Re: On possibly "finer" dependencies in s6-rc

From: Casper Ti. Vector <>
Date: Tue, 2 May 2017 11:33:56 +0800

I just realised that we can set up a oneshot for the disjunction with
its dependencies being the intersection of the dependencies of all
services in the disjunction, with the `up' and `down' being something
like `s6-svwait -o -[ud] srv1 srv2 ...' ([ud]: `u' for `up', `d' for
`down'), so perhaps no change is need after all in s6-rc.

Nevertheless, s6-svwait -o seems to also fail if some failure occurs
before the wanted state is reached, eg. one `dnscrypt-proxy' instance
reporting permanent failure before another one comes up successfully.
So we might need to add an option to ignore such failures.

On Tue, Feb 14, 2017 at 09:31:47PM +0000, Laurent Bercot wrote:
> If that kind of setup can be generalized, I'm not opposed to adding a
> "failover instance manager" set of programs to s6, because I believe it's
> reasonably in scope. I would much rather do that than add disjunction
> management to s6-rc.

My current OpenPGP key:
RSA4096/0x227E8CAAB7AA186C (expires: 2020.10.19)
7077 7781 B859 5166 AE07 0286 227E 8CAA B7AA 186C
Received on Tue May 02 2017 - 03:33:56 UTC

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