ISCSI网络磁盘 默认端口：3260
服务端：
一.
二.安装软件：targetcli
用命令targetcli进行配置------------------------进入iscsi磁盘配置模式
1.建立backstore后端存储
>>> backstores/block create name=nsd dev=/dev/vdb1
>>> ls
2.建立target磁盘组(iqn.yyyy-mm.倒叙域名：自定义标示）
>>> iscsi/ create iqn.2018-11.com.example:server0
>>> ls
3.配置lun关联
>>> iscsi/iqn.2018-11.com.example:server0/tpg1/luns create /backstores/block/nsd
>>> ls
4.配置访问控制:设置客户端声称的名字
>>> iscsi/iqn.2018-11.com.example:server0/tpg1/acls create iqn.2018-11.com.example:desktop0
5.启用ip地址与端口
>>> iscsi/iqn.2018-11.com.example.server0/tpg1/portals create 172.25.0.11
三.重启服务：
systemctl restart target
systemctl enable target
yum -y install targetcli
[root@server0 ~]# targetcli Warning: Could not load preferences file /root/.targetcli/prefs.bin. targetcli shell version 2.1.fb34 Copyright 2011-2013 by Datera, Inc and others. For help on commands, type 'help'. /> ls o- / ..................................................................... [...] o- backstores .......................................................... [...] | o- block .............................................. [Storage Objects: 0] | o- fileio ............................................. [Storage Objects: 0] | o- pscsi .............................................. [Storage Objects: 0] | o- ramdisk ............................................ [Storage Objects: 0] o- iscsi ........................................................ [Targets: 0] o- loopback ..................................................... [Targets: 0] /> backstores/block create name=nsd dev=/dev/vdb1 Created block storage object nsd using /dev/vdb1. /> iscsi/ create iqn.2018-11.com.example:server0 Created target iqn.2018-11.com.example:server0. Created TPG 1. /> iscsi/iqn.2018-11.com.example:server0/tpg1/luns create /backstores/block/nsd Created LUN 0. /> iscsi/iqn.2018-11.com.example:server0/tpg1/acls create iqn.2018-11.com.example:desktop0 Created Node ACL for iqn.2018-11.com.example:desktop0 Created mapped LUN 0. /> iscsi/iqn.2018-11.com.example:server0/tpg1/portals create 172.25.0.11 Using default IP port 3260 Created network portal 172.25.0.11:3260. />
[root@server0 ~]# systemctl restart target
[root@server0 ~]# systemctl enable target客户端：
1.安装iscsi-initiator-utils,访问共享存储服务
2.配合客户端声称的名字 /etc/iscsi/initiatorname.iscsi
initiatorName=iqn.2018-11.com.example:desktop0
vim /etc/iscsi/initiatorname.iscsi InitiatorName=iqn.2018-11.com.example:desktop0
3.重启服务，刷新客户端声称的名字
systemctl restart iscsid
systemctl restart iscsid
4.运行命令，发现共享存储
iscsiadm --mode discoverydb --type sendtargets --portal 172.25.0.11 --discover
5.重启服务iscsi服务，使用共享存储
systemctl restart iscsi
systemctl enable iscsi
lsblk