Version:           unspecified (using Devel) 
OS:                Linux

I'm running KDE trunk.  I just updated yesterday (previously I was running trunk from a couple of weeks ago), and akonadi server has stopped working.

What I've found is that starting akonadi server starts mysqld, which runs just fine, but then akonadi server can't connect to it:


Database error: Cannot open database.
Last driver error: "QMYSQL: Unable to connect"
Last database error: "Can't connect to local MySQL server through socket '/home/alex/.local/share/akonadi/db_misc/mysql.socket' (2)"
Unable to open database "Can't connect to local MySQL server through socket '/home/alex/.local/share/akonadi/db_misc/mysql.socket' (2) QMYSQL: Unable to connect"
"[
0: akonadiserver(_Z11akBacktracev+0x30) [0x490fcc]
1: akonadiserver() [0x491312]
2: /lib/libc.so.6(+0x32610) [0x7fdac6623610]
3: /lib/libc.so.6(gsignal+0x35) [0x7fdac6623595]
4: /lib/libc.so.6(abort+0x186) [0x7fdac6624a16]
5: /usr/lib/libQtCore.so.4(_Z17qt_message_output9QtMsgTypePKc+0x6f) [0x7fdac852c4ff]
6: akonadiserver(_ZN15FileDebugStream9writeDataEPKcx+0x114) [0x492392]
7: /usr/lib/libQtCore.so.4(_ZN9QIODevice5writeEPKcx+0x77) [0x7fdac85b87f7]
8: /usr/lib/libQtCore.so.4(+0xfebe6) [0x7fdac85c0be6]
9: /usr/lib/libQtCore.so.4(_ZN11QTextStreamD1Ev+0x3b) [0x7fdac85c9aab]
10: akonadiserver(_ZN6QDebug6StreamD1Ev+0x29) [0x48bcfb]
11: akonadiserver(_ZN6QDebugD1Ev+0x9b) [0x48bdb7]
12: akonadiserver(_ZN7Akonadi13AkonadiServerC2EP7QObject+0x529) [0x492f99]
13: akonadiserver(_ZN7Akonadi13AkonadiServer8instanceEv+0x30) [0x494456]
14: akonadiserver(main+0x35c) [0x48b821]
15: /lib/libc.so.6(__libc_start_main+0xfd) [0x7fdac660fc4d]
16: akonadiserver() [0x48b3d9]
]
"
ProcessControl: Application 'akonadiserver' returned with exit code 255 (Unknown error)


MySql's socket is in /tmp/akonadi-alex.UqVHzh, not where akonadi server is looking for it.  The problem appears to be commit e4affdfc2922efc10b647939fd4e068c02e256eb, which changes the preferred socket directory.  However, akonadi has previously put the following in the akonadiserverrc:

[QMYSQL]
Name=akonadi
Host=
Options="UNIX_SOCKET=/home/alex/.local/share/akonadi/db_misc/mysql.socket"
ServerPath=/usr/sbin/mysqld
StartServer=true


As a result, it's still looking where the socket used to be.

Clearly, I can change this.  In fact, deleting akonadiserverrc fixes the issue.  However, this seems to be an upgrade path issue.

Also, I suggest doing a `git grep db_misc` in the akonadi source code to see where the old socket folder is referenced from.  There are a couple of shell scripts that look like they might need changing.

Reproducible: Always