iscsi开机自动挂载和认证配置

iscsi开机挂载和认证配置

iscsi 开机自启

# ①：发现iscsi设备
[root@localhost ~]# iscsiadm -m discovery -t st -p 192.168.0.10

# ②：注册iscsi设备，此时就可以看到磁盘了
[root@localhost ~]# iscsiadm -m node -T iqn.2021-8.com.target:mystore -p 192.168.0.10:3260 -l

# ③：如果有多路径，配置完多路径后写fstab,_netdev(防止开机一直卡这里)
[root@localhost ~]# echo "UUID=370b5610-c712-43c0-a210-0abc53ba2257 /mnt ext4 defaults,_netdev 0 0" >> /etc/fstab
[root@localhost ~]# mount -a

# 查看默认是否自动登录
[root@localhost ~]# cat /var/lib/iscsi/nodes/iqn.2021-8.com.target\:mystore/192.168.0.10\,3260\,1/default | grep startup
node.startup = automatic  #代表会自动登录
node.conn[0].startup = manual

# 查看session
[root@localhost ~]# iscsiadm -m node
192.168.0.10:3260,1 iqn.2021-8.com.target:mystore

# 查看ISCSID服务（默认会开机自启，且必须要MASK该服务才可以让其不开机自启，否则一直开机自启）
[root@localhost ~]# systemctl status iscsid
● iscsid.service - Open-iSCSI
   Loaded: loaded (/usr/lib/systemd/system/iscsid.service; disabled; vendor preset: disabled)
   Active: active (running) since 三 2022-02-23 22:24:05 CST; 10s ago
     Docs: man:iscsid(8)
           man:iscsiuio(8)
           man:iscsiadm(8)
 Main PID: 1518 (iscsid)
   Status: "Ready to process requests"
   CGroup: /system.slice/iscsid.service
           └─1518 /sbin/iscsid -f
           
           
# 重新扫描会话
[root@localhost ~]# iscsiadm -m node -R
Rescanning session [sid: 1, target: iqn.2021-8.com.target:mystore, portal: 192.168.0.10,3260]

# 查看注册的卷
[服务未授权][root@localhost ~]# cat /proc/scsi/scsi 
Attached devices:
Host: scsi1 Channel: 00 Id: 00 Lun: 00
  Vendor: NECVMWar Model: VMware IDE CDR10 Rev: 1.00   #LUN=0 会被Controller使用，LUN从1开始
  Type:   CD-ROM                           ANSI  SCSI revision: 05
Host: scsi2 Channel: 00 Id: 00 Lun: 00
  Vendor: IET      Model: Controller       Rev: 0001
  Type:   RAID                             ANSI  SCSI revision: 05
Host: scsi2 Channel: 00 Id: 00 Lun: 01
  Vendor: sdb      Model: VIRTUAL-DISK     Rev: 0001
  Type:   Direct-Access                    ANSI  SCSI revision: 05
  

# 二台机器登录后去看磁盘整列的磁盘UUID都一样，可说明该UUID是有磁盘整列那边提供的
[root@localhost ~]# blkid /dev/sda
/dev/sda: UUID="370b5610-c712-43c0-a210-0abc53ba2257" TYPE="ext4"
[root@localhost ~]# blkid /dev/sdc
/dev/sdc: UUID="370b5610-c712-43c0-a210-0abc53ba2257" TYPE="ext4"

iscsi认证

# 命令方式添加认证信息
# 发现节点
[root@localhost ~]# iscsiadm -m discovery -t st -p 192.168.0.10
192.168.0.10:3260,1 iqn.2021-8.com.target:mystore

# 设置认证方式
[root@localhost ~]# iscsiadm -m node -T iqn.2021-8.com.target:mystore -o update -n node.session.auth.authmethod -v CHAP

# 设置用户名
[root@localhost ~]# iscsiadm -m node -T iqn.2021-8.com.target:mystore -o update -n node.session.auth.username -v iscsi

# 设置登录密码
[root@localhost ~]# iscsiadm -m node -T iqn.2021-8.com.target:mystore -o update -n node.session.auth.password -v 123456

# 登录
[root@localhost ~]# iscsiadm -m node -T iqn.2021-8.com.target:mystore -p 192.168.0.10:3260 -l
Logging in to [iface: default, target: iqn.2021-8.com.target:mystore, portal: 192.168.0.10,3260] (multiple)
Login to [iface: default, target: iqn.2021-8.com.target:mystore, portal: 192.168.0.10,3260] successful.

# 配置文件方式添加认证，修改配置文件如下
[root@localhost ~]# cat /etc/iscsi/iscsid.conf
..........................................................
node.session.auth.authmethod = CHAP
node.session.auth.username = iscsi
node.session.auth.password = 123456
node.startup = automatic
.............................................................

# 发现节点
[root@localhost ~]# iscsiadm -m discovery -t st -p 192.168.0.10
192.168.0.10:3260,1 iqn.2021-8.com.target:mystore

# 登录
[root@localhost ~]# iscsiadm -m node -T iqn.2021-8.com.target:mystore -p 192.168.0.10:3260 -l
Logging in to [iface: default, target: iqn.2021-8.com.target:mystore, portal: 192.168.0.10,3260] (multiple)
Login to [iface: default, target: iqn.2021-8.com.target:mystore, portal: 192.168.0.10,3260] successful.