I am working with Ubuntu 18.04 and MySQL Server - 8.0.18
Suddenly today MySQL can't start anymore
With the sudo service mysql status command appears:
sudo service mysql status
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Sat 2019-11-02 17:05:23 -05; 1min 44s ago
Docs: man:mysqld(8)
http://dev.mysql.com/doc/refman/en/using-systemd.html
Process: 1659 ExecStart=/usr/sbin/mysqld (code=exited, status=2)
Process: 1620 ExecStartPre=/usr/share/mysql-8.0/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
Main PID: 1659 (code=exited, status=2)
Status: "Server startup in progress"
Nov 02 17:05:22 asus2016-vb01 systemd[1]: mysql.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Nov 02 17:05:22 asus2016-vb01 systemd[1]: mysql.service: Failed with result 'exit-code'.
Nov 02 17:05:22 asus2016-vb01 systemd[1]: Failed to start MySQL Community Server.
Nov 02 17:05:23 asus2016-vb01 systemd[1]: mysql.service: Service hold-off time over, scheduling restart.
Nov 02 17:05:23 asus2016-vb01 systemd[1]: mysql.service: Scheduled restart job, restart counter is at 9.
Nov 02 17:05:23 asus2016-vb01 systemd[1]: Stopped MySQL Community Server.
Nov 02 17:05:23 asus2016-vb01 systemd[1]: mysql.service: Start request repeated too quickly.
Nov 02 17:05:23 asus2016-vb01 systemd[1]: mysql.service: Failed with result 'exit-code'.
Nov 02 17:05:23 asus2016-vb01 systemd[1]: Failed to start MySQL Community Server.
With the sudo service mysql restart command appears:
sudo service mysql restart
Job for mysql.service failed because the control process exited with error code.
See "systemctl status mysql.service" and "journalctl -xe" for details.
Following and executing the two suggested commands:
systemctl status mysql.servicejournalctl -xe
Therefore: sudo systemctl status mysql.service
sudo systemctl status mysql.service
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Sat 2019-11-02 17:08:21 -05; 38s ago
Docs: man:mysqld(8)
http://dev.mysql.com/doc/refman/en/using-systemd.html
Process: 2633 ExecStart=/usr/sbin/mysqld (code=exited, status=2)
Process: 2594 ExecStartPre=/usr/share/mysql-8.0/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
Main PID: 2633 (code=exited, status=2)
Status: "Server startup in progress"
Nov 02 17:08:20 asus2016-vb01 systemd[1]: mysql.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Nov 02 17:08:20 asus2016-vb01 systemd[1]: mysql.service: Failed with result 'exit-code'.
Nov 02 17:08:20 asus2016-vb01 systemd[1]: Failed to start MySQL Community Server.
Nov 02 17:08:21 asus2016-vb01 systemd[1]: mysql.service: Service hold-off time over, scheduling restart.
Nov 02 17:08:21 asus2016-vb01 systemd[1]: mysql.service: Scheduled restart job, restart counter is at 5.
Nov 02 17:08:21 asus2016-vb01 systemd[1]: Stopped MySQL Community Server.
Nov 02 17:08:21 asus2016-vb01 systemd[1]: mysql.service: Start request repeated too quickly.
Nov 02 17:08:21 asus2016-vb01 systemd[1]: mysql.service: Failed with result 'exit-code'.
Nov 02 17:08:21 asus2016-vb01 systemd[1]: Failed to start MySQL Community Server.
And with journalctl -xe
-- Unit mysql.service has begun starting up.
Nov 02 17:08:20 asus2016-vb01 audit[2632]: AVC apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" profile="unconfined" name="/usr/sbin/mysqld" pid=2632 comm="apparmor_p
Nov 02 17:08:20 asus2016-vb01 audit[2633]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/etc/ssl/openssl.cnf" pid=2633 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=122
Nov 02 17:08:20 asus2016-vb01 audit[2633]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/2633/task/2634/mem" pid=2633 comm="mysqld" requested_mask="r" denied_mask="r" fsuid
Nov 02 17:08:20 asus2016-vb01 systemd[1]: mysql.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Nov 02 17:08:20 asus2016-vb01 systemd[1]: mysql.service: Failed with result 'exit-code'.
Nov 02 17:08:20 asus2016-vb01 systemd[1]: Failed to start MySQL Community Server.
-- Subject: Unit mysql.service has failed
-- Defined-By: systemd
-- Support: http://www.ubuntu.com/support
--
-- Unit mysql.service has failed.
--
-- The result is RESULT.
Nov 02 17:08:21 asus2016-vb01 systemd[1]: mysql.service: Service hold-off time over, scheduling restart.
Nov 02 17:08:21 asus2016-vb01 systemd[1]: mysql.service: Scheduled restart job, restart counter is at 5.
-- Subject: Automatic restarting of a unit has been scheduled
I followed the solution about this post:
I used the innodb_force_recovery = 10 (ten), it playing, because with 1 and 2 did not work
Therefore with the sudo systemctl start mysql command is possible start the server.
I can see all the data and users saved in peace.
Now through the sudo systemctl status mysql command I get
sudo systemctl status mysql
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: active (running) since Sat 2019-11-02 17:26:48 -05; 11s ago
Docs: man:mysqld(8)
http://dev.mysql.com/doc/refman/en/using-systemd.html
Process: 2769 ExecStartPre=/usr/share/mysql-8.0/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
Main PID: 2808 (mysqld)
Status: "Server is operational"
Tasks: 19 (limit: 4617)
CGroup: /system.slice/mysql.service
└─2808 /usr/sbin/mysqld
Nov 02 17:26:47 asus2016-vb01 systemd[1]: Starting MySQL Community Server...
Nov 02 17:26:48 asus2016-vb01 systemd[1]: Started MySQL Community Server.
Until this point would has no sense this post, but if I do either Alpha or Beta steps:
Alpha (steps):
sudo systemctl stop mysql
remove innodb_force_recovery = 10
sudo systemctl start mysql
Beta (steps):
restart the PC,
(I can confirm `MySQL` was started),
remove innodb_force_recovery = 10
restart the PC
the same problem happens again.
Therefore now is mandatory keep the innodb_force_recovery = 10, otherwise it returns to the same problem
Warning:
According with:
The correct range is from 1 to 6, I am assuming 10 is "interpreted" how the maximum value (6)
Is there a way to configure something and remove innodb_force_recovery? It to return to the normal or old configuration where all worked fine (without innodb_force_recovery)
Note the final content of /var/log/mysql/error.log is
The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
2019-11-02T23:24:37.346875Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.18) starting as process 1668
2019-11-02T23:24:37.804662Z 1 [ERROR] [MY-012671] [InnoDB] Encryption algorithm support missing: N
2019-11-02T23:24:37.804783Z 1 [ERROR] [MY-013183] [InnoDB] Assertion failure: log0recv.cc:3563:err == DB_SUCCESS thread 139850038036224
InnoDB: We intentionally generate a memory trap.
InnoDB: Submit a detailed bug report to http://bugs.mysql.com.
InnoDB: If you get repeated assertion failures or crashes, even
InnoDB: immediately after the mysqld startup, there may be
InnoDB: corruption in the InnoDB tablespace. Please refer to
InnoDB: http://dev.mysql.com/doc/refman/8.0/en/forcing-innodb-recovery.html
InnoDB: about forcing recovery.
23:24:37 UTC - mysqld got signal 6 ;
Most likely, you have hit a bug, but this error can also be caused by malfunctioning hardware.
Thread pointer: 0x555c74a041c0
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 7f315fd6bce0 thread_stack 0x46000
/usr/sbin/mysqld(my_print_stacktrace(unsigned char const*, unsigned long)+0x3d) [0x555c72ab2edd]
/usr/sbin/mysqld(handle_fatal_signal+0x303) [0x555c71b5bc63]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x12890) [0x7f317319a890]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7) [0x7f31712d3e97]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x141) [0x7f31712d5801]
/usr/sbin/mysqld(ut_dbg_assertion_failed(char const*, char const*, unsigned long)+0x2ec) [0x555c72d6015c]
/usr/sbin/mysqld(+0x2074038) [0x555c72c1d038]
/usr/sbin/mysqld(recv_recovery_from_checkpoint_start(log_t&, unsigned long)+0x660) [0x555c72c26e40]
/usr/sbin/mysqld(srv_start(bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)+0x1741) [0x555c72d0e701]
/usr/sbin/mysqld(+0x1fe3f25) [0x555c72b8cf25]
/usr/sbin/mysqld(dd::bootstrap::DDSE_dict_init(THD*, dict_init_mode_t, unsigned int)+0x9f) [0x555c72868f5f]
/usr/sbin/mysqld(dd::upgrade_57::do_pre_checks_and_initialize_dd(THD*)+0x5b4) [0x555c72a7d8f4]
/usr/sbin/mysqld(+0x1076dc5) [0x555c71c1fdc5]
/usr/sbin/mysqld(+0x24182b9) [0x555c72fc12b9]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x76db) [0x7f317318f6db]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x3f) [0x7f31713b688f]
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (0): is an invalid pointer
Connection ID (thread ID): 1
Status: NOT_KILLED
The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
I am working with VirtualBox - Ubuntu is a guest. It had been working for more of 3 months, now suddenly this situation appeared.
More Info:
One
As requested desertangels
sudo /usr/sbin/mysqld
2019-11-03T00:07:06.466871Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.18) starting as process 2307
2019-11-03T00:07:06.470277Z 0 [ERROR] [MY-010123] [Server] Fatal error: Please read "Security" section of the manual to find out how to run mysqld as root!
2019-11-03T00:07:06.472544Z 0 [ERROR] [MY-010119] [Server] Aborting
2019-11-03T00:07:06.475967Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.18) MySQL Community Server - GPL.
Two
Executing cat /etc/mysql/mysql.conf.d/mysqld.cnf
[mysqld]
port = 3307
bind-address = 0.0.0.0
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
datadir = /var/lib/mysql
log-error = /var/log/mysql/error.log
Three
BTW: just in case, with mysql -u root -p appears:
mysql -u root -p
Enter password:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
Of course, the server is not running
if your problem not fix, you can try check more problem.
maybe your mysql crash , like this :
check log in
or you check
Simple run update command
apt-get update
apt-get upgrade
It auto update permissions necessary for mysql.
It solves my problem
I resolved this by updating the /etc/my.cnf from
to
give access to
/var/log/mysql/*formysql