
checkmodule -m -M -o tgtd.mod tgtd.te [root@dlp ~]# semodule_package --outfile tgtd.pp --module tgtd.mod [root@dlp ~]# semodule -i tgtd.pp |
| [4] | 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 |
| [5] | Start tgtd and verify status. |
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[root@dlp ~]#
chmod 644 /usr/lib/systemd/system/tgtd.service [root@dlp ~]# systemctl start tgtd [root@dlp ~]# systemctl enable tgtd # show status [root@dlp ~]# tgtadm --mode target --op show
Target 1: iqn.2017-12.world.srv:target01
System information:
Driver: iscsi
State: ready
I_T nexus information:
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00010000
SCSI SN: beaf10
Size: 0 MB, Block size: 1
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
SWP: No
Thin-provisioning: No
Backing store type: null
Backing store path: None
Backing store flags:
LUN: 1
Type: disk
SCSI ID: IET 00010001
SCSI SN: beaf11
Size: 10737 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
SWP: No
Thin-provisioning: No
Backing store type: rdwr
Backing store path: /var/lib/iscsi_disks/disk01.img
Backing store flags:
Account information:
username
ACL information:
10.0.0.31
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