Login to CloudForms webui by LDAP user fails due to connection problem to LDAP server. How to change LDAP server details / configuration and point to new server ?

Issue

• Login to CloudForms webui by LDAP user fails due to connection problem to LDAP server. How to change LDAP server details / configuration and point to new server ?

• Login to CloudForms webui fails with bellow error in log :

[----] I, [2014-02-10T13:02:09.974940 #26278:155fbcf52644]  INFO -- : MIQ(MiqLdap.initialize) Server Settings: {:ldapport=>"389", :user_type=>"userprincipalname", :user_suffix=>nil, :bind_dn=>nil, :mode=>"ldap", :bind_pwd=>"********", :group_memberships_max_depth=>2, :ldap_role=>false, :follow_referrals=>false, :user_proxies=>[{}], :ldaphost=>["ldap-host.example.com"], :get_direct_groups=>true, :basedn=>nil}
[----] E, [2014-02-10T13:02:10.054519 #26278:155fbcf52644] ERROR -- : [Net::LDAP::LdapError]: unable to establish a connection to server  Method:[authenticate]
[----] E, [2014-02-10T13:02:10.054681 #26278:155fbcf52644] ERROR -- : /var/www/miq/vmdb/app/models/miq_ldap.rb:77:in `resolve_host'