On Tue, 15 Aug 2006, Alan Robertson wrote: > Contrary to the implication given in this thread -- IPaddr and IPaddr2 > do NOT do the same thing.
Oh. Their write-ups, describing their user-interface (as if "black box") http://www.linux-ha.org/HeartbeatResourceAgent/IPaddr http://www.linux-ha.org/HeartbeatResourceAgent/IPaddr2 look very similar. (A clause at the end in "Special Note" contrasts the number of interfaces, but apart from they look almost the same.) Shifting from the external "black box" viewpoint to the internal "under the bonnet (US hood!)" viewpoint: Their internal implementations might be very different. (I haven't looked in detail, but I see that the "...2" variant contains some bash-isms and doesn't run under true Bourne-shell ). The question is: Why do we need to offer two different things to the end-user? I (we?) had been working on the assumption that IPaddr2 was a variant of IPaddr (same external "black-box" end-user interface) that was, as a matter of internal detail, better suited to Linux (and also allowed more interfaces). Alan: Could you briefly describe, please, the differences between the two things: (1) differences that are external black-box view (e.g. as documented in those URLs); (2) internal differences (e.g. allowing more interfaces). It still feels that we ought to be able to keep things to a simple, single end-user (black-box) interface that, in internal construction, could take best advantage of the particular OS/environment (including offering as many interfaces as necessary). But, as a mere novice, I'd be delighted to learn more of the truth! Thanks. -- : David Lee I.T. Service : : Senior Systems Programmer Computer Centre : : Durham University : : http://www.dur.ac.uk/t.d.lee/ South Road : : Durham DH1 3LE : : Phone: +44 191 334 2752 U.K. : _______________________________________________________ Linux-HA-Dev: [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha-dev Home Page: http://linux-ha.org/
