This article applies to:

• SIEM LME/SE 2.3.x

Question:

• How can I update SIEM when the hostname must be changed? 

Procedure:

This article addresses procedures needed to update the host name information and SSL certificate for hostname changes to single-tier and multi-tier SEIM LME/SE installations.

1. Collect certificate information, such as whether the certificate used is a third party or self-signed certificate, and the certificate details:  Country Code, State or Province, Locality, Organization, Organizational Unit, Common Name, and Email Address.
2. Log in to the SIEM UI as Administrator. 
3. Navigate to Configuration > Nodes.  Select DA tier and navigate to Network > Domain/Hosts.
   • For a single-tier installation, select the single-tier and navigate to Network > Domain/Hosts.
4. Edit the DNS Domain Name field for this tier as desired. 
5. Save the configuration and restart Network Service.  For a single-tier, skip Step 6.
6. Repeat Steps 2 and 3 for each tier, saving the SDW tier as last.
7. Log out of the SIEM UI.
8. Log in to the SDW Command line interface (CLI) as root. Change directory:
   cd /opt/nsm/certificate/bin
9. Run ./certgen.sh postinstall
10. Create a certificate using the information collected in Step 1.
    •  Note that if the installed certificate was a third-party signed certificate, you will need to request a new certificate from the signing Certificate Authority.

Notes:

See the appropriate Administration Guide for further details on certificate generation.