Summary:
Ref T10759. Currently, these checks run only against configured masters. Instead, check every host.
These checks also sort of cheat through restart during a recovery, when some hosts will be unreachable: they test for "disaster" by seeing if no masters are reachable, and just skip all the checks in that case.
This is bad for at least two reasons:
- After recent changes, it is possible that //some// masters are dead but it's still OK to start. For example, "slowvote" may have no master, but everything else is reachable. We can safely run without slowvote.
- It's possible to start during a disaster and miss important setup checks completely, since we skip them, get a clean bill of health, and never re-test them.
Instead:
- Test each host individually.
- Fundamental problems (lack of InnoDB, bad schema) are fatal on any host.
- If we can't connect, raise it as a //warning// to make sure we check it later. If you start during a disaster, we still want to make sure that schemata are up to date if you later recover a host.
In particular, I'm going to add these checks soon:
- Fatal if a "master" is replicating.
- Fatal if a "replica" is not replicating.
- Fatal if a database partition config differs from web partition config.
- When we let a database off with a warning because it's down, and later upgrade it to a fatal because we discover it is broken after it comes up again, fatal everything. Currently, we keep running if we "discover" the presence of new fatals after surviving setup checks for the first time.
Test Plan:
- Configured with multiple masters, intentionally broke one (simulating a disaster where one master is lost), saw Phabricator still startup.
- Tested individual setup checks by intentionally breaking them.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10759
Differential Revision: https://secure.phabricator.com/D16902
Summary:
Ref T11589. Previously, when we failed to load database configuration we just continued anyway, in order to get to setup checks so we could raise a better error.
There was a small chance that this could lead to pages running in a broken state, where ONLY that connection failed and everything else worked. This was accidentally fixed by narrowing the exceptions we continue on in D16489.
However, this "fix" meant that users no longer got helpful setup instructions. Instead:
- Keep throwing these exceptions: it's bad to continue if we've failed to connect to the database.
- However, catch them and turn them into setup errors.
- Share all the setup code so these errors and setup check errors work the same way.
Test Plan:
- Intentionally broke `mysql.host` and `mysql.pass`.
- Loaded pages.
- Got good setup errors.
- Hit normal setup errors too.
- Put everything back.
- Swapped into cluster mode.
- Intentionally broke cluster mode, saw failover to readonly.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11589
Differential Revision: https://secure.phabricator.com/D16501
Summary: All classes should extend from some other class. See D13275 for some explanation.
Test Plan: `arc unit`
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D13283
Summary: Groups setup issues into Important, PHP, MySQL, and Base for easier parsing on initial installations.
Test Plan:
Test my internal server and various issues.
{F289699}
Reviewers: btrahan, epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T7207
Differential Revision: https://secure.phabricator.com/D11726
Summary:
Hit this locally, with an error like:
> Version <empty string> is older than 1.9, the minimum supported version.
(Where `<empty string>` was just the empty string, not literally the text `<empty string>`.)
Be more careful about parsing versions, and parse the newer string.
Test Plan: Got "unknown version" with intentionally-broken test data, then clean readout.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Differential Revision: https://secure.phabricator.com/D11558
Summary: Fixes T6011. See that task for discussion. We can detect when `memory_limit` will be the limiting factor for drag-and-drop uploads and warn administrators about it.
Test Plan: Fiddled configuration values and hit, then resolved, the issue.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T6011
Differential Revision: https://secure.phabricator.com/D10413
Summary: Fixes T2605. Provide some instructions on configuring RDS properly. The "DB Parameter Group" thing in the web UI seems pretty easy to use, it's just not obvious that it's what you should be using.
Test Plan: Jiggled these warnings to trigger them, viewed the output, saw a table of values and a hint about RDS.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T2605
Differential Revision: https://secure.phabricator.com/D10343
Summary: T2381
Test Plan:
Include existing setup issues in the ignore config option,
reduces the number of setup issues in the status bar, moves ignored
issues to the bottom of the list, and marks them as ignored.
Also include a string corresponding to no setup issue, and verify that
application does not break.
Reviewers: epriestley
Reviewed By: epriestley
CC: aran, Korvin
Differential Revision: https://secure.phabricator.com/D5072
Summary:
This is basicaly a light version of D4286. The major problem with D4286 is that it's a huge leap and completely replaces the setup process in one step.
Instead, I want to do this:
- Add the post-setup warnings (yellow bar with "6 unresolved warnings...").
- Copy all setup checks into post-setup warnings (so every check has an old-style check and a new-style check).
- Run that for a little bit and make sure it's stable.
- Implement fatal post-setup checks (the red screen, vs the yellow bar).
- Run that for a little bit.
- Nuke setup mode and delete all the old checks.
This should give us a bunch of very gradual steps toward the brave new world of simpler setup.
Test Plan:
- Faked APC setup failures, saw warnings raise.
- Verified that this runs after restart (get + set).
- Verified that this costs us only one cache hit after first-run (get only).
Reviewers: btrahan, codeblock, vrana, chad
Reviewed By: codeblock
CC: aran
Maniphest Tasks: T2228
Differential Revision: https://secure.phabricator.com/D4295
