[warn] RSA server certificate CommonName (CN) `plesk’ does NOT match server name!?

Apache log: “[warn] RSA server certificate CommonName (CN) `plesk’ does NOT match server name!?”

Article ID: 1500
Created On: Oct 6, 2008
Last Review: Feb 28, 2014
Views:
APPLIES TO:

  • Parallels Plesk Automation 11.5
  • Parallels Plesk Panel for Linux/Unix

Symptoms

Apache error log /var/log/httpd/error_log contains warnings:

[Mon Sep 04 15:12:13 2006] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?

Cause

This warning means that with CN parameter of the certificate installed on one of domains doesn’t match value specified by directiveServerName in the corresponding VirtualHost configuration. Additional information about SNI (Server Name Indication) could be obtained here.

Resolution

This warning can be safely ignored.

Alternatively you may regenerate the certificate to make its subject match the domain it is aimed to secure.

To obtain subjects of all installed certificates please use the following shell command:

 # for i in `ls /usr/local/psa/var/certificates/`; do echo -n $i": "; openssl x509 -in /usr/local/psa/var/certificates/$i -subject -noout; done

Also you may download and use attached script to obtain subjects, it runs the same command as above. To use the sciprt:

# cd ~
# wget http://kb.parallels.com/Attachments/kcs-15116/cert.tar
# tar -xvf cert.tar
# chmod +x cert.sh
# ./cert.sh

NOTE: In Parallels Plesk Automations it is needed to execute this command on the Management Node.

As a result script will give you output like following:

subject= /C=US/ST=Virginia/L=Herndon/O=Parallels/OU=Parallels Panel/CN=Parallels Panel/emailAddress=info@parallels.com
subject= /C=RU/ST=Oregon/L=Springfield/O=Customer1, Inc/CN=www.testlog.test/emailAddress=admin@example.com

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