| Message ID | 20210515100822.11784-1-mail@cbaines.net |
|---|---|
| State | Accepted |
| Headers | show |
| Series | [bug#48435] Start enabling substitutes from bayfront. | expand |
| Context | Check | Description |
|---|---|---|
| cbaines/comparison | success | View comparision |
| cbaines/git branch | success | View Git branch |
| cbaines/applying patch | success | View Laminar job |
| cbaines/issue | success | View issue |
Hello Chris,
> + guix_substitute_urls="https://ci.guix.gnu.org https://bayfront.guix.gnu.org"
What is the rationale behind adding a new substitution server? I feel
like having two substitute servers will make things more complex in term
of maintenance.
Having both servers compute the same set of substitutes is also not
great from an energetic and resource saving point of view.
Thanks,
Mathieu
Mathieu Othacehe <othacehe@gnu.org> writes: > Hello Chris, > >> + guix_substitute_urls="https://ci.guix.gnu.org https://bayfront.guix.gnu.org" > > What is the rationale behind adding a new substitution server? I feel > like having two substitute servers will make things more complex in term > of maintenance. > > Having both servers compute the same set of substitutes is also not > great from an energetic and resource saving point of view. Hey, I should have probably written a cover letter, but this patch is me starting to try and work out the changes involved in getting substitutes from bayfront to general Guix users, but the discussion has been happening in this thread [1]. 1: https://lists.gnu.org/archive/html/guix-devel/2021-05/msg00241.html Bayfront has been around for a while, and has been serving substitutes, although I'm not sure it's provided much value to users in that time. I hope that can change with switching to using the Guix Build Coordinator though, that happened around a month ago, and it's slowly building things and catching up. I guess there's a greater need to maintain it if starts getting used by more users, so I do think the maintenance involved is something to consider. Personally, I see the arguments for having multiple substitute servers getting stronger over time. Multiple independent substitute servers would provide more reliability than a single source, as well as enabling things like K of N trust in substitutes [2]. 2: https://lists.gnu.org/archive/html/guix-devel/2020-06/msg00179.html In terms of energy and resources, currently there are 5 machines in use, most of which were mostly idle before being put to use building things for substitutes. While having them build things does use more power than having them idle, I think the value provided, even if that's providing exactly the same bytes as ci.guix.gnu.org, is worth the cost, for the reasons I give above. Thanks, Chris
diff --git a/Makefile.am b/Makefile.am index 4cbef5a6e6..bad17e59fd 100644 --- a/Makefile.am +++ b/Makefile.am @@ -584,7 +584,8 @@ check-system: $(GOBJECTS) dist_pkgdata_DATA = \ etc/substitutes/berlin.guix.gnu.org.pub \ etc/substitutes/ci.guix.gnu.org.pub \ - etc/substitutes/ci.guix.info.pub + etc/substitutes/ci.guix.info.pub \ + etc/substitutes/bayfront.guix.gnu.org.pub # Bash completion file. dist_bashcompletion_DATA = etc/completion/bash/guix \ diff --git a/config-daemon.ac b/config-daemon.ac index 85caee269b..ee2ffbff42 100644 --- a/config-daemon.ac +++ b/config-daemon.ac @@ -117,7 +117,7 @@ if test "x$guix_build_daemon" = "xyes"; then dnl Determine the appropriate default list of substitute URLs (GnuTLS dnl is required so we can default to 'https'.) - guix_substitute_urls="https://ci.guix.gnu.org" + guix_substitute_urls="https://ci.guix.gnu.org https://bayfront.guix.gnu.org" AC_MSG_CHECKING([for default substitute URLs]) AC_MSG_RESULT([$guix_substitute_urls]) diff --git a/etc/substitutes/bayfront.guix.gnu.org.pub b/etc/substitutes/bayfront.guix.gnu.org.pub new file mode 100644 index 0000000000..0092301e5a --- /dev/null +++ b/etc/substitutes/bayfront.guix.gnu.org.pub @@ -0,0 +1,6 @@ +(public-key + (ecc + (curve Ed25519) + (q #7D602902D3A2DBB83F8A0FB98602A754C5493B0B778C8D1DD4E0F41DE14DE34F#) + ) + ) diff --git a/guix/scripts/substitute.scm b/guix/scripts/substitute.scm index 8e4eae00b3..2fa2b1e219 100755 --- a/guix/scripts/substitute.scm +++ b/guix/scripts/substitute.scm @@ -638,7 +638,8 @@ found." (#f ;; This can only happen when this script is not invoked by the ;; daemon. - '("http://ci.guix.gnu.org")))) + '("http://ci.guix.gnu.org" + "http://bayfront.guix.gnu.org")))) ;; In order to prevent using large number of discovered local substitute ;; servers, limit the local substitute urls list size. diff --git a/guix/store.scm b/guix/store.scm index 9d706ae590..8fca37283f 100644 --- a/guix/store.scm +++ b/guix/store.scm @@ -783,7 +783,8 @@ encoding conversion errors." (map (if (false-if-exception (resolve-interface '(gnutls))) (cut string-append "https://" <>) (cut string-append "http://" <>)) - '("ci.guix.gnu.org"))) + '("ci.guix.gnu.org" + "bayfront.guix.gnu.org"))) (define (current-user-name) "Return the name of the calling user."