How to create MCS master for multi-domain environment

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Instructions

1. Run /opt/Citrix/VDA/sbin/ctxinstall.sh first.

2. Configure /etc/xdl/mcs/mcs.conf as usual but must use existing configurations


3. Edit /etc/krb5.conf and add multidomain information in [realms] and [domain_realm].

4. Add both LDAP servers from two different domains into ctxreg:
/opt/Citrix/VDA/bin/ctxreg create -k "HKLM\Software\Citrix\VirtualDesktopAgent" -t "REG_SZ" -v "ListOfLDAPServers" -d "LDAPServer1:389 LDAPServer2:389" --force
The command can be run repeatedly.
Each time you restart "ctxhdx" service, the new value will win.
You can check current setting by /opt/Citrix/VDA/bin/ctxreg dump | grep -i ListOfLDAPServers  

5. Run /opt/Citrix/VDA/sbin/deploymcs.sh
Make sure to run deploymcs.sh each time after you update the master.

6. Shut down the master and take a snapshot.
    Then, do MCS as usual.