My build machine is noisy & generates heat, so I leave it powered off when it's not actively in use.
As a consequence, it gets rebooted rather often. It is configured to run rsyncd(8) so I can update my laptop's local mirror of the FreeBSD SVN repository. A couple of mornings ago, I woke up, ready to start my daily builds (on the laptop & build machine), but noticed that the SVN mirror on the laptop hadn't been updated. Eventually, I discovered that the reason was that amd(8) [on the build machine] was listening on 873/tcp, which is the port for rsync. I restarted amd(8); it happened to get other ports, so I restarted rsyncd(8), and was able to perfomr the mirroring. Mind, that was the first time since around February that I've had a problem with using rsyncd(8) in this fashion. Since then, I've become a bit ... sensitized .... to the issue, so a quick "sockstat -4l" immediately after powering it on helps avoid ths sort of thing. So this evening, such a check showed that ypbind(8) was listening on 873/tcp. The most straightforward way to make this a non-issue (it seems to me) would be to start rsyncd(8) before other services that grab arbitrary ports; however, the start-up script for rsyncd s[ecifies: # PROVIDE: rsyncd # REQUIRE: LOGIN # BEFORE: securelevel # KEYWORD: shutdown and both amd & ypbind specify # BEFORE: DAEMON so that approach doesn't seem to quite work out. (I note that I recently stopped tracking stable/7 on the build machine, so I now boot into stable/8; perhaps something changed between stable/7 and stable/8 that inicreases the probability of such an unfortunate collsion.) Also, rsyncd(8) doesn't appear to consider this a condition worthy of note -- at least, I wasn't able to find any whines, and the daemon was still running. Anyone have suggestions for avoiding a recurrence (vs. working around the coiindition should one occur)? Thanks! Peace, david -- David H. Wolfskill da...@catwhisker.org Depriving a girl or boy of an opportunity for education is evil. See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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