Here's the dump:
Fri Dec 25 14:32:55 2015 OpenVPN 2.3.7 x86_64-redhat-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [MH] [IPv6] built on Jun 9 2015
Fri Dec 25 14:32:55 2015 library versions: OpenSSL 1.0.1e-fips 11 Feb 2013, LZO 2.03
Fri Dec 25 14:32:55 2015 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Fri Dec 25 14:32:55 2015 Cannot load private key file /var/lib/nethserver/certs/clients/central-server.pem: error:0B080074:x509 certificate routines:X509_check_private_key:key values mismatch
Fri Dec 25 14:32:55 2015 Error: private key password verification failed
Fri Dec 25 14:32:55 2015 Exiting due to fatal error
Fri Dec 25 14:45:51 2015 OpenVPN 2.3.7 x86_64-redhat-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [MH] [IPv6] built on Jun 9 2015
Fri Dec 25 14:45:51 2015 library versions: OpenSSL 1.0.1e-fips 11 Feb 2013, LZO 2.03
Fri Dec 25 14:45:51 2015 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Fri Dec 25 14:45:51 2015 Cannot load certificate file /var/lib/nethserver/certs/clients/central-server.pem: error:0906D06C:PEM routines:PEM_read_bio:no start line: error:140AD009:SSL routines:SSL_CTX_use_certificate_file:PEM lib
Fri Dec 25 14:45:51 2015 Exiting due to fatal error
Fri Dec 25 14:52:44 2015 OpenVPN 2.3.7 x86_64-redhat-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [MH] [IPv6] built on Jun 9 2015
Fri Dec 25 14:52:44 2015 library versions: OpenSSL 1.0.1e-fips 11 Feb 2013, LZO 2.03
Fri Dec 25 14:52:44 2015 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Fri Dec 25 14:52:44 2015 Error: private key password verification failed
Fri Dec 25 14:52:44 2015 Exiting due to fatal error
Fri Dec 25 14:53:17 2015 OpenVPN 2.3.7 x86_64-redhat-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [MH] [IPv6] built on Jun 9 2015
Fri Dec 25 14:53:17 2015 library versions: OpenSSL 1.0.1e-fips 11 Feb 2013, LZO 2.03
Fri Dec 25 14:53:17 2015 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Fri Dec 25 14:53:17 2015 Error: private key password verification failed
Fri Dec 25 14:53:17 2015 Exiting due to fatal error