Turn maintenance mode on/off from script.

[MoJo]

I read this topic: https://community.nodebb.org/topic/12275/scripted-maintenance-mode/4

And there are three ways of turning maintainence mode:
1st

use myDatabase
db.objects.update({ _key: "config" }, { $set: { "maintenanceMode": 1 } });

Then restart nodebb.

2nd

// start-maintenance.js
db.objects.update({ _key: "config" }, { $set: { "maintenanceMode": 1 } })
db.objects.update({ _key: "config" }, { $set: { "maintenanceModeMessage": "Backup in progress! We are back online in a few minutes!" } }) 

mongo -u user -p pass mongo-hostname/nodebb-db-name start-maintenance.js

1st and 2nd way didn't set maintenance mode on for me.

3rd is to use api, but i don't know how to use it, could someone point me direction (using bash/python).

I just realized that maintenance mode returns 503 page, so:

4th way would be returning 503 page from nginx directly, this is the easiest one. But it requires to write some custom error page.

[MoJo]

I created read only user in mongodb, replaced user with read only user in config.json. Then added in nginx location block:

sub_filter </head> '</head><h2 style="text-align:center">Forum in readonly mode.</h2>';

So now users can browse forum but can't change it (database). And users can read maintenance warning.

But still i want to know how to set maintenance by api 3rd step, so if soemone have time and knowledge please post it here.

[MoJo]

Nope just checked, user need to have write permissions to the database otherwise nodebb throws "Internal Error".

[baris]

Your first option should work setting maintenanceMode to 1 and restarting nodebb should show the maintenance page to regular users.

[MoJo]

@baris i will try again later, but when i was testing before nothing happened.

[MoJo]

I also tried db.fsyncLock() / db.fsyncUnlock() on mongo db, to force db to read-only, nodebb show no error but was waiting (loading page).

[MoJo]

Weird,

> use nodebb
switched to db nodebb
> db.objects.update({ _key: "config" }, { $set: { "maintenanceMode": 1 } });
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })

NodeBB restart.

It's working, checked APC and the switch is turned on.

I think i was loged in as administrator before, but i was checking maintenance page in APC and switch was turned off.