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[luda_glawa]

Вчера направих грешката да реша, че ми е време да мина от Kubuntu 18.04 на Kubuntu 20.04  Дълго време се дърпах, особено след като видях, че KMail го заменят с Thunderbird и MySQL с MariaDB при чиста инсталация, но накрая се престраших - направих обновяване, както са го описали, че трябва да стане, през графичния инструмент. Преди това си направих архив на MySQL базите, както си пише в учебниците и си бях спокоен. Инсталира се - рестартира се и ... започна едно псуванЙе. Точно това, с което не съм имал никога проблем при ъпгрейд/чиста преинсталация, точно то се счупи - KMail. Естествено не съм му направил архив и в следствие на това писма йок То те са си там - намерих ги в директорията им, но ги няма в мейл клиента, защото Akonadi не тръгва, защото решили, че в 20.04 ще махат MySQL-а и ще го заменят с MariaDB и той гърми със странни и страшни грешки. Интересното е, че MySQL-а си работи и базите данни са си там. Тези, които ми бяха важни. Бъдете добри - дайте едно рамо

1. Лог-а на Kmail

shagree@Systemata-3:~$ kmail
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/shagree/.local/share/akonadi/mysql.conf", "--datadir=/home/shagree/.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] Failed to open required defaults file: /home/shagree/.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...
org.kde.pim.akonadicore: Job error:  "" for collection: QVector()

org.kde.pim.akonadicore: Job error:  "" for collection: QVector()

org.kde.pim.messagelist: Failed to load tags  ""
org.kde.pim.kmail: ""
org.kde.pim.kmail: ""

Terminated
shagree@Systemata-3:~$

2. Съдържанието на /home/shagree/.local/share/akonadi

shagree@Systemata-3:~$ ls -l /home/shagree/.local/share/akonadi
total 36
-rw-rw-r--   1 shagree shagree  102 ное  9 11:16 akonadi_control.error.old
-rw-rw-r--   1 shagree shagree 1366 ное 10 15:28 Akonadi.error
-rw-rw-r--   1 shagree shagree  140 ное 10 15:28 Akonadi.error.old
-rw-rw-r--   1 shagree shagree  342 ное  9 11:18 akonadiserver.error.old
drwxrwxr-x   3 shagree shagree 4096 ное  9 14:04 db_data
drwxrwxr-x   2 shagree shagree 4096 мар  6  2018 db_misc
drwxrwxr-x 102 shagree shagree 4096 мар  6  2018 file_db_data
-rw-rw-r--   1 shagree shagree 3660 ное  9 14:53 mysql.conf
drwxrwxr-x   8 shagree shagree 4096 мар  6  2018 search_db
lrwxrwxrwx   1 shagree shagree   27 ное  9 11:16 socket-Systemata-3 -> /tmp/akonadi-shagree.WFyARs
lrwxrwxrwx   1 shagree shagree   22 ное 10 10:11 socket-Systemata-3-default -> /run/user/1000/akonadi
shagree@Systemata-3:~$

3. Проба за ръчно стартиране на Akonadi

shagree@Systemata-3:~$ akonadictl start
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
shagree@Systemata-3:~$ 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/shagree/.local/share/akonadi/mysql.conf", "--datadir=/home/shagree/.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] Failed to open required defaults file: /home/shagree/.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...

[luda_glawa]

Много трудно, но намерих временно (знае ли човек) решение.

Всичко е описано - тук

Идеята е, че вместо вградения в Akonadi MySQL сървър, трябва да бъде настроен да използва реален такъв. При мен се получи. Старата поща се показа и всичко работи нормално.

Workaround

Since the installation of MySQL server removed akonadi-backend-mysql, we should tell Akonadi to use the MySQL server instead of akonadi-backend-mysql, as said in the KDE TechBase.
Editing Akonadi configuration file

Note. The word USER must be changed to the current system username. If you login into Linux with john, then change USER with john.

Open the file /home/USER/.config/akonadi/akonadiserverrc. We should have something like this:

[%General]
Driver=QMYSQL

[QMYSQL]
Host=
Name=akonadi
Options="UNIX_SOCKET=/run/user/1000/akonadi/mysql.socket"
ServerPath=/usr/sbin/mysqld-akonadi
StartServer=true

Change it in this way:

[Debug]
Tracer=null

[%General]
Driver=QMYSQL

[QMYSQL]
Host=localhost
Name=akonadi
Options="UNIX_SOCKET=/var/run/mysqld/mysqld.sock"
ServerPath=/usr/sbin/mysqld
StartServer=false

Save and exit the editor.
Add your standard system user to MySQL

In the terminal type:

sudo mysql

and then in MySQL prompt (change USER with your username.):

CREATE USER 'USER'@'localhost' IDENTIFIED WITH auth_socket;

Please note that the username USER is the same as the standard user in your system. Akonadi will use USER as username to connect to MySQL via auth_socket.

Do not exit from MySQL prompt because we will do other operations.
Create the "akonadi" database

In MySQL prompt:

CREATE DATABASE akonadi;

Give USER the privileges on database "akonadi"

In MySQL prompt (change USER with your username.):

GRANT ALL PRIVILEGES ON akonadi.* TO 'USER'@'localhost';

Then:

FLUSH PRIVILEGES;

Then exit from MySQL prompt:

exit

Try to start Akonadi

In the Bash prompt:

akonadictl start

Akonadi should start correctly.