在现代数据中心中，数据存储和访问的速度至关重要，为了提高性能和可扩展性，许多组织转向使用ISCSI（Internet Small Computer System Interface）技术来连接和管理存储设备，本文将为您提供一个详细的步骤指南，帮助您搭建一个基本的ISCSI存储服务器。

1. 准备环境

确保您已经拥有以下硬件和软件：

服务器：至少需要一台具有网络接口的服务器，推荐使用性能较好的企业级服务器。

存储设备：可以是内部硬盘阵列、外部硬盘或网络附加存储（NAS），确保存储设备支持ISCSI协议。

网络交换机：用于连接服务器和存储设备，支持IP路由功能。

操作系统：服务器上需要安装支持ISCSI的操作系统，如Windows Server、Linux等。

管理工具：如iSCSI发起器（initiator）软件，用于配置和管理ISCSI会话。

2. 配置IP地址

为服务器和存储设备分配静态IP地址，确保它们在同一子网内，并且能够互相通信。

- 服务器IP: 192.168.1.2/24

- 存储设备IP: 192.168.1.3/24

3. 安装和配置操作系统

以Linux为例，安装操作系统并配置网络设置：

sudo apt-get update && apt-get install iscsi-initiator-utils -y

编辑/etc/network/interfaces文件，添加以下内容：

auto lo
iface lo inet loopback
iface eth0 inet static
    address 192.168.1.2/24
    netmask 255.255.255.0
    gateway 192.168.1.1
    dns-nameservers 8.8.8.8 8.8.4.4

重启网络服务：

sudo systemctl restart network

4. 安装和配置iSCSI发起器软件

安装iSCSI发起器软件，如CephFS或Lioncell iSCSI Initiator，以Lioncell为例：

sudo apt-get install lsiscsidevtool -y

编辑/etc/lsiscsid/initiatortab文件，添加以下内容：

target: 192.168.1.3,ipaddr: 192.168.1.3,lun: iscsid0,targetportal: 3700,transport: tcp:3700,rw:yes,multichannel: yes,sessiontimeout: 300,reconnectinterval: 60,reconnectcount: 3,maxconnectionspertarget: 1,maxconnectionstotal: 4,maxsessionspertarget: 8,maxsessionstotal: 8,maxtargetspersession: 4,maxtargetstotal: 8,minlogininterval: 60,maxlogininterval: 3600,loginretries: 3,loginfailurecount: 3,loginfailureinterval: 60,loginfailuretimeout: 600,logintimeout: 600,loginretriesinprogress: 3,logintimeoutinprogress: 600,loginretriesonretry: 3,logintimeoutonretry: 600,loginretriesafterreboot: 3,logintimeoutafterreboot: 600,loginretriesaftercrash: 3,logintimeoutaftercrash: 600,loginretriesafterpoweroff: 3,logintimeoutafterpoweroff: 600,loginretriesaftersuspend: 3,logintimeoutaftersuspend: 600,loginretriesafterresume: 3,logintimeoutafterresume: 600,loginretriesafterreset: 3,logintimeoutafterreset: 600,loginretriesafterrestore: 3,logintimeoutafterrestore: 600,loginretriesafterupgrade: 3,logintimeoutafterupgrade: 600,loginretriesaftercleanup: 3,logintimeoutaftercleanup: 600,loginretriesaftersnapshotcreate: 3,logintimeoutaftersnapshotcreate: 600,loginretriesaftersnapshotremove: 3,logintimeoutaftersnapshotremove: 600,loginretriesaftersnapshotresize: 3,logintimeoutaftersnapshotresize: 600,authmethods: password,authuserdatapath: /var/lib/lsiscsid/passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_passworddb_lcl_initiator_lcl_initiatortab_{{targetname}}_{{username}}_{{password}}},authoptions: default,authtype: password,encryptionmethods: none,keymanagementmethods: none

编辑/etc/default/lsiscsid文件，添加以下内容：

INITIATOR=yes
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