Diagnosing The Problem
If HTTPD service is in a failed state, then you can try to search for these logs:
less /var/log/qradar.log | grep -i “Multiple RSA server certificates not allowed”
[Mon Mar 21 16:12:47.461152 2022] [ssl:emerg] [pid 18470] <HOSTNAME>: Init: Multiple RSA server certificates not allowed [Mon Mar 21 16:12:47.461169 2022] [ssl:emerg] [pid 18470] <HOSTNAME>: Fatal error initialising mod_ssl, exiting.
If you get output for the command, then you can follow these Resolving The Problem steps.
Resolving The Problem
- Verify whether there is only 1 .crt file present in /etc/httpd/conf/certs directory:
ls -la /etc/httpd/conf/certs/
- If the directory includes more than one .crt files in certificates directory, rename or move the unused certificate files. Select one of the following:
mv /etc/httpd/conf/certs/<any_name>.crt /etc/httpd/conf/certs/<any_name>.crt_back
mkdir /root/backup.certs/ mv /etc/httpd/conf/certs/<any_name>.crt /root/backup.certs/
- To restart the Tomcat service, type:
systemctl restart tomcat
- Check for the HTTPD and Tomcat service status, both services should be in an active state:
systemctl status tomcat systemctl status httpd
- Test Tomcat connection status, it should show status as Connected to tomcat:
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21 July 2022