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Unable to access Jupyter Notebook on OCI Compute instance (OCI Lab Environment, Frankfurt region)

Vinaykumar KoudiDec 31 2025

Hello Team,

I am working in an OCI Lab environment and created the VCN and Compute instance
using OCI Cloud Shell (CLI) in the Germany (Frankfurt) region.

I have installed and started Jupyter Notebook successfully on the compute instance,
but I am unable to access it from the browser using the public IP.

Service: OCI Compute
Region: eu-frankfurt-1 (Germany – Frankfurt)
Environment: OCI Lab Environment
Provisioning method: OCI Cloud Shell (CLI)

What I am trying to do:
- Run Jupyter Notebook on an OCI Compute instance
- Access it via browser using public IP and port 8888

Steps followed:
1. Created VCN, subnet, and compute instance using OCI Cloud Shell
2. Installed Jupyter Notebook
3. Started Jupyter using:
jupyter notebook --ip=0.0.0.0 --port=8888 --no-browser

Verification done:
- Jupyter process is running
- Port 8888 is listening:
ss -tulnp | grep 8888
Output:
LISTEN 0 128 0.0.0.0:8888

- Checked the Security List / NSG associated with the subnet and instance

Issue:
- When accessing:
http://<public-ip>:8888
the browser shows "Site can’t be reached"

Additional note:
- This is an OCI Lab environment, so I am not sure if there are any
restrictions on inbound traffic or public IP access for custom ports.

Expected behavior:
- Jupyter Notebook UI should open in the browser

Could you please confirm if accessing custom ports (like 8888) is allowed
in OCI Lab environments, or if any additional configuration is required?

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Added on Dec 31 2025
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