Identify and fix iSCSI issues

1.5 hours
  • 2 Learning Objectives

About this Hands-on Lab

In this exercise, you’ll troubleshoot and resolve an issue connecting an iSCSI initiator to the iSCSI target.

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

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
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

Additional Resources

Another administrator has configured Server1 as an iSCSI target and Server2 as an initiator, but is having trouble connecting. They've asked you for assistance in successfully connecting the initiator to the target.

What are Hands-on Labs

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

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