Identify and Fix iSCSI Issues

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Identify and Fix iSCSI Issues

In this exercise, you'll troubleshoot and resolve an issue connecting an iSCSI initiator to the iSCSI target. *This course is not approved or sponsored by Red Hat.*

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Lab Info

Level

Advanced

Last updated

Aug 10, 2025

Duration

1h 30m

Challenge

Review target configuration.

Verify the target service is running:

systemctl status target

Start and enable the target service:

systemctl start target && systemctl enable target

Review the iSCSI target configuration:

targetcli

/> ls

/> iscsi/iqn.2003-01.org.linux-iscsi.ip-10-0-1-10.x8664:sn.a3776832068c/tpg1/ get auth

Challenge

Review initiator configuration.
View existing block devices:
```
lsblk
```
Verify network connectivity to the target:
```
telnet 10.0.1.10 3260
```
Review the initiator configuration file:
```
vim /etc/iscsi/iscsid.conf
```
Comment out the authentication settings:
```
#node.session.auth.authmethod = CHAP
...
#node.session.auth.username = server2
#node.session.auth.password = secret
```
Check for existing target records:
```
iscsiadm -m node
```
Verify the name in /etc/iscsi/initatorname.iscsi matches the target ACL:
```
cat /etc/iscsi/initiatorname.iscsi
```
Retrieve the target from Server1:
```
iscsiadm -m discovery -t sendtargets -p 10.0.1.10
```
Connect to the target:
```
iscsiadm -m node -T iqn.2003-01.org.linux-iscsi.ip-10-0-1-10.x8664:sn.a3776832068c -l
```
Verify the block device is available:
```
lsblk
```

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