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A Cloud Guru

Identify and Fix Pluggable Authentication (PAM) Issues

In this exercise, you will need to troubleshoot and resolve authentication issues preventing Samba access. *This course is not approved or sponsored by Red Hat.*

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Path Info

Level

Advanced

Duration

1h 0m

Published

Apr 04, 2019

Challenge

Verify the Samba service.
Verify the service is running:
```
systemctl status smb
```
Attempt to view the listing of shares on the localhost:
```
smbclient -U cloud_user -L localhost
```
Password: Welcome1
Challenge

Resolve authentication issue.
Check /var/log/secure for any errors:
```
tail /var/log/secure
```
Check the Samba logs for any errors:
```
tail /var/log/samba/log.smbd
```
View the PAM service file:
```
cat /etc/pam.d/samba
```
Verify the package to see if any PAM files are changed:
```
rpm -V samba
```
Move the changes PAM file to /root/samba.pam.old:
```
mv /etc/pam.d/samba /root/samba.pam.old
```
Reinstall Samba to restore the original PAM file:
```
yum reinstall -y samba
```
Restart the Samba service:
```
systemctl restart smb
```
View the listing of shares on the localhost:
```
smbclient -U cloud_user -L localhost
```

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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