Bitbucket v6.6.0 maintenance mode - no response from /mvc/maintenance

[Scott Burgess]

I'm trying to run a DIY backup using the Atlassian scripts provided on Bitbucket v6.6.0.

Once the script puts BitBucket into maintenance mode via CURL, the script just hangs with the message: Waiting for Bitbucket to become ready to be backed up.

If I use curl myself, I get this:

curl -s -v -u <user> -X GET -H "X-Atlassian-Maintenance-Token: <token>" -H "Accept: application/json" -H "Content-type: application/json" "http://localhost:7990/mvc/maintenance"
Enter host password for user '<user>':
* About to connect() to localhost port 7990 (#0)
* Trying ::1...
* Connected to localhost (::1) port 7990 (#0)
* Server auth using Basic with user '<user>'
> GET /mvc/maintenance HTTP/1.1
> Authorization: Basic abcd
> User-Agent: curl/7.29.0
> Host: localhost:7990
> X-Atlassian-Maintenance-Token: <token>
> Accept: application/json
> Content-type: application/json

And then it hangs indefinitely - no response, no timeout. I can't lock/unlock via curl either.

Once I've restarted BitBucket I can do the above no worries:

curl -s -v -u <user> -X GET -H "X-Atlassian-Maintenance-Token: <token>" -H "Accept: application/json" -H "Content-type: application/json" "http://localhost:7990/mvc/maintenance"
Enter host password for user '<user>':
* About to connect() to localhost port 7990 (#0)
* Trying ::1...
* Connected to localhost (::1) port 7990 (#0)
* Server auth using Basic with user '<user>'
> GET /mvc/maintenance HTTP/1.1
> Authorization: Basic abcd
> User-Agent: curl/7.29.0
> Host: localhost:7990
> X-Atlassian-Maintenance-Token: <token>
> Accept: application/json
> Content-type: application/json
>
< HTTP/1.1 200
< X-AREQUESTID:
< X-ASEN:
< x-xss-protection: 1; mode=block
< x-frame-options: SAMEORIGIN
< x-content-type-options: nosniff
< Pragma: no-cache
< Expires: Thu, 01 Jan 1970 00:00:00 GMT
< Cache-Control: no-cache
< Cache-Control: no-store
< Cache-Control: no-cache
< vary: accept-encoding
< Content-Type: application/json;charset=UTF-8
< Transfer-Encoding: chunked
< Date: Wed, 21 Jul 2021 06:19:47 GMT
<
* Connection #0 to host localhost left intact
{"task":null,"db-state":"AVAILABLE","scm-state":"AVAILABLE"}

atlassian logs:

2021-07-21 14:56:52,688 INFO [hz.hazelcast.cached.thread-4] c.a.s.i.m.DefaultMaintenanceService The system has been locked for maintenance. It may be unlocked with token: <token>
2021-07-21 14:56:52,969 INFO [http-nio-7990-exec-11] backup @1FOSNEEx896x1345x0 0:0:0:0:0:0:0:1 "POST /mvc/admin/backups HTTP/1.1" c.a.s.i.m.DefaultMaintenanceService BACKUP started. It may be canceled with token: <token>
2021-07-21 14:56:53,131 WARN [hz.hazelcast.cached.thread-1] c.a.s.i.db.DefaultDatabaseManager The DataSource for the current database does not implement ForcedDrainable. Existing connections will not be closed.

< Nothing else here, I restarted BitBucket ~1h 20m after trying the backup >

2021-07-21 16:15:16,490 INFO [Thread-4] c.a.b.i.boot.log.BuildInfoLogger Bitbucket 6.6.0 has shut down

What am I doing wrong?