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Hack to get SSH error messages from build-remote

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E.g.

  cannot build on 'ssh://mac1': cannot connect to 'mac1': bash: nix-store: command not found
  cannot build on 'ssh://mac2': cannot connect to 'mac2': Host key verification failed.
  cannot build on 'ssh://mac3': cannot connect to 'mac3': Received disconnect from 213... port 6001:2: Too many authentication failures
  Authentication failed.
This commit is contained in:
Eelco Dolstra 2018-03-20 15:17:59 +01:00
parent 78d0c72b52
commit 1aca195e52
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GPG key ID: 8170B4726D7198DE
4 changed files with 33 additions and 7 deletions
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8
src/build-remote/build-remote.cc
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@ -191,8 +191,10 @@ int main (int argc, char * * argv)
storeUri = bestMachine->storeUri;
} catch (std::exception & e) {
printError("unable to open SSH connection to '%s': %s; trying other available machines...",
bestMachine->storeUri, e.what());
auto msg = chomp(drainFD(5, false));
printError("cannot build on '%s': %s%s",
bestMachine->storeUri, e.what(),
(msg.empty() ? "" : ": " + msg));
bestMachine->enabled = false;
continue;
}
@ -202,6 +204,8 @@ int main (int argc, char * * argv)
}
connected:
close(5);
std::cerr << "# accept\n" << storeUri << "\n";
auto inputs = readStrings<PathSet>(source);