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Fix a possible database ref fatal during MySQL setup checks if a host is unreachable

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Summary:
Ref T12966. See that task for a description and reproduction steps.

If you put Phabricator in a master/replica configuration and then restart it, we may fatal here if the master is unreachable. Instead, we should survive setup checks.

Test Plan: Put Phabricator in a master/replica configuration, explicitly disabled the master by misconfiguring the port, restarted Phabricator. Before: fatal; after: login screen in read-only mode.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T12966

Differential Revision: https://secure.phabricator.com/D18442
This commit is contained in:
epriestley 2017-08-17 11:24:23 -07:00
parent c9986fd5de
commit 68008dce60
1 changed files with 7 additions and 1 deletions
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8
src/applications/config/check/PhabricatorMySQLSetupCheck.php
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@ -9,7 +9,13 @@ final class PhabricatorMySQLSetupCheck extends PhabricatorSetupCheck {
protected function executeChecks() {
$refs = PhabricatorDatabaseRef::getActiveDatabaseRefs();
foreach ($refs as $ref) {
$this->executeRefChecks($ref);
try {
$this->executeRefChecks($ref);
} catch (AphrontConnectionQueryException $ex) {
// If we're unable to connect to a host, just skip the checks for it.
// This can happen if we're restarting during a cluster incident. See
// T12966 for discussion.
}
}
}