mysql will not start

Hello,

I can’t get mysql to run. I think it might be due to to a failed upgrade process. Here are the logs etc…
systemctl status mysql.service

mysql.service - LSB: Start the MySQL database server
          Loaded: loaded (/etc/init.d/mysql)
          Active: failed (Result: exit-code) since Mon, 2013-06-10 14:39:16 BST; 14min ago
         Process: 10002 ExecStart=/etc/init.d/mysql start (code=exited, status=1/FAILURE)
          CGroup: name=systemd:/system/mysql.service

Jun 10 14:39:14 tippingpoint mysql[10002]: mysql.time_zone_leap_second                        OK
Jun 10 14:39:14 tippingpoint mysql[10002]: mysql.time_zone_name                               OK
Jun 10 14:39:14 tippingpoint mysql[10002]: mysql.time_zone_transition                         OK
Jun 10 14:39:14 tippingpoint mysql[10002]: mysql.time_zone_transition_type                    OK
Jun 10 14:39:14 tippingpoint mysql[10002]: mysql.user                                         OK
Jun 10 14:39:14 tippingpoint mysql[10002]: Running 'mysql_fix_privilege_tables'...
Jun 10 14:39:14 tippingpoint mysql[10002]: Running 'mysqlcheck' with connection arguments: '--socket=/var/tmp/mysql....sock'
Jun 10 14:39:14 tippingpoint mysql[10002]: ..failed
Jun 10 14:39:16 tippingpoint systemd[1]: Failed to start LSB: Start the MySQL database server.
Jun 10 14:39:16 tippingpoint systemd[1]: Unit mysql.service entered failed state

/var/log/mysql/mysqld-upgrade.log

Mon Jun 10 14:39:04 BST 2013 - upgrading MySQL...

Will update MySQL now, if you encounter any problems, please read following file:
 /usr/share/doc/packages/mysql-community-server_57/README.SuSE
Running protected MySQL... 
Upgrading MySQL... 
   Looking for 'mysql' as: /usr/bin/mysql
   Looking for 'mysqlcheck' as: /usr/bin/mysqlcheck
   Running 'mysqlcheck' with connection arguments: '--socket=/var/tmp/mysql-protected.7gFrxo/mysql.sock' 
   Running 'mysqlcheck' with connection arguments: '--socket=/var/tmp/mysql-protected.7gFrxo/mysql.sock' 
   mysql.columns_priv                                 OK
   mysql.db                                           OK
   mysql.event                                        OK
   mysql.func                                         OK
   mysql.general_log                                  OK
   mysql.help_category                                OK
   mysql.help_keyword                                 OK
   mysql.help_relation                                OK
   mysql.help_topic                                   OK
   mysql.innodb_index_stats                           OK
   mysql.innodb_table_stats                           OK
   mysql.ndb_binlog_index                             OK
   mysql.plugin                                       OK
   mysql.proc                                         OK
   mysql.procs_priv                                   OK
   mysql.proxies_priv                                 OK
   mysql.servers                                      OK
   mysql.slave_master_info                            OK
   mysql.slave_relay_log_info                         OK
   mysql.slave_worker_info                            OK
   mysql.slow_log                                     OK
   mysql.tables_priv                                  OK
   mysql.time_zone                                    OK
   mysql.time_zone_leap_second                        OK
   mysql.time_zone_name                               OK
   mysql.time_zone_transition                         OK
   mysql.time_zone_transition_type                    OK
   mysql.user                                         OK
   Running 'mysql_fix_privilege_tables'...
   Running 'mysqlcheck' with connection arguments: '--socket=/var/tmp/mysql-protected.7gFrxo/mysql.sock'

/var/log/mysql/mysqld-upgrade-run.log

130610 14:39:05 mysqld_safe Starting mysqld daemon with databases from /home/mysql
2013-06-10 14:39:05 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2013-06-10 14:39:05 10366 [Note] Plugin 'FEDERATED' is disabled.
2013-06-10 14:39:05 10366 [Note] InnoDB: The InnoDB memory heap is disabled
2013-06-10 14:39:05 10366 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2013-06-10 14:39:05 10366 [Note] InnoDB: Compressed tables use zlib 1.2.7
2013-06-10 14:39:05 10366 [Note] InnoDB: Using Linux native AIO
2013-06-10 14:39:05 10366 [Note] InnoDB: Using CPU crc32 instructions
2013-06-10 14:39:05 10366 [Note] InnoDB: Initializing buffer pool, total size = 1.6G, instances = 8
2013-06-10 14:39:05 10366 [Note] InnoDB: Completed initialization of buffer pool
2013-06-10 14:39:05 10366 [Note] InnoDB: Highest supported file format is Barracuda.
2013-06-10 14:39:05 10366 [Note] InnoDB: Creating shared tablespace for temporary tables
2013-06-10 14:39:05 10366 [Note] InnoDB: Setting file "./ibtmp1" size to 12 MB
2013-06-10 14:39:05 10366 [Note] InnoDB: Database physically writes the file full: wait ...
2013-06-10 14:39:05 10366 [Note] InnoDB: 128 rollback segment(s) are active.
2013-06-10 14:39:05 10366 [Note] InnoDB: Waiting for purge to start
2013-06-10 14:39:05 10366 [Note] InnoDB: 5.7.1 started; log sequence number 487279825
2013-06-10 14:39:05 10366 [Note] RSA private key file not found: /home/mysql//private_key.pem. Some authentication plugins will not work.
2013-06-10 14:39:05 10366 [Note] RSA public key file not found: /home/mysql//public_key.pem. Some authentication plugins will not work.
2013-06-10 14:39:05 10366 [Note] /usr/sbin/mysqld: ready for connections.
Version: '5.7.1-m11'  socket: '/var/tmp/mysql-protected.7gFrxo/mysql.sock'  port: 0  openSUSE package
2013-06-10 14:39:14 10366 [Note] /usr/sbin/mysqld: Normal shutdown

2013-06-10 14:39:14 10366 [Note] Giving 0 client threads a chance to die gracefully
2013-06-10 14:39:14 10366 [Note] Shutting down slave threads
2013-06-10 14:39:14 10366 [Note] Forcefully disconnecting 0 remaining clients
2013-06-10 14:39:14 10366 [Note] Binlog end
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'partition'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'ARCHIVE'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'BLACKHOLE'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_METRICS'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_TEMP_TABLE_INFO'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_CMPMEM'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_CMP'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_LOCKS'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'INNODB_TRX'
2013-06-10 14:39:14 10366 [Note] Shutting down plugin 'InnoDB'
2013-06-10 14:39:14 10366 [Note] InnoDB: FTS optimize thread exiting.
2013-06-10 14:39:14 10366 [Note] InnoDB: Starting shutdown...
2013-06-10 14:39:16 10366 [Note] InnoDB: Shutdown completed; log sequence number 487280829
2013-06-10 14:39:16 10366 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2013-06-10 14:39:16 10366 [Note] Shutting down plugin 'MRG_MYISAM'
2013-06-10 14:39:16 10366 [Note] Shutting down plugin 'MEMORY'
2013-06-10 14:39:16 10366 [Note] Shutting down plugin 'CSV'
2013-06-10 14:39:16 10366 [Note] Shutting down plugin 'MyISAM'
2013-06-10 14:39:16 10366 [Note] Shutting down plugin 'sha256_password'
2013-06-10 14:39:16 10366 [Note] Shutting down plugin 'mysql_old_password'
2013-06-10 14:39:16 10366 [Note] Shutting down plugin 'mysql_native_password'
2013-06-10 14:39:16 10366 [Note] Shutting down plugin 'binlog'
2013-06-10 14:39:16 10366 [Note] /usr/sbin/mysqld: Shutdown complete

130610 14:39:16 mysqld_safe mysqld from pid file /var/tmp/mysql-protected.7gFrxo/mysqld.pid ended

It seems to get to Running ‘mysql_fix_privilege_tables’… and then just stops and shuts down. Very strange I can find anyother errors. I have reinstalled, upgraded and downgraded. Always that same.
I cannot find “mysql_fix_privilege_tables” on the system, its is supposed to be installed?

Best wishes,
Phil

Oh please, please! Allways start telling whichversion of openSUSE you use. And that should also trigger you to tell those things we can know and that might be of interest to those who try to help you.

Sorry its been a long day…

Opensuse 12.3 (kernel: 3.7.10-1.11-desktop #1 SMP PREEMPT Thu May 16 20:27:27 UTC 2013)
I have tried installing the following versions of mysql
5.7.1-3.1x86_64
5.6.12-2.1x86_64
5.5.32-2.1x86_64
All fail with either the same of similar problem.

I have also emptied the mysql dir to see if it would rebuild… same problem.

On 2013-06-10 16:06, prgarnett wrote:
> I can’t get mysql to run. I think it might be due to to a failed
> upgrade process

Please explain that failed upgrade process.


Cheers / Saludos,

Carlos E. R.
(from 12.3 x86_64 “Dartmouth” at Telcontar)

The problem appeared after running an update to the system, which didn’t produce any errors. Now when I try to start it I get output to the upgrade.log and upgrade-run.log (as above). That is all I have to go on. Its very odd.

Ok, so I noticed that I had been installing from the openSUSE BuildService - Database repro (Index of /repositories/server:/database/openSUSE_12.3).

So I reinstalled from the standard repro and now everything works as normal…
I can’t be sure that there is a problem with the openSUSE BuildService - Database repro as it is possible that I missed something during the previous installs. Anyway, it works now.

Next time, please mention from the very begining that you are deviating from the standard openSUSE release and use the software from some other repo. Please make it as easy as possible for your potential helpers to understand your situation.

On 2013-06-10 19:16, prgarnett wrote:
>
> The problem appeared after running an update to the system, which didn’t
> produce any errors.

But you are not saying how you did that. Ok, which of these:

Online upgrade
method
Offline
upgrade method

Chapter 16. Upgrading the System and System Changes


Cheers / Saludos,

Carlos E. R.
(from 12.3 x86_64 “Dartmouth” at Telcontar)

AFAICS the OP did not use zypper or Yast, but ran mysql_upgrade.

He did install mysql with zypper or YaST.

mysql_upgrade only upgrades the databases to the new mysql version, not mysql itself.
It is part of the mysql-community-server package and runs automatically when you install/upgrade the package.

On 2013-06-11 00:36, wolfi323 wrote:
>
> Knurpht;2563921 Wrote:
>> AFAICS the OP did not use zypper or Yast, but ran mysql_upgrade.
> He did install mysql with zypper or YaST.
>
> mysql_upgrade only upgrades the databases to the new mysql version, not
> mysql itself.
> It is part of the mysql-community-server package and runs automatically
> when you install/upgrade the package.

You upgrade the entire system, or just mysql, then you have to run that
to update the databases themselves.

If he did upgrade the entire system and how, or just mysql, is important
to know.


Cheers / Saludos,

Carlos E. R.
(from 12.3 x86_64 “Dartmouth” at Telcontar)

No. The important thing to know is if he installed mysql from openSUSE rpms or from elsewhere.
mysql_upgrade is called automatically by openSUSE’s mysql startup script. (have a look at /usr/sbin/rcmysql if you don’t believe me :wink: )

And the OP already said, that he had installed mysql from the openSUSE BuildService - Database repo, which didn’t work for him.
The packages from the Oss repo do work for him now.

So IMHO the only question that remains here is, if the packages from that repo have a problem. (maybe the upgrade process doesn’t work reliably?)

On 2013-06-11 08:16, wolfi323 wrote:

> So IMHO the only question that remains here is, if the packages from
> that repo have a problem. (maybe the upgrade process doesn’t work
> reliably?)

Which is why I want to know the details of that upgrade process :slight_smile:


Cheers / Saludos,

Carlos E. R.
(from 12.3 x86_64 “Dartmouth” at Telcontar)

The problem was caused during a zypper up process, i.e. it was just part of my normal update routine and I wasn’t specifically trying to upgrade mysql. Another server needs updating that is almost identically configured I will report if that has issues.

What I found strange was that there wasn’t much in the way of errors to go on. The mysql server came up during the upgrade process (as indicated in logs) and then just shutdown before it was completed. Not see that before, maybe I should have upped the debug level to see if that would have hinted as to what was going on.

try “mysql_safe” or “mysqld_safe” this also happened to me and I am in the process of finding out whats happened… I would advise that you check your email client if you use kmail as my kmail doesnt work now either I was just checking the forums to see if anyone had the same issue and it looks like they do…

http://bugs.mysql.com/bug.php?id=68915

in kmail the error is

2013-06-24 18:35:16 25064 [Warning] Buffered warning: Changed limits: max_open_files: 1024 (requested 5000)

2013-06-24 18:35:16 25064 [Warning] Buffered warning: Changed limits: max_connections: 214 (requested 256)

2013-06-24 18:35:16 25064 [Warning] Buffered warning: Changed limits: table_cache: 400 (requested 2000)

2013-06-24 18:35:16 25064 [Note] Plugin ‘FEDERATED’ is disabled.
2013-06-24 18:35:16 7fbea62d0740 InnoDB: Warning: Using innodb_additional_mem_pool_size is DEPRECATED. This option may be removed in future releases, together with the option innodb_use_sys_malloc and with the InnoDB’s internal memory allocator.
2013-06-24 18:35:16 25064 [Note] InnoDB: The InnoDB memory heap is disabled
2013-06-24 18:35:16 25064 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2013-06-24 18:35:16 25064 [Note] InnoDB: Compressed tables use zlib 1.2.7
2013-06-24 18:35:16 25064 [Note] InnoDB: Using Linux native AIO
2013-06-24 18:35:16 25064 [Note] InnoDB: Not using CPU crc32 instructions
2013-06-24 18:35:16 25064 [Note] InnoDB: Initializing buffer pool, size = 80.0M
2013-06-24 18:35:16 25064 [Note] InnoDB: Completed initialization of buffer pool
2013-06-24 18:35:16 25064 [Note] InnoDB: Highest supported file format is Barracuda.
2013-06-24 18:35:16 25064 [Note] InnoDB: 128 rollback segment(s) are active.
2013-06-24 18:35:16 25064 [Note] InnoDB: Waiting for purge to start
2013-06-24 18:35:16 25064 [Note] InnoDB: 5.6.12 started; log sequence number 1733229
2013-06-24 18:35:16 25064 [ERROR] /usr/sbin/mysqld: unknown variable ‘table_cache=200’
2013-06-24 18:35:16 25064 [ERROR] Aborting

2013-06-24 18:35:16 25064 [Note] Binlog end
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘partition’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_SYS_DATAFILES’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_SYS_TABLESPACES’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_SYS_FOREIGN_COLS’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_SYS_FOREIGN’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_SYS_FIELDS’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_SYS_COLUMNS’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_SYS_INDEXES’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_SYS_TABLESTATS’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_SYS_TABLES’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_FT_INDEX_TABLE’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_FT_INDEX_CACHE’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_FT_CONFIG’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_FT_BEING_DELETED’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_FT_DELETED’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_FT_DEFAULT_STOPWORD’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_METRICS’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_BUFFER_POOL_STATS’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_BUFFER_PAGE_LRU’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_BUFFER_PAGE’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_CMP_PER_INDEX_RESET’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_CMP_PER_INDEX’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_CMPMEM_RESET’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_CMPMEM’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_CMP_RESET’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_CMP’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_LOCK_WAITS’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_LOCKS’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘INNODB_TRX’
2013-06-24 18:35:16 25064 [Note] Shutting down plugin ‘InnoDB’
2013-06-24 18:35:16 25064 [Note] InnoDB: FTS optimize thread exiting.
2013-06-24 18:35:16 25064 [Note] InnoDB: Starting shutdown…
2013-06-24 18:35:18 25064 [Note] InnoDB: Shutdown completed; log sequence number 1733239
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘BLACKHOLE’
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘ARCHIVE’
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘PERFORMANCE_SCHEMA’
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘MyISAM’
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘MEMORY’
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘CSV’
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘MRG_MYISAM’
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘sha256_password’
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘mysql_old_password’
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘mysql_native_password’
2013-06-24 18:35:18 25064 [Note] Shutting down plugin ‘binlog’
2013-06-24 18:35:18 25064 [Note] /usr/sbin/mysqld: Shutdown complete

That’s a different problem. The current akonadi version (to be more precise, the included mysql config file) is incompatible with the latest mysql versions. But this is already fixed upstream. See https://bugs.kde.org/show_bug.cgi?id=319016

To get your Akonadi/Kmail running again, edit ~/.local/share/akonadi/mysql.conf and replace “table_cache” with “table_open_cache”.

Hi Wolfi, you are officially a star.
However I use webmin to start and stop services & for some reason mysqld wouldnt start so i checked the error code that was given and did a bit of googles your friend… at which point I found mysqld_safe. this started mysql

at the moment It doesnt bother me it just means I need to ssh into the machine to manually start mysql when the machine is rebooted…

Many thanks for your very quick and reply and sorry prgarnett for jumping on your thread…

Well, akonadi by default starts its own private mysql server, that’s why it has its own config (but you can configure it to use an existing one as well, even on a remote host).
So is akonadi working for you now? Then your problem with the global mysql server must be related to the config…
Or was your akonadi problem on a different machine?

Ssh into the machine (as root) and try to start mysql with “systemctl start mysql.service”. What output do you get?
What’s the output of “systemctl status mysql.service” afterwards?

Oh, and btw. on openSUSE the standard mysql init script DOES start the server with “mysqld_safe”.
So I guess “systemctl start mysql.service” will work for you anyway. That would be a bug/incompatibility in webmin then.
You can automatically run mysqld on boot by executing “systemctl enable mysql.service”.

Today a bug was reported which sounds very similar to the original problem in this thread:
https://bugzilla.novell.com/show_bug.cgi?id=827505

So apparently there IS a problem with the mysql packages in server:database and therefore also in Factory.
(server:database is the devel project for mysql in Factory)

I has same problem. I try to start mysql in non-daemon mode and it works:

sudo -u mysql mysqld

So I told to mysql not to rum upgrade script (which fails)

rm /var/lib/mysql/.run-mysql_upgrade
systemctl start mysql.service

Do it on your own risk!