¿Cómo reinstalar MySQL?

Se rompió una actualización de software, entre otras cosas, mysql y aún no he podido recuperarla.

Causa sospechada: tenía un disco de arranque casi lleno; la actualización llenó el disco antes de completar y, por lo tanto, dejó todo en un desastre. Le di al sistema más disco y moví / var a su propia partición. Todavía estoy intentando sin éxito revivir mysql.

A continuación se muestra lo que intenté hasta ahora (todo como root). Primero, mysql no se inicia (443). Los intentos de arreglar (444, 445) fallan. Los intentos de eliminar mysql y (?) Apparmor fallan (446, 7, 8). Un intento más enérgico de eliminar mysql parece tener éxito (449) y los errores anteriores ya no se ven (450, 1, 2). Mysql no se puede reconfigurar porque ya no está allí (453) pero al intentar reinstalarlo se devuelven los viejos mensajes de error y volvemos al punto de partida (454).

También revisé esta pregunta (aunque en mi caso no se rompió debido a una actualización a 12.04: ya estaba funcionando en 12.10) Arreglando el paquete myslq-server roto después de la actualización a 12.04 e intenté las sugerencias allí (458, 461, 462) en vano.

¿Que más deberia hacer?

Esto está en 3.5.0-25-generic # 39-Ubuntu SMP Lun 25 de febrero 18:26:58 UTC 2013 x86_64 x86_64 x86_64 GNU / Linux

    443  service mysql start
         start: Job failed to start

    444  dpkg-reconfigure mysql-server-5.5
         /usr/sbin/dpkg-reconfigure: mysql-server-5.5
         is broken or not fully installed

    445  apt-get -f install
         ...
         Setting up mysql-server-5.5 (5.5.29-0ubuntu0.12.10.1) ...
         start: Job failed to start
         invoke-rc.d: initscript mysql, action "start" failed.
         dpkg: error processing mysql-server-5.5 (--configure):
         subprocess installed post-installation script
         returned error exit status 1
         dpkg: dependency problems prevent configuration of
         mysql-server:
         mysql-server depends on mysql-server-5.5; however:
         Package mysql-server-5.5 is not configured yet.
         dpkg: error processing mysql-server (--configure):
         dependency problems - leaving unconfigured
         No apport report written because the error message
         indicates its a followup error from a previous failure.
         Errors were encountered while processing:
           mysql-server-5.5
           mysql-server
         E: Sub-process /usr/bin/dpkg returned an error code (1)

    446  apt-get remove mysql-server
         ...
         Removing mysql-server ...
         Setting up mysql-server-5.5 (5.5.29-0ubuntu0.12.10.1) ...
         start: Job failed to start
         invoke-rc.d: initscript mysql, action "start" failed.
         dpkg: error processing mysql-server-5.5 (--configure):
         subprocess installed post-installation script
         returned error exit status 1
         No apport report written because MaxReports is reached already
         Errors were encountered while processing:
           mysql-server-5.5
         E: Sub-process /usr/bin/dpkg returned an error code (1)


    447  apt-get remove apparmor
         ...
         Package 'apparmor' is not installed, so not removed
         0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
         1 not fully installed or removed.
         After this operation, 0 B of additional disk space will be used. 
         Setting up mysql-server-5.5 (5.5.29-0ubuntu0.12.10.1) ...
         start: Job failed to start
         invoke-rc.d: initscript mysql, action "start" failed.
         dpkg: error processing mysql-server-5.5 (--configure):
         subprocess installed post-installation script
         returned error exit status 1
         Errors were encountered while processing:
           mysql-server-5.5
         E: Sub-process /usr/bin/dpkg returned an error code (1)


    448  apt-get remove mysql-server
         Reading package lists... Done
         Building dependency tree       
         Reading state information... Done
         Package 'mysql-server' is not installed, so not removed
         0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
         1 not fully installed or removed.
         After this operation, 0 B of additional disk space will be used.
         Setting up mysql-server-5.5 (5.5.29-0ubuntu0.12.10.1) ...
         start: Job failed to start
         invoke-rc.d: initscript mysql, action "start" failed.
         dpkg: error processing mysql-server-5.5 (--configure):
         subprocess installed post-installation script
         returned error exit status 1
         Errors were encountered while processing:
           mysql-server-5.5
         E: Sub-process /usr/bin/dpkg returned an error code (1)

    449  dpkg -r mysql-server-5.5
         (Reading database ... 322156 files and directories
         currently installed.)
         Removing mysql-server-5.5 ...
         Processing triggers for man-db ...
         Processing triggers for ureadahead ...

    450  apt-get remove mysql-server
         Reading package lists... Done
         Building dependency tree        
         Reading state information... Done
         Package 'mysql-server' is not installed, so not removed
         0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

    451  apt-get remove apparmor
         Reading package lists... Done
         Building dependency tree       
         Reading state information... Done
         Package 'apparmor' is not installed, so not removed
         0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

    452  apt-get -f install
         Reading package lists... Done
         Building dependency tree       
         Reading state information... Done
         0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

    453  dpkg-reconfigure mysql-server-5.5
         /usr/sbin/dpkg-reconfigure: mysql-server-5.5 is broken
         or not fully installed

    454  apt-get install mysql-server
         Reading package lists... Done
         Building dependency tree       
         Reading state information... Done
         The following extra packages will be installed:
           mysql-server-5.5
         Suggested packages:
           tinyca mailx
         The following NEW packages will be installed:
           mysql-server mysql-server-5.5
         0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
         Need to get 0 B/8,851 kB of archives.
         After this operation, 32.8 MB of additional disk space
         will be used.
         Do you want to continue [Y/n]? 
         Preconfiguring packages ...
         Selecting previously unselected package mysql-server-5.5.
         (Reading database ... 322081 files and directories
         currently installed.)
         Unpacking mysql-server-5.5 (from 
         .../mysql-server-5.5_5.5.29-0ubuntu0.12.10.1_amd64.deb) ...
         Selecting previously unselected package mysql-server.
         Unpacking mysql-server (from 
         .../mysql-server_5.5.29-0ubuntu0.12.10.1_all.deb) ...
         Processing triggers for ureadahead ...
         Processing triggers for man-db ...
         Setting up mysql-server-5.5 (5.5.29-0ubuntu0.12.10.1) ...
         start: Job failed to start
         invoke-rc.d: initscript mysql, action "start" failed.
         dpkg: error processing mysql-server-5.5 (--configure):
         subprocess installed post-installation script
         returned error exit status 1
         dpkg: dependency problems prevent configuration of mysql-server:
           mysql-server depends on mysql-server-5.5; however:
         Package mysql-server-5.5 is not configured yet.
         dpkg: error processing mysql-server (--configure):
         dependency problems - leaving unconfigured
         No apport report written because the error message
         indicates its a followup error from a previous failure.
         Errors were encountered while processing:
           mysql-server-5.5
           mysql-server
         E: Sub-process /usr/bin/dpkg returned an error code (1)


    458  apt-get remove --purge mysql-server
         Reading package lists... Done
         Building dependency tree       
         Reading state information... Done
         The following packages will be REMOVED:
           mysql-server*
         0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
         2 not fully installed or removed.
         After this operation, 116 kB disk space will be freed.
         Do you want to continue [Y/n]? 
         (Reading database ... 322159 files and directories
         currently installed.)
         Removing mysql-server ...
         Setting up mysql-server-5.5 (5.5.29-0ubuntu0.12.10.1) ...
         start: Job failed to start
         invoke-rc.d: initscript mysql, action "start" failed.
         dpkg: error processing mysql-server-5.5 (--configure):
         subprocess installed post-installation script
         returned error exit status 1
         Errors were encountered while processing:
           mysql-server-5.5
         E: Sub-process /usr/bin/dpkg returned an error code (1)

    461  touch /etc/apparmor.d/local/usr.sbin.mysqld
         (no output)

    462  service mysql start
         start: Job failed to start

Primero, elimine MySQL:

sudo apt purge mysql-server mysql-client mysql-common
sudo apt autoremove
sudo mv -iv /var/lib/mysql /var/tmp/mysql-backup
sudo rm -rf /var/lib/mysql*

Luego reinstale:

sudo apt update
sudo apt install mysql-server
sudo mysql_install_db
sudo /usr/bin/mysql_secure_installation

En Ubuntu 16.04, la forma de solucionarlo en mi caso fue ( primero haga una copia de seguridad de las bases de datos, se perderán las bases de datos ):

sudo apt remove --purge mysql-server mysql-client mysql-common
sudo apt autoremove
sudo mv -iv /var/lib/mysql /var/tmp/mysql-backup
sudo rm -rf /var/lib/mysql*
sudo apt install mysql-server

(De alguna manera, mis llamadas anteriores apt purge mysql-serverno parecieron tener éxito. Pensé que eso apt purge fooera equivalente a apt remove --purge foo...)

Estaba recibiendo exactamente los mismos errores e intenté la mayoría de los pasos que hiciste, con los mismos resultados. Lo siguiente finalmente funcionó para mí.

apt-get purge mysql-server mysql-client mysql-common mysql-client-5.5 mysql-server-5.5

Después de eso, mysql se instaló normalmente.

No estoy seguro de cuál fue el caso para mí, pero las otras soluciones no funcionaron, seguía dando un error. Intenté esto apt-get purge mysql-*, entonces autoremovey autoclean. Después de eso la instalación estuvo bien.

** **

Asegúrese de hacer una copia de seguridad de sus bases de datos, el comando anterior también podría eliminarlas

** **

Si solo corres

sudo apt-get update
sudo apt-get install mysql-server

actualizará mysql y esto solucionó el problema que tuve después de actualizar a 16.04 lts.

O simplemente corre

sudo apt-get install lamp-server^

para actualizar todos los paquetes del servidor.

Para la versión MySQL 5.7 eliminé MySQL como se describió anteriormente:

sudo apt purge mysql-server mysql-client mysql-common
sudo apt autoremove
sudo rm -rf /var/lib/mysql*

Y lo instalé con ayuda:

sudo apt-get update
sudo apt-get install mysql-server
mysql_secure_installation

Para probar si todo funciona:

systemctl status mysql.service

fuente

Instale phpMyAdmin desde los repositorios predeterminados de Ubuntu. Entonces corre:

dpkg --configure mysql-server-5.5
apt-get purge mysql-server mysql-client mysql-common mysql-client-5.5 mysql-server-5.5
apt-get autoremove
apt-get autoclean
apt-get update
apt-get install  mysql-server
service mysql restart