iSCSI : Configure iSCSI Initiator2021/05/07 |
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Configure iSCSI Initiator.
This example is based on the environment like follows.
+----------------------+ | +----------------------+ | [ iSCSI Target ] |10.0.0.30 | 10.0.0.51| [ iSCSI Initiator ] | | dlp.srv.world +----------+----------+ node01.srv.world | | | | | +----------------------+ +----------------------+ |
| [1] | Configure iSCSI Initiator to connect to iSCSI Target. |
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root@node01:~#
apt -y install open-iscsi
root@node01:~#
vi /etc/iscsi/initiatorname.iscsi # change to the same IQN you set on the iSCSI target server InitiatorName= iqn.2021-05.world.srv:node01.initiator01
root@node01:~#
vi /etc/iscsi/iscsid.conf # line 59 : uncomment node.session.auth.authmethod = CHAP # line 70,71: uncomment and specify the username and password you set on the iSCSI target server node.session.auth.username = username node.session.auth.password = password
root@node01:~#
systemctl restart iscsid open-iscsi
# discover target root@node01:~# iscsiadm -m discovery -t sendtargets -p 10.0.0.30 10.0.0.30:3260,1 iqn.2021-05.world.srv:dlp.target01 # confirm status after discovery root@node01:~# iscsiadm -m node -o show # BEGIN RECORD 2.1.3 node.name = iqn.2021-05.world.srv:dlp.target01 node.tpgt = 1 node.startup = manual node.leading_login = No iface.iscsi_ifacename = default ..... ..... node.conn[0].iscsi.HeaderDigest = None node.conn[0].iscsi.DataDigest = None node.conn[0].iscsi.IFMarker = No node.conn[0].iscsi.OFMarker = No # END RECORD # login to the target root@node01:~# iscsiadm -m node --login Logging in to [iface: default, target: iqn.2021-05.world.srv:dlp.target01, portal: 10.0.0.30,3260] Login to [iface: default, target: iqn.2021-05.world.srv:dlp.target01, portal: 10.0.0.30,3260] successful. # confirm the established session root@node01:~# iscsiadm -m session -o show tcp: [1] 10.0.0.30:3260,1 iqn.2021-05.world.srv:dlp.target01 (non-flash) # confirm the partitions root@node01:~# cat /proc/partitions major minor #blocks name 7 0 70896 loop0 7 1 33048 loop1 7 2 70848 loop2 7 3 56780 loop3 252 0 31457280 sda 252 1 1024 sda1 252 2 1048576 sda2 252 3 30405632 sda3 253 0 20971520 dm-0 11 0 1048575 sr0 8 0 10485760 sdb # added new device provided from the target server as [sdb]
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| [2] | After setting iSCSI device, configure on Initiator to use it like follwos. |
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# create label root@node01:~# parted --script /dev/sdb "mklabel gpt" # create partiton root@node01:~# parted --script /dev/sdb "mkpart primary 0% 100%" # format with ext4 root@node01:~# mkfs.ext4 /dev/sdb1
mke2fs 1.45.7 (28-Jan-2021)
Creating filesystem with 2617344 4k blocks and 655360 inodes
Filesystem UUID: 2b21d713-b106-4161-a299-5a199a3b866d
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
Allocating group tables: done
Writing inode tables: done
Creating journal (16384 blocks): done
Writing superblocks and filesystem accounting information: done
root@node01:~# mount /dev/sdb1 /mnt root@node01:~# df -hT Filesystem Type Size Used Avail Use% Mounted on tmpfs tmpfs 393M 1.1M 392M 1% /run /dev/mapper/ubuntu--vg-ubuntu--lv ext4 20G 6.4G 13G 34% / tmpfs tmpfs 2.0G 0 2.0G 0% /dev/shm tmpfs tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs tmpfs 4.0M 0 4.0M 0% /sys/fs/cgroup /dev/sda2 ext4 976M 128M 782M 14% /boot tmpfs tmpfs 393M 4.0K 393M 1% /run/user/0 /dev/sdb1 ext4 9.8G 37M 9.3G 1% /mnt |
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