linux配置ISCSI服务器的方法
<p><strong>一.在linux下安装启动iscsi target</strong></p><p><strong>1.安装启动iscsi服务</strong><br /># yum -y install targetcli.noarch</p>
<p><strong>2.建立一个目录设置为iscsi设备</strong><br /># mkdir /iscsi_disks</p>
<p><strong>3.设置target </strong></p>
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<div class="alt1 index39 line number40">40</div></td><td><div class="container"><div class="alt2 index0 line number1"><code># targetcli</code></div>
<div class="alt1 index1 line number2"><code>Warning: Could not load preferences file /root/.targetcli/prefs.bin.</code></div>
<div class="alt2 index2 line number3"><code>targetcli shell version 2.1.fb41</code></div>
<div class="alt1 index3 line number4"><code>Copyright 2011-2013 by Datera, Inc and others.</code></div>
<div class="alt2 index4 line number5"><code>For help on commands, type 'help'.</code></div>
<div class="alt1 index5 line number6"><code> </code></div>
<div class="alt2 index6 line number7"><code>/> cd backstores/fileio</code></div>
<div class="alt1 index7 line number8"><code>/backstores/fileio> create disk01 /iscsi_disks/disk01.img 20G</code></div>
<div class="alt2 index8 line number9"><code>Created fileio disk01 with size 21474836480</code></div>
<div class="alt1 index9 line number10"><code>/backstores/fileio> cd /iscsi</code></div>
<div class="alt2 index10 line number11"><code>/iscsi> create iqn.2016-06.wjb.com:storage.target0</code></div>
<div class="alt1 index11 line number12"><code>Created target iqn.2016-06.wjb.com:storage.target0.</code></div>
<div class="alt2 index12 line number13"><code>Created TPG 1.</code></div>
<div class="alt1 index13 line number14"><code>Global pref auto_add_default_portal=true</code></div>
<div class="alt2 index14 line number15"><code>Created default portal listening on all IPs (0.0.0.0), port 3260.</code></div>
<div class="alt1 index15 line number16"><code>/iscsi> cd iqn.2016-06.wjb.com:storage.target0/tpg1/portals/</code></div>
<div class="alt2 index16 line number17"><code>/iscsi/iqn.20.../tpg1/portals> create 192.168.1.50</code></div>
<div class="alt1 index17 line number18"><code>Using default IP port 3260</code></div>
<div class="alt2 index18 line number19"><code>Could not create NetworkPortal in configFS</code></div>
<div class="alt1 index19 line number20"><code>/iscsi/iqn.20.../tpg1/portals> delete 0.0.0.0 3260</code></div>
<div class="alt2 index20 line number21"><code>Deleted network portal 0.0.0.0:3260</code></div>
<div class="alt1 index21 line number22"><code>/iscsi/iqn.20.../tpg1/portals> create 192.168.1.50</code></div>
<div class="alt2 index22 line number23"><code>Using default IP port 3260</code></div>
<div class="alt1 index23 line number24"><code>Created network portal 192.168.1.50:3260.</code></div>
<div class="alt2 index24 line number25"><code>/iscsi/iqn.20.../tpg1/portals> cd ../luns</code></div>
<div class="alt1 index25 line number26"><code>/iscsi/iqn.20...et0/tpg1/luns> create /backstores/fileio/disk01</code></div>
<div class="alt2 index26 line number27"><code>Created LUN 0.</code></div>
<div class="alt1 index27 line number28"><code>/iscsi/iqn.20...et0/tpg1/luns> cd ../acls</code></div>
<div class="alt2 index28 line number29"><code>/iscsi/iqn.20...et0/tpg1/acls> create iqn.2016-06.wjb.com:www.server.com</code></div>
<div class="alt1 index29 line number30"><code>Created Node ACL for iqn.2016-06.wjb.com:www.server.com</code></div>
<div class="alt2 index30 line number31"><code>Created mapped LUN 0.</code></div>
<div class="alt1 index31 line number32"><code>/iscsi/iqn.20...et0/tpg1/acls> cd iqn.2016-06.wjb.com:www.server.com/</code></div>
<div class="alt2 index32 line number33"><code>/iscsi/iqn.20...ww.server.com> set auth userid=username</code></div>
<div class="alt1 index33 line number34"><code>Parameter userid is now 'username'.</code></div>
<div class="alt2 index34 line number35"><code>/iscsi/iqn.20...ww.server.com> set auth password=password</code></div>
<div class="alt1 index35 line number36"><code>Parameter password is now 'password'.</code></div>
<div class="alt2 index36 line number37"><code>/iscsi/iqn.20...ww.server.com> exit</code></div>
<div class="alt1 index37 line number38"><code>Global pref auto_save_on_exit=true</code></div>
<div class="alt2 index38 line number39"><code>Last 10 configs saved in /etc/target/backup.</code></div>
<div class="alt1 index39 line number40"><code>Configuration saved to /etc/target/saveconfig.json</code></div></div></td></tr></tbody></table></div></div></div>
<p><strong>4.设置防火墙</strong></p>
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<div class="alt2 index8 line number9">9</div></td><td><div class="container"><div class="alt2 index0 line number1"><code># vim /etc/firewalld/services/iscsi.xml</code></div>
<div class="alt1 index1 line number2"><code><!--?</code--><code>xml</code> <code>version</code><code>=</code><code>"1.0"</code> <code>encoding</code><code>=</code><code>"utf-8"</code><code>?></code> </code></div>
<div class="alt2 index2 line number3"><code><code><</code><code>service</code><code>></code> </code></div>
<div class="alt1 index3 line number4"><code><code><</code><code>short</code><code>>ISCSI<!--</code--><code>short</code><code>></code> </code></code></div>
<div class="alt2 index4 line number5"><code><code><code><</code><code>description</code><code>>ISCSI protocal<!--</code--><code>description</code><code>></code> </code></code></code></div>
<div class="alt1 index5 line number6"><code><code><code><code><</code><code>port</code> <code>protocal</code><code>=</code><code>"tcp"</code> <code>port</code><code>=</code><code>"3260"</code><code>></code> </code></code></code></div>
<div class="alt2 index6 line number7"><code><code><code><code><!--</code--><code>service</code><code>></code> </code></code></code></code></div>
<div class="alt1 index7 line number8"><code><code><code><code><code># firewall-cmd --permanent --add-service=iscsi</code> </code></code></code></code></div>
<div class="alt2 index8 line number9"><code><code><code><code><code># firewall-cmd --reload</code> </code></code></code></code></div></div></td></tr></tbody></table></div></div></div>
<p><strong>5.启动服务</strong></p>
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<div class="alt2 index2 line number3">3</div></td><td><div class="container"><div class="alt2 index0 line number1"><code># systemctl enable target.service</code></div>
<div class="alt1 index1 line number2"><code>Created symlink from /etc/systemd/system/multi-user.target.wants/target.service to /usr/lib/systemd/system/target.service.</code></div>
<div class="alt2 index2 line number3"><code># systemctl start target.service</code></div></div></td></tr></tbody></table></div></div></div>
<p><strong>6.查看端口</strong></p>
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<div class="alt1 index1 line number2">2</div></td><td><div class="container"><div class="alt2 index0 line number1"><code># netstat -lnp | grep 3260</code></div>
<div class="alt1 index1 line number2"><code>tcp 0 0 192.168.1.50:3260 0.0.0.0:* LISTEN -</code></div></div></td></tr></tbody></table></div></div></div>
<p><strong>二.在linux下安装启动iscsi initiator</strong></p>
<p><strong>1.安装 iscsi-initiator-utils服务</strong><br /># yum install iscsi-initiator-utils</p>
<p><strong>2.修改配置文件</strong></p>
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<div class="alt1 index5 line number6">6</div></td><td><div class="container"><div class="alt2 index0 line number1"><code># vim /etc/iscsi/initiatorname.iscsi </code></div>
<div class="alt1 index1 line number2"><code>InitiatorName=iqn.2016-06.wjb.com:www.server.com</code></div>
<div class="alt2 index2 line number3"><code># vim /etc/iscsi/iscsid.conf </code></div>
<div class="alt1 index3 line number4"><code>#node.session.auth.authmethod = CHAP</code></div>
<div class="alt2 index4 line number5"><code>#node.session.auth.username = username</code></div>
<div class="alt1 index5 line number6"><code>#node.session.auth.password = password //去掉注释</code></div></div></td></tr></tbody></table></div></div></div>
<p><strong>3.启动服务</strong></p>
<p># systemctl start iscsid<br /># systemctl enable iscsid</p>
<p><strong>4.发现target</strong></p>
<p># iscsiadm -m discovery -t sendtargets -p 192.168.1.50</p>
<p><strong>5.查看状态</strong></p>
<p># iscsiadm -m node -o show</p>
<p><strong>6.登录target建立连接</strong></p>
<p># iscsiadm -m node --login<br />Logging in to (multiple)<br />Login to successful.</p>
<p><strong>7.查看连接情况</strong></p>
<p># iscsiadm -m session -o show<br />tcp: 192.168.1.50:3260,1 iqn.2016-06.wjb.com:storage.target0 (non-flash)</p>
<p><strong>8.磁盘操作</strong></p>
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<div class="alt2 index48 line number49">49</div></td><td><div class="container"><div class="alt2 index0 line number1"><code># fdisk -l</code></div>
<div class="alt1 index1 line number2"><code> </code></div>
<div class="alt2 index2 line number3"><code>磁盘 /dev/sda：107.4 GB, 107374182400 字节，209715200 个扇区</code></div>
<div class="alt1 index3 line number4"><code>Units = 扇区 of 1 * 512 = 512 bytes</code></div>
<div class="alt2 index4 line number5"><code>扇区大小(逻辑/物理)：512 字节 / 512 字节</code></div>
<div class="alt1 index5 line number6"><code>I/O 大小(最小/最佳)：512 字节 / 512 字节</code></div>
<div class="alt2 index6 line number7"><code>磁盘标签类型：dos</code></div>
<div class="alt1 index7 line number8"><code>磁盘标识符：0x000b2ba1</code></div>
<div class="alt2 index8 line number9"><code> </code></div>
<div class="alt1 index9 line number10"><code> </code><code>设备 Boot Start End Blocks Id System</code></div>
<div class="alt2 index10 line number11"><code>/dev/sda1 * 2048 1026047 512000 83 Linux</code></div>
<div class="alt1 index11 line number12"><code>/dev/sda2 1026048 62466047 30720000 83 Linux</code></div>
<div class="alt2 index12 line number13"><code>/dev/sda3 62466048 103426047 20480000 83 Linux</code></div>
<div class="alt1 index13 line number14"><code>/dev/sda4 103426048 209715199 53144576 5 Extended</code></div>
<div class="alt2 index14 line number15"><code>/dev/sda5 103428096 144388095 20480000 83 Linux</code></div>
<div class="alt1 index15 line number16"><code>/dev/sda6 144390144 152582143 4096000 82 Linux swap / Solaris</code></div>
<div class="alt2 index16 line number17"><code>/dev/sda7 152584192 209715199 28565504 83 Linux</code></div>
<div class="alt1 index17 line number18"><code> </code></div>
<div class="alt2 index18 line number19"><code>磁盘 /dev/sdb：21.5 GB, 21474836480 字节，41943040 个扇区</code></div>
<div class="alt1 index19 line number20"><code>Units = 扇区 of 1 * 512 = 512 bytes</code></div>
<div class="alt2 index20 line number21"><code>扇区大小(逻辑/物理)：512 字节 / 512 字节</code></div>
<div class="alt1 index21 line number22"><code>I/O 大小(最小/最佳)：512 字节 / 8388608 字节</code></div>
<div class="alt2 index22 line number23"><code> </code></div>
<div class="alt1 index23 line number24"><code># parted --script /dev/sdb "mklabel msdos"</code></div>
<div class="alt2 index24 line number25"><code># parted --script /dev/sdb "mkpart primary 0% 100%"</code></div>
<div class="alt1 index25 line number26"><code># mkfs.xfs -i size=1024 -s size=4096 /dev/sdb1</code></div>
<div class="alt2 index26 line number27"><code>meta-data=/dev/sdb1 isize=1024 agcount=4, agsize=1310208 blks</code></div>
<div class="alt1 index27 line number28"><code> </code><code>= sectsz=4096 attr=2, projid32bit=1</code></div>
<div class="alt2 index28 line number29"><code> </code><code>= crc=0 finobt=0</code></div>
<div class="alt1 index29 line number30"><code>data = bsize=4096 blocks=5240832, imaxpct=25</code></div>
<div class="alt2 index30 line number31"><code> </code><code>= sunit=0 swidth=0 blks</code></div>
<div class="alt1 index31 line number32"><code>naming =version 2 bsize=4096 ascii-ci=0 ftype=0</code></div>
<div class="alt2 index32 line number33"><code>log =internal log bsize=4096 blocks=2560, version=2</code></div>
<div class="alt1 index33 line number34"><code> </code><code>= sectsz=4096 sunit=1 blks, lazy-count=1</code></div>
<div class="alt2 index34 line number35"><code>realtime =none extsz=4096 blocks=0, rtextents=0</code></div>
<div class="alt1 index35 line number36"><code># mount /dev/sdb1 /mnt/</code></div>
<div class="alt2 index36 line number37"><code># df -hT</code></div>
<div class="alt1 index37 line number38"><code>文件系统 类型 容量 已用 可用 已用% 挂载点</code></div>
<div class="alt2 index38 line number39"><code>/dev/sda3 xfs 20G 68M 20G 1% /</code></div>
<div class="alt1 index39 line number40"><code>devtmpfs devtmpfs 904M 0 904M 0% /dev</code></div>
<div class="alt2 index40 line number41"><code>tmpfs tmpfs 913M 0 913M 0% /dev/shm</code></div>
<div class="alt1 index41 line number42"><code>tmpfs tmpfs 913M 8.7M 904M 1% /run</code></div>
<div class="alt2 index42 line number43"><code>tmpfs tmpfs 913M 0 913M 0% /sys/fs/cgroup</code></div>
<div class="alt1 index43 line number44"><code>/dev/sda5 xfs 20G 1.5G 19G 8% /usr</code></div>
<div class="alt2 index44 line number45"><code>/dev/sda7 xfs 28G 33M 28G 1% /home</code></div>
<div class="alt1 index45 line number46"><code>/dev/sda2 xfs 30G 694M 29G 3% /var</code></div>
<div class="alt2 index46 line number47"><code>/dev/sda1 xfs 497M 128M 370M 26% /boot</code></div>
<div class="alt1 index47 line number48"><code>tmpfs tmpfs 183M 0 183M 0% /run/user/0</code></div>
<div class="alt2 index48 line number49"><code>/dev/sdb1 xfs 20G 33M 20G 1% /mnt</code></div></div></td></tr></tbody></table></div></div></div>
<p>以上就是小编为大家带来的linux配置ISCSI服务器的方法全部内容了，希望大家多多支持~</p> 感谢楼主的详细教程！配置得很完整，照着步骤做应该能顺利搭建起来。
补充几点小建议：
1. **关于安全性**：生产环境下建议使用独立的网络来跑iSCSI流量，避免和业务网络混用，可以提高性能和安全。另外CHAP认证的用户名密码建议设置得更复杂一些。
2. **关于性能调优**：如果存储性能要求较高，可以考虑使用block类型的后端（blockdev），而不是fileio，性能会更好。
3. **关于防火墙**：如果不想手动创建iscsi.xml，也可以直接放行3260端口：
# firewall-cmd --permanent --add-port=3260/tcp
# firewall-cmd --reload
4. **关于多路径**：如果 initiator 需要冗余连接（比如有多条网络路径），可以配置multipath，这个对生产环境比较重要。
5. **排错小技巧**：如果遇到连接问题，可以用以下命令查看详细日志：
# iscsiadm -m discovery -d 2
# iscsiadm -m node -l -d 2
再次感谢分享，对新手很有帮助！👍
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