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On Tue, Aug 23, 2016 at 04:25:30PM -0400, Rich Freeman wrote: |
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> On Tue, Aug 23, 2016 at 3:57 PM, William Hubbs <williamh@g.o> wrote: |
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> > |
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> > I am planning to change the logic in /etc/init.d/hostname so that if |
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> > /etc/hostname exists, the first word out of that file will be used as |
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> > the hostname rather than any setting in /etc/conf.d/hostname. If you |
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> > don't want /etc/hostname, just don't create it and the settings from |
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> > /etc/conf.d/hostname will still be used. |
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> > |
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> |
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> Keep in mind that this is potentially problematic for a few reasons: |
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> |
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> 1. The hostname could change after openrc is done setting it. If it |
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> does, a program that reads /etc/hostname won't get the real hostname. |
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This is also true for /etc/conf.d/hostname, so I don't see the problem |
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here. |
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> 2. You could have a situation where multiple containers use the same |
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> /etc. Obviously in this situation you wouldn't want to store the |
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> hostname anywhere in /etc unless you wanted them to all have the same |
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> hostname. It would be better to obtain it from dhcp, or to have it |
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> set before init is run during initialization. |
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/etc/init.d/hostname doesn't run inside containers, so this is not |
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relevant. |
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> The main danger is people not thinking of all the scenarios. I'm not |
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> quite sure why we even need /etc/hostname now given these issues and |
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> the fact that we've apparently gotten along for a long time without |
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> it. Have we ever gotten around to making /etc/mtab a symlink yet? I |
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> know it wasn't for a long time. It seems like we are moving away from |
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> container support when we should be moving towards it if anything... |
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Container support is controlled by the keyword line in dependencies. |
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OpenRC can detect most containers, so if you put the proper keywords on |
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that line and RC_SYS is set correctly or the container is autodetected |
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properly, openrc will not run the scripts that it shouldn't run in the |
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container. |
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Yes, /etc/mtab is a symlink by default now; that was taken care of a |
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while back. |
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William |
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