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iSCSI 配置存储服务器

网络上带有 iSCSI 的存储服务器称为 iSCSI Target，连接到 iSCSI Target 的 Client Host 称为 iSCSI Initiator。
此示例基于如下环境。
+------------------------+ | +------------------------+
| [iSCSI 目标] |10.0.0.30 | 10.0.0.51| [iSCSI 启动器] |
| dlp.srv.world +----------+----------+ node01.srv.world |
| | | |
+----------+ +----------+

[1] 安装管理工具

dnf -y install targetcli

 

[2] 配置 iSCSI 目标。
例如，在 [/var/lib/iscsi_disks] 目录下创建一个磁盘映像，并将其设置为 SCSI 设备。

# create a directory
[root@dlp ~]# mkdir /var/lib/iscsi_disks
# enter the admin console
[root@dlp ~]# targetcli
targetcli shell version 2.1.53
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.2021-03.world.srv:dlp.target01 
Created target iqn.2021-03.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.2021-03.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.2021-03.world.srv:node01.initiator01 
Created Node ACL for iqn.2021-03.world.srv:node01.initiator01
Created mapped LUN 0.
/iscsi/iqn.20...t01/tpg1/acls> cd iqn.2021-03.world.srv:node01.initiator01 

# set UserID and Password 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

[3] 如果 Firewalld 正在运行，则允许 iSCSI Target 服务

[root@dlp ~]# firewall-cmd --add-service=iscsi-target --permanent
success
[root@dlp ~]# firewall-cmd --reload
success
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