RHEL7部署ISCSI SERVER

RHEL7部署ISCSI SERVER，作为共享存储使用。

装包（yum源已提前配置好）

[root@host1 ~]# yum install targetcli -y

新建分区（新建/dev/sdb1分区，大小为10G）

[root@host1 ~]# fdisk /dev/sdb

Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them.

Be careful before using the write command.

Device does not contain a recognized partition table

Building a new DOS disklabel with disk identifier 0xb1af1bb0.

Command (m for help): n

Partition type:

   p   primary (0 primary, 0 extended, 4 free)

   e   extended

Select (default p): p

Partition number (1-4, default 1): 1

First sector (2048-209715199, default 2048):

Using default value 2048

Last sector, +sectors or +size{K,M,G} (2048-209715199, default 209715199): +10G

Partition 1 of type Linux and of size 10 GiB is set

Command (m for help): W

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

创建block设备

[root@host1 ~]# targetcli

/> cd backstores/block

/backstores/block> create iscsidisk1 /dev/sdb1

Created block storage object iscsidisk1 using /dev/sdb1.

配置iqn

/backstores/block> cd /

/> cd iscsi/

/iscsi> create ***.***.ntae007:disk1

Created target ***.***.ntae007:disk1.

配置acl

配置允许哪些initiator端访问，本例允许2个节点的访问。

/iscsi> cd ***.***.ntae007:disk1/tpg1/acls

/iscsi/iqn.20...sk1/tpg1/acls> create ***.***.ntae007:cvk01

Created Node ACL for ***.***.ntae007:cvk01

/iscsi/iqn.20...sk1/tpg1/acls> create ***.***.ntae007:cvk02

Created Node ACL for ***.***.ntae007:cvk02

配置lun

/iscsi/iqn.20...sk1/tpg1/acls> cd /

/> cd iscsi/***.***.ntae007:disk1/tpg1/luns

/iscsi/iqn.20...sk1/tpg1/luns> create /backstores/block/iscsidisk1

Created LUN 0.

Created LUN 0->0 mapping in node ACL ***.***.ntae007:cvk02

Created LUN 0->0 mapping in node ACL ***.***.ntae007:cvk01

配置portal（先删除0.0.0.0，使其只在指定地址192.168.1.12监听3260端口）

/iscsi/iqn.20...sk1/tpg1/luns>cd /

/> cd /iscsi/***.***.ntae007:disk1/tpg1/portals/

/iscsi/iqn.20.../tpg1/portals> delete 0.0.0.0 3260

Deleted network portal 0.0.0.0:3260

/iscsi/iqn.20.../tpg1/portals> create 192.168.1.12 3260

Using default IP port 3260

Created network portal 192.168.1.12:3260.

保存配置

/iscsi/iqn.20.../tpg1/portals> cd /

/> saveconfig

/> exit

启动服务

[root@host1 ~]# systemctl start target

[root@host1 ~]# systemctl enable target

打开防火墙

[root@host1 ~]# firewall-cmd --permanent --add-service=mysql

[root@host1 ~]# firewall-cmd --reload

检查服务

[root@host1 ~]# netstat -antup | grep 3260

tcp        0      0 192.168.1.12:3260       0.0.0.0:*               LISTEN      -

1、  只有ACL允许的启动器***.***.ntae007:cvk01和***.***.ntae007:cvk02才能连接iscsi存储。

2、  默认情况下，防火墙不允许3260端口通过，需要手动打开3260端口。