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If you can work without problems on an ACS host, but you cannot run clients connecting to it from another host(for example a remote objexp cannot contact the Manager on your host), this is probably due to the configuration of the Linux or ZLegacy/ACS.VxWorks network services. The IP address or the hostname (depending on some ORB configuration switches) are part of the IOR of CORBA objects, since IP resolution is needed to communicate with the object. All IORs generated in ACS applications and tools use the IP address. However, external CORBA applications might use the hostname instead of the IP address. In any case, to properly communicate between hosts it is necessary to be able to resolve a PC's own hostname with the real network IP address to be used for communication. This means that it is necessary to have the 127.0.0.1 localhost.localdomain localhost 134.171.12.202 te1.hq.eso.org te1 Notice that:
In particular we have seen two different kind of problems:
127.0.0.1 <hostname> localhost That is, the entry contains the explicit host name.
### bootScript entries: ### # maciManager runs on midnight-vml hostAdd "midnight-vml.aoc.nrao.edu","146.88.10.124" ### userScript entries: ### putenv "MANAGER_REFERENCE=corbaloc::midnight-vml.aoc.nrao.edu:3000/Manager" Machines with multiple network interfaces and/or VPNNotice that when a machine has multiple network interfaces, the first entry in /etc/hosts will normally be used. With JacORB you can easily tell the ORB to use a different mapping by editing the .jacorb_properties file and set the This is useful when accessing the network through a VPN tunnel. Set the Possible side effects of manipulating /etc/hostsOn Fedora Core 2, the -- DavidFugate - 09 Aug 2004 |
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