[Akonadi] [Bug 411093] New: Unable to start Akonadi: Could not open required defaults file

[Daniel Kraus]

https://bugs.kde.org/show_bug.cgi?id=411093

            Bug ID: 411093
           Summary: Unable to start Akonadi: Could not open required
                    defaults file
           Product: Akonadi
           Version: 5.12.0
          Platform: Neon Packages
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: server
          Assignee: kdepim-bugs at kde.org
          Reporter: bovender at bovender.de
  Target Milestone: ---

SUMMARY


STEPS TO REPRODUCE
1. Upgrade KDE neon 5.16 with KDE Applications 19.08
2. Attempt to start Akonadi

OBSERVED RESULT

Akonadi will not start.

```
$ akonadictl start
Connecting to deprecated signal
QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
org.kde.pim.akonadiserver: Starting up the Akonadi Server...
org.kde.pim.akonadiserver: database server stopped unexpectedly
org.kde.pim.akonadiserver: Database process exited unexpectedly during initial
connection!
org.kde.pim.akonadiserver: executable: "/usr/sbin/mysqld-akonadi"
org.kde.pim.akonadiserver: arguments:
("--defaults-file=/home/USER/.local/share/akonadi/mysql.conf",
"--datadir=/home/daniel/.local/share/akonadi/db_data/",
"--socket=/run/user/1000/akonadi/mysql.socket",
"--pid-file=/run/user/1000/akonadi/mysql.pid")
org.kde.pim.akonadiserver: stdout: ""
org.kde.pim.akonadiserver: stderr: "mysqld-akonadi: [ERROR] Could not open
required defaults file:
/home/USER/.local/share/akonadi/mysql.conf\nmysqld-akonadi: [ERROR] Fatal error
in defaults handling. Program aborted!\n"
org.kde.pim.akonadiserver: exit code: 1
org.kde.pim.akonadiserver: process error: "Unknown error"
mysqladmin: connect to server at 'localhost' failed
error: 'Can't connect to local MySQL server through socket
'/run/user/1000/akonadi/mysql.socket' (2)'
Check that mysqld is running and that the socket:
'/run/user/1000/akonadi/mysql.socket' exists!
org.kde.pim.akonadiserver: Failed to remove runtime connection config file
org.kde.pim.akonadiserver: Shutting down AkonadiServer...
org.kde.pim.akonadicontrol: Application '/usr/bin/akonadiserver' exited
normally...
```

What I already attempted to do: Uninstall/reinstall Akonadi; move
/home/USER/.local/share/akonadi out of the way; change AppArmor settings (see
forum thread linked below).


EXPECTED RESULT

Akonadi should just start (as it did for years prior to upgrading to KDE
Applications 19.08).

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE neon 5.16 User Edition
(available in About System)
KDE Plasma Version: 5.16.4
KDE Frameworks Version: 5.61.0
Qt Version: 5.12.3

ADDITIONAL INFORMATION

See related forum thread: https://forum.kde.org/viewtopic.php?f=215&t=162053

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