iSCSI : Configure Initiator2024/12/31 |
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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 ~]#
dnf -y install iscsi-initiator-utils
[root@node01 ~]#
vi /etc/iscsi/initiatorname.iscsi # set to the same IQN you set on the iSCSI target server InitiatorName=iqn.2024-12.world.srv:node01.initiator
[root@node01 ~]#
vi /etc/iscsi/iscsid.conf # line 67 : uncomment node.session.auth.authmethod = CHAP # line 79,80 : uncomment and specify the username and password you set on the iSCSI target server node.session.auth.username = username node.session.auth.password = password
# discover target [root@node01 ~]# iscsiadm -m discovery -t sendtargets -p 10.0.0.30 10.0.0.30:3260,1 iqn.2024-12.world.srv:dlp.target01 # confirm status after discovery [root@node01 ~]# iscsiadm -m node -o show # BEGIN RECORD 6.2.1.9 node.name = iqn.2024-12.world.srv:dlp.target01 node.tpgt = 1 node.startup = automatic node.leading_login = No iface.iscsi_ifacename = default ..... ..... node.conn[0].iscsi.DataDigest = None node.conn[0].iscsi.IFMarker = No node.conn[0].iscsi.OFMarker = No # END RECORD # login to the target # if logout ⇒ iscsiadm --mode node --logoutall=all [root@node01 ~]# iscsiadm -m node --login -p 10.0.0.30 Logging in to [iface: default, target: iqn.2024-12.world.srv:dlp.target01, portal: 10.0.0.30,3260] Login to [iface: default, target: iqn.2024-12.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.2024-12.world.srv:dlp.target01 (non-flash) # confirm the partitions [root@node01 ~]# cat /proc/partitions major minor #blocks name 252 0 31457280 sda 252 1 1024 sda1 252 2 1048576 sda2 252 3 30405632 sda3 253 0 27258880 dm-0 253 1 3145728 dm-1 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 follows. |
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# create label [root@node01 ~]# parted --script /dev/sdb "mklabel gpt" # create partition [root@node01 ~]# parted --script /dev/sdb "mkpart primary 0% 100%" # format with XFS [root@node01 ~]# mkfs.xfs /dev/sdb1
meta-data=/dev/sdb1 isize=512 agcount=4, agsize=654336 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=1
= reflink=1 bigtime=1 inobtcount=1 nrext64=1
= exchange=0
data = bsize=4096 blocks=2617344, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1, parent=0
log =internal log bsize=4096 blocks=16384, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@node01 ~]# mount /dev/sdb1 /mnt [root@node01 ~]# df -hT Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/cs-root xfs 26G 2.4G 24G 9% / devtmpfs devtmpfs 4.0M 0 4.0M 0% /dev tmpfs tmpfs 1.8G 0 1.8G 0% /dev/shm tmpfs tmpfs 731M 8.7M 722M 2% /run tmpfs tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-journald.service /dev/sda2 xfs 960M 369M 592M 39% /boot tmpfs tmpfs 1.0M 0 1.0M 0% /run/credentials/serial-getty@ttyS0.service tmpfs tmpfs 1.0M 0 1.0M 0% /run/credentials/getty@tty1.service tmpfs tmpfs 366M 4.0K 366M 1% /run/user/0 /dev/sdb1 xfs 10G 227M 9.8G 3% /mnt |
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