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A Cloud Guru

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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Path Info

Level

Advanced

Duration

1h 30m

Published

Apr 04, 2019

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
```

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

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