Oracle 1Z0-1104-25 Exam - Topic 2 Question 5 Discussion

Task 7: Verify the OCI Certificate with Load Balancer

Step 1: Obtain the Public IP of the Load Balancer

Log in to the OCI Console.

Navigate to Networking > Load Balancers.

Click on PBT-CERT-LB-01.

Note the Public IP Address from the load balancer details page.

Step 2: Verify HTTPS Connection Using Cloud Shell

Open the OCI Cloud Shell from the top-right corner of the OCI Console.

Run the following command, replacing <Public IP of PBT-CERT-LB-01> with the public IP you noted:

curl -k https://<Public IP of PBT-CERT-LB-01>

Expected output: You should see the text 'You are visiting Web Server 1' if the connection is successful. The -k flag ignores certificate validation errors (common during initial testing with self-signed or newly issued certificates).

If you encounter an error, ensure the load balancer is active, the listener is configured correctly, and the backend server (PBT-CERT-VM-01) is reachable.

Step 3: Verify in a Web Browser

Open a web browser.

Enter the following URL, replacing <Public IP of PBT-CERT-LB-01> with the public IP you noted:

https://<Public IP of PBT-CERT-LB-01>

If prompted with a certificate warning (e.g., due to a self-signed certificate or untrusted CA), accept the risk and proceed (click 'Advanced' and 'Proceed' or similar, depending on your browser).

Verify that the web page displays the text 'You are visiting Web Server 1' from the index.html file created on PBT-CERT-VM-01.

Step 4: Troubleshoot (if needed)

If the text is not displayed:

Check the load balancer health status under Backend Sets > Health in the OCI Console.

Ensure the security list PBT-CERT-LB-SL-01 allows port 443 and the compute instance security list allows port 80.

Verify the Apache service is running on PBT-CERT-VM-01 by SSHing in and running sudo systemctl status httpd.

Topic 2, Misc. Questions