Renewing SSL Certs in Oracle Weblogic

Renewing SSL certificates in an Oracle WebLogic domain involves several steps to ensure the new certificate is correctly installed and configured without disrupting the service. Here's a general guide based on standard practices and available information:

### Step-by-Step Guide to Renew SSL Certificates in Oracle WebLogic:

1. Generate a New Certificate:

???- You can use tools like Keytool to generate a new key pair (public and private key) or use an existing one if your organization has a process for certificate renewal from a Certificate Authority (CA).

???```bash

???keytool -genkeypair -alias server_cert -keyalg RSA -keysize 2048 -validity 365 -keystore your_keystore.jks -dname "CN=yourdomain.com, OU=YourOrgUnit, O=YourOrg, L=YourCity, S=YourState, C=YourCountry"

???```

???- If you're obtaining a certificate from a CA, you'll typically generate a Certificate Signing Request (CSR):

???```bash

???keytool -certreq -keyalg RSA -alias server_cert -file certreq.csr -keystore your_keystore.jks

???```

2. Obtain the Certificate:

???- Submit the CSR to a CA. Once approved, you'll receive a certificate to import back into your keystore.

???```bash

???keytool -importcert -alias server_cert -file your_certificate.cer -keystore your_keystore.jks

???```

3. Update WebLogic Configuration:

???- Access the WebLogic Server Administration Console.

???- Navigate to the Keystores tab under your server's configuration and update the keystore path to point to your new keystore or ensure the renewed certificate is in the correct location.

???- Go to the SSL tab:

?????- Update the identity and trust keystores if you're using custom settings.?

?????- Enter the private key alias (e.g., server_cert) and ensure the password matches the keystore password.

4. Configure Node Manager (if applicable):

???- If you're using Node Manager to manage your servers, ensure it's configured to use the new keystore and SSL settings. This might involve updating the nodemanager.properties file.

5. Restart the Servers:

???- After updating the SSL configuration, you'll need to restart the Admin Server and all Managed Servers for the changes to take effect.?

6. Test Your Configuration:

???- Ensure all applications are accessible over HTTPS and there are no certificate warnings or errors in the browser or client applications.

7. Automate Certificate Renewal (Optional but Recommended):

???- Consider setting up automation for certificate renewal using tools like Certbot for Let's Encrypt certificates or any other ACME client, especially if using a public CA with short-lived certificates. However, integrating directly with WebLogic might require custom scripting or using middleware tools that support WebLogic.

8. Monitor Certificate Expiry:

???- Implement monitoring to alert you before certificates expire in the future. This can be done using scripts that check certificate expiration dates or integrate with monitoring tools.

### Important Notes:

- Backup: Always back up your current configuration and keystore before making changes.

- Compatibility: Ensure that the new certificate is compatible with your version of WebLogic. Some older versions have limitations on key sizes or algorithms.

- Security: Handle your private keys securely. Please don't expose them in logs or insecure communications.

This outline should help you through the process, but please always refer to the latest Oracle documentation or your organization's specific security policies for detailed and version-specific instructions.